"hot water supply" and "heating"

FILE No. A10-1503

AIR TO WATER HEAT PUMP

Service Manual

Model name:

Hydro unit Outdoor unit

HWS-P804XWHM3-E1(TR)

HWS-P804XWHT6-E1(TR)

HWS-P804XWHT9-E1

HWS-P1104XWHM3-E1(TR)



HWS-P804HR-E1(TR)

HWS-P1104HR-E1(TR)

AMP Air Conditioning www.ampair.co.uk | [email protected]

Contents

1 Safety precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Refrigerant (R410A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2-1.Safety during installation and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2-2.Installing refrigerant pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2-2-1.Steel pipe and joint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2-2-2.Processing of piping materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2-3.Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2-3-1.Necessary tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2-4.Recharging of refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2-5.Brazing of pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2-5-1.Materials of brazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2-5-2.Flux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2-5-3.Brazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4 Outside drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4-1.Hydro unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4-2.Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4-3.Hot water cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5 Wiring diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5-1.Hydro unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5-2.Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5-3.Hot water cylinder unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6 Key electric component rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6-1.Hydro unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6-2.Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6-3.Hot water cylinder unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6-4.Water heat exchange control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6-5.Outdoor control board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7 Refrigeration cycle / Water system diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7-1.Water system diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7-2.Refrigeration cycle system diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

AMP Air Conditioning

1 www.ampair.co.uk | [email protected]

8 Operational description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

9 Method of defect diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

9-1.Matters to be confirmed first . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

9-1-1.Check the power supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

9-1-2.Check for any miswiring of the connection cables between the hydro unit and the outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

9-1-3.About the installation of the temperature sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

9-2.Non-defective operation (program operation) … No fault code display appears.. . . . . . . . . . . . . . 75

9-3.Outline of the determination diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

9-3-1.Procedure of defect diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

9-3-2.How to determine from the check code on the remote controller . . . . . . . . . . . . . . . . . . . 76

9-3-3.How to cancel a check code on the remote controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

9-3-4.How to diagnose by error code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

9-4.Diagnosis flow chart for each error code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

9-4-1.Hydro unit failure detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

9-4-2.Outdoor unit failure detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

9-4-3.Temperature sensor, temperature-resistance characteristic table . . . . . . . . . . . . . . . . . 113

9-5.Operation check by PC board switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

9-5-1.Operation check mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

9-6.Brief method for checking the key components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

9-6-1.Hydro unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

9-6-2.Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

10 Hydro unit and outdoor unit settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

11 Replacement of the service PC board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

12 How to exchange main parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

13 For cooling installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

14 Periodic inspection items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

15 Part exploded view, part list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164



1

Safety precautions

The unit and this service guide list very important safety precautions.

Understand the following details (indications and symbols) before reading the body text, and follow the instructions.

[About indication]

Indication Meaning of Indication

DANGER

WARNING

CAUTION

Indicates that a wrong operation may cause a service engineer and the third persons around to get fatal or serious injuries.

Indicates that a wrong operation may cause a service engineer and the third persons around to get fatal or serious injuries, or that unit defective after the operation may cause a user to have a similar serious accident.

Indicates that a wrong operation may cause a service engineer and the third persons around to get injuries or may cause property damage*, or that unit defective after the operation may cause a user to have a similar accident.

* Property damage indicates extended damage to property, furniture, livestock, or pets.

[About symbols]

Symbols Meaning of Symbols

Indicates a forbidden action.

Specific forbidden actions are described in text near the symbol.

Indicates a forcible (must do) action.

Specific forcible actions are described in text near the symbol.

Indicates a caution (including danger and warning).

Specific cautions are described in picture or text inside or near the symbol.

DANGER

<Turn off the power breaker>

Turn off the power breaker before removing the front panel and cabinet.

• Failure to do so may cause a high voltage electric shock, leading to death or injury.

• During an operation, the second side circuit of high pressure transmission(*) are applied with a high voltage of 230 V or higher.

• Touching the circuit even with an electrical insulator, let alone a bare hand or body, causes an electric shock.

∗: For details, see the schematic.

<Discharge between terminals>

When the front panel and cabinet are removed, make short-circuit current to discharge between high pressure capacitor terminals.


• After the power is turned off, the high pressure capacitor is still charged with high voltage.

<Forbidden>

Do not turn on the power breaker after removing the front panel cabinet.


WARNING

<Check earth ground>

Before starting failure diagnosis or repair, check that the earth wire (

∗) is connected to the unit ground terminal.

• An unconnected earth wire could cause an electric shock if electric leakage occurs.

• If the earth ground is not properly connected, ask an electrical worker for rework of the ground connection.

∗: Earth wire of class D grounding

3


WARNING

<No modification>

Do not modify the unit.

• Do not disassemble or modify the parts also.

• A fire, an electric shock, or an injury may occur.

<Use specified parts>

Use the specified parts (

∗) when replacing them.

• Using parts other than specified ones may cause a fire or an electric shock.

∗: For details, see the parts price list.

<Keep children away from unit>

Keep any person (including children) other than service engineers away from a failure diagnosis or repairing place.

• A tool or disassembled parts may cause an injury.

• Advise the customer to keep the third persons (including children) away from the unit.

<Insulation treatment>

After connecting a cut lead with a crimp contact, discharge by facing the closed side upward.

• Connect lead wires with crimping terminals and turn the closed end upwards to avoid exposure to water.

<Watch out for fire>

Observe the following instructions when repairing the refrigerant cycle.

(1) Watch out for surrounding fire. Always put out the fire of stove burner or other devices before starting the repair.

Should the fire fail to be put out, the oil mixed with refrigerant gas could catch fire.

(2) Do no use a welder in a closed room.

A room with no ventilation may cause carbon monoxide poisoning.

(3) Keep away flammable materials.

The materials may catch the fire of a welder.

<Use refrigerant carefully>

Check the refrigerant name to use the tools and members appropriate for the refrigerant.

• A product using the refrigerant R410A has the refrigerant name prominently displayed on its outdoor unit. In addition, the diameter of the service port is changed from that of the conventional R22 to prevent incorrect filling.

Never use refrigerant other than R410A for Air to Water Heat Pump using R410A. Also, never use R410A for Air to

Water Heat Pump using other refrigerant (such as R22).

• A mixture of R410A with different ones excessively raises the pressure in the refrigerant cycle, leading to an injury due to burst.

Do not make additional charge of the refrigerant.

• An additional charge when refrigerant gas leaks changes the refrigerant composition in the refrigerant cycle, causing the characteristics change of the Air to Water Heat Pump or excessive high pressure in the refrigerant cycle with more than the specified amount of refrigerant charged. This may cause burst or an injury. If the refrigerant gas leaks, perform refrigerant recovery or other operation to make the Air to Water Heat Pump contain no refrigerant, and then perform vacuuming. After that, refill the unit with the defined amount of liquid refrigerant.

Never charge refrigerant exceeding the amount specified.

When the refrigerant cycle is refilled with refrigerant, do not enter air or refrigerants other than the specified refrigerant, R410A.

• A mixture of R410A with air or an inappropriate substance causes excessive high pressure inside the refrigerant cycle, leading to an injury due to burst.

Check that there is no refrigerant gas leak after the installation is completed.

• If it catches fire of a fan heater, a space heater, or a stove, poisonous gases may be produced.

<Be careful with wiring>

After a repair is completed, be sure to reassemble the parts and put the wiring back to its original state. In addition, be careful with the internal wiring not to be caught in a cabinet or panel.

• A defective assembly or wiring may cause a disaster at a customer site due to electrical leakage or a fire.

<Check for water leak>

After the repair of a water pathway is completed, check that there is no water leak.

• In using the product, water leak may cause a fire at a customer site due to electrical leakage or an electric shock.

4


WARNING

<Check insulation>

After the work is completed, check with an insulating-resistance tester (500V) that the insulation resistance between the live and dead-metal parts is 2 M

Ω or higher.

• A low insulation resistance may cause a disaster at a customer site due to electrical leakage or an electric shock.

<Ventilate>

Ventilate if refrigerant gas leaks during service work.

• Should refrigerant gas catch fire, poisonous gases may be produced. A closed room full of leaking refrigerant results in the absence of oxygen; it is dangerous. Make sure to ventilate.

<Caution: electric shock>

When checking a circuit while energized if necessary, use rubber gloves not to contact the live part.

• Contact with the live part may cause an electric shock.

• The unit contains high-voltage circuits. Contact with a part in the control board with your bare hand may cause an electric shock. Take enough care to check circuits.


Because the electrical components are energized with high voltage, always turn off the power breaker before starting to work.

• Failure to do so may cause an electric shock.

<Always do>

Should refrigerant gas leak, find where the gas leaks and properly repair it.

• To stop the repair work because the leakage location cannot be identified, perform refrigerant recovery and close the service valve. Failure to do so may cause the refrigerant gas to leak in a room. Although refrigerant gas alone is harmless, if it catches fire of a fan heater, a space heater, or a stove, poisonous gases may be produced.

When installing the unit or re-installing it after relocation, follow the installation guide for proper operation.

• A defective installation may cause a refrigerant cycle defective, a water leak, an electric shock, or a fire.

<Check after repair>

After a repair is completed, check for any abnormality.

• Failure to do so may cause a fire, an electric shock, or an injury.

• Turn off the power breaker to perform check.

After a repair is completed (and the front panel and cabinet are placed), make a test run to check for any abnormality such as smoke or abnormal sound.

• Failure to do so may cause a fire or an electric shock. Place the front panel and cabinet before making a test run.

<Check after re-installation>

Check that the following are properly performed after re-installation.

(1) The earth wire is properly connected.

(2) The installation is stable without any tilt or wobbles.

Failure to check them may cause a fire, an electric shock, or an injury.

CAUTION

<Wear gloves>

Wear gloves (

∗) when performing repair.

• Failure to do so may cause an injury when accidentally contacting the parts.

∗: Thick gloves such as cotton work gloves

<Cooling check>

Perform service work when the unit becomes cool enough after the operation.

• High temperature of compressor piping or other equipment after a cooling or heating operation may cause burn.

<Tighten with torque wrench>

Tighten a flare nut with a torque wrench in the specified method.

• A flare nut tightened too much might crack after a long period, causing refrigerant leak.

5


2

Refrigerant (R410A)

This Air to Water Heat Pump adopts a refrigerant HFC (R410A) to prevent destruction of the ozone layer.

The working pressure of R410A refrigerant is 1.6 times higher than that of the conventional refrigerant R22.The refrigerant oil is also changed for the new refrigeration. Therefore, during installation or service work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter the refrigerant cycle of the new type refrigerant Air to Water Heat Pump. A wrong installation or service operation may cause a serious accident.

Read carefully the following instructions to use the tools or members for R410A for safety work.

2-1. Safety during installation and service

• Use only the refrigerant R410A for Air to Water Heat Pump using R410A.

A mixture of R410A with different ones excessively raises the pressure in a refrigerant cycle, leading to an injury due to burst.

• Check the refrigerant name to use the tools and members appropriate for the refrigerant.

A product using the refrigerant R410A has the refrigerant name prominently displayed on its outdoor unit. In addition, the diameter of the service port is changed from that of the conventional R22 to prevent incorrect filling.

• Ventilate if refrigerant gas leaks during service work.

Should refrigerant gas catch fire, poisonous gases may be produced. A closed room full of leaking refrigerant results in the absence of oxygen; it is dangerous. Make sure to ventilate.

• When the refrigerant cycle is refilled with refrigerant, do not mix air or refrigerants other than the specified refrigerant, R410A.

A mixture of R410A with air or an inappropriate substance causes excessive high pressure inside the refrigerant cycle, leading to an injury due to burst.

• Check that no refrigerant gas leaks after the installation is completed.

Should a refrigerant gas leak in a room and catch fire, poisonous gases may be produced.

• When installing the unit that contains large amount of refrigerant such as Air to Water Heat Pump, take measures to prevent the refrigerant from exceeding the threshold concentration in case it leaks.

Should leaking refrigerant exceed the threshold concentration could cause an accident due to oxygen deficient.

• When installing the unit or re-installing it after relocation, follow the installation guide for proper operation.

A defective installation may cause a refrigerant cycle defective, a water leak, an electric shock, or a fire.

• Do not modify the product. Do not disassemble or modify the parts also.

A fire, an electric shock, or an injury may occur.



2-2. Installing refrigerant pipe

2-2-1. Steel pipe and joint

For refrigerant piping, steel pipe and joints are mainly used. Select those comply with JIS (Japanese Industrial

Standards) for a service work. Also, use such clean piping materials that less impurities attach to the inside of pipe and joints.

Copper pipe

Use copper pipe of the “copper and copper alloy seamless pipe” type with attach oil quantity of 40 mg / 10 m or less.

Do not use pipe that is cracked, distorted, or discoloured (especially inside).The expansion valve or capillary may get clogged with impurities.

Considering that Air to Water Heat Pump using R410A is higher in pressure than those using the conventional R22, be sure to select the material that comply with the standard.

Table 2-1 shows the thickness of copper pipe used for R410A.

Never use commercially available thin-walled copper pipe of 0.8 mm thick or less.

Table 2-1 Wall thickness of copper pipe

Nominal diameter

3/8

5/8

Outer diameter

9.52

15.88

Wall thickness (mm)

R410A

0.80

1.00

Joints

For the joint of copper pipe, flared joint and socket joint are used. Remove impurities from a joint before using it.

• Flared joint

A flared joint cannot be used for the copper pipe whose outer diameter is 20 mm or larger. A socket joint can be used instead in that case.

Table 2-2-3 and 2-2-4 show the dimensions of flare pipe, the end of flared joint, and flare nuts.

• Socket joint

A socket joint is used to connect the thick-walled pipe of mainly 20 mm or larger in diameter.

Table 2-2 shows the wall thickness of socket joints.

Table 2-2

The minimum wall thickness of socket joints


3/8

5/8

Reference of outer diameter of copper pipe connected (mm)

9.52

15.9

Minimum joint wall thickness

(mm)

0.80

1.00



2-2-2. Processing of piping materials

When installing refrigerant pipe, prevent water or dust from entering the pipe, and do not use oil other than lubricant used for Air to Water Heat Pump. Make sure that no refrigerant leak occurs.

If piping needs lubrication, use lubricating oil whose water content is removed.

After the oil is put in, be sure to seal the container with air proof cover or other covers.

Flare and precautions

1) Cut a pipe.

Cut slowly with a pipe cutter so that the pipe is not distorted.

2) Remove burr and flaw.

A burr or flaw in a flare part may cause refrigerant leak. Remove carefully all the burrs, and clean up the cut ends before installation.

3) Insert a flare nut.

4) Flare

Check that the clasps and copper pipe are clean. Flare correctly using the clasp. Use a flare tool for R410A or the conventional one. Flare processing dimension varies depending on the flare tool type. When using the conventional flare tool, use a gauge for size adjustment to secure the A dimension.

Figure 2-2-1

Flare dimension

D

A

Table 2-2-3 Flare processing related dimension for R410A


3/8

5/8

Outer diameter

(mm)

Wall thickness

(mm)

9.52

15.9

0.8

1.0

Flare tool for R410A clutch type

0 to 0.5

0 to 0.5

A (mm)

Conventional flare tool

Clutch type

1.0 to 1.5

1.0 to 1.5

Butterfly-nut type

2.0 to 2.5

2.0 to 2.5

Table 2-2-4 Dimension of flare for R410A and flare nut


3/8

5/8

Outer diameter

(mm)

9.52

15.9

Wall thickness

(mm)

0.8

1.0

A

13.0

19.1

Dimension (mm)

B C

13.2

19.7

9.7

15.9

D

20

24.5

Flare nut width

(mm)

18

26

Figure 2-2-2 Relationship between flare nut and flare surface

45° - 46°

B A C D

43° - 45°



Flare connecting procedure and precautions

1) Make sure that the flare and connecting portions do not have any flaw and dust.

2) Correctly align the flared surface and the connecting axis.

3) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is the same as that for the conventional R22. If the torque is weak, gas leakage may occur. If it is too strong, the flare nut may crack and may be made non-removable. When choosing the tightening toque, comply with values designated by products. Table 2-2-5 shows reference values.

NOTE

When applying oil to the flare surface, be sure to use oil designated by the product. Using any other oil deteriorates the lubricating oil, possibly causing the compressor to burn out.

Table 2-2-5 Tightening torque of flare for R410A (Reference values)


3/8

5/8

Outer diameter (mm)

9.52

15.9

Tightening torque N•m (kgf•m)

33 to 42 (3.3 to 14.2)

66 to 82 (6.8 to 8.2)



2-3. Tools

2-3-1. Necessary tools

In Air to Water Heat Pump using R410A, the service port diameter of packed valve of the outdoor unit is changed to prevent mixing of other refrigerant. To reinforce the pressure resistance, flare dimensions and opposite side dimensions of flare nut (For Ø 12.7 copper pipe) of the refrigerant piping are lengthened.

Because the refrigerating machine oil is changed, mixing of oil may generate sludge, clog capillary, or cause other problems. Accordingly, the tools to be used include:

• tools dedicated for R410A (Those that cannot be used for the conventional refrigerant, R22)

• tools dedicated for R410A, but can be also used for the conventional refrigerant, R22

• tools that can be used for the conventional refrigerant, R22.

The following table shows the tools dedicated for R410A and their interchangeability.

Tools dedicated for R410A (The following tools must be for R410A)

Tools whose specifications are changed for R410A and their interchangeability

No.

5

6

3

4

Tool to be used

R410A Air to Water Hear Pump installation

Usage

Pipe flaring

Flaring by conventional flare tool

Connection of flare nut

Evacuating, refrigerant charge, run check, etc.

For R410A

Existence of new equipment

Yes

Yes

Yes

Yes

Conventional equipment can be used

*(Note 1)

*(Note 1)

No

No

Conventional refrigerant

Air to Water Heat Pump installation

New equipment can be used with conventional refrigerant

Yes 1

2

7

8

9

10

Flare tool

Copper pipe gauge for adjusting projection margin

Torque wrench (For Ø15.9)

Gauge manifold

Charge hose

Vacuum pump adapter

Electrical balance for refrigerant charging

Refrigerant cylinder

Leakage detector

Charging cylinder

Vacuum evacuating

Refrigerant charge

Refrigerant charge

Gas leakage check

Refrigerant charge

Yes

Yes

Yes

Yes

*(Note 2)

No

No

No

No

No

*(Note 1)

No

No

Yes

Yes

No

Yes

No

* (Note 1) Flaring for R410A by using the conventional flare tool requires projection margin adjustment. This adjustment requires copper pipe gauge or other instrument.

* (Note 2) A charging cylinder for R410A is currently under development.

General tools (Conventional tools are available)

In addition to the above dedicated tools, the following equipment also available for R22 is necessary as the general tools.

1. Vacuum pump

Use this by attaching vacuum pump adapter.

2. Torque wrench (For Ø6.35)

3. Pipe cutter

4. Reamer

5. Pipe bender

6. Level vial

9. Hole core drill (Ø65)

10. Hexagon wrench

(Opposite side 4 mm)

7. Screwdriver (+, –) 11. Tape measure

8. Spanner or Monkey wrench 12. Metal saw

Also prepare the following equipment for other work methods or run check.

1. Clamp meter

2. Thermometer

3. Insulation resistance meter

4. Electroscope

10


2-4. Recharging of refrigerant

Recharge, if necessary, the specified amount of new refrigerant according to the following procedure.

Recover the refrigerant, and check that no refrigerant remains in the refrigerant cycle.

Open fully the handle of gauge manifold Lo, turn on the vacuum pump, and then perform vacuum evacuating.

Connect the charge hose to packed valve service port on the outdoor unit's gas side.

When the compound gauge's pointer indicates

-0.1 MPa (-76 cmHg), close fully the handle Lo and turn off the vacuum pump.

Connect the charge hose to the vacuum pump adapter.

Let the equipment stay as it is for one to two minutes and check that the compound gauge pointer does not return.

Open fully both packed valves on the liquid and gas sides.

Place the refrigerant cylinder to the electronic balance, connect the connecting hose to the cylinder and the connecting port of the electronic balance, and then charge liquid refrigerant.

(For refrigerant charging, see the figure below)

NOTE

• Never charge refrigerant exceeding the specified amount.

• If the specified amount of refrigerant cannot be charged, charge it a little at a time while running refrigerant recovery (pump down).

• Do not make additional charging.

An additional charge when refrigerant leaks changes the refrigerant composition in the refrigerant cycle, causing the characteristics change of the Air to Water Heat Pump or excessive high pressure in the refrigerant cycle with more than the specified amount of refrigerant charged. This may cause burst or an injury.

Fig. 2-4-1 Configuration of refrigerant charging

(Hydro unit)

(Outdoor unit)

Open

Refrigerant cylinder (with siphon)

Check valve

Open/close valve for charging

Open Close

Electronic balance for refrigerant charging

11


Open

Service port

www.ampair.co.uk | [email protected]

NOTE

• Make sure that the setting is appropriate so that liquid can be charged.

• A cylinder with siphon enables liquid to be charged without the cylinder turned upside down.

[Cylinder with siphon]

Gauge manifold

Outdoor unit

[Cylinder without siphon]

Gauge manifold

Outdoor unit



Siphon pipe

Electronic balance

Electronic balance

NOTE

• Because R410A is HFC mixed refrigerant, charging with gas changes the charged refrigerant composition, causing the equipment characteristics to change.



2-5. Brazing of pipes

2-5-1. Materials of brazing

Silver brazing metal

Silver brazing metal is an alloy mainly composed of silver and copper.

It uses iron, copper, or copper alloy, and is relatively expensive though it excels in soldering.

Phosphor bronze brazing metal

Phosphor bronze brazing metal is generally used to join copper or copper alloy.

Low temperature brazing metal

Low temperature brazing metal is generally called solder, and is an alloy of tin and lead. Do not use it for refrigerant piping because its adhesive capacity is low.

NOTE

• Phosphor bronze brazing metal tends to react with sulfur, producing a fragile compound water solution.

This may cause gas leakage. Therefore, use other type of brazing metal at a hot spring resort or similar place, and coat the surface with coatings.

• To braze the pipe again while performing service work, use the same type of brazing metal.

2-5-2. Flux

Why flux is necessary

• Removing all the oxide film and any foreign matter on the metal surface assists the flow of brazing metal.

• Flux prevents the metal surface from being oxidized in the course of brazing.

• Reducing the brazing metal's surface tension enables the brazing metal to adhere for better metal processing.

Characteristics of flux

• The activation temperature of flux matches the brazing temperature.

• A wide effective temperature range makes flux hard to carbonize.

• It is easy to remove slag after brazing.

• The corrosive action to the treated metal and brazing metal is minimum.

• The good performance of flux gives no harm to a human body.

Since flux works in a complicated manner as described above, select an appropriate type of flux according to metal treatment type, brazing metal and brazing method, or other conditions.

Type of flux

• Non-corrosive flux

It is generally a compound of borax and boric acid.

It is effective when brazing temperature is higher than 800 °C.

• Active solvent

Most of this type of flux is generally used for silver brazing.

It features the increase of oxide film while moving the capability to the borax-boric acid compound to add compounds such as potassium fluoride, potassium chloride, or sodium fluoride.

Piping materials for brazing and brazing metal / flux

Piping material

Copper - Copper

Copper - Iron

Iron - Iron

Brazing metal to be used

Flux to be used

Phosphor copper

Silver

Silver

Do not use

Paste flux

Vapour flux

NOTE

• Do not enter flux into the refrigerant cycle.

• If chlorine contained in the flux remains within the pipe, the lubricating oil deteriorates. Because of this, use a flux that does not contain chlorine.

• When adding water to the flux, use water that does not contains chlorine. (e.g. distilled water or ion exchange water)

• Remove the flux after brazing.

2-5-3. Brazing

Brazing must be performed by a person qualified and experienced with theoretical knowledge since the operation requires sophisticated techniques.

Perform brazing while flowing dry nitrogen gas (N2) to prevent oxide film from forming during brazing application to the inside of the pipe.

NOTE

• Never use gas other than nitrogen gas.

Brazing method to prevent oxidation

1) Attach a reducing valve and a flow meter to the nitrogen cylinder.

2) Use a copper pipe to direct the piping material, and attach the flow meter to the balance.

3) Apply a mark to the clearance between the piping material and the copper pipe filled with nitrogen to prevent the back flow of the nitrogen gas.

4) If the nitrogen gas flows out, be sure to keep open the piping end.

13


5) Use the reducing valve to adjust the nitrogen gas flow speed to 0.05 m

3

/hour or 0.02 MPa

(0.2 kgf/cm

2

).

6) After the steps above, keep the nitrogen gas flowing until the pipe cools down to a certain extent. (Temperature where the pipe is cool enough to be touched by hands)

7) Remove the flux completely after brazing.

Fig 2-5-1

Prevention of oxidation during brazing

M

Flow meter

Stop valve

Nitrogen gas cylinder

Pipe

From nitrogen cylinder

Nitrogen gas

Robber plug



3

Specifications

Unit name Hydro unit

Outdoor unit

Heating capacity *1 (kW)

Cooling capacity *2 (kW)

Variable range of compressor frequency

Power source

Operation mode

Electric characteristic *1 *2 Hydro unit

Outdoor unit

Current (A)

Power (kW)

Power factor (%)

Current (A)

Power (kW)

Power factor (%)

Running current (A) Total

Operating noise sound power level Hydro unit (dB (A))

Outdoor unit (dB (A))

Coefficient of performance *1 *2

Hydro unit Outer dimension

Outdoor unit

Refrigerant piping

Refrigerant

Water piping

Operating temperature range

Operating humidity range

Wiring connection

Height (mm)

Width (mm)

Depth (mm)

Net weight (kg)

Color

Remote controller

Outer dimension *3

Circulating pump

Height (mm)

Width (mm)

Depth (mm)

Motor output (W)

Flow rate (L/min)

Type

Heat exchanger

Outer dimension Height (mm)

Width (mm)

Depth (mm)

Net weight (kg)

Color

Compressor

Fan motor

Motor output (W)

Type

Model

Standard air capacity (m

3

/min)

Motor output (W)

Connection method

Hydro unit

Outdoor unit

Maximum length (m)

Maximum chargeless length (m)

Maximum height difference (m)

Minimum length (m)

Refrigerant name

Charge amount (kg)

Liquid

Gas

Liquid

Gas

Pipe diameter

Maximum length (m)


Maximum working water pressure (kPa) *4

Hydro unit (°C) *5

Outdoor unit (°C)

Hydro unit (%)

Outdoor unit (%)

Power wiring

Connecting line

*1 Heating performance measurement conditions: outside air temperature 7 °C, water supply temperature 30 °C, outlet temperature 35 °C, refrigerant piping length 7.5 m (no height difference).

*2 Cooling performance measurement conditions: outside air temperature 35 °C, water supply temperature 12 °C, outlet temperature 7 °C, refrigerant piping length 7.5 m (no height difference).

*3 • The remote controller should be shipped with the hydro unit.

• Use two 1.5-meter wires to connect the hydro unit with the remote controller.

*4 Check the water piping for leakage under the maximum operating pressure.

*5 Do not leave the hydro unit at 5 °C or below.

HWS-P804XWHM3-E1, P804XWHT6-E1, P804XWHT9-E1

HWS-P804HR-E1

8.0

6.0

10 - 70 Hz

Single phase 50 Hz 220-230 V

Heating

0.44

0.06

59.3

7.57

1.62

93

8.01

Cooling

0.44

0.06

59.3

7.39

1.58

93

7.83

41

66

4.76

3.66

925

525

355

49

Silky shade (Munsell 1Y8.5/0.5)

120

120

16

125 (MAX)

22.9

17.2

Non-self-suction centrifugal pump

Plate-type heat exchange

1340

900

320

92


2500

Twin rotary type with DC-inverter variable speed control

DA422A3F-26M

103.0

100 × 2

Flare connection

Ø9.52

Ø15.9

Ø9.52

Ø15.9

30

30

±30

5

R410A

2.7

R1 1/4

None (Need the flow rate 13 /min or more)

±7

300

5-32

-25-43

15-85

15-100

3 wires: including earth wire (Outdoor unit)

4 wires: including earth wire

15


Unit name Hydro unit

Outdoor unit

Heating capacity *1 (kW)

Cooling capacity *2 (kW)

Variable range of compressor frequency

Power source

Operation mode

Electric characteristic *1 *2 Hydro unit

Outdoor unit

Current (A)

Power (kW)

Power factor (%)

Current (A)

Power (kW)

Power factor (%)

Running current (A) Total

Operating noise sound power level Hydro unit (dB (A))

Outdoor unit (dB (A))

Coefficient of performance *1 *2

Hydro unit Outer dimension

Outdoor unit

Refrigerant piping

Refrigerant

Water piping

Operating temperature range

Operating humidity range

Wiring connection

Height (mm)

Width (mm)

Depth (mm)

Net weight (kg)

Color

Remote controller

Outer dimension *3

Circulating pump

Height (mm)

Width (mm)

Depth (mm)

Motor output (W)

Flow rate (L/min)

Type

Heat exchanger

Outer dimension Height (mm)

Width (mm)

Depth (mm)

Net weight (kg)

Color

Compressor

Fan motor

Motor output (W)

Type

Model

Standard air capacity (m

3

/min)

Motor output (W)

Connection method

Hydro unit

Outdoor unit

Maximum length (m)

Maximum chargeless length (m)


Minimum length (m)

Refrigerant name

Charge amount (kg)

Liquid

Gas

Liquid

Gas

Pipe diameter

Maximum length (m)


Maximum working water pressure (kPa) *4

Hydro unit (°C) *5

Outdoor unit (°C)

Hydro unit (%)

Outdoor unit (%)

Power wiring

Connecting line

*1 Heating performance measurement conditions: outside air temperature 7 °C, water supply temperature 30 °C, outlet temperature 35 °C, refrigerant piping length 7.5 m (no height difference).

*2 Cooling performance measurement conditions: outside air temperature 35 °C, water supply temperature 12 °C, outlet temperature 7 °C, refrigerant piping length 7.5 m (no height difference).

*3 • The remote controller should be shipped with the hydro unit.

• Use two 1.5-meter wires to connect the hydro unit with the remote controller.

*4 Check the water piping for leakage under the maximum operating pressure.

*5 Do not leave the hydro unit at 5 °C or below.

HWS-P1104XWHM3-E1, P1104XWHT6-E1, P1104XWHT9-E1

HWS-P1104HR-E1

11.2

10.0

10 - 90 Hz

Single phase 50 Hz 220-230 V

Heating

0.66

0.09

59.2

10.33

2.21

93

10.99

Cooling

0.66

0.09

59.2

14.99

3.24

94

15.65

43

66

4.88

3.00

925

525

355

52


120

120

16

190 (MAX)

32.1

28.9

Non-self-suction centrifugal pump

Plate-type heat exchange

1340

900

320

92


2500

Twin rotary type with DC-inverter variable speed control

DA422A3F-26M

103.0

100 × 2

Flare connection

Ø9.52

Ø15.9

Ø9.52

Ø15.9

30

30

±30

5

R410A

2.7

R1 1/4

None (Need the flow rate 18 /min or more)

±7

300

5-32

-25-43

15-85

15-100

3 wires: including earth wire (Outdoor unit)

4 wires: including earth wire



4

Outside drawing

4-1. Hydro unit

HWS-P804XWHM3-E1, P804XWHT6-E1, P804XWHT9-E1


525

371.5

355

2-dia.12x17 long hole

(for dia.8-10 anchor bolt)

B leg part

72.5

40

380

Anchor bolt long hole pitch

72.5


Manometer

Remote controller

A leg part

40

2-dia.12x17 U-shape hole

(for dia.8-10 anchor bolt)

19.5

116

Hot water outlet connecting pipe 1 1/4"

Drain nipple

Water inlet connecting pipe 1 1/4"

144.5

309.5

Gas line dia.15.88

Liquid line dia.9.52

59.5


4-2. Outdoor unit

HWS-P804HR-E1, P1104HR-E1

1340

40

54

48

40

170

34

46

Air discharge

17.5

128

74

118

365 17.5

534

581

121

74

655

534

581

360

85

70

24

95 55

605

613

95

55

94

155

95 55

7 65



4-3. Hot water cylinder

HWS-3001CSHM3-E(-UK)

550


550

Specification for UK only



550




5

Wiring diagram

5-1. Hydro unit

WARNING

Perform the grounding from the earth terminal in the terminal block of the outdoor unit.

CAUTION

Electric shock may happen.

Don't touch the electric parts.

Color identification

BLK : BLACK

BRW : BROWN

GRY : GRAY

PNK : PINK

WHI : WHITE

BLU : BLUE

GRN : GREEN

ORN : ORANGE

RED : RED

YEL : YELLOW

CN10

(WHI)

CR10

YEL

BLU

BRW

WHI

9

7

5

2

1 1

4

3

9

8

7

6

5

CR11

CR12

CR13

WHI

RED

3 3

2

1 1

CN01

(WHI)

F01 (5A)

RY

10

RY

11

RY

12

RY

13

CN02

(WHI)

Relay p.c.board

(MCC-1431)

Remote controller

(HWS-AMS11E)

A B

5 5

4 4

3 3

2 2

1 1

RED

BLU

ORN

GRN

BRW

3

2

5

4

1

4

3

6

5

2

1

Remote controller

(HWS-AMS11E)

A B

TB 07

7

A

7

B

1

1

3

2 3

CN41

(BLU)

CN501

(YEL)

*Option

1 2

1 2

TC TWI

LPS

1 2

2

3 4

3 4

2 3 4

2 3 4

1 2

1 2

CN203

(YEL)

1

1

3

2 3

1 2

1 2

CN204

(BRW)

CN205

(RED)

1

1 2

3

3

1

1

2

2

CN206

(WHI)

CN207

(BLU)

1

2

2 3 4

CN212

(WHI)

1

TWO THO

P.C.board

(MCC-1511)

*Option

TTW

A B

1 2

1 2

CN214

(WHI)

TFI

6

A

6

B

6

C

6

D

TB 06

1

1 2

3

3

CN213

(WHI)

Symbol

WPM

3WV

2WV

MIXV

BH

RY01~RY06

LPS

Backup heater1, 2, 3

CN208

(BLU)

CN209

(GRN)

CN210

(RED)

Parts name

Water pump motor

3-way valve (local)

2-way valve (local)

Mixing valve (local)

Booster heater

Relay01~Relay06

Low pressure sensor

Heater AC230V, 3kW

3

4

1

2

3

4

1

2

GRN

GRN

GRN

GRN

3

4

1

2

3

4

1

2

Relay p.c.board

(MCC-1217)

PJ20

1

2

3

4

1

2

3

4

GRN

GRN

GRN

GRN

1

2

3

4

1

2

3

4

Relay p.c.board

(MCC-1217)

PJ20

3

4

1

2

3

4

1

2

YEL

YEL

YEL

YEL

3

4

1

2

3

4

1

2

Photocoupler input p.c.board

(MCC-1214)

PJ17

K1

K2

K1

K2

TB1

TB1

TB1

Symbol

TC

TWI

TWO

THO

TTW

TFI

TB

2

1

4

3

2

1

4

3

3

2

1

WHI WHI

WPM

5

1

5

2

5

3

5

4

5

5

5

6

5

7

5

8

5

9

TB 05

WPM 2WV BH 3WV

Type 1

(2-wire spring return)

BLU

BRW

2

1

2

1

YEL-GRN

BLU

3

2

1

3

2

1

BRW

4

1

4

2

4

3

4

4

TB 04

MIXV

Type 1

(3-wire SPDT type)

BRW

BLU

YEL-GRN

BLU

F9, F10

AC250V

T3.15A

BLU

BRW

A2

RY

05

A1

3 3

1 1

BRW

RED

3 3

WHI

1 1

6

1

6

5

4

3

2

1

YEL

7 7

WHI

5 5

3

RED

1 1

CN500

(BLU)

CN603

(YEL)

CN601

(RED)

CN602

(WHI)

RY604

CN604

(BLU)

7

7

5

5

3

3

SW01

SW02

ON

1 2 3 4

RY605

SW10 SW 11 SW12 SW13

ON ON ON ON

1 2 3 4

RY606

1

1

CN605

(YEL)

1

1

3

3

1 2 3 4

SW06

ON

1 2

CN606

(BLU)

RY607

1

1

3

3

1 2 3 4

SW07

SW14

1 2 3 4

3

3

CN305

(GRN)

CN100

(WHI)

1 5 3

3

1

1

CN211

(BLK)

CN200

(RED)

CN201

(WHI)

CN202

(YEL)

CN102

(WHI)

CN101

(WHI)

F100

Fuse

T5A

250V~

3

4

1

2

3

4

1

2

YEL

YEL

YEL

YEL

3

4

1

2

3

4

1

2

Photocoupler input p.c.board

(MCC-1214)

PJ17

1 1

2 2

3 3

YEL

GRN

RED

1

2

1 1

2

3 3

BLK

BLK

1

2

3

4

5

6

5

6

3

4

1

2

BRW

BRW

RED

RED

ORN

ORN

1 1

WHI

3 3

WHI

P100 BLK

7

RY

01

8 2 2

1 1

TB1

Thermal protector

(auto) 75 5

Transformer

3

2

1

Parts name

Water heat exchanger temperature sensor

Water heat exchanger inlet temperature sensor

Water heat exchanger outlet temperature sensor

Backup heater outlet temperature sensor

Hot water cylinder temperature sensor

Floor heating inlet temperature sensor

Terminal block

Flow switch

*Option p.c.board

Boiler control O/P

Alerm O/P

Compressor operation

O/P

Defrost O/P

Hot water tank thermostat I/P

Emergency stop I/P

Cooling thermostat I/P

Heating thermostat I/P

1. The one-dot chain line indicates wiring at the local site, and the dashed line indicates accessories sold separately and service wires, respectively.

2. , and indicates the terminal board and the numerals indicate the terminal numbers.

3. indicates P.C. board.

* Be sure to fix the electric parts cover surely with screws.

(Otherwise water enters into the box resulting in malfunction.)

5

7

5

8

5

9

TB 05

4

1

4

2

4

3

4

4

TB 04

*See DIP SW13_1

3WV

Type 2

(3-wire SPST type)

Type 3

(3-wire SPDT type)

MIXV

Type 2

(3-wire SPST type)

2

PNK

ORN

4

5

6

7

RY

06

8

RY

01

6

4

WHI

A2

RY

02

A1

8

RY

03

7

* 1

6

4

WHI

A1

RY

04

A2

* 1 HWS-P804XWHT6-E1 : Installed

HWS-P1104XWHT6-E1 : Installed



HWS-P804XWHM3-E1 : Not installed

HWS-P1104XWHM3-E1 : Not installed

* 1 HWS-P804XWHT6TR : Installed

HWS-P1104XWHT6TR : Installed

HWS-P1104XWHT9TR : Installed

HWS-P804XWHM3TR : Not installed

HWS-P1104XWHM3TR : Not installed

1

1

1

2

1

3

1 2 3

TB 01

Outdoor unit

Power supply

220 - 230V~ 50Hz or

380 - 400V~ 50Hz

1L1 3L2

2T1 4T2

RY05

F1 F2

F1, F2

Fuse

AC250V

T30A

TB 03

3

1 2

L N

*Option

1 2

Power supply

220 - 230V~ 50Hz

Hot water cylinder

1L1 3L2 5L3

RY02

Thermal protector

(Single operation)

95 5

Thermal protector

(Single operation)

95 5

Backup heater 1

Backup heater 2

1 L 1 3 L 2 5L3

Backup heater 3

Thermal protector

(Single operation)95 5

RY04

2T1 4T2 6T3

GRY

2T1 4T2 6T3

F3 F4 F5 F6 F7 F8

F3~8

Fuse

AC250V

T30A

Thermal protector

(Single operation)

95 5

Thermal protector

(Single operation)

95 5

RY02

1 L 1 3 L 2 5 L 3 1L1 3L2 5L3

2T1 4T2 6T3

BLK

2T1 4T2 6T3

RY04

F3 F4 F5 F6

F3~6

Fuse

AC250V

T30A

L1 L2 L3 N TB 02

Power supply

380 - 400V 3N~ 50Hz

HWS-P804XWHT9-E1

HWS-P1104XWHT9-E1

HWS-P1104XWHT9TR

L 1

Power supply

380 - 400V 3N~ 50Hz

Backup heater 1

Backup heater 2

TB 02

HWS-P804XWHT6-E1

HWS-P1104XWHT6-E1

HWS-P804XWHT6TR

HWS-P1104XWHT6TR

Thermal protector

(Single operation)

95 5

1L1 3L2 5L3

RY02

2T1 4T2 6T3

F3 F4

F3,F4

Fuse

AC250V

T30A

Backup heater 1

L N TB 02

Power supply

220 - 230V~ 50Hz

HWS-P804XWHM3-E1

HWS-P1104XWHM3-E1

HWS-P804XWHM3TR

HWS-P1104XWHM3TR




HWS-P804HR-E1, HWS-P1104HR-E1

Reactor

(Gray) (Gray) (White) (White)

CM

Reactor

(Red) (White) (Black)

U V W

CN200 CN201

CN202

P04 P05 P06 P07

TL

TD

TO

TE

TS

FM01

FM02

49C

1

2

3

1

2

3

1

2

3

1

2

3

CN400

(White)

CN300

(White)

P.C. board

MCC-1571

1

2

1

2

1

2

3

4

5

6

1

2

1

2

CN609

(Blue)

CN610

(Yellow)

CN604

(White)

SW804

SW801

CN603

(White)

SW803

1 1

3

2

3

1

2

1

2

1

2

1

2

CN602

(Yellow)

CN601

(White)

1 1

2

3 3

CN600

(White)

CN710

(White)

1 2 3 4 5 6

1 2 3 4 6

SW802

CN704

(Blue)

1 3

SW800

RY704

1

1

4

4

CN701

(White)

CN04

(White)

1

1

3

3

5

5

Fuse, F01

T25 A, 250 V ~

Fuse, F03

T10 A, 250 V ~

7

7

(Black)

P01

1

CN703

(Gray)

3

1

3

1

CN702

(White)

3

1

3

L/F

CN606

1

2

(Red)

3

1

3

4 4

(White)

(Black)

(Red)

P09

P02

Fuse

T3.15 A 250 V ~

1 1

2 2

Fuse

T3.15 A 250 V ~

(Black)

SV

PD

PMV 20SF

Earth screw

Outdoor unit

Hydro unit

Earth screw

1 2 3

1 2 3

Earth screw

(Red)

L N

(White)

Power Supply

220 V - 230 V ~ 50 Hz

Heater

TL

TO

20SF

SV

PD

49C

RY

L/F

Symbol

CM

FM01

FM02

PMV

TD

TS

TE

Compressor

Fan motor

Part name

Pulse motor valve

Pipe temperature sensor(Discharge)

Pipe temperature sensor(Suction)

Heat exchanger sensor 1

Heat exchanger sensor 2

Outside temperature sensor

4-way valve coil

2-way valve coil

Pressure sensor

Compressor case thermostat

Relay

Line Filter

1.

indicates the terminal block. Alphanumeric characters in the cycle indicate the terminal No.

2.The two-dot chain line indicates the wiring procured locally.

3. indicates the P.C. board.

4.For the hydro unit circuit, refer to the wiring diagram of the hydro unit.

21


5-3. Hot water cylinder unit

Green /

Yellow

Blue

Brown

Double pole thermal cut out

Blue

Brown

1 2

TB03 (230 V)

A B

TB06 (TTW)

To hydro unit

TTW sensor

Hot water cylinder heater

Supply 220 - 230 V from hydro unit

Cable size 1.5 mm

2

(minimum)



6

Key electric component rating

6-1. Hydro unit

3

4

1

2

HWS-P804XWHM3-E1, T6-E1, T9-E1

Model name

No.

Component name

M3-E1 T6-E1 T9-E1

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Circulating pump

Backup heater 3 kW

Backup heater 6 kW

Backup heater 9 kW

Water heat exchange temperature sensor

(TC sensor)

Water inlet temperature sensor

(TWI sensor)

Water outlet temperature sensor

(TWO sensor)

Heater outlet water temperature sensor

(THO sensor)

Floor inlet temperature sensor

(TFI sensor)

Low pressure sensor

Bimetal thermostat (auto)

Bimetal thermostat (single operation)

Flow switch

Output board (OP)

Input board (OP)

Remote controller (Main)

Remote controller (Sub)

Water 3-way valve terminal

O

O

O

O

O

O

O

O

O

O

O

OP

OP

O

OP

O

O

O

O

O

O

O

O

O

O

O

O

OP

OP

O

OP

O

O

O

O

O

O

O

O

O

O

O

O

O

OP

OP

O

OP

19

20

21

22

23


Mixing valve terminal

Circulating pump terminal

Booster heater terminal

Fuse

O

O

O

O

O

O

O

O

O

O

O

O

O

O

O

Type name

UPM 2K 25-60 130 AC230 V 0.40 A (MAX)

SA3-23652B

SA3-23652B

AC230 V 3 kW

AC400 V (3N) 6 kW

SA3-23652B

AC400 V (3N) 9 kW

10 k

Ω (25 °C)

–

–

–

–

–

–

–

–

–

–

–

–

TCB-PCIN3E

TCB-PCM03E

HWS-AMS11E

HWS-AMS11E

–

–

–

10 k

Ω (25 °C)

10 k

Ω (25 °C)

10 k

Ω (25 °C)

10 k

Ω (25 °C)

Rating

Operating pressure 0.20 MPa

Operating temperature 75±3 °C DC12 V / 0.2 A

Operating temperature 95±5 °C AC250 V / 16 A

Operating flowing quantity 13 /min

AC230 V 0.5 A, DC24 V 1 A

Contact input

AC230 V 0.1 A

2Wire, 3Wire SPST, SPDT type mountable

AC230 V 0.1 A 2Wire type mountable

AC230 V 0.1 A

3Wire SPST, SPDT type mountable

AC230 V 1.0 A

AC230 V 1.0 A

AC250 V 30 A

O ······· Applied

OP ····· Optional accessory



HWS-P1104XWHM3-E1, T6-E1, T9-E1

Model name

No.

Component name

M3-E1 T6-E1 T9-E1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Circulating pump

Backup heater 3 kW

Backup heater 6 kW

Backup heater 9 kW

Water heat exchange temperature sensor

(TC sensor)

Water inlet temperature sensor

(TWI sensor)

Water outlet temperature sensor

(TWO sensor)

Heater outlet water temperature sensor

(THO sensor)

Floor inlet temperature sensor

(TFI sensor)

Low pressure sensor

Thermal protector (auto)

Thermal protector (single operation)

Flow switch

Output board (OP)

Input board (OP)

Remote controller (Main)

Remote controller (Sub)


O

O

O

O

O

O

O

O

O

O

O

OP

OP

O

OP

O

O

O

O

O

O

O

O

O

O

O

O

OP

OP

O

OP

O

O

O

O

O

O

O

O

O

O

O

O

OP

OP

O

OP

O

Type name Rating

UPM GEO 25-85 130 AC230 V 0.66 A (MAX)

SA3-23652B AC230 V 3 kW

SA3-23652B

SA3-23652B

AC400 V (3N) 6 kW

AC400 V (3N) 9 kW

10 k

Ω (25 °C)

–

–

–

–

–

–

–

–

–

TCB-PCIN3E

TCB-PCM03E

HWS-AMS11E

HWS-AMS11E

–

10 k

Ω (25 °C)

10 k

Ω (25 °C)

10 k

Ω (25 °C)

10 k

Ω (25 °C)

Operating pressure 0.20 MPa

Operating temperature 75±3 °C DC42 V / 0.2 A

Operating temperature 95±5 °C AC250 V 16 A

Operating flowing quantity 18 L/min

AC230 V 0.5 A, DC24 V 1 A

Contact input

19

20

21

22

23


Mixing valve terminal

Circulating pump terminal

Booster heater terminal

Fuse

O

O

O

O

O

O

O

O

O

O

O

O

O

O

O

–

–

–

–

–

AC230 V 0.1 A

2Wire, 3Wire SPST, SPDT type mountable

AC230 V 0.1 A 2Wire type mountable

AC230 V 0.1 A

3Wire SPST, SPDT type mountable

AC230 V 1.0 A

AC230 V 1.0 A

AC250 V 30 A


OP ····· Optional accessory




HWS-P804HR-E1, P1104HR-E1

No.

Component name Type name

1

4

5

6

7

2

3

8

9

10

Compressor

Outdoor fan motor (x2)

Reactor (x2)

4-way valve coil

Pulse motor valve (PMV) coil

Board


PC board

High pressure sensor

2-way valve coil

DA422A3F-26M

ICF-280-A100-1

CH-44

UKV-A038

MCC-1560

US-622KXTMQO-SS

MCC-1571

NSK-BH042D-430

VPV-MOAJ510B0

Rating

Output 100 W

1.4 mH, 25 A

AC220 - 230 V full-wave rectifier input, alive time 10 sec or less

DC12 V

Input 3Ø, AC230 V±23 V, 50/60 Hz

OFF = 125 ± 4 °C, ON = 90 ± 5 °C

Input 1Ø, AC220 - 230 V ± 10%, 50/60 Hz

0 ~ 4.15 MPa

AC220 - 240 V



6-3. Hot water cylinder unit

No.

1

2

3

Component name


Hot water cylinder temperature sensor

(TTW sensor)

Thermal cut-out

Model name

1501

CSH

M3-E

(-UK)

2101

CSH

M3-E

(-UK)

3001

CSH

M3-E

(-UK)

O O O

O O O

O O O

Type name

–

–

–


AC230 V 2.7 kW

10 k

Ω (25 °C)

Rating

Operating temperature

Manual reset 82 °C (+3k/-2k)



6-4. Water heat exchange control board



PWM signal line connector

CN500

TC sensor connector

CN203

Remote controller connector

CN41

TFI sensor connector

CN213

TTW sensor connector

CN214

Low pressure sensor connector

CN207, CN212

THO sensor connector

CN206

TWI sensor connector

CN204

TWO sensor connector

CN205

Relay board connector

CN501

Overheat protection thermostat input connector

CN202

Flow switch connector

CN200

Option board connector

CN208-CN211

Transformer connector

CN102

Built-in pump connector

CN603

Hot water cylinder drive connector

CN601

Transformer input connector

CN101

AC power supply connector

CN100

3WV drive connector

CN602

Mixing valve drive connector

CN604

Backup heater 1 drive connector

CN605

Serial input connector

CN305

Backup heater 2 drive connector

CN606



6-5. Outdoor control board

HWS-P804HR-E1, P1104HR-E1

Fan motor output (Lower)

CN300(White)

Fan motor output (Upper)

CN400(White)

Compressor output terminals

CN202

CN201

CN200

Electrolytic capacitors

Case thermostat connector

CN609(Blue)

Power circuit protection fuse

F100(250 V, 3.15 A, plastic case)

4-way valve connector

CN701(White)

Compressor ON output connector

CN704(Blue)

Heater output connector

CN703(Grey)

2-way valve

CN702(White)

External input connector

CN610(Yellow)

Special operation switches

SW801

SW804

Display change-over switches

SW800

SW803

Temperature sensor connectors

TL CN604(White)

TD CN603(White)

TO CN602(Yellow)

TE CN601(White)

TS CN600(White)

PD sensor

CN606(Red)

Alive, abnormal display LEDs

D800 804(Yellow)

D805(Green)

PMV connector

CN710(White)

Initialization switch

SW802

Hydro-outdoor communication signal LEDs

D503 (Green, Outdoor =>Hydro)

D502 (Amber, Hydro => Outdoor)

Power supply connection lead wires

P01(Red)

P02(White)

P03(Black) 4-way valve protection fuse

F700(250 V, 3.15 A plastic case)

Connecting cable connector

CN04(White)

Connecting cable protection fuse

F03(250 V, 10 A)

Power supply protection fuses

F01

(250 V, 25 A)

Earth lead wire

P09(Black)

28


7

Refrigeration cycle / Water system diagram

7-1. Water system diagram

M

M



Installation example of water circuit

(1) (2)

(3)

(5)

(4)

(6)

The water flowing for a system without buffer tank ((1), (2), (3), (5)) requires18 /min (P804XWH 13 /min) or more.

This water flowing requires 5 or more branches of Floor heating or Radiator etc.

Less than 5 branches may cause a flow deficiency. In this case, please provide a buffer tank and secondary pumps as shown in (4).

Please check how to install the boiler (See page 41)



7-2. Refrigeration cycle system diagram

HWS-P804XWHM3-E1, HWS-P804XWHT6-E1, HWS-P804XWHT9-E1,

HWS-P1104XWHM3-E1, HWS-P1104XWHT6-E1, HWS-P1104XWHT9-E1 /

HWS-P804HR-E1, HWS-P1104HR-E1

Outdoor unit

Heating / Hot water supply

Defrosting / Cooling

High pressure sensor (PD)

2-way valve

TD

Compressor

(DA422A3F-26M)

4-way valve

(STF-H0404)

TS

Outdoor heat exchanger

TL

Accumulator

(2500 cc)

TO

TE

PMV

Low pressure sensor

Plate-type water heat exchanger

TC

Hydro unit

Expansion vessel

Manometer

Water vent valve

TWO

Air vent valve

Backup heater

Safety valve

P

THO

[

Circulating pump

8 kW…UPM 2K 25 - 60 130

11 kW…UPM GEO 25 - 85 130

[

TWI

Flow switch



8

Operational description

This chapter describes the working circuit and control of Air to Water Heat Pump about the following operations.

8-1

8-2

8-3

8-4

Item

8-1. Basic Operation

1) Operation control

2) Hot water supply operation

3) Heating operation

4) Cooling operation

8-2. Operation Mode and Control Method

1) Heat pump operation range of hot water supply, heating and cooling




5) Simultaneous operations of "hot water supply" and "heating"

6) Simultaneous operations of "hot water supply" and "cooling"

7) Boiler control

8) Hot water boost operation

9) Anti bacteria (ANTI BACTERIA) operation

10) Night set back (NIGHT SET BACK) operation

11) FROST PROTECTION operation

12) AUTO operation

13) Night time low-noise operation

8-3. Hydro Unit Control

1) Capacity control (compressor, high-temperature release, low-temperature release)

2) Heater control

3) Circulation pump control

4) Control by the flow switch

5) Mixing Valve control (2-temperature heating control)

6) Room temperature control

7) Room temperature control with the thermostat

8) Hot water cylinder thermostat control

9) Control of force stop and restart

10) Control of limit of heat pump operation

11)Output signal control 1


13) Q-H characteristics of hydro unit

14) Automatic restart control

15) Piping freeze prevention control

16) High return water protect control

8-4. Outdoor unit control

1) PMV (Pulse motor valve) control

2) Discharge temperature release control

3) Current release control

4) Current releases shift control

5) Outdoor fan control

6) Defrosting control

7) Winding heating control

8) Short circuit operation prevention control

9) Over current protection control

10) High pressure release control

11) Compressor case thermostat

12) Bottom plate heater control

13) 2-way valve control

14) Start up from hibernation

Page

33 to 35

36 to 47

48 to 64

65 to 73

32


Item

8-1.

Basic

Operation

1) Operation control

Remote controller

Operation flow and applicable data, etc.

Operation condition selection

Heating: Run/Stop

Hot water supply: Run/Stop

Cooling: Run/Stop

Serial signals transmit and receive

Hydro unit


2WV_W

3WV_W

Hot water supply heater MG

Mixing Valve

Lo pressure sensor


Remote controller settings

<Heating> Temperature setting

<Hot water supply > Temperature setting

<Cooling> Temperature setting

Auto Temp

Anti Bacteria

Frost protection

Hot waterboost

Water heat exchange

Sub board

Water heat exchange control board

AC 220~230 V for Hot water cylinder heater

AC 380~400 V (3N~) for Back up heater

Thermostat (Cooling/Heating)

Forcible stop input

Error Alarm stop output

Defrosting output

Operation output

Boiler "ON/OFF"

Booster Heater

Condensed temperature sensor (TC)

Water inlet temperature sensor (TWI)

Water outlet temperature sensor (TWO)

Water heater outlet temperature sensor (THO)

Hot water cylinder sensor (TTW)

Floor inlet sensor (TFI)

Overheat prevention thermostat

Flow switch


Backup heater 1 power-relay

Backup heater 2 power-relay

Circulation pump 1 (Built-in pump)

Operation description

1. Purpose

The operations of the hydro unit and the outdoor unit are controlled according to user-defined operation condition settings.

2. Details

The operation controls include those shown on the left.

3. Operations

1) An operation condition is selected with the remote controller.

2) Setting the remote controller button to

“ON” transmits a signal to the hydro unit.

3) The hydro unit controller controls the operations shown on the left while also controlling the water 2way valve, water 3-way valve, circulation pump, mixing valve, hot water cylinder heater, and backup heater.

4) The hydro unit controller transmits an operation instruction to the outdoor unit, and uses serial signals to transmit and receive control statuses.

5) The outdoor unit control unit performs the operation controls shown on the left while also controlling the compressor, outdoor fan motor, pulse motor valve, 4-way valve, 2way valve, and bottom plate heater.

Outdoor unit

Serial communication

AC 220 - 230 V for heat pump


Outdoor unit control


Inverter frequency control

Waveform synthesis function

Calculation function (Temperature calculation)

AD conversion function

Rapid heating function

Compressor restart

Delay function

G-Tr overcurrent prevention function

Defrosting operation function

Inverter

Compressor

Outdoor fan motor

PD sensor

TD sensor

TS sensor

TE sensor

TO sensor

PMV

4-way valve

2-way valve

Bottom plate heater

33


Item

8-1.

Basic

Operation



[HOT WATER] button set to "ON"

Hot water temperature: 40 °C to 75 °C

Hydro unit control

Circulation pump "ON/OFF" control

Water 3-way valve control

Hot water cylinder heater control

Operation instruction signal transmit


Number of compressor revolutions control

Number of outdoor fan motor revolutions control

Pulse motor valve control

4-way valve control


ZONE1, 2 button set to "ON"

Heating temperature: 20 °C to 60 °C

Hydro unit control





Mixing Valve control

Backup heater control

Booster heater control





4-way valve control


Hot water supply operation

1. Purpose

Hot water supply

2. Details

This section performs hot water supply operation according to heating conditions specified for the steps on the left.

3. Operations

1) By pressing the

[HOT WATER] button on the remote controller, the hydro unit controller starts to transmit a hot water supply operation signal to the outdoor unit.

2) The hydro unit performs the operation controls shown on the left while also controlling the circulation pump, hot water cylinder heater

“3WV”.

3) The outdoor unit controls the compressor, outdoor fan motor, electric expansion valve, and

4-way valve based on the operation signals transmitted by the hydro unit.

Heating operation

1. Purpose

Heating

2. Details

This section performs heating operation according to heating conditions specified for the steps on the left.

3. Operations

1) By pressing the

[ZONE1, 2] button on the remote controller, the hydro unit controller starts to transmit a heating operation signal to the outdoor unit.

2) The hydro unit performs the operation controls shown on the left while also controlling the circulation pump, backup booster heater

“ON/OFF”, water 2way valve, and water 3way valve.

3) The outdoor unit controls the compressor, outdoor fan motor, electric expansion valve, and

4-way valve based on the operation signals transmitted by the hydro unit.



Item

8-1.

Basic

Operation



ZONE1, 2 button set to "ON"

Cooling temperature: 7 °C to 25 °C

Hydro unit control









4-way valve control


1. Purpose

Cooling

2. Details

This section performs cooling operation according to cooling conditions specified for the steps on the left.

3. Operations

1) By pressing the

[ZONE1, 2] button on the remote controller, the hydro unit controller starts to transmit a cooling operation signal to the outdoor unit.

2) The hydro unit controller performs the operation controls shown on the left while also controlling the circulation pump, water

2-way valve, and water

3-way valve.

3) The outdoor unit controls the compressor, outdoor fan motor, pulse motor valve, and 4-way valve based on the operation signals transmitted by the hydro unit.



Item

8-2.

Operation Mode and Control

Method


1) Heat pump operation range of hot water supply, heating and cooling

The heat pump operation range of hot water supply, heating and cooling is shown on the figures below.

• HWS-P804XWH**-E1

• HWS-P1104XWH**-E1

32

30

28

26

24

22

20

18

16

14

12

10

44

42

40

38

36

34

-2

-4

2

0

-6

-8

-10

-12

-14

-16

8

6

4

-18

-20

-22

-24

-26

-28

-30

Cooling operation range

Heat pump operation range of hot water supply and heating

Freeze determination is executed only once.

Heat pump operation range of hot water supply and heating.

*With the exception of TO 25 °C or higher for heating.

Heater operation

4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60

Water temperature at inlet (TWI)

36


Item

8-2.


Method


The following shows the operation modes and controlled objects.

Operation mode

Controlled object

Heat pump

Backup heater


Cooling only

Heating only

Hot water supply only

O O O

Heating and Hot water both operate

Heat pump select for heating

Heat pump select for hot water supply

Heating side

O

Hot water supply side

×

Heating side

×


O

Cooling and Hot water both operate

Heat pump select for cooling

Heat pump select for hot water supply

Cooling side

O


×

Cooling side

×


O

×

×

O

×

×

O

O

×

×

O

×

×

×

O

×

×

×

O

×

×

×

O

O Possible

×

Not possible


1) Operation start condition

When the [HOT WATER] remote controller button is pressed and the following operation start condition is met, the operation starts.

• TTW < 38 °C is detected.

2) Operation mode determination

An operation mode is determined according to the temperature of TTW sensor.

• Heat pump operation selection *1 *2

• When TTW < 38 °C (a zone in the right figure) is met, the heat pump operation is selected.

• Heater operation selection

When 45 °C

≤ TTW < TSC_H (b zone in the right figure) is met, the heater operation is selected.

• Thermostat status "OFF" selection

When TTW

≥ TSC_H is met, the thermostat status "OFF" is selected.

3) Operation stop

The operation stops in the following cases.

• The remote controller gives a stop instruction.

• TTW

≥ TSC_H is met.

*1: When the outside temperature is -25 °C or below, the heater operation is selected even if the TTW temperature falls into

"a zone".

*2: When "Hot water supply" and "Heating" are simultaneously in operation, the heater operation may be selected depending on the outside air temperature.

TTW sensor

(Hot water cylinder unit)

TTW

TSC_H

(Temperature set with remote controller)

Thermostat OFF c Zone

Heater operation b Zone

HP_H OFF 45 °C

HP_H ON 38 °C

Heat pump operation a Zone

TSC_H is hot water temperature set with remote controller

Related FC

FC No.

1E

1F

20

21

24

25

Setting item

Upper limit of hot water supply temperature

Lower limit of hot water supply temperature

Heat pump start temperature

Heat pump end temperature

Outside air correction start temperature for hot water supply*

3

Outside air correction temperature for hot water supply*

3

Default

75 °C

40 °C

38 °C

45 °C

0 °C

3 degree

Setting available range

60-80 °C

40-60 °C

20-45 °C

40-50 °C

-20-10 °C

0 -15 degree

*3:When the outside temperature is 0 °C or below, the boil-up temperature will be higher that setting temperature in hot water supply mode.



Item

8-2.


Method



<Operation only for ZONE1>

• This operation is enabled when DP_SW12_2 ZONE1 is set to "OFF" (default).

• The remote controller displays settings, and only the set temperature of can be changed.

<Operation for ZONE1 and ZONE2 (2 temperatures control)>

• This operation is enabled when DP_SW12_2 ZONE1 is set to "OFF" (default) and DP_SW12_3 ZONE2 to "ON".

• The remote controller displays settings, and the set temperatures of

can be changed.

• To set temperatures for and , use SELECT to switch between and .

• For 2 zone temperatures control, the flow adjustment of MIXING VALVE controls the water temperature of

. For details, see the description on MIXING VALVE control in 8-3-5. (See page 55)


Pressing the [ZONE1, 2] button of remote controller starts a heating operation. *1 *2

TSC_F

TWI

Thermostat off operation e zone

2) Operation mode selection

An operation mode is determined according to the temperature of TWI sensor.

• Heat pump operation selection *1 *2

When TWI < TSC_F (d zone in the right figure) is met, the heat pump operation is selected.

• Thermostat status "OFF"

When TWI

≥ TSC_F (e zone in the right figure) is met, the thermostat status "OFF" is selected.

diff2K d zone

Heat pump operation

TSC_F is a heating temperature set with remote controller

3) Operation stop condition

When the following condition is met, the heating operation stops.


*1: When the outside temperature is -25 °C or below, the heater operation is selected even if the TWI temperature falls into

"d zone".

*2: When "Hot water supply" and "Heating" are simultaneously in operation, the heater operation may be selected depending on the outside air temperature.

Related FC

FC No.

1A

1B

1C

1D

Setting item

Upper limit of heating (Zone1) limited temperature

Lower limit of heating (Zone1) limited temperature

Upper limit of heating (Zone2) limited temperature

Lower limit of heating (Zone2) limited temperature

Default

60

20

60

20


37-60 °C

20-37 °C

37-60 °C

20-37 °C



Item

8-2.


Method



Pressing the [ZONE1, 2] button and then [OPERATION MODE] starts a cooling operation.


Pressing the [ZONE1, 2] button and then [OPERATION

MODE] starts a cooling operation.

2) Op eration mode selection

An operation mode is determined according to the temperature of TWI sensor.

• Heat pump operation selection *1

When TWI

≥ TSC_F (d zone in the right figure) is met, the heat pump operation is selected.

• Thermostat status "OFF"

When TWI < TSC_F (e zone in the right figure) is met, the thermostat status "OFF" is selected.

TSC_F+2K or 12 °C

(Temperature set with remote controller)

TSC_F

TWI

Heat pump operation

(cooling) d zone

Diff : 2k e zone

Thermostat off operation

TSC is a cooling temperature set with the remote controller

3

) Ope ration stop condition

When either of the following conditions is met, the cooling operation stops.


• The operation is switched to heating.

*1: When the outside temperature is 10 °C or below, cooling does not start even if the TWI temperature falls into "d zone".

Related FC

FC No.

02

18

19

Cooling mode availability

Setting item

Upper limit of cooling setting temperature

Lower limit of cooling setting temperature

Default

0

25

7


0: Permitted

18-30 °C

7-20 °C

5) Simultaneous operations of "hot water supply" and "heating"

At the time of "Hot water supply" and "Heating" simultaneous operation, the operation mode is select as follows depending on the outside air temperature.

• f zone Operation with hot water supply priority

A heat pump operation is performed in the hot water supply side, and a heating operation in the heating side.

The heat pump maintains a supply of hot water for up to

30 minutes during a simultaneous operation.

• g zone Operation with heating priority

A heat pump operation is performed in the heating side, and a cylinder heater operation in the hot water supply side.

0

(FC22)

TO

Hot water supply heat pump priority operation

Heating heat pump priority operation

-25

Heater operation f zone

Diff : 5deg g zone

Diff : 5deg h zone *3

Operation mode by zone

Zone

f g h


Heat pump *2

Heater

Heater *3

Heating side

Stop *2

Heat pump

Heater *3

*2: Note that after a heat pump operation for "Hot water supply" is selected in f zone, when the operation moves to a heater operation for "hot water" and then 5 minutes has passed (Hot water supply operation in b zone), the operation mode changes as follows.

Zone Hot water supply side Heating side

f' Heater Heat pump

When TTW

≥ 45 °C (FC: 21) is met, the operation ends f' zone and returns to f zone.

*3: If the h-zone operation starts while external temperature is higher than -25 °C, the h-zone operation continues for

60 minutes.



Item

8-2.


Method


Related FC

FC No.

22

Setting item

Priority mode switch temperature

Default

0 °C


-20-20 °C

* Note: When user selects “hot water supply” and “ZONE1,2”, and Heat pump selects hot water supply mode, the

Maximum operating time of heat pump is 30 min.

6) Simultaneous operations of "hot water supply" and "cooling"

For simultaneous operations of "hot water supply" and "cooling", basically cooling runs by a heat pump operation, and hot water supply by a heater operation.

Normal


Heater *

Cooling side

Heat pump *

*

By setting FC_01 to “1”, heat pump operation for “hot water supply” is permitted. Under the setting, the heat pump runs for the hot water supply side when TTW is less than 38 °C.

TTW<38 °C


Heat pump

Cooling side

stop

The operation mode returns to normal when TTW become 45 °C or more (FC: variable).

Related FC

FC No.

02

0F

Setting item

Cooling mode availability

Heat pump operation for hot water supply permitted / not permitted

Default Setting available range

1: Not permit 0: Permitted

0: Not permit 1:Permitted (Heat pump may run for hot water supply.)



Item

8-2.


Method


7) Boiler control

The boiler assists the hot water supply operation and heating operation according to the boiler’s position.

7-1) Boiler setting

• TCB-PCIN3E optional PC board is required. Connect its connection cable to CN208 port on the PC board of the hydro unit.

• Setting DPSW on the hydro unit: DP_SW13_2=“ON/OFF” switches “Using boiler / Not using boiler (Default)”.

Set the switch to “ON” when using the boiler.

• The temperature switching the boiler and heat pump: FC_23=-10 °C (Default) See the next item.

The boiler output becomes effective when the outside air temperature is -10 °C or less.

• Boiler position setting: DP_SW02_1=“ON/OFF” must be switched in accordance with the boiler position from the

3-way valve; before the 3-way valve / after the 3-way valve and in the heating side (Default).

When the switch is set to “ON”, the boiler runs in the hot water supply operations or heating operation. The action of the 3-way valve depends on heat pump’s action and the boiler follows their action.

When the switch is set to “OFF”, the boiler runs in heating operation. Also, the boiler runs when the heat pump is running for hot water supply while heating and supplying hot water simultaneously.

• Priority setting between the boiler and hydro unit: FC_3E=“0/1” switches the running priority; hydro unit (Default) / boiler.

When FC_3E is set to “0” (Default), the hydro unit has priority, the boiler stops as temperature reaches the hydro unit’s temperature setting.

When FC_3E is set to “1”, the boiler continues to run even after temperature reaches the hydro unit’s temperature setting. (The setting of FC_3E is effective during the HP+Boiler operation.)

• Coordination setting of the boiler and heat pump: when FC_5B=“0”, the boiler and heat pump runs simultaneously.

When FC_5B=“1”, only the boiler runs, pump ON. (However, if the external air temperature becomes the boiler-HP switching temperature or more within 60 minutes)

When FC_5B=“2”, the heater runs. (the heater may run instead for up to 60 minutes.)

When FC_5B=“3”, only the boiler runs. (Pump OFF:Default)

*1:When FC_3E is set to “0” (Default), the hydro unit has priority, the boiler stops as temperature reaches the hydro unit’s temperature setting.

When FC_3E is set to “1”, the boiler continues to run even after temperature reaches the hydro unit’s temperature setting.

<Installation example>

DP_SW02_1=“OFF”(The boiler is placed after the 3-way valve and in the heating side.)

Option

HEATING

TO<=-10*

Boiler + HP**

Boiler

HOT WATER

HEATING & HOT

WATER

HP

Boiler for heating

HP for hot water or heating

Outdoor unit

Hydro

Buffer

Radiator

COOLING

COOLING & HOT

WATER

* Boiler & HP switching temp setting FC23= -10

** Boiler control / functionality setting FC5B= 0 (HP+Boiler)

*** Hot water & cooling priority setting (FC_0F=“1” hot water priority is necessary.)

DP_SW02_1=“ON”(The boiler is placed before the 3-way valve.)

–

HP for cooling

Heater for hot water***

-10*<TO

HP

HP

HP

HP (TO

≥10)

HP for cooling


Outdoor

Unit

Hydro unit

Boiler

Buffer tank

Radiator

* Boiler & HP switching temp setting FC23= -10

** Boiler control / functionality setting FC5B= 0 (HP+Boiler)

*** Hot water & cooling priority setting (FC_0F=“1” hot water priority is necessary)

HEATING

HOT WATER

HEATING & HOT

WATER

TO<=-10*

Boiler + HP**

Boiler + HP**

Boiler + HP**

COOLING

COOLING & HOT

WATER

–

HP for cooling


-10*<TO

HP

HP

HP

HP (TO

≥10)

HP for cooling


41


Item

8-2.


Method


7-2) Boiler-output control

• I zone: heat pump operation

Normally the heat pump operation is executed in the zone.

• J zone: heat pump operation and boiler operation *1

In the zone, the heat pump + boiler operation (*2) is executed and the heater operation is executed in the hot-watersupply side.

TO

I zone

Diff : 5K

Heat pump operation

-10

E

Heat pump & boiler operation

J zone

*2:Operation mode is not changed with the outside temperature when an external signal to control the limit of heat

pump limit operation (see 8-3-9 (See page 59)) is input.

7-3) Boiler output limit control

The boiler power output is limited depending on the settings of boiler position (DPSW02_1) and FC62.

Boiler position

(DPSW02_1)

OFF

(After 3-way valve, heating side)

ON

(Before 3-way valve)

FC62

(Activate/deactivate A02 error detection)

0

1

0

1

Temperature range in which the boiler signal is output

(Detected temperature of TWI, TWO or THO)

TWI or TWO or THO<58 °C



No limit *1

7-4) A02 error detection while the boiler is running

A02 error detection is deactivated depending on the settings of FC62 and whether the boiler is installed or not

(DPSW13_2).

Boiler is installed or not

(DPSW13_2)

OFF

(Not installed)

ON

(Installed)

FC62

(Activate/deactivate A02 error detection)

0

1

0

1

Temperature recognized as A02 error

(Detected temperature of TWI, TWO or

THO)

TWI or TWO or THO

≥70 °C (Beep)

TWI or TWO or THO

≥70 °C (Beep)

TWI or TWO or THO

≥70 °C (Beep)

No error detection *1 (No beep)

*1 If a user runs the boiler under the condition that no limit has been set, and hot water from the boiler has damaged parts inside of the hydro unit, the user is fully responsible for the damage.

7-5)2 zone temperature control while the boiler is running

2 zone temperature control by boiler with P1 OFF is required DPSW10_3 OFF

Boiler is installed

(DPSW13_2)

ON

(Installed)

ZONE2 operation is using

(DPSW12_3)

ON

(Using)

P2 synchronize with P1

(DPSW10_3)

OFF

(No synchronize,

Always ON)

ON

(Synchronize)

FC5B

Coordination of the boiler and heat pump

0

(Boiler and heat pump)

1

(Boiler only)

2

(Heater only)

3

(Boiler only(P1 OFF))

0

(Boiler and heat pump)

1

(Boiler only)

2

(Heater only)

3

(Boiler only(P1 OFF))

2 zone temperature control

P1 / P2 / Mixing Valve control

ON / ON / ON

OFF / ON / ON

ON / ON / ON

OFF / OFF / OFF



Item

8-2.


Method


Related FC

FC No.

23

3E

Setting item

Boiler-heat pump switching temperature

Control priority between the hydro unit and boiler

(Control valid for operating heat pump mode)

5B

62

Coordination of the boiler and heat pump

Activate/deactivate A02 error detection

-10 °C

Default

0: Hydro unit control

Variable range

-20-20 °C

Independent temperature control for the hydro unit and boiler

3: Boiler only (Pump OFF) 0: Boiler and Heat pump

1: Boiler only

2: Heater only

0: Activate 1: Deactivate

8) Hot water boost operation

A hot water boost operation heats the water quickly to the set temperature TSC_H = 75 °C (FC_09).

1) How to operate

• When pressing the [HOT WATER BOOST] button after pressing the remote controller [HOT WATER] button, a heat pump operation in progress in the heating side switches to in the hot water side, and continues the operation regardless of the hot water supply start condition, TTW < 38 °C. In addition, the hot water cylinder is immediately energized to start a Hot water supply operation under TSC_H = 75 °C.

• A hot water boost operation returns to the usual operation after 60 minutes passed or reached 75 °C.

• The remote controller display during a hot water boost operation is the same as the set temperature display of a usual

Hot water supply operation.

• The usual set temperature change is used for changing the set temperature during a hot water boost operation.

Change the BOOST set temperature with FC_09, if necessary.

HOT WATER button set to "ON"

HOT WATER BOOST button set to "ON"

Current heat pump operation

Hot water supply side

75 °C hot water operation (FC_09)

Heating side

Switches to Hot water supply operation

60 minutes operating time (FC_08)

Usual operation

Related FC

FC No.

09

08

Setting item

HOT WATER BOOST set temperature

HOT WATER BOOST operation time

Default

75 °C

60 min


40-80 °C

30-180 min

Every 10 min



Item

8-2.


Method


9) Anti bacteria (ANTI BACTERIA) operation

An anti bacteria operation regularly performs a Hot water supply operation with the set temperature TSC_H = 75 °C

(can be set with FC_0A).

1) How to operate

• Pressing the [HOT WATER] button and then the remote controller [ANTI BACTERIA] button changes the setting to

TSC_H = 75 °C at the set cycle and time (both can be set with the remote controller FC) to start ANTI BACTERIA operation.

• The first anti bacteria operation starts when press the [ANTI BACTERIA] button and starting time come.

• When the set temperature 75 °C is reached after the ANTI BACTERIA operation started, the set temperature remains another 30 minutes (can be set with FC_0B).

• The priority zone determined by the outside temperature selects an operation, Hot water heat pump or hot water supply heater.

• The hot water heat pump operation, when selected, ignores the hot water supply start condition (TTW < 38 °C) and forcibly performs a hot water operation.

• During ANTI BACTERIA operation (Forcible hot water operation at 75 °C), the hot water set temperature display is not changed. If it is changed from the remote controller, the normal hot water set temperature will be changed.

HOT WATER button set to "ON"

ANTI BACTERIA button set to "ON"

Anti bacteria start time

75 °C hot water supply operation

75 °C hot water supply operation for 30 minutes

Usual hot water supply operation

(Set temperature: 40 °C to 75 °C)

Caution

• During a 75 °C hot water supply operation with ANTI

BACTERIA, the remote controller does not display 75 °C.

• Be careful not to burn yourself; Output water may be hotter than that displayed on the remote controller.

Related FC

FC No.

0A

0B

Remote controller OC

Remote controller OD

Setting item

Anti bacteria set temperature

Anti bacteria holding time

Anti bacteria start time

Anti bacteria operation cycle

Default

75 °C

30 min

22:00

7 days


65-80 °C

0 - 60 min

0:00-22:00

Every day to 10 days



Item

8-2.


Method


10) Night set back (NIGHT SET BACK) operation

A night set back operation performs heating at 5K lower and cooling at 5K higher temperatures against the remote controller set temperature from the setting start time (22:00) to the end time (6:00) every day.

Note) • Set the remote controller time before starting a NIGHT SET BACK operation.

• The set time can be changed with remote controller FC. (See 10-8 (See page 129))

Related FC

FC No.

Remote controller

OE

Setting item

Night set back start Time setting

Remote controller

OF

26

Night set back end Time setting

Night set back setting Temperature width

58 Night set back setting activate

Default

22:00

6:00

5 degree

0. Zone 1 & 2


0:00-23:00

0:00-23:00

3 -20 degree

1. Zone 1 only

11) FROST PROTECTION operation

A frost protection operation performs heating at the set temperature RSC_F = 15 °C (FC).

1) How to operate

• Pressing the remote controller [ZONE1, 2] button and then the [FROST PROTECTION] button starts a heating operation at the set temperature of 15 °C.

• Pressing again the [FROST PROTECTION] button cancels the FROST PROTECTION operation.

• The remote controller displays "F" as the temperature during FROST PROTECTION.

• A set temperature change during a FROST PROTECTION operation cancels the operation.

2) Automatic stop of frost protection operation

• The operation period of frost protection can be set at FC 12 and 13 on the remote controller.

Longest period available: 20 days and 23 hours

• By entering the operation period (day and hour) at FC 12 and 13 on the remote controller and pressing the [Frost

Protection] button, the operation period is set and the frost protection operation will automatically be finished after the period has passed.

• The operation period setting (day and hour) is stored in the memory.

Related FC

FC No.

3A

Setting item

FROST PROTECTION Yes / No

3B FROST PROTECTION Set temperature

12 (Remote controller) FROST running period (days)

13 (Remote controller) FROST running period (hours)

Default

1: Yes

15 °C

0

0


0: No

10-20 °C

0-20 days

0-23hours



Item

8-2.


Method


12) AUTO operation

An auto operation sets the water temperature TSC_F depending on the outside air temperature TO.

1) How to operate

• Pressing the remote controller [ZONE1, 2] button and then the [AUTO] button starts AUTO operation for heating.

• During an AUTO operation, pressing again the [AUTO] button returns to the usual manual set heating operation.

• The remote controller displays "A" as the temperature during an AUTO operation.

(When 2-temperature control is enabled, the remote controller displays "A".)

• Long-pressing the [AUTO] button during an AUTO operation activates the Auto-Curve FC change mode, enabling the set Auto-Curve water temperature to be shifted by ±5K range (FC_27). When using the auto curve shift function please note the maximum and minimum water temperature at 60 °C and 20 °C respectively.

• Even if the temperature setting is changed during an AUTO operation, the operation continues.

• An AUTO operation works with a heating operation only, not with a cooling or a hot water supply operation.

<ZONE1>

• An operation starts at the set temperature of straight -line approximation for the following: water temperature A °C with the outside temperatureT0 °C, B °C with T1 °C, C °C with T2 °C, D °C with T3 °C, and E °C with 20 °C.

TSC_F(°C)

A(40)

B(35)

C(30)

D(25)

E(20)

T0

(-20)

T1

(-10)

T2=0

± 5K adjustable (FC 27)

T3

(10)

20 TO

(°C)

Related FC

FC No.

Setting item Default

2C Setting temperature A at T0

2D Setting temperature B at T1

40

35

2E Setting temperature C at T2 (= 0

°C

) 30

2F Setting temperature D at T3

30 Setting temperature E at 20

°C

A1 Outside temperature T0

25

20

-20

29 Outside temperature T1

2B Outside temperature T3

27 Set temperature shift with heating set to auto

-10

10

0 range

20~60 °C

20~60 °C

20~60 °C

20~60 °C

20~60 °C

-30~-20 °C

-15~0 °C

0~15 °C

-5 to 5K

<ZONE2>

• Set temperature of the ZONE2 can be selected from two methods (FC_A2). One is a percentage of ZONE1, the other is a fixed value.

FC_A2 = "0" : Percentage method that is set by FC_31.

FC_A2 = "1" : Fixed value method that is set by FC_A3, A4 and A5.

However, it is automatically controlled the set temperature of ZONE1 to be the ZONE2 or more.

TSC_F(°C)

A(40)

B(35)

C(30)

D(25)

E(20)

FC_A2=0 Percentage method

ZONE 1

ZONE 2

80 % (FC_31) of ZONE1

TSC_F(°C)

A'(40)

B'(35)

T0

(-20)

T1

(-10)

T2=0 T3

(10)

20 TO (°C)

Auto-Curve in ZONE2 shows 80% (FC) of that of ZONE1, the water temperature setting does not fall below 20 °C.

E'(20)

FC_A2=1 Fixed value method

T0

(-20)

T1

(-10)

20 TO (°C)

The ZONE2 set temperature A' °C with the outside temperature T0 °C, B' °C with T1 °C, E' °C with 20 °C.

Related FC

FC No.

A2

Setting item

The choice of how to set ZONE2

A3

A4

Setting temperature A' at T0

Setting temperature B' at T1

A5

31

Setting temperature E' at 20 °C

Auto-Curve ratio of ZONE2

Default

0

40

35

20

80 range

0 or 1

20~60 °C

20~60 °C

20~60 °C

0~100%

46


Item

8-2.


Method


13) Night time low-noise operation

A night time low-noise operation reduces operation frequency and the number of outdoor fan rotations for a certain period during night time as noise control for urban operation.

Maximum operation frequency 40.2 Hz (Hot water supply/Heating/Cooling)

Maximum fan tap 500 rpm (P804HR-E1, P1104HR-E1)

The night time low-noise operation is enabled / disabled by changing the remote controller FC_09.

<How to set> - Refer to “11. Night time Low-noise Setting” on page 131.

1) Press the TEMP. and TEST button at the same time for 4 seconds or longer. (Shifted to the night time lownoise setting mode)

The Code No. field displays "09", and the DATA "0000", , and being displayed blink.

2) Press TIME to set enable "1" or disable "0".

Pressing SET change DATA and display to be lit and the setting is confirmed.

(When "1" as enable is set, the night time low-noise setting is enabled, the control starts at the set start time.)

3) Press TEST original status.

to exit the night time low-noise time setting mode. The and goes out, returning to its



Item Operation flow and applicable data, etc.

8-3.

Hydro Unit Control

1) Capacity control (compressor, high-temperature release, low-temperature release)

This unit controls the compressor frequency and heater output so that the water outlet temperature matches the remote controller set temperature.

1-1) Compressor control

• Calculates the different between the remote controller set temperature (TSC_H, TSC_F) and the water outlet temperature (Hot water supply: THO, Heating: TWO).

• Sets the Hz signal correction amount that determines the number of compressor rotations by the temperature difference.

• Detects the number of compressor rotations.

• Compares the Hz signal correction amount and the current operation Hz, and changes the compressor output according to the difference.

* The control details are the same for hot water supply, heating, and cooling.

Remote controller

Temperature settings

(TSC_H, TSC_F)

Hydro unit

Water outlet temperature

(THO, TWO)

TSC_H-THO for hot water supply

TSC_F-TWO for heating/cooling

Hz signal correction

Number of compressor rotation detection

Hz signal correction

≤ Operation Hz

Inverter output change

Number of compressor rotation change

Compressor frequency changeable range 10 Hz to 70 Hz (P804HR-E1)

10 Hz to 90 Hz (P1104HR-E1)




8-3.

Hydro Unit Control

1-2) Low temperature release control

A heat pump operation is performed as shown in the table below according to the TC sensor detecting temperature.

• For the detected temperature, TC = TWO of a heat pump operation is used. The values of T7 through T10 varies depending on TWI. (See the table below)

• If the compressor frequency instruction from the hydro unit is less than 10 Hz, the compressor stops.

• TC < 3 °C causes the compressor to stop abnormally. When the compressor restarts when 140 seconds has passed after the stop and TC < 3 °C is not detected for 20 minutes, the abnormal stop counter is cleared. 10 times of compressor abnormal stop stops the operation of heat pump, and fault code A11 is displayed on the remote controller.

* If the heat pump operation is switched to other operation, the abnormality detection counter is reset to 0.

TC (TWO)

T7

R1

(slow up)

T8

T9

T10

T11

S (normal)

R2 (slow up)

Q (keep)

P (slow down)

O (down)

Forcible stop

Zone

R1

R2

O

P

Q

Control operation

Increase compressor frequency by 0.8 Hz every

60 sec.

Increase compressor frequency by 0.4 Hz every

60 sec.

Decrease compressor frequency by 4.5 Hz every

10 sec.

Decrease compressor frequency by 2.4 Hz every

10 sec.

Keep compressor frequency.

TC=TWO

TWI

TWI<10

10

≤ TWI<15

15

≤ TWI<20

20

≤ TWI

T7

8.0

8.5

9.0

9.5

T8

6.0

6.5

7.0

7.5

T9

4.0

4.5

5.0

5.5

T10

3.0

3.4

4.0

4.5

(°C)

T11

2.5

2.5

2.5

2.5

1-3) Freeze release control (TC+TWO release control)

For freeze prevention, the compressor is controlled during cooling operation as shown in the table below according to the calculated values of TC and TWO.

• If TC + TWO falls below -15 for a total of 10 times, the compressor stops abnormally and fault code A10 is displayed on the remote controller.

• When cooling operation has lasted normally for 10 minutes, the abnormality detection counter is reset to 0.

TC+TWO

T7

T8

T9

TC+TWO

T7

6.0

T8

4.0

T9

-15

S : Normal

P : Down

O : Down

Forced stop

Zone

S (normal)

P (slowdown)

O (down)

(Forced stop)

Control operation

Normal cooling operation

Decrease compressor frequency by approx.

2.0 Hz every 10 sec.

Decrease compressor frequency by approx.

4.0 Hz every 10 sec.

Stop the compressor.




8-3.

Hydro Unit Control

2) Heater control

2-1) Hot water supply operation

During a hot water heat pump operation, the unit energizes the hot water cylinder heater (2.7 kW) when all the following conditions are met. Note that when the hot water supply set temperature (TSC_F) is reached, the unit stops energizing the heater.

• When 30 minutes has passed after the hot water heat pump operation started.

• The water inlet temperature (TWI) reaches 50 °C.

• The hot water cylinder sensor reaches the HP_OFF temperature (45 °C-FC).

• The HP_ON temperature (38 °C-FC) is reached without the hot water HP status.

• HOT WATER BOOST operation is in progress.

TTW

85

Z zone

Y zone

Heater off

Abnormality detection (A03 displayed)

Diff : 2K

TSC_H

Heat pump_OFF(45)

X zone

Heater on

TSC_H-4

Hot Water Boost

Heater on only with

Hot Water Boost in operation

Heat pump_ON (38 °C)

(Hot water heat pump)

(Heater on without

hot water heat

pump)

2-2) Heating operation

1) Heater control at the time of heat pump operation

• Object to be controlled: Backup heater

The backup heater control starts when 13 minutes has passed after the heating heat pump operation started and select the ZONE (A-D). The backup heater control increases, decreases, or maintains the number of heaters every 10 minutes (FC) depending on the difference between the heating set temperature (TSC_F) and the heater outlet temperature (THO). When the heating set temperature (TSC_F) is reached, the hydro stops energizing the backup heater.

THO

E zone

70

D zone

TSC_F-0

(+2)

*1

TSC_F-2

C zone

B zone

TSC_F-4

A zone

Abnormality detection (A02 displayed)

Heater off

Diff : 2K

Heater output down every

5, 10, 15, or 20 minutes

KEEP

Diff : 2K

*1 HWS-P804 only

Diff : 2K

Heater output up every

10, 20, 30, or 40 minutes

Status

Heater 1

Heater 2

Heater ON/OFF

Backup-heater 3 kW = ON

Backup-heater 9 kW = ON

(1) The single - phase model has the backup heater 1 of 3 kW only.

(2) The three - phase model has the backup heater 1 + 2 of 6 kW.

• Restriction of backup heater energization during heating mode (For energy saving)

When outdoor temperature is higher than the reference valve, the backup heater is forcibly off during heating mode.

Related FC

FC No.

B8

Setting item

Forcibly heater off at TO

≥ A °C

Default

no restriction


-5 ~ 20 °C

50


Item

8-3.

Hydro Unit Control


2) Control at the time of heating heater operation

• Controlled Object: Backup heater, Booster heater

The backup heater control starts when 13 minutes has passed after the heating heat pump operation started.

The backup heater control increases, decreases, or maintains the number of heaters every 10 minutes (FC) depending on the difference between the heating set temperature (TSC_F) and the heater outlet temperature

(THO). Note that when the heating set temperature (TSC_F) is reached, the unit stops energizing the heater.

THO

70

E zone

D zone

TSC_F+2

C zone

TSC_F-0

B zone

TSC_F-2

A zone

Abnormality detection

Heater off

Diff : 2K

Heater output down every

5, 10, 15, or 20 minutes

Diff : 2K

KEEP

Diff : 2K

Heater output up every

10, 20, 30, or 40 minutes

Status

Heater 1

Heater 2

Heater 3

Heater ON/OFF

Backup heater 3 kW = ON

Backup heater 9 kW = ON

Heater 2 + Booster heater

The single-phase model of 3 kW has the backup heater 1 only.

The three-phase model of 6 kW has heater 1+2 of 6 kW.

Booster heater operation come only output signal. (Booster heater activate under heater only mode)

Related FC

FC No.

20

21

33

34

Setting item

Hot water supply heat pump start temperature

Hot water supply heat pump stop temperature

Heater control of down time

Heater control of up time

Default

38 °C

45 °C

1:10 min

0:10 min


20-45 °C

40-50 °C

0:5 min 2:15 min 3:20 min

1:20 min 2:30 min 3: 40 min

2-3) Heater control at the time of defrosting


When a defrosting operation starts during the heating heat pump operation, the unit energizes a backup heater (3 kW) according to the heater outlet temperature sensor (THO) and the set temperature (TSC_F) as shown in Figure.

1) When the heater outlet temperature sensor (THO) drops to the temperature of 2 °C below the TSC_F-

β, the backup heater is energized.

β can be changed for energy saving.

Defrosting ends according to the usual heater control.

THO

Heater OFF

TSC_F - β

Heater ON diff: 2K

Status Heater ON/OFF

Heater 1 Backup heater 3 kW = ON

Related FC

FC No.

B9

Setting item

β : 0 = 0K, ···, 4 = 40k

Recommendation :

β = 2(20k)

Default

0K


0k - 40k

2-4) Forcible heater energization

To prevent freeze, the unit energizes or stops energizing a backup heater (3 kW) regardless of the unit status, not operated or in operation.


1) Energization start condition: TWO < 4 or TWI < 4 or THO < 4

2) Energization stop condition: TWO

≥ 5 and TWI ≥ 5 and THO ≥ 5

Defrosting ends according to the usual heater control.

51



8-3.

Hydro Unit Control

2-5) No heater operation

According to the DP_SW11 setting, the unit switches the energize / not energize for the hot water cylinder, backup

heater, and booster. For details, see 10-1-4. (See page 118)

(Caution)

All heater should be added to this Air to water system.

The system has been designed to operate with all electrical heaters energized.




8-3.

Hydro Unit Control

3) Circulation pump control

One circulation pump (enhancing pump P2) can be connected to the unit in addition to the built-in circulation pump P1.

You can change the settings of the built-in pump P1 and the enhancing pump P2 using DP_SW10-1, 2, and

3 in the hydro unit.

Item

Water pump

DPSW10

Operation

01: Built-in pump P1’s action during how water supply operation:

HP operation only / Always energized

02: Built-in pump P1’s action during heating operation:

Always energized / Turned off when TO sensor detect over than 20 °C.

03: Enhancing pump P2’s action:

Non-synchronous / Synchronous with the built-in pump P1

04: Pump P1 ON/OFF cycling (During long periods of system off)

Initial value

OFF: HP operation only

OFF: Always energized

OFF: Nonsynchronous

*2

OFF: None

DPSW

SW10-1

SW10-2

SW10-3

SW10-4

If the enhancing pump P2 is set to Non-synchronous, the pump P2 is always energized.

3-1) Controlling the built-in circulation pump P1

Pump type: DC motor, rated voltage 220-230 V, 6 speed (changed manually)

The pump operation starts under the condition below:

• When the [HOT WATER] or [ZONE1,2] button is pressed.

The pump operation stops under the condition below:

• When the [HOT WATER] or [ZONE1,2] button is pressed.

(Operation will stop fully in about 1 minute.)

The pump operation stops/restarts under the conditions shown below.

• When changing operation modes, the pump stops for 30 seconds.

Boiler is installed or not

(DPSW13_2)

OFF

(Not installed)

ON

(Installed)

Boiler position

(DPSW02_1)

OFF (After 3-way valve, heating side)

ON (Before 3-way valve)

OFF (After 3-way valve, heating side)

ON (Before 3-way valve)

P1 pump control

Stop/restart temperatures

(TWI or TWO or THO)

70 °C / 68 °C

70 °C / 68 °C

70 °C / 68 °C

58 °C / 55 °C

FC_code A0 Pump flow rate

0 (Default)

1

100%

90%

4

5

2

3

80%

70%

60%

50%

3-2) Controlling the built-in pump P1 during the hot water supply operation

You can change the action of the built-in pump P1 during the hot water supply operation using DP_SW10-1.

• DP_SW10-1 OFF (Default): The pump stops as the HP for hot water supply stops.

• DP_SW10-1 ON: The pump is always energized.

3-3) Controlling the built-in pump P1 during the heating operation

You can change the action of the built-in pump P1 during the heating operation using DP_SW10-2.

• DP_SW10-2 OFF (Default): The pump is always energized.

• DP_SW10-2 ON : The pump stops when To

≥ 20 °C. (Practically the HP for heating is turned off.)

3-4) Synchronized circulation pump P2

Pump type: DC motor, rated voltage 220-230 V, connectable directly up to 200W rated power output.

You can select whether the pump P2 is synchronized with the pump P1 using DP_SW10-3. The pump P2 is always energized if the pump P2 is not synchronized.

• DP_SW10-3 OFF (Default): Non-synchronous

NOTE:

2 zone temperature control by boiler with P1 OFF is required DP_SW10-3 OFF

3-5) Controlling the enhancing pump P2

Charging the action of the enhancing pump P2 during cooling operation by setting FC64.

• FC64=“00”(Default): The pump is always energized.

• FC64=“01” : The pump is always stopped.




8-3.

Hydro Unit Control

3-6) Controlling the built-in pump P1 during cooling operation controlled with the room temperature thermostat or room temperature remote controller.

Charging the action of the built-in pump P1 by setting FC65.

• FC65=“00”(Default): The pump is always energized.

• FC65=“01” : The pump is stopped when the thermostat is turned off.

3-7) Interval operation of the pump P1 during thermostat off operation (For energy saving)

The pump of the hydro unit performs intermittent operation according to the outdoor temperature during thermostat off (compressor off) operation.

NOTE:

When boiler is installed (DPSW13_2 : ON), do NOT set intermittent operation or do NOT set the valve of A

(FC_BA) lower than the Boiler-heatpump switching temperature (FC_23).

A, lower limit of To during the heating operation, must be higher than the Boiler-heatpump switching temperature.

Because when To is lower than the Boiler-heatpump switching temperature, the boiler output is ON state. But if the pump stops due to the intermittent operation, the boiler output is also turned OFF.

Related FC

FC No.

5A

64

65

9E

6E

BA

BB

Setting item

Control of the pump P1 during the hot water supply operation

Default

0: synchronized

with HP

Control of the pump P2 during in cooling operation 0: Always ON

Control of the pump P1 while using the room temperature control or room temperature thermostat

0: Always ON

Turn off the P1 when TO sensor detect over than this temperature 0: 20 °C

Pump P1 restart diff TO sensor temperature, when turn off the P1 by to sensor detection.

intermittent operation at

TO

≥ A °C (heating) intermittent operation at

TO < B °C (cooling)

2: 2K

Setting value

1: Always energized

Equal to DPSW10-1

1: Always stopped

1: Stopped when the thermostat is OFF

10~30 °C

1~5K

0: continuous operation -5 ~ 20 °C

0: continuous operation 25 ~ 35 °C




8-3.

Hydro Unit Control

4) Control by the flow switch

Whether water flows or not is judged with the ON/OFF of the flow switch.

Model

HWS-P804**-E1

HWS-P1104**-E1

Determined that water flows when:

13L or more water flows per minute

18L or more water flows per minute

Determined that water does not flow when:

Water less than 13L flows per minute

Water less than 18L flows per minute

Without water-flow determination from the flow switch after the hot water supply operation, heating operation, or cooling operation, The HP, backup heater and booster heater are not energized. Similarly, The “A01” error indication flashes if the flow switch judged that water does not flow.

The specification of the flow switch is the same in P804**-E1 and P1104**-E1. The flow setting differs due to the specification of piping in the hydro unit.

5) Mixing Valve control (2-temperature heating control)

To set different radiator unit supply temperatures or floor heating supply temperatures, the unit performs Mixing Valve control.

When Mixing Valve "Yes" is selected, the unit controls Mixing Valve every 4 minutes (FC) based on the difference TSC_

Δ

T between the Zone2 set temperature and TFI (floor inlet water temperature sensor) temperature as follows:

TSC_

ΔT

Control value

2

≤ TSC_

ΔT

+ 1 step (Open)

-2

≤ TSC_

ΔT < 2

± 0 step

-2 > TSC_

ΔT

- 1 step (Close)

Initial value

6

Driving range

0-12

1 step

3 WV move 7.5 degrees

Control cycle

4 min (FC)

To enable 2 zone temperature control switch DP_SW12-3 to ON.

NOTE:

The mixing valve will automatically be reset if 24 hours pass with the valve fully closed.

2 zone temperature control by boiler with P1 OFF is required DP_SW10-3 OFF.

Related FC

FC No.

0C

59

Setting item

Mixing Valve operation time

Mixing Valve control time

Default

60

4


30 - 240 sec

1 - 30 min

6) Room temperature control

You can install a sub remote controller (separately purchased) in a room to control room temperature.

6-1) Installing the sub remote controller

• Wiring with the main unit (See the figure on the right) : After detaching the front panel, connect the sub remote controller to the right terminal on the main remote controller, which is connected with the hydro unit. (No polarity)

• Place to install (inside a room): At the height of 100 cm-150 cm on a wall

Opposite to the radiator or fan coil installed

No assignment when floor heating is used on the room.

Right terminal on the main remote controller

6-2) Room temperature control settings

• Function code setting:FC_40="1"

• Setting of DPSW on the remote controller :

DP_SW01,02=“ON”(DP_SW03,04=“OFF”)

Connecting terminal on the remote controller

DP_SW01,02=“ON”

(DP_SW03,04=“OFF”)




8-3.

Hydro Unit Control

6-3) Control method

• The water temperature setting at starting operation is 40 °C (FC_9D) at heating and 20 °C (FC_96) at cooling.

If the temperature setting calculated by Auto curve at starting operation will be used instead of the fixed temperature 40 °C (FC_9D), FC_B5 should be set to “1”.

• The target water outlet temperature is adjusted by 1deg every 30 minutes based on the TSC_rc, the temperature setting on the remote controller, and the room temperature (temperature indicated on the remote controller: T_rc).

The adjustable range of water temperature is set with FC18-1B.

• The temperature set on the remote controller and actual room temperature may differ depending on the place of the remote controller or room space. In that case, adjust temperature detection using FC02 (for heating) and FC03

(for cooling) on the remote controller.

Warm-mode

TSC_rc+2K

A’ zone:Thermo off

A zone:Thermo off

TSC_rc+1K

B zone:Down water temp

TSC_rc

C zone:Keep water temp

TSC_rc-0.5K

D zone:Up water temp

Cool-mode

TSC_rc+0.5K

TSC_rc

TSC_rc+0K

TSC_rc-1.0K

D zone:Down water temp

C zone:Keep water temp

B zone:Up water temp

A zone:Thermo off

How to shift up/down the temperature by remote controller FC02, 03

• Ambient temperature (remote controller) is higher than room temperature: example. 1deg

Change remote controller FC02, 03 = “-1K” to “-2K”

• Ambient temperature (remote controller) is lower than room temperature: example. 1deg

Change remote controller FC02, 03 = “-1K” to “0”

T_rc

D zone

C zone

B zone

A zone

A’ zone

Correction control

Heating

Setting is corrected upward

Water temperature setting is up by 1deg every 30 minutes.

No correction

Setting is corrected downward.

Water temperature setting is down by 1deg every 30 minutes.

Thermo off. But if inlet water detect less 25 °C, then heat pump restart.



Thermo off

Cooling



No correction



Thermo off

Related FC

FC No.

18

19

1A

1B

40

96

9D

Setting item

Upper limit of cooling temperature setting

Lower limit of cooling temperature setting

Upper limit of heating temperature setting (Zone 1)

Lower limit of heating temperature setting (Zone 1)

Room temperature control

Initial water temperature setting when controlling cooling by the room temperature remote controller and room temperature thermostat

Initial water temperature setting when controlling heating by the room temperature remote controller and room temperature thermostat

02 (Remote controller) Room temperature correction (at heating)

03 (Remote controller) Room temperature correction (at cooling)

B2

B5

Heat pump restart water condition in A zone.

Choose of the initial setting temperature.

Either use the temperature set in FC_9D, or use the temperature calculated by Auto curve.

This applies heating operation only.

40

-1

-1

25

0

Default

25

7

60

20

0

20

Variable range

18-25 °C

7-18 °C

37-60 °C

20-37 °C

0:Not permitted 1:Permitted

10-25 °C

20-60 °C

-10K - +10K, 1K step

-10K - +10K, 1K step

20-37 °C

0 : Use the temperature set in FC_9D

1 : Use the temperature calculated by Auto curve




8-3.

Hydro Unit Control

7) Room temperature control with the thermostat

You can install a commercially available thermostat to control room temperature.

7-1) Installing the room temperature thermostat

• TCB-PCM03E optional PC board is required. Connect its connection cable to CN211 port on the PC board of the hydro unit.

• Wiring to the main unit: connect the optional PC board TCB-PCM03E to the hydro unit after detaching the front panel.

Thermostat for heating : Connect TCB-PCM03E between the terminals (1) and (3).

Thermostat for cooling : Connect TCB-PCM03E between the terminals (2) and (3).

• Place to install (inside a room): At the height of 120 cm-180 cm on a wall

Opposite to the radiator or fan coil installed

No assignment when floor heating is used on the room.

7-2) Room temperature thermostat control setting

• Setting of DPSW on the hydro unit :

DP_SW02_4=“ON” (Default “OFF”)

TCB-PCMO3E

PJ17

CN210

Red

CN211

Black

Terminal label

7-3)Heating thermostat operation

When the heating thermostat does not reach the assigned temperature (the circuit between (1) and (3) is closed), heating starts under the setting that water temperature for heating is 40 °C (FC_9D). If the heating thermostat has not reached the assigned temperature 30 minutes after heating had started, the water temperature setting is turned up 1 degree, and the same action will be repeated every 30 minutes until the thermostat reaches the assigned temperature.

The backup heater and booster heater are controlled in the same way as in the normal HP operation.

When the heating thermostat reaches the assigned temperature (the circuit between (1) and (3) is open), the heat pump shifts to the “thermostat off” operation. During the operation, the water temperature setting is turned down by 1 degree every 30 minutes. The backup heater and booster heater are tuned off as the heat pump shifts to the

“thermostat off” operation.

7-4)Cooling thermostat operation

When the cooling thermostat does not reach the assigned temperature (the circuit between (2) and (3) is open), cooling starts under the setting that water temperature fro cooling is 20 °C (FC_96). If the cooling thermostat has not reached the assigned temperature 30 minutes after cooling had started, the water temperature setting is turned down

1 degree, and the same action will be repeated every 30 minutes until the thermostat reaches the assigned temperature.

When the cooling thermostat reaches the assigned temperature (the circuit between (2) and (3) is closed), operation shifts to the “thermostat off” operation. During the operation, the water temperature setting is turned up by 1 degree every 30 minutes.

Room thermostat Correction control

CLOSE

OPEN



Heating operation Cooling operation

Thermo on

The water temperature setting is turned up by 1 degree every 30 minutes.

Thermo off

The water temperature setting is turned up by 1 degree every 30 minutes.

Thermo off

The water temperature setting is turned down by 1 degree every 30 minutes.

Thermo on

The water temperature setting is turned down by 1 degree every 30 minutes.

Related FC

FC No.

9D

96

B5

Setting item

Initial water temperature setting when controlling heating by the room temperature remote controller and room temperature thermostat.

Initial water temperature setting when controlling cooling by the room temperature remote controller and room temperature thermostat.

Choose of the initial setting temperature.

Either use the temperature set in FC_9D, or use the temperature calculated by Auto curve.

This applies heating operation only.

Default

40

20

0

Variable range

20-60 °C

10-25 °C

0 : Use the temperature set in FC_9D

1 : Use the temperature calculated by Auto curve

57



8-3.

Hydro Unit Control

8) Hot water cylinder thermostat control

Hot water can be supplied using an existing hot-water cylinder with a thermostat.

8-1) Installing the hot-water cylinder thermostat

• Optional board : TCB-PCM03E optional PC board is required. Connect its connection cable to CN210 port on the

PC board of the hydro unit.

• Wiring with the main unit : After detaching the front panel, install TCB-PCM03E optional PC board in the hydro unit.

Hot-water cylinder heating thermostat : Connect this thermostat between (1) and (2) on TCB-PCM03E.

• Place to install the thermostat (hot-water cylinder) : At a height of 30 to 50 cm from the base.

• Hot-water heater : A hot-water heater is required. (Without a hot-water heater, the hydro unit will not work.)

8-2) Setting the hot-water cylinder thermostat

Setting of DPSW on the hydro unit : DP_SW02_3 = “ON” (Default “OFF”)

TCB-PCMO3E

PJ17

CN210

Red

CN211

Black

Terminal label

8-3) Hot-water thermostat operation (hot-water supply operation only)

If hot water is used when the hot-water thermostat is at the assigned temperature (the circuit between (1) and (2) is open), the hot-water heat pump starts with the hot-water thermostat closed.

After 30 minutes, the hot-water cylinder heater turns on, but the hot-water heat pump continues running until the hotwater cylinder thermostat becomes open.

It should be noted, however, that the hot-water heat pump might stop if the water input temperature becomes high.

8-4) Hot-water thermostat operation (hot-water supply + heating operation)


In 30 minutes, the hot-water heat pump stops. After that, only the hot-water cylinder heater is used to raise water temperature.

The heat pump switches to heating operation. Unless the hot-water cylinder thermostat temperature rises, the hotwater heat pump will never take over.

8-5) Hot-water thermostat operation (hot-water supply + cooling operation)

For automatic switching to hot-water supply plus cooling operation, FC-0F is required.


In 30 minutes, the hot-water heat pump stops. After that, only the hot-water cylinder heater is used to raise water temperature.

The heat pump switches to cooling operation. Unless the hot-water cylinder thermostat temperature rises, the hotwater heat pump will never take over.

Related FC

FC No.

0F

Setting item

Hot water HP allowance while cooling + hot water supply

Default

0:Not allow

Setting value

1:Allow




8-3.

Hydro Unit Control

9) Control of force stop and restart

The unit can be stopped and restarted with external input. By setting FC52 and FC61 and FCB6, you can set an operation mode to run/stop or can run/stop the unit in the mode assigned on the remote controller.

• TCB-PCM03E optional PC board is required.

Connect its connection cable to CN210 port on the PC board of the hydro unit.

TCB-PCMO3E

PJ17

CN210

Red

CN211

Black

Terminal label

9-1)Setting the control method

Select a control method by setting FC52.

• FC52=“0”:Stops ESTIA as the circuit between the terminals (1) and (3) is closed. (Default)

• FC52=“1”:Stops ESTIA as the circuit between the terminals (1) and (3) is opened.

• FC52=“2”: Starts ESTIA as the circuit between the terminals (1) and (3) is closed.

Stops ESTIA as the circuit between the terminals (1) and (3) is opened.

• FC52=“3”:Starts/Stops ESTIA as the circuit between the terminals (1) and (3) is received closed plus.

9-2)Setting the object to control

Select an operation mode by setting FC61.

• FC61=“0”:Hot water supply and heating (Default)

• FC61=“1”:Follows the setting on the remote controller (If the hot water supply operation, heating operation, or hot water supply + heating operation is started manually after the unit was stopped with an external input, the new status is reflected to the setting on the remote controller.)

• FC61=“2”:Hot water supply only

• FC61=“3”:Heating only

It is possible to control each of the heating and hot water supply with the following settings:

• FCB6=“1” (Default “0”) and FC61=“3” and DP_SW02_3=“OFF” (Default “OFF”)

The terminals (1) and (3) is the heating control.

The terminals (2) and (3) is the hot water supply control.

Both of control method is selected by FC52.

9-3)Cautions

The circuit between the external input terminals (1) and (3) is also used to control the limit of heat pump operation.

You cannot use the forced stop control when the circuit is configured to control the limit of heat pump operation. (See

page 61)

9-4)Setting example

• When you want to turn on/off the unit with static external input reflecting the operation setting on the remote controller

(hot water supply, heating, or hot water supply and heating).

FC52=“2”, FC61=“1”

Operation status 1

Operation status 2

Operation status 3

Operation status 4

×

Heating

Hot water

RC on condition

RC off condition

FC61=1 & FC52=2

Operation pattern

×

×

↓ open signal input

×

×

Heating

Hot water

×

×

×

×

↓

×

×

×

× close signal input

Heating

Hot water

Heating

Hot water

×

×

×

↓

×

×

× ×

× open signal input

×

×

×

×

Manually ON/OFF change by remote controller close signal input

59


Item

8-3.

Hydro Unit Control


Basic operation logic

There are 4 operation combination pattern for Heating & Hot water

When open signal is input, the operation status change to the next status.

For example, if current operation status is heating ON and hot water OFF, then next status to be heating OFF & hot water OFF when pulse is input Hydro unit memorize the status of the operation pattern before changing OFF status by close signal.

If pulse is input at operation status 2, the operation pattern in the status 3 is same pattern in the status 1.

Manually ON/OFF

If customer change operation pattern manually by remote controller, change then operation pattern will not be same as the basic logic.

1. If customer stop operation (Heating off and hot water off) by the controller, then both heating& hot water are not to be ON with close or open signal.

2. If the unit is stopped (Heating off and hot water off) by open signal, operation pattern will be referred to the pattern before the unit OFF by close signal.

• When you want to turn on/off with the pulse input reflecting the operation setting on the remote controller (hot water supply, heating, or hot water supply and heating).

FC52=“3”, FC61=“1”

Operation status 1

Operation status 2

Operation status 3

Operation status 4

×

Heating

Hot water

RC on condition

RC off condition

FC61=1 & FC52=3

Operation pattern

×

×

↓

Pulse input

Heating

Hot water

Heating

Hot water

×

×

×

×

↓

×

×

Pulse input

×

Heating

Hot water

×

×

×

↓

×

×

Pulse input

×

×

×

×

×

×

Manually ON/OFF change by remote controller

Pulse input

There are 4 operation combination pattern for Heating & Hot water

When pulse signal is input, the operation status change to the next status.

For example, if current operation status is heating ON and hot water OFF, then next status to be heating OFF & hot water OFF when pulse is input Hydro unit memorize the status of the operation pattern before changing OFF status by pulse signal.

If pulse is input at operation status 2, the operation pattern in the status 3 is same pattern in the status 1.

If customer change operation pattern manually by remote controller, then operation pattern will not be same as the basic logic.

1. If customer stop operation (Heating off and hot water off) by the controller, then both heating& hot water to be ON with pulse input.

2. If the unit is stopped (Heating off and hot water off) by pulse input, operation pattern will be referred to the pattern before the unit OFF by pulse.

Related FC

FC No.

52

61

Control method

Object to control

Setting item Default

0

0

Setting value

0-3 (See 10-2-2 (See page 119))

0-5 (See 10-2-2 (See page 119))




8-3.

Hydro Unit Control

10) Control of limit of heat pump operation

When the peak period of electric power charge is set due to the contract or other conditions, you can limit heat pump operation and give priority to boiler operation using an external input signal. (This control functions only during the period the signal is input.)

• TCB-PCM03E optional board is required.

Connect its connection cable to CN210 port on the PC board of the hydro unit.

TCB-PCMO3E

PJ17

CN210

Red

CN211

Black

Terminal label

10-1)Setting the control method

Select an operation mode by setting FC61.

• FC61=“4”:Hot water cylinder heater = OFF, backup heater = OFF (Built-in pump is ON.)

• FC61=“5”:Hot water cylinder heater = OFF, backup heater = OFF, heat pump = OFF, Built-in pump is stopped.

10-2)Control summary

When the TEMPO signal is input (the circuit is closed), the boiler signal is output regardless the outside temperature and devices are turned off following the setting on FC61.

1. Basic operation: heating operation using the boiler

2. Switching to hot water supply: the water circuit is switched to the hot water supply side as the unit detect that TTW is less than 38 °C.

3. Switching to heating: the water circuit is switched to the heating side as the unit detect that TTW is 45 °C or more, or 30 minutes has passed since operation started. Heating operation continues at least 30 minutes.

4. The LED on the PC board lights up when the input signal is ON.


(TCB-PCIN3E optional PC board is required. Connect its connection cable to the CN208 terminal on the PC board in the hydro unit.)

• The circuit between the terminals (1) and (2) gets closed as an error detection signal is output.

• The circuit between the terminals (3) and (4) gets closed as a boiler signal is output.

The LED on the PC board lights up when the signals are output.


(TCB-PCIN3E optional PC board is required. Connect its connection cable to the CN209 terminal on the PC board in the hydro unit.)

< FC67=“0”: Default >

• The circuit between the terminals (1) and (2) is closed during defrosting.

• The circuit between the terminal (3) and (4) is closed while the compressor is running.

TCB-PCIN3E

PJ20

CN208

Blue

< FC67=“1” >

• The circuit between the terminals (1) and (2) gets closed as an error is detected.

• The circuit between the terminals (3) and (4) is closed during operation (when the remote controller is ON)

The LED on the PC board lights up when the signals are output.

Related FC

FC No.

67

Setting item

Changing the condition of optional output (For the optional PC board connected to CN209)

Terminal label

CN209

Green

Default

0: 1-2 During defrosting

2-4 While compressor is running.

Setting value

1: 1-2 As error is detected

2-4 During operation

61



8-3.

Hydro Unit Control

13) Q-H characteristics of hydro unit

The following shows the Q-H characteristics.

13-1)HWS-P804XWHM3-E1, T6-E1, T9-E1

Hydraulic heat exchanger (8 kW) QH characteristics

Minimum flow rate

10

Hydro unit QH-

Characteristics (220/230 V)

9

8

7

6

5

4

3

Out of range

Pump duty

100 %

5

4

3

2

1

0

0

2

1

Pump duty

60 %

Pump duty

80 %

0

0 5 10 15 20

Flow rate [L/min]

12-2)HWS-P1104XWHM3-E1, T6-E1, T9-E1

Hydraulic heat exchanger (11 kW) QH characteristics

Minimum flow rate

10

9

25 30

Hydro unit QH-

Characteristics (220/230 V)

8

Out of range

7

Pump duty

100 %

6

Pump duty

60 %

10

Pump duty

80 %

20

Flow rate [L/min]

30 40

35

50




8-3.

Hydro Unit Control

14) Automatic restart control

The unit records operation information before a power outage and retrieves the information after the power is restored to restart automatically the operation with the information.

14-1)Operation during remote controller

• The operation status before a power outage automatically restarts after the power is restored. (The merit functions are also enabled)

• Approximately 6 hours or more after a power outage

The operation status before a power outage automatically restarts after the power is restored.

But the merit functions (Night Set Back, Anti Bacteria) are disabled.

The remote controller time displays "--:--". (The merit functions are disabled)

14-2)Operation during forcible automatic operation

A forcible automatic operation is performed when the power is restored after a power outage.

14-3) Operation during defrosting operation

When the power is restored after a power outage, the usual operation restarts.

Note: The operation details recorded before a power outage

Operation mode: Hot water supply, Heating, Cooling, Hot water supply + Heating, Hot water supply + Cooling

Set temperature: Hot water set temperature, Heating set temperature, Cooling set temperature

Merit function: Hot water supply operation (Anti Bacteria)

Heating operation (Night Set Back)

15) Piping freeze prevention control

This control operates when the power is on regardless the remote controller setting ON or OFF.

To prevent frost bursting of the water piping for hot water supply and heating, the unit flows water with the circulation pump when the temperature sensor value falls below a certain temperature.

15-1)Piping freeze prevention control 1

1) Start condition: TWO < 4 °C or THWI < 4 °C.or THO < 4 °C

2) End condition: TWO

≥ 5 °C and TWI ≥ 5 °C and THO ≥ 5 °C

3)-1 How to operate (circulation pump)

• When the circulation pump is not in operation, if the sensor detects the freeze prevention control start temperature, the unit operate the circulation pump.

• During a freeze prevention operation, a heat pump operation does not start.

• When neither [HOT WATER] nor [ZONE1, 2] is in operation, if the end condition is not met when 3 minutes has passed after an operation starts, the unit performs the operation in 3)-2 to prevent freeze.

3)-2 How to operate (circulation pump + backup heater)

• When neither [HOT WATER] nor [ZONE1, 2] is in operation, if the end condition is not met when 3 minutes has passed after an operation starts.

• End condition: TWO

≥ 5 °C and TWI ≥ 5 °C and THO ≥ 5 °C

• Heating with the set temperature 55 °C operates.

3)-3 Abnormal stop

• If a freeze prevention operation continues for 30 minutes and does not meet the end condition, the operation stops as abnormal stop. (Remote controller check code: A05)


TC and TWO activates freeze prevention regardless of a heat pump operation mode.

1) Determination condition: TWO>20 °C. 2*TC+TWO<-12 °C is continuously detected for 180 seconds or longer.

Or TWO

≤ 20 °C. TC+TWO<4 °C is continuously detected for 180 seconds or longer.

2) Determination cancellation conditions

• The stop or operation mode is changed by the remote controller

• The mode is defrosting at the time of determination

At the next time of defrosting, the start condition is not met.

• The mode is other than defrosting at the time of determination

After cooling, heating, hot water heat pump restarts, the start condition is not met for 10 minutes.

3) Error display

• If freeze determination cancellation condition is not met, A04 error is displayed.


This control applies only when defrosting is in operation.

1) Determination condition: During defrosting, TWI

≤ 15 °C is continuously detected for 30 seconds or longer (After the stop, the unit restarts.)

2) Determination cancellation condition

• At the next time of defrosting, the start condition is not met.

3) Error display


63



8-3.

Hydro Unit Control


When the value of Ps sensor is low, freeze prevention is activated regardless of a heat pump operation mode.

1) Determination condition: Low pressure sensor detects PS < 0.2 MPa and 90 seconds passes (defrosting and cooling) (During a defrosting operation for cooling and heating, or hot water supply)

Low pressure sensor detects PS < 0.2 MPa and 10 minutes passes (heating and hot water supply operation)

2) Determination cancellation condition

• After a restart, the start condition is not met for 180 minutes.

• At the next time of defrosting, the start condition is not met. (Defrosting operation for heating or hot water supply)

3) Error display


16) High return water protect control

The hydro unit protects against high return water which made by separate boiler system.

TWI, TWO, THO

70

A02 error detect

(Diff : 2K)

Heat pump stop

50

Heat pump normal operation

When A02 error appeared, the built-in pump will stop.

Related FC

FC No.

62

Setting item

Activate/deactivate A02 error detection 0: Activate

Default Setting available range

1: Deactivate

This FC62 function is valid when DP_SW13-2 is ON. (See 10.1-1. Setting switch names and positions)



Item

8-4.



1) PMV (Pulse motor valve) control

Valve opening is controlled using the expansion valve with a pulse motor according to a heat pump operation status.

• PMV is controlled between 30 and 500 pulses during an operation.

• At the time of a cooling operation, PMV is controlled with the usual target value of 1 to 4 K temperature difference between TS sensor and TC sensor.

• At the time of a hot water supply or heating operation, PMV is controlled with the usual target value of -1 to 4 K (for

P804HR-E1, P1104HR-E1) temperature difference between TS sensor and TE sensor.

• For both cooling and heating, if the cycle is overheated, PMV is controlled using the TD sensor. The usual target value is 91 °C for a cooling operation, and 96 °C for a heating operation.

* A defective sensor may cause liquid back flow or abnormal overheat of the compressor, significantly shortening the compressor life. If the compressor or other equipment is repaired, first check that the resistance of each sensor or the refrigerant cycle has no problem, then start the operation.

2) Discharge temperature release control

This control detects an abnormality of the refrigerant cycle or compressor to perform failure prevention.

• This control reduces operation frequency if the PMV control does not lower the outlet temperature or if the outlet temperature rapidly rises. The frequency control is broken down to the unit of 0.6 Hz to stabilize the cycle.

• If the discharge temperature detects the abnormal stop zone, the compressor stops and then restarts after 150 seconds. The abnormality detection counter is cleared when the operation continues for 10 minutes. If detected 4 times, the error code is displayed and the compressor does not restart.

* An abnormality could occur due to too less refrigerant, PMV defective, or cycle stuck.

• For details about an error displayed, see the check code list.

TD [°C]

Abnormal stop

111

Frequency normal down

109

106

103

96

Frequency slow down

Frequency hold

Frequency slow up

(up to the point instructed)

As instructed



Item

8-4.



3) Current release control

The number of compressor rotation is controlled so that current value of the compressor drive circuit does not exceed the specified value.

• The outdoor unit detects the input current.

• The outside air temperature is detected and used to set the specified value of current.

• The number of compressor rotation instructed by the hydro unit is used to determine whether the current value exceeds the specified value.

• If exceeds, the number of compressor rotation is reduced to the most approximate number instructed by the hydro unit within the specified value range.

Outdoor unit current inverter

Main circuit control current

Outside air temperature (TO)

Current release point setting

Operation current

≤ Settings

Yes

No

Compressor operation Hz down

Current degradation

Heating, Hot water supply

Capacity control continue

Outside temperature

TO (degree °C)

27.5

≤ TO

15

≤ TO < 27.5

TO < 15

Current release value (A)

P804HR-E1, P1104HR-E1

15.0

20.0 - (To - 15) × 0.4

20.0

Cooling

Outside temperature

TO (degree °C)

44

≤ TO

39

≤ TO < 44

10

≤ TO < 39

Current release value (A)

P804HR-E1, P1104HR-E1

15.0

17.7

20.0

No cooling operation available for TO < 10 °C.

Heating, Hot water supply

(A) CT

20.0

15.0

Cooling

(A) CT

20.0

17.7

15.0

15 27.5 TO

10 39 44 TO



Item

8-4.



4) Current releases shift control

During a cooling operation, this control prevents the electronic parts, such as a compressor drive element, and compressor from failing.

• The current release control value (I) is selected from the following table according to the TO sensor value.

Current release control value (I)

Temperature range

50 °C

≤ TO

45 °C

≤ TO < 50 °C

39 °C

≤ TO < 45 °C

TO < 39 °C

TO error

P804HR-E1, P1104HR-E1

14.1

14.1

14.1

14.1

14.1

5) Outdoor fan control

The outdoor side control part controls the number of fan motor rotations by receiving an operation instruction from the indoor side (Hydro unit) control part.

For sensing the true outside temperature, fan is operated without compressor operation.

* Although the fan motor is a DC motor, which has non-step variable numbers of rotations, it is limited to some steps for convenience of control.

The number of fan tap rotation allocation [rpm]

P804HR-E1,

P1104HR-E1

Upper

Lower

W1

200

0

W2

240

0

W3

240

200

W4

260

280

W5

320

360

W6

380

400

W7

480

500

W8

500

520

P804HR-E1,

P1104HR-E1

Upper

Lower

W9

530

550

WA

610

630

WB

640

660

WC

660

700

WD

720

740

WE

780

820

WF

890

910

5-1) Cooling fan control

• The TL sensor, TO sensor and operation frequency control the outdoor fan. The control is performed by 1 tap of the DC fan control (14 taps).

• For 60 seconds after the start, the maximum fan tap for each zone that is shown in the following table is fixed. After that, the fan is controlled according to the TG. (TG: temperature converted from PD)

TG [°C]

58

WE tap

55

38

35

+ 1 tap/20 secs

(Up to the maximum number of rotation for each zone)

Number of rotation hold

- 1 tap/20 secs

(Up to the minimum number of rotation for each zone)

HWS-P804HR-E1, P1104HR-E1


38 °C

≤ TO

29 °C

≤ TO < 38 °C

15 °C

≤ TO < 29 °C

5 °C

≤ TO < 15 °C

0 °C

≤ TO < 5 °C

-4 °C

≤ TO < 0 °C

TO < -4 °C

TO error

Less than 20 Hz

20 Hz or more to less than 45 Hz

45 Hz or more

Minimum Maximum Minimum Maximum Minimum Maximum

W6 WC W8 WC WA WD

W5

W4

W3

W2

WB

W8

W6

W4

W7

W6

W5

W4

WB

WA

W8

W6

W9

W8

W7

W5

WC

WC

WA

W8

W2

W1

W1

W3

W2

WC

W3

W1

W1

W5

W4

WC

W4

W2

W2

W6

W6

WD

67


Item

8-4.



5-2) Hot water supply and heating fan control

1) The TE sensor, TO sensor and operation frequency control the outdoor fan.

(The minimum W1 to the maximum are controlled according to the table below.)

2) For 3 minutes after the start, the maximum fan tap for each zone that is shown in the following table is fixed. After that, the fan is controlled according to the TE sensor temperature.

3) If TE

≥ 24 °C continues for 5 minutes, the operation stops. No error code is displayed for this; the status is the same as the usual thermostat off. The operation restarts after 150 seconds. This intermittent running is not abnormal.

NOTE

If the heat-pump was thermo-off, the out-door fan motor (up/down) continue to run 10 mins with W3 rotation.

When the water pump of hydro unit turns from off to on, the fan motor will operate for sensing true outside air temperature.

TE [°C]

-2 tap/20 secs (to W1)

Stop time count

24


21


18

Number of revolutions hold

15

+ 1 tap/20 secs

(Up to the maximum tap for each zone)


30 °C

≤ TO

25 °C

≤ TO < 30 °C

20 °C

≤ TO < 25 °C

10 °C

≤ TO < 20 °C

5 °C

≤ TO < 10 °C

-3 °C

≤ TO < 5 °C

-10 °C

≤ TO < -3 °C

TO < -10 °C

TO abnormal

Less than 20 Hz

Maximum

W4

W5

W6

W7

W9

WA

WB

WD

WD

20 Hz or more to less than 45 Hz

Maximum

W4

W5

W7

W8

WA

WA

WB

WD

WD

45 Hz or more

Maximum

W6

W7

W8

W9

WA

WB

WB

WD

WD



Item

8-4.



6) Defrosting control

6-1) Defrost operation

This control defrosts the outdoor heat exchanger. The temperature sensor (TE sensor) of the outdoor heat exchanger determines frost formation, and then defrosting is performed in the 4-way valve reverse defrosting method.

1) During a heating operation, defrosting is performed when the TE sensor meets any of the conditions in A through D zones.

2) During defrosting, when TE sensor maintains 12 °C or higher for 3 seconds or 7 °C

≤ TE < 12 °C for a minute, the defrosting ends. Also, when defrosting continues for 10 minutes even if the TE sensor temperature is below 7 °C, the defrosting ends.

3) After the defrosting, stop the compressor for approx. 40 seconds before starting a heating operation.

4) Switching the jumper "J805" and "J806" of the outdoor control board can change the time of d above mentioned.

(Factory default: 150 minutes)

Heating operation starts

TE

[

°C

]

0 10 15

-2

-5

39 45 55 [d]

[min]

A zone

-10

D zone

B zone

-23

* 1

C zone

* 1 In 10 to 15 minutes after the heating operation starts, the lowest value of

TE is recorded as TEO, and the lowest temperature of To as ToO.

A Zone

B Zone

C Zone

D Zone

To Normal

Maintain " (TEO - TE) - (ToO - To)

≥ 3 °C" for 20 sec

Maintain " (TEO - TE) - (ToO - To)

≥ 2 °C" for 20 sec

Maintain " TE

≤ -23 °C" for 20 sec

Accumulate compressor operation status of TE < -2 °C for 150 min



Item

8-4.


Jumper switching


O: Short circuit ×: Open

J805

O

O

×

×

J806

O

×

O

×

[d]

150 min (Factory default)

90 min

60 min

30 min

6-2) Advance defrost operation

When compressor temperature is low, defrosting preliminary operation will be carried out to carry defrosting smoothly in effect.

1) Start condition of advance defrosting

•TD < 50 ºC and A, B, C or D zone detected.

2) Conditions for changing over from defrosting preliminary operation to defrosting.

• When TD

≥ 50 °C is detected during defrosting preliminary operation.

• When thermostat is turned off during defrosting preliminary operation.

• When defrosting preliminary operation is carried out more than 10 minutes.

3) Control details

• Target SH during defrosting preliminary operation will be 6 to 10 k. (refer to 8-4-1 (See page 65))

• PMV control interval will be shorter than normal.

• Operation frequency will be fixed.

*1

Advance defrosting

Defrosting operation

Compressor

40.1 Hz

OFF

Outdoor fan

ON

OFF

4-way valve

Outdoor

PMV

On

OFF

500 pulse

430 pulse

0 pulse

0s

Dotted line shows a operating image.

30s 40s

*1. When TD

≥ 50 °C, Advance defrosting will be skipped.

0s 20s 30s 40s



Item

8-4.



7) Winding heating control

1) This control energizes the inactive compressor instead of the case heater to warm the compressor. The purpose is to prevent the refrigerant from staying inside the compressor.

2) After the unit is installed, failure to perform energization for the given time period may cause the compressor to fail.

Also, when starting an operation long after the power left off, first energize the compressor before starting the operation in the same way as a trial run.

3) Energization is determined by the TD sensor and TO sensor. If the TO sensor fails, the TE sensor automatically takes over the operation. Determine if the TO sensor has failed check the LED’s on the outdoor unit PCB.

4) If TD is 30 °C or higher, the energization stops.

TO

18 °C

*Energization

condition

TD 30 °C

15 °C

10 °C

8 °C

(Usual)

Not energized

Intermittently energized

10 mins: ON / 5 mins: OFF

Output "equal to 40W"

Continuously energized

Output "equal to 40W"

TE

20 °C

*Energization

condition

TD 30 °C

18 °C

12 °C

10 °C

(when TO sensor fails)

Not energized

Intermittently energized

10 mins: ON / 5 mins: OFF

Output "equals to 40W"

Continuously energized

Output "equals to 40W"

Notes

During winding energization, energizing noise may be heard, but this is not abnormal.

8) Short circuit operation prevention control

1) In 11 minutes after the operation start, the compressor may not stop for protection. This status is not abnormal. (The operation duration time of the compressor varies depending on a operation status.)

2) If the operation stops with the remote controller, the operation does not continue.

9) Over current protection control

1) A detection of abnormal current with the over current protection control stops the compressor.

2) Set the abnormality detection counter to 1, and restarts the compressor after 150 seconds.

3) When the stop by over current protection control counts 8 times, error code is displayed and the compressor does not restart.

(Remote controller error code display: HO1)



Item

8-4.



10) High pressure release control

1) To prevent excessive high pressure rise, operating frequency is controlled by the PD sensor.

2) If the PD sensor detects an abnormal stop zone pressure, the compressor stops and the abnormality detection counter increments.

3) When the compressor stops in 2), the heat-pump operation restarts when the pressure decrease to zone "e" (normal operation) after 150 seconds passed.

4) When the compressor stops in 2), the abnormality detection counter is cleared when the operation continues for 10 minutes. If the counter counts 10 times, error code is displayed on the remote-controller and the compressor does not restart.

5) For details about an check code displayed, see the check code list. (See page 77)

4.10

Normal operation

4.00

3.90

3.80

3.70

3.60

3.50

3.40

3.30

0 10 d e a b,c

20 30 40 50 60

Compressor frequency [Hz]

70 80 90

11) Compressor case thermostat

The compressor case thermostat functions to protect the compressor when the blow-out temperature from the compressor is too high.

• The compressor case thermostat on the upper part of compressor stops the compressor.

• The compressor will restart three minutes after stopping.

• If the compressor case thermostat functions again after restarting (functions at 125 °C), compressor stops and the

“H04” error code is indicated.

12) Bottom plate heater control

Control ON and OFF of the bottom plate heater using the outdoor temperature sensor (TO).

TO

+2

Bottom plate heater is turned off

0

Bottom plate heater is turned on



Item

8-4.



13) 2-way valve control

To control the bypass 2-way valve, reducing the minimum capacity and reducing the pressure increase purpose.

Bypass circuit is connect the discharge pipe and the suction pipe of the compressor.

1)Bypass operation start condition

The operation start in the following cases. (On cases of 2-way valve.)

<Heating or hot water supply> Any of the following cases

Pd is the case of X zone.

•(To

≥ B zone) and (compressor operation Hz is low).

Pd is the case of Y zone.

(To

≥ B zone) and (compressor operation Hz is low) and (Operation of the previous time of 12 minutes or less)

<Defrosting> Any of the following cases

•TWI < 36 °C

Tg(Pd)

•TC+TWO<9 °C

<Cooling> Any of the following cases

•(To

≤ B zone) and (compressor operation Hz is low)

•(To

≤ B zone) and (When the hydro unit is operating release control.)

60.0(3.73)

X zone

58.5(3.60)

The operation stop in the following cases. (Off cases of 2-way valve.)

When the 2-way valve turned on once, it does not turn off for 5 minutes.

<Heating or hot water supply> Any of the following cases

•(Pd

≤ Y zone) and (When the compressor rotational speed is increasing.)

•(Pd

≤ Y zone) and (To ≤ C zone)

•When the compressor is stopped.

<Defrosting>

•When the compressor is stopped.

<Cooling> Any of the following cases

•(Compressor rotational speed is increasing.) and (The hydro unit is not operating release control.)

•When the compressor rotational speed is increasing.

To

23

21

5

3

Y zone

A zone

B zone

C zone

14) Start up from hibernation

This control operates at startup, in order to warm up the compressor by the heat from the water.

System is operated at a defrost cycle when the start condition is satisfied.

System is switched to the normal heating operation when the end condition is satisfied.

14-1)Start conditions

This control is operated when starting the compressor in a state that all of the following conditions is satisfy.

•Compressor off time is 2 hours or more (Also start up at the first time after turn on the power.)

•TD

≤ 40 °C and TWI ≥ 25 °C and TO ≤ 3 °C

14-2)End conditions

When one of the following conditions is satisfy, operation is switched to the normal heating.

•10 minutes has passed since operation started.

•TD

≥ TWI+10 °C

•TG

≥ TWI TG : Condensing temperature calculated from the Pd

•TWI < 25 °C



9

Method of defect diagnosis

In order to diagnose the defective part of the heat pump system, first understand the symptom of the defect.

(1) Check the operation status. (It does not move, or it moves but stops, etc.)

(2) Flashing display on the display part of the hydro unit.

(3) Check the “check code” by the remote controller.

Please refer to the following procedure of defect diagnosis for the identification.

No.

Procedure of defect diagnosis

9-1

9-2

9-3

Remark

Matters to be confirmed first

9-1-1. Check the power supply voltage

9-1-2. Check for any miswiring of the connection cables between the hydro unit and the outdoor unit

9-1-3. About the installation of the temperature sensor

Check the power supply for the heat pump hot water heater, the crossover between the hydro unit and the outdoor unit, and the installation of temperature sensors.

Non-defective operation (program operation) Non-defective program operations for the protection of the heat pump unit.

Outline of the determination diagram

9-3-1. Procedure of defect diagnosis

9-3-2. How to determine from the check code on the remote controller

9-3-3. How to cancel a check code on the remote controller

9-3-4. How to diagnose by error code

With reference to the "check code", roughly identify the defect from the defect diagnosis for the heat pump hot water heater and determine the defective part from individual symptoms.

9-4

9-5

9-6

Diagnosis flow chart for each error code

Operation check by PC board

Brief method for checking the key components

9-4-1. Hydro unit failure detection

9-4-2. Outdoor unit failure detection

9-4-3. Temperature sensor, temperatureresistance characteristic table

9-5-1. Operation check mode

9-6-1. Hydro unit

9-6-2. Outdoor unit

The operation check mode allows to determine good or not by checking the operation of the 4-way valve, 2-way valve and pulse motor valve.

How to determine the presence of any defect particularly in functional parts.



9-1. Matters to be confirmed first

9-1-1. Check the power supply voltage

Check that the power supply voltage is AC220-230 V± 10% (signal phase). If the power supply voltage is not in this range, it may not operate normally.

9-1-2. Check for any miswiring of the connection cables between the hydro unit and the outdoor unit

The hydro unit and the outdoor unit are connected with three connection cables. Make sure the interconnecting connections between the hydro unit and the outdoor unit terminal blocks are connected to the correct terminal numbers. If not connected correctly, the heat pump system does not operate. However, a miswiring would not cause damage to the equipment.

9-1-3. About the installation of the temperature sensor

If each sensor is removed due to the replacement of the water heat exchange or inverter board, or the replacement of the refrigeration cycle parts, make sure to put the sensor back to the position where it was before.

• Each sensor position has a marking. Make sure to put it back to the exact position.

• Make sure to install it with a sensor holder so that the temperature sensing part of the sensor and the straight part of the copper piping are attached with each other tightly.

• If the installation of the sensor is incomplete or the installed position is wrong, it will not perform a normal control operation and may cause a defect such as a malfunction of the equipment or an occurrence of an abnormal sound, etc.

9-2. Non-defective operation (program operation) … No fault code display appears.

In order to control the heat pump unit, there are the following operations as the built-in program operations in the microcomputer. If a claim occurs about the operation, please confirm whether it falls under any of the contents in the following table.

If it does, please understand that the symptom is not a defect of the equipment, and it is an operation necessary for the control and maintenance of the heat pump unit.

Table 9-2-1 Non-defective operation

No.

1

2

3

4

5

Operation of the heat pump system Explanation

The compressor sometimes does not operate even within the range of compressor “ON”.

The compressor does not operate during the operation of the compressor reboot timer (3 min). Even after the power activation, the compressor reboot timer continues to be active.

During the hot water supply or heating operation, without reaching the set temperature, the compressor operation frequency stays at a frequency of less than the maximum Hz or lowers down.

It may be caused by the high temperature release control

(release protection control by the temperature of the water heat exchanger) or the current release control, or the high pressure release control.

The “Stop” operation on the remote controller will not stop the circulating pump. (The same for hot water supply, heating and cooling)

In order to deal with the temperature increase in the heat exchanger after stopping, the operation continues for 1 min after the compressor is stopped.

“ON” on the remote controller will not operate the compressor.

(It will not operate even after the reboot delay timer elapsed)

When the outdoor temperature (TO sensor detection temperature) is -25 °C or lower, the heat pump will not operate in order to protect the compressor, and the heater will operate instead.

When the power is turned on, it starts operation without operating the remote controller.

• The auto restart operation may be working.

• The antifreeze operation may be working.

• If the TWI, TWO or THO sensor detects a temperature below 4 °C, the operation changes from circulating pump

--->> circulating pump + heater.)

75


9-3. Outline of the determination diagram

The first determination of whether a defective part is in the hydro unit or the outdoor unit can be performed by the following method.

9-3-1. Procedure of defect diagnosis

In the case of a defect, please apply the following procedure in order to find the defective part.

Defect

Confirm the check code on the remote controller display

Check code

A01-A12

No

Yes

Defect in Hydro unit

Check code

L07-L16

Yes

Abnormality in the communication or setting system

No

Check code

FXX

Yes

Abnormality in the water heat exchange or outdoor unit sensor system

No

Abnormality in the outdoor unit or hot-water tank unit

9-3-2. How to determine from the check code on the remote controller

If the defect is limited by the check code displayed on the remote controller, please repair the defect based on the table on the next page.

The check codes are separated into two groups: software and hardware errors.

Since a hardware error cannot be cancelled without a part replacement etc., please perform a repair.

If its abnormality is determined, the abnormality is noticed by indicating the check code on the remote controller check code display part while sounding off a buzzer.

Check code display part

9-3-3. How to cancel a check code on the remote controller

(1) Press ZONE1,2 or HOT WATER button (on the operation side) to clear the check code.

(2) Press

CL

to stop a buzzer for an abnormality only.

Although the above procedure cancels the check code, the hardware error will be displayed again until the hardware repair is completed.

76


9-3-4. How to diagnose by error code

Defect mode detected by the water heat exchange

O ... Possible

× .... Not possible

Check code

A01

Diagnostic functional operation

Operational cause

Backup operation

Automatic reset

Pump or flowing quantity error

1) Detected by TC sensor

TC

≥63 °C is detected in the heating or hot water supply heat pump operation

(except for defrosting).

2) Detected by flow switch abnormality

When no signal of the flow switch is showing 2 min after the built-in pump operation started.

3) Detection of chattering abnormality in the flow switch input

Chattering detection: Detects input changes (OFF

⇔ON) 4 times within

10 seconds during operation.

Heating

×

Hot water

O

×

Determination and action

1. Almost no or little water flow.

• Not enough vent air

• Dirt clogging in the water piping system.

• The water piping is too long.

• Installation of buffer tank and secondary pump

A02

4) Disconnection of the flow switch connector

When the stopped built-in pump starts its operation, the flow switch status is detecting "water flow".

Temperature increase error (heating)

When one of the TWI, TWO and THO sensors exceeds 70 °C.

Heating

×

Hot water

O

O

1. Disconnection of the flow switch connector.

2. Defect of the flow switch.

1. Check the water inlet, water outlet and heater outlet (TWI, TWO, THO) sensors.

2. Defect of the backup heater (defect automatic reset thermostat).

Number of abnormalities for confirmation

Detailed item

4

2

4

2

1

84

84

84

84

85

A03

A04

A05

Temperature increase error (hot water supply)

When the TTW sensor exceeds 85 °C.

Heating

O

Hot water

×

Antifreeze operation (1)

1)TWO>20 °C condition:

2×TC+TWO

≤-12 °C is detected.

2)TWO

≤20 °C condition:

TC+TWO

≤4 °C is detected.

3)TWI

≤10 °C is detected during defrosting.

O

Piping antifreeze operation

Activating the heater under the condition of TWO<4orTWI<4orTHO<4 does not achieve TWO,TWI,THO

≥5 °C after

30 min elapsed.

O

O

×

O

1. Check the hot water cylinder sensor

(TTW).

2. Check the hot water cylinder thermal cut-out.


• Dirt clogging in the water piping system.

• The water piping is too long, or too short.

2. Check the heater power circuit.

• Power supply voltage, breaker, power supply connection

3. Set the presence of the backup heater.

4. Check the water inlet, water outlet and heat exchange (TWI, TWO, TC) sensors and Flow Switch.

1. Check the heater power circuit.


2. Check the water inlet, water outlet and heater outlet sensors (TWI,

TWO, THO).

3. Disconnection of the backup heater.

1

Heating8

Hot water8

Cooling4

1

86

87

88

77


Check code

A07

A08

A09

A10




Automatic reset

Combination error

Model name of the Hydro unit is different.

Low pressure sensor operation error

The low pressure sensor detected 0.2

MPa or less.

O

×


1. Check DP_SW13_4 is set to "ON".

Overheat protection operation

When the thermostat of the backup heater activates during the operation of the heat pump or backup heater.

When the thermostat operation is activated while it has been stopped.

Antifreeze operation (2)

When TC-TWO<-15K detected in cooling mode.

O

Heating

×

Hot water

O

O

×

×

×



3. On-load cooling or prolonged defrosting (a lot of frost formation) under the above conditions.

4. Defect in the low pressure sensor.

5. Check the refrigeration cycle (gas leak)

1. No water (heating without water) or no water flow.


3. Defect of the backup heater (poor automatic reset thermostat).

1. Almost few water flow.


3. Low refrigerant.


Detailed item

1

8

2

1

10

—

89

90

91

A11

Operation of the release protection

When the TWO release counts to 10.

Heating

Cooling

×

Hot water

O

×

1. Almost no water flow.


3. Check the water outlet temperature sensor (TWO).

10

92

A12

Heating, hot water heater

The antifreeze control is detected under the condition of TWI<15 °C while

TWI

≥15 °C, TTW≥20 °C is not detected after the heater backup.

O O

1. Activated by a large load of heating or hot water supply.

2. Check the heater power circuit

(backup or hot water cylinder heater).


1

93

E03

E04

F03

F10

F11

Regular communication error between hydro unit and remote controller

When there is no regular communication from the remote controller for 3 min, or when no remote controller is equipped.

Regular communication error between hydro unit and outdoor unit

The serial signal cannot be received from outdoor.

TC sensor error

Open or short circuit in the heat exchange temperature sensor.

TWI sensor error

Open or short circuit in the water inlet temperature sensor.

×

O

O

O

TWO sensor error

Open or short circuit in the water outlet temperature sensor.

Heating

×

Hot water

O

O

O

O

O

O

1. Check remote controller connection.

2. Defect in the remote controller.

1. Check the serial circuit.

• Miswiring of the crossover between the water heat exchanger and the outdoor unit

1. Check the resistance value and connection of the heat exchange temperature sensor (TC).

1. Check the resistance value and connection of the water inlet temperature sensor (TWI).

1. Check the resistance value and connection of the water outlet temperature sensor (TWO).

1

1

1

1

1

—

94

94

96

96

78


Check code

F14




Automatic reset

TTW sensor error

Open or short circuit in the hot water cylinder sensor.

Heating

×

Hot water

O

O


1. Check the resistance value and connection of the hot water cylinder sensor (TTW).


Detailed item

1

97

F17

TFI sensor error

Open or short circuit in the floor temperature sensor.

(Only when zone 2 is used)

Heating

×

Hot water

O

O

1. Check the resistance value and connection of the floor-inlet temperature sensor (TFI).

1

97

F18

F19

F20

F23

THO sensor error

Open or short circuit in the heater outlet temperature sensor.

Heating

×

Hot water

O

Detection of THO disconnection error

When TWO–THO>15K is detected and

30 sec elapsed.

Heating

×

Hot water

O

TFI sensor error

When TWO–TFI>40K is detected and

TFI<TWI–5K is detected 60 sec.

Heating

×

Hot water

O

Low pressure sensor error

When PS<0.07 MPa is detected for 90 sec or more. (cooling, defrosting)

When PS<0.07 MPa is detected for 10 min or more. (hot water supply, heating)

O

O

×

×

O

1. Check the resistance value and connection of the heater outlet temperature sensor (THO).

1. Check for any disconnection of the heater outlet temperature sensor

(THO).


1. Check the connection of the floorinlet temperature sensor (TFI).

1. Check the connection (body or connection wiring) of the low pressure sensor.

2. Check the resistance value of the low pressure sensor.

3. Check the refrigeration cycle (gas leak)

1

1

1

1

97

98

99

100

F29

F30

L02

L07

L09

EEROM error

Inconsistency is detected once without verify ACK after writing to EEPROM.

Extended IC error

When the extended IC is abnormal.


Model name of the outdoor unit is different.

Communication error

Individual hydro units have a group line.

Communication error

The capability code for the hydro unit has not been set.

×

×

×

×

×

×

×

×

×

×

1. Replace the water heat exchange control board.


1. Check the model name of the outdoor unit.


1. Check the setting of the FC01 capability specifications.

HWS-P804xx-E1 = 0012

HWS-P1104xx-E1 = 0015

1

1

1

1

1

100

100

100

100

101

L16

Setting error

When ZONE1 has not been set, while

ZONE2 has been set.

× ×

1. Check the body DP-SW12_2,3. 1

101



Defect mode detected by the outdoor unit

O ... Possible

× .... Not possible

Check code

F04

F06




Automatic reset

TD sensor error

Open or short circuit in the discharge temperature sensor.

TE sensor error


O

O

×

×


1. Check the resistance value and connection of the discharge sensor

(TD).

1. Check the resistance value and connection of the heat exchange temperature sensor (TE).


Detailed item

4

4

95

110

95

110

F07

F08

F12

F13

F15

TL sensor error


TO sensor error

Open or short circuit in the outdoor temperature sensor.

TS sensor error

Open or short circuit in the suction temperature sensor.

TH sensor error

Open or short circuit in the heat-sink temperature sensor.

TE, TS sensors error

TE, TS sensor connections are opposite.

O

O

O

O

O

×

×

×

×

×

1. Check the resistance value and connection of the heat exchange temperature sensor (TL).

1. Check the resistance value and connection of the outdoor temperature sensor (TO).

1. Check the resistance value and connection of the suction temperature sensor (TS).

1. Check the resistance value and connection of the heat-sink temperature sensor (TH).

1. Check for any wrong installation of the heat exchange temperature sensor (TE) and the suction temperature sensor (TS).

4

1

4

8

4

95

110

96

111

111

111

111

F24

PD sensor error

Open or short circuit in the high pressure sensor.

F31

EEPROM error

H01

Compressor breakdown

1 When the operation frequency lowers due to the current release 40 sec or later after the compressor activation and it stops by underrunning the minimum frequency.

2 When the operation frequency lowers due to the current limit control and it stops by underrunning the minimum frequency.

3 When an excess current is detected

0.8 sec or later after the compressor activation.

H02

Compressor lock

1 When the input current is more than zero 20 sec or later after the compressor activation and the activation has not been completed.

Defect in the current detection circuit

H03

O

O

O

O

O

×

×

×

×

×

1. Check the value of PD sensor by the remote controller.

1. Check the power supply voltage

(AC220-230 V±10%).

2. Over-loaded condition of the refrigeration cycle.

3. Check that the service valve is fully open.

1. Defect of compressor (lock)

– Replace the compressor.

2. Defect of compressor wiring (open phase).

1. Replace the outdoor inverter control board.

4

1

8

8

8

112

112

102

103

—

80


Check code

H04




Automatic reset

Operation of case thermostat

When the case thermostat exceeds

125 °C.

O

×


1. Check the refrigeration cycle (gas leak).

2. Check the case thermostat and connector.


4. Defect of the pulse motor valve.

5. Check for kinked piping.


Detailed item

10 103

L10

L15

L29

P03

Unset service PC board jumper

Jumpers J800-J803 have not been cut.


Model name of the Hydro unit is different.

The communication between the outdoor PC board MUCs error

No communication signal between IPDU and CDB.

The outlet temperature error

When the discharge temperature sensor

(TD) exceeds 111 °C.

O

×

O

O

×

×

×

×

1. Cut J800-J803.

1. Check the model name of the Hydro unit.

2. Check DP_SW13_4 is set to "ON".

1. Replace the outdoor control board.



3. Check the resistance value of the discharge temperature sensor (TD).

1

1

1

4

104

104

104

104

P05

The power supply voltage error

When the power supply voltage is extremely high or low.

Overheating of heat-sink error

When the heat-sink exceeds 105 °C.

O

× 1. Check the power supply voltage.

(AC220-230 V±10%).

8 105

P07 O

×

1. Check the thread fastening and heat-sink grease between the outdoor control board and the heatsink.

2. Check the heat-sink fan duct.

3. Check the resistance value of the heat-sink temperature sensor (TH).

4 105

P15

P19

Detection of gas leak

When the discharge temperature sensor

(TD) exceeds 106 °C for consecutive 10 min.

When the suction temperature sensor

(TS) exceeds 60 °C for cooling or 40 °C for heating for 10 consecutive min.

When TG ≤ TC -10 K is detected and

TG ≤ TWI-15 K is detected 10min. (hot water supply, heating)

When TG ≤ TE -12 K is detected for

10min. (cooling)

The 4-way valve inversion error

When the heat exchange temperature sensor (TE) exceeds 30 °C or the suction temperature sensor (TS) exceeds 50 °C during the heat pump operation.

O

O

×

×




4. Check for kinked piping.

5. Check the resistance value of the discharge temperature sensor (TD) and the suction temperature sensor

(TS).

6. Check the PD sensor by remote controller.

1. Check the operation of the 4-way valve unit or the coil characteristics.


3. Check the resistance value of the heat exchange temperature sensor

(TE) and the suction temperature sensor (TS).

8

4

106

107

81


Check code

P20




Automatic reset

High pressure protection operation

When an abnormal stop occurs due to the high pressure release control.

When the high pressure sensor (PD) detects 4.05 MPa.

O

×




3. Check the outdoor fan system

(including clogging).

4. Over-filling of refrigerant.

5. Check the value of the high pressure sensor (PD).

6. The water piping is too short.

Install a buffer tank, or set the setting temperature lower.


Detailed item

10 108

P22

Outdoor fan system error

When a DC fan rotor position detection

NG, element short circuit, loss of synchronization, or abnormal motor current occurs.

P26

Short circuit of the compressor driver element error

When an abnormal short circuit of IGBT is detected.

O

O

P29

Compressor rotor position error

The rotor position in the compressor cannot be detected.

O

×

×

×

1. Check the lock status of the motor fan.

2. Check the connection of the fan motor cable connector.

3. Check the power supply voltage.

(AC220~230 V±10%)

1. P26 abnormality occurs when operating with the compressor wiring disconnected … Check the control board.

2. No abnormality occurs when operating with the compressor wiring disconnected … Compressor rare short.

1. Even if the connection lead wire of the compressor is disconnected, it stops due to an abnormality in the position detection … Replace the inverter control board.

2. Check the wire wound resistor of the compressor. Short circuit

… Replace the compressor.

8

8

8

109

109

109



Defect mode detected by the remote controller

Check code

E09



Status of airconditioning

Condition


Not displaying at all

(cannot operate by the remote controller)

E01

E02

No communication between hydro unit an remote controller

• The remote controller wiring is not connected correctly.

• The hydro unit has not been turned on.

Defect in the signal transmission to the hydro unit.

(Detected on the remote controller side)

Stop –

No communication between hydro unit and remote controller

• Disconnection of the crossover between the remote controller and the base unit of the indoor unit

(detected on the remote controller side).

Stop

(Automatic reset)

Displayed when the abnormality is detected.

Stop

(Automatic reset)


Defect in the remote controller power supply

1. Check the remote controller wiring.

2. Check the remote controller.

3. Check the hydro unit power supply wiring.

4. Check the water heat exchange control board.

Defect in the reception of the remote controller

1. Check the remote controller crossover.

2. Check the remote controller.

3. Check the hydro power supply wiring.

4. Check the water heat exchanger board.

Defect in the transmission of the remote controller

1. Check the transmitter circuit inside the remote controller.

… Replace the remote controller.

Several remote controller base units

(Detected on the remote controller side)

Stop

(The handset continues)


1.2 Check several base units with the remote controller

… The base unit is only one, and others are handsets.



9-4. Diagnosis flow chart for each error code

9-4-1. Hydro unit failure detection

[A01] Error Pump flow determination

[A01] occurs

Operation restarts

Pump rotates

Yes

Perform air vent

Yes

Excess air noise comes from inside the pump

No

No (No pump sound)

Flow switch is connected to board

Yes

No

Built-in pump is connected to board

Yes

No

Connect flow switch connector to board

Connect pump connector to board

Chattering noise comes from flow switch

No

No

Flow switch is normal

Yes

Pump stops 2-3 minutes after its rotation started

No

Yes

TC sensor characteristic is correct

Flow shortage

(Identify causes, and resolve)

No

Yes

Dirt clogging inside water circuit

(strainer)

12 M or longer water pipe to a branch, or 5 or less branches

No


Yes

Water heat exchanger control board is defective, replace it

No

84


Replace flow switch

Replace pump

Replace TC sensor

Remove waste

Fit buffer tank and the second pump

Attach or replace flow switch


[A02] Error Temperature rise and error short circuit

Start

(TWI,TWO,THO

≥ 70 °C)

TWI, TWO, and THO sensor characteristics are correct

Yes

No

No


Yes

Water outlet temperature is 70 °C or higher

Yes

No

Hot water from boiler or other circuits does not come in

No

Yes

Yes

Backup heater is energized

(Measure heater current)

No

Replace water heat exchange control board

Replace TWI, TWO, and THO sensors

Replace flow switch

Correct water circuit

(To prevent hot water of other circuits from entering)

Failure of backup heater

(Too large heater input, thermostat short circuit)

Replace heater unit

• If Boiler setting is ON (DPSW13-2 is ON) and FC62 is “1”, the A02 error is not detected.



[A03] Error Temperature rise and error short circuit

Start

(TTW

≥ 85 °C is detected)

TTW sensor characteristic is correct

Yes

No

Hot water cylinder heater is energized

Yes

No

Replace TTW sensor

Mg-sw (RY05) for heater operates

Yes

No

At normal temperature, tank thermostat is energized

No

Yes

Operating noise at normal time

Hot water cylinder thermostat operates

No

Yes

Operation temperature 82 °C


Replace Mg-sw

Replace hot water cylinder thermostat



[A04] Error Freeze prevention control

When the outside temperature and inlet water temperature is low (approx. 20 °C or lower) and the room load is large (operation frequency

≥ rating), the freeze prevention control may be activated.

Start

Operation restart

Perform air vent

Yes

Excess air inside pump

No

Chattering from flow switch

No

Yes

Secure water circulation amount

Circulation flow shortage

Dirt clogging inside water circuit

(inside strainer, etc)


Replace flow switch


Short circuit piping

Yes

No

Water heat exchanger board DP_SW11-1 is ON

No

Yes

Backup heater terminal has

AC 220-230 V

(± 10 %)

No

Total water amount in the system is too little, or water piping is too short

Yes

Power is connect to backup heater terminal

Yes

No

Backup heater element is conductive

Yes

No

(Backup heater NG)

TC, TWO, TWI sensor characteristics are correct

Yes


No

(Refer to Characteristic table on page 113)

87



Set DP_SW11-1 to ON

Connect backup heater power cable

Set heater breaker to ON

Check indoor wiring

Replace backup heater unit

Replace TC, TWO, and TWI sensors


[A05] Error Piping freeze prevention control

Restart

TWI 4, TWO 4, or

THO 4 is detected

Circulation pump keeps being energized or 3 minutes passed after the start

Water heat exchange control board

DPSW11-1 is ON

Yes

No

Set water heat board

DPSW11-1 to ON

Backup heater terminal has 220-230 V (± 10 %)

Yes

No

Power is connect to built-in heater terminal

Yes

No

Place power cable for backup heater

Set breaker for backup heater to ON, or Check indoor electronic wiring

Replace backup heater and safety valve


Yes

No

(Backup heater NG)

TWI, TWO, THO sensor characteristics are correct

Yes


No


Replace TWI, TWO, and THO sensors



[A08] Error Low pressure sensor lowering operation failure (Cooling / Defrosting operation)

Start


No

Yes

Excess air noise comes from inside pump

No

Yes Secure water circulation amount


No

Yes


Continued operation at low outside temperature and at 15 °C or lower set temperature

Yes

(Cooling overload operation)

No

Remove sufficiently excess air

Waste stuck inside water circuit


Defrosting takes 15 mins or longer

(Frost remains)

Yes

No

Low pressure sensor is normal

Yes

No


Replace flow switch

Remove waste

Place buffer tank and the second pump

Raise set temperature

Defrost outdoor unit where frost remains

Replace low pressure sensor



[A09] Error Overheat prevention thermostat failure (Hot water supply / Heating operation)

Start

Water cycle contains water

No

Yes


Yes

No

Put water into water circuit

(Recommended: 1 - 2 Bar)

Replace flow switch

At normal temperature, overheat preventive thermostat is normal

Yes

No

Replace heater unit exchanger air vent valve

Replace water heat exchange control board or overheat preventive thermostat failure

*Replace water heat exchange control board or overheat preventive thermostat failure: After the control board is replaced, if the same operation repeats, the overheat preventive thermostat is determined as defective (does not operate at 75 °C).



[A10] Error Freeze prevention control (2) (Cooling only)

Start


No

Yes


No

Yes



No

Yes





Replace flow switch

Remove waste


Sufficient refrigerant

No

Yes

Recharge refrigerant

Note: Determined at TWO-TWI temperature during operation at a pressure of Ps

Operating with no load on water circuit?

No

Yes

Raise the set water temperature.

Add fan coils.

Replace control board.



[A11] Error Release protection operation

Start


No

Yes


No

Yes



No

Yes





TWI sensor is attached to pipe

Yes

No

TWI and TWO sensor characteristics are normal

Yes

No


Replace flow switch

Remove waste


Attach TWI sensor

Replace TWI or TWO sensor



[A12] Error Heating or Hot water supply heater failure

Restart

Operation starts under

10

≤ TWI 20 °C

Freeze prevention control is detected once

Heater backup operation

Heating: Booster heater

Hot water supply: Hot water cylinder heater

After 1 hour since heater operation started, neither TWI

≥ 15 °C nor TTW

≥ 20 °C is met

A12 abnormality detection

Water heat exchanger board DPSW11-1,2 is ON

No

Yes

Backup heater or hot water cylinder terminal has 220-230 V ± 10 %

AC220-230 V±10 %=

(single phase type).

AC380-400 V±10 %=

(3 phase type).

No

Yes

Power is connect to backup heater or hot water cylinder terminal

No

Yes

Set water heat board

DPSW11-1,2 to ON

Place electric wire for backup heater

Place electric wire for hot water cylinder

Set breaker for backup heater to ON

Set breaker for hot water cylinder to ON or check indoor wiring

Replace booster heater unit and safety valve


Yes

No

(Backup heater NG)

Hot water cylinder heater element is conductive

Yes

No

(Hot water cylinder heater NG)

Replace hot water cylinder heater

(Refer to hot water

cylinder guide)

TWI, TTW sensor characteristics are normal

Yes


No


Replace TWI or TTW sensor

93


[E04] Error

Outdoor unit operates

Yes

Check water heat exchanger control board

If defective, replace it

No

Yes

Hydro unit

Internal wiring and connecting wire (1, 2, 3) are correct

Yes

No

CN04 connector and terminal block (1, 2, 3) wiring are normal

No

Yes

When power is on again, D502 (Amber LED) blinks

Yes

No

Check outdoor control board


[F03] Error TC sensor failure

Start

TC sensor connector (CN203) is connected

Yes

No

TC sensor resistance characteristic is normal

Yes

No


Correct wiring and connecting wire

Correct connector and terminal block wiring

Check water heat exchanger board


Correct TC sensor connection

Replace TC sensor



[F04] Error TD sensor failure

Start

TD sensor connector (CN603) is connected

Yes

No

TD sensor resistance characteristic is normal

Yes

No


Correct TD sensor connection

Replace TD sensor

[F06] Error TE sensor failure

Start

TE sensor connector (CN601) is connected

Yes

No

TE sensor resistance characteristic is normal

Yes

No


[F07] Error TL sensor failure

Start

Correct TE sensor connection

Replace TE sensor

TL sensor connector (CN604) is connected

Yes

No

TL sensor resistance characteristic is normal

Yes

No



Correct TL sensor connection

Replace TL sensor

95


[F08] Error TO sensor failure

Start

TO sensor connector (CN602) is connected

Yes

No

TO sensor resistance characteristic is normal

Yes

No



Correct TO sensor connection

Replace TO sensor

[F10] Error TWI sensor failure

Start

TWI sensor connector (CN205) is connected

Yes

No

TWI sensor characteristic is normal

No


Yes


[F11] Error TWO sensor failure

Start

Correct TWI sensor connection

Replace TWI sensor

TWO sensor connector (CN205) is connected

Yes

No

TWO sensor characteristic is normal

No


Yes


Correct TWO sensor connection

Replace TWO sensor

96


[F14] Error TTW sensor failure

Start

TTW sensor connector (CN214) is connected

Yes

No

TTW sensor characteristic is normal

No


Yes


Correct TTW sensor connection

Replace TTW sensor

[F17] Error TFI sensor failure

Start

TFI sensor connector (CN213) is connected

Yes

No

TFI sensor characteristic is normal

No


Yes


[F18] Error THO sensor failure

Start

Correct TFI sensor connection

Replace TFI sensor

THO sensor connector (CN206) is connected

Yes

No

THO sensor characteristic is normal

No


Yes


Correct THO sensor connection

Replace THO sensor

97


[F19] Error THO sensor detach failure

Start

THO sensor is attached to pipe

Yes

No

Attach THO sensor to pipe

THO sensor characteristic is normal

No


Yes

Replace THO sensor


No


Yes


Replace TWO sensor



[F20] Error TFI detach failure

Start

Mixing valve is attached.

No

Yes

Mixing valve connection is correct.

Yes

No

(Refer to wiring diagram of hydro unit on

page 20)

Attach a mixing valve.

Make the mixing valve connection correct.

Mixing valve setting is correct.

Yes

No

Make the mixing valve setting correct.

FC_0C: Mixing valve running time

(30sec to 120sec)

Attach TFI sensor to pipe

TFI sensor is attached to pipe

Yes

No

TFI sensor characteristic is normal

Yes

No


Replace TFI sensor

TWI sensor characteristic is normal

Yes

No


Replace TWI sensor


No


Yes


Replace TWO sensor



[F23] Error Low pressure sensor detach failure

Start

Lo pressure sensor is detached (CN207, 212)

Yes

No

When operation is stopped, lo pressure sensor is normal *1

Yes

No


*1 How to determine: When operation is stopped

Attach low pressure sensor

Replace low pressure sensor

[F29] Error EEPROM failure

A failure is detected in the IC10 non-volatile memory on the water heat exchanger board during a hot water supply unit operation. Replace the service board.

* If the unit does not have EEPROM inserted when the power is turned on, or if EEPROM data read or write is unavailable, automatic address mode repeats. In this case, the intensive control unit displays [97 Abnormal].

(Approx. 3 mins) (Approx. 1 mins)

(Power on) Handy remote "Setting" controller displays disappears

"Setting"

Reboot

(reset)

(Repeat)

[F30] Error Enhanced IC failure

Enhanced IC on water heat exchanger control board is abnormal.

Replace the water heat exchanger control board to a service board.

[L02] Combination Error

The model name of the outdoor unit is not HWS-P804HR-E1 or HWS-P1104HR-E1.

Replace the outdoor unit with the proper model.

[L07] Error

At the time of power on, detecting the above failure automatically activates the automatic address setting mode.

(Check code is not output)

Note that if the above failure is detected in the automatic address setting mode, a check code may be output.

100


[L09] Error

Hydro unit capacity is not set

No

Yes

Set indoor unit capacity data

Setting item code (FC_01)

8 kW = 12

11 kW = 15

Water heat exchange control board (MCC-1511) Check


[L16] Error

In DP_SW12-2, 3 of main unit water heat exchanger, if ZONE1 is not set and ZONE2 is set, [L16] displays abnormality.

Set correctly DP_SW12-2, 3.



9-4-2. Outdoor unit failure detection

Diagnosis procedure for each check code

• One check code may indicate multiple symptoms. In such a case, see the LED indication on the outdoor board to narrow down the check details.

• The handy remote controller displays a check code only when the same failure repeatedly occurs while the LED on the outdoor board indicates an error even if it occurs only once. This may cause indication inconsistency between the remote controller and LED.

Outdoor board LED indication method

Dip switch setting

• Setting 1 only of SW803 to ON indicates the latest failure.

Because the error log is recorded, you can see the detail even after the power is once turned off. (Not including outside air temperature sensor (TO) failure)

• After check work is done or when outside air temperature sensor (TO) failure is detected, set all the SW803 switches to

OFF.

(An abnormality now is indicated.)

Indication switching

• One or more LEDs of D800 through D804 lit yellow indicates that a failure occurred. <Indication 1>

• With the status above, pressing the SW800 button for one second causes the yellow LED to blink. <Indication 2>

• Pressing again SW800 for one second or longer returns to

<Indication 1>.

• The combination of <Indication 1> and <Indication 2> can determine what kind of abnormality.

<Latest abnormality>

SW803 1 only is ON

<Abnormality now>

SW803 All OFF (Initial status)

<Indication 1> <Indication 2>

D800 (yellow)

(Normal) (Abnormality occurs)(Press SW800)

D801 (yellow)

D802 (yellow)

D803 (yellow)

D804 (yellow)

D805 (green)

(Example of outlet temperature sensor failure)

Off Light Blink

Check code

[H01]

Outdoor LED indication


Check and Action procedure

(No specific description indicates outdoor unit parts.)

[Compressor fails]

Power voltage is normal.

AC220-230 V±10 %

Yes

No

Wiring connection is normal.

Compressor lead (Board side, compressor side reactor lead, power lead)

No

Yes

Improve power line

Check and correct wiring connection

Abnormally over loaded

No

Yes

Deal with or remove causes



PC board

P804HR-E1, P1104HR-E1 (MCC-1571)



Check code

[H02]





[Compressor lock]

[H04]

Power voltage is normal.

AC220-230 V±10 %

Yes

No

Improve power line

Wiring connection is normal.

Compressor lead (board side, compressor side) reactor, power lead

Yes

No Check and correct wiring connection

Compressor is normal.

No

Yes

Refrigerant stays inside.

Yes

No

Lock compressor and replace it.

Pulse motor valve operates normally.

Yes

Check outdoor board


No

TE, TS sensor pulse motor valve check

If defective, replace

PC board

P804HR-E1, P1104HR-E1 (MCC-1571)


[Case thermostat operation]

CN609 connector and case thermostat is normal.

Yes

No

If case thermostat is short circuited, cooling and heating can operate.

Yes

No

Correct connector

Replace case thermostat

Check outdoor board


PC board

P804HR-E1,

P1104HR-E1

(MCC-1571)

Correct defective portion

Re-charge refrigerant

No gas leakage.

Enough Refrigerant.

Yes

No

No

Service valve is fully opened.

Yes

Pulse motor valve is normal.

Yes

Check for piping collapse and break.

If defective, repair or replace it.

No

Open fully service valve


Replace defective parts

103


Check code

[L10]





[Model not set] Only when service board is used

Cut jumper line by following the instruction comes with the service board package

[L15] <Indication 1> <Indication 2>

[Combination failure between the hydro unit]

Replace the hydro unit with the proper model

[L29]

[P03]


* Any of the following abnormality may occur.

Seeing the LED on the outdoor board can determine which abnormality occurs.

Communication failure between MCUs, Heat sink temperature sensor (TH) failure, EEPROM failure, Model not specified, Heat sink overheat failure, gas leakage detection, 4-way valve invert failure

[Communication failure between MCUs]



PC board

P804HR-E1,

P1104HR-E1

(MCC-1571)


[Abnormal outlet temperature]

No gas leakage.

Appropriate refrigerant amount.

Yes

No

No


Yes

Yes

Abnormally over loaded

No

CN603 connector is normal.

TD sensor resistance is normal

Yes

No



PC board

P804HR-E1,

P1104HR-E1

(MCC-1571)





Deal with or remove causes

Correct connector

Replace sensor



Check code

[P05]





[Power source failure (voltage defective, open phase)]

[P07]

Power voltage abnormal drops or rise

(AC220-230 V±10 %: single phase)

Yes

No



PC board

P804HR-E1,

P1104HR-E1

(MCC-1571)


[Heat sink overheat failure]


The screws are loose in motor drive element,

Q200/300/400, of outdoor control board and rectifier,

DB01/02/03. (MCC-1571)

Radiation grease was not applied to backside of

Q200, DB01, DB02, or DB03.

No

Yes

Check electric work

Apply radiation grease as needed Tighten screws

(Be sure to place back the insulation sheet between

Q300/400 and the heat sink.)

Is not the ventilation flue of the heat sink blocked?

Is not the fan blocked?

(Short-circuit, etc.)

No

Yes



Remove obstacles,

Deal with short circuit



Check code

[P15]





[Gas leakage detection]

No gas leakage.

Appropriate refrigerant amount.

Yes

No




Yes

No



No


Yes


Yes

Piping collapse

No

Temperature sensor check

Discharge sensor CN603

Suction sensor CN600

OK

NG

Repair or replace pipe

Correct connector

Replace sensor



PC board

P804HR-E1, P1104HR-E1 (MCC-1571)



Check code

[P19]





[4-way valve invert failure]

4-way valve operates normally.

(Check piping temperature at the time of cooling/heating operation)

Yes

No

Temperature sensor check

TE sensor CN601

TS sensor CN600

Hydro TWO sensor

If defective, repair or replace it

4-way valve coil resistance is 1.3 to 1.6 k .

Yes

No

Outdoor control board operation check (See below)

OK

NG

4-way valve check


Replace 4-way coil

Check outdoor board


Outdoor control board operation check direction (Self-hold valve) = P804HR-E1, P1104HR-E1

1) With the dip switch SW804 set as in the table below, pressing SW801 for approx. 1 second can check the operation of switching to cooling cycle or to heating cycle.

• The board are energized for 10 seconds.

• Take more than a minute for the next check because the parts (coil, resistance R700) generate large heat. (This does not apply when no coil is connected.)

2) After the check, set all the SW804 dip switches to OFF.

Switching to cooling cycle Switching to heating cycle

SW804 SW801 CN701

SW804 SW801 CN701

Press Press

180DCV or higher 180DCV or higher

Note: Check with a tester

With an analog tester: If a tester shows 180DCV or higher, the board is good.

With digital tester: Although values shown has some range, if its maximum value is

180DCV or higher, the board is good.



Check code

[P20]





[Hi pressure protection operation]

No



Yes

Reset the power source and perform a trail operation according to the season.

Cooling season

Cooling operation

Heating season

Heating operation

No

Outdoor PD sensor is normal.

(confirmation by remote controller)

Yes

Outdoor fan is free from crack or looseness.

Yes

Outdoor fan operates normally.

No

No

Replace sensor

Check outdoor fan

If defective, replace or tighten it

Check the same item as those for [P22] abnormality

Yes

Something prevents outdoor unit heat exchange

- Clogged heat exchanger

- short circuit

No

Yes

Check for refrigerant overcharged, clogged cycle, pipe break, abnormal overload, etc.

If defective, repair defective portion

Remove the disturbing element

Something prevents heat exchange of hydro unit.

- Clogged filter

- Clogged heat exchanger

- Short circuit

No

Check for refrigerant overcharged, clogged cycle, pipe break, abnormal overload, etc.

If defective, repair defective portion

Yes

Remove the disturbing element



Check code

[P22]





[Blower system failure]

Power voltage is normal

(AC220-230 V±10 %: single phase)

No

Yes

Check wiring

Request power source repair

When not energized, the fan motor can be smoothly rotated by hand.

Fan motor coil resistance is normal.

Between red - white leads 12 -20

Between white - black leads 12 - 20

Between black - red leads 12 - 20

Yes



No

Replace fan motor

PC board

P804HR-E1, P1104HR-E1

(MCC-1571)

[P26]

[P29]

Outdoor fan sole operation check

1) With the dip switch SW804 set as in the table below, pressing SW801 for approx. 1 second can check the outdoor fan sole operation. Perform this check to determine which of upper or lower fan has a problem.

• When SW801 is pressed again for 1 second or when 2 minutes has passed, the fan stops.

2) After the check, set all the SW804 dip switches to OFF.

Outdoor fan sole operation

SW804 SW801

Press


[Compressor drive element shorted out]

The connection between compressor lead and reactor is correct.

(Check with wiring diagram)

Yes

No

A operation without compressor lead does not cause the same problem.

Yes

No

Compressor check

(rare short circuit, etc.)



[Position detection circuit failure]



PC board

P804HR-E1, P1104HR-E1

(MCC-1571)

Correct wiring

Replace outdoor board



Check code

No code





[Discharge abnormality] Compressor's loss of synchronism due to rapid load change, etc.

* Although the outdoor LED indicates abnormality, the compressor restarts and no abnormality is confirmed.

* This may occur due to the open phase of the compressor or wiring detach.

[F04]

[F06]

[F07]


[Discharge temperature sensor (TD) failure]

No

TD sensor connector

(CN603) is connected

Yes

TD sensor resistance characteristic is normal

Yes

Correct TD sensor connection

No

See the characteristic table

on page 94

Replace TD sensor

Replace outdoor control board

PC board

P804HR-E1, P1104HR-E1 (MCC-1571)


[Heat exchanger temperature sensor (TE) failure]

No

TE sensor connector (CN601) is connected

Yes


Yes

Correct TE sensor connection

No


on page 94

Replace TE sensor


PC board

P804HR-E1, P1104HR-E1 (MCC-1571)


[Heat exchanger temperature sensor (TL) failure]

No

TL sensor connector (CN604) is connected

YES

TL sensor resistance characteristic is normal

YES

Correct TL sensor connection

No


on page 94

Replace TL sensor


PC board

P804HR-E1, P1104HR-E1 (MCC-1571)



Check code

[F08]





[Outside air temperature sensor (TO) failure]

TO sensor connector (CN602) is connected

Yes

No

Correct TO sensor connection

TO sensor resistance characteristic is normal

Yes

No


on page 94

Replace TO sensor

Replace outdoor control board PC board

P804HR-E1, P1104HR-E1 (MCC-1571)

[F12]

[F13]


[Suction temperature sensor (TS) failure]

No

TS sensor connector

(CN600) is connected

Yes

No

TS sensor resistance characteristic is normal

Yes

Correct TS sensor connection

Replace TS sensor


PC board

P804HR-E1, P1104HR-E1 (MCC-1571)


[Heat sink temperature sensor (TH) failure]


PC board

P804HR-E1, P1104HR-E1 (MCC-1571)

[F15] <Indication 1> <Indication 2>

[Heat exchanger sensor (TE, TS) wrong wiring]

No

TE and TS sensor is attached to the correct position.

Yes


Yes

TS sensor resistance characteristic is normal

Yes

Correct sensor attaching position

No


on page 94

No


on page 94

Replace TE sensor

Replace TS sensor


PC board

P804HR-E1, P1104HR-E1 (MCC-1571)



Check code

[F24]





[High pressure sensor (PD) failure]

PD sensor connector (CN606) is connected

Yes

No

Correct PD sensor connection

No

PD sensor is normal

Yes

Replace PD sensor

[F31]



[EEPROM failure]



PC board

P804HR-E1, P1104HR-E1 (MCC-1571)



9-4-3. Temperature sensor, temperature-resistance characteristic table

TC, TWI, TWO, TFI, TTW, TE, TS, TO sensors

Typical value

Temperature

(°C)

(Minimum)

Resistance value (k

Ω

)

(Standard) (Maximum)

-10 55.42

55.73

60.04

30

40

50

60

0

10

20

25

70

80

90

100

32.33

19.63

12.23

9.75

7.764

5.013

3.312

2.236

1.540

1.082

0.7740

0.5634

33.80

20.35

12.59

10.00

7.990

5.192

3.451

2.343

1.623

1.146

0.8237

0.6023

35.30

21.09

12.95

10.25

8.218

5.375

3.594

2.454

1.709

1.213

0.8761

0.6434

TD, TL sensors

Typical value

Temperature

(°C)

0

40

50

60

70

10

20

25

30

80

90

100

(Minimum)

Resistance value (k

Ω

)

(Standard) (Maximum)

150.5

92.76

58.61

47.01

37.93

25.12

17.00

11.74

8.269

5.925

4.321

3.205

161.3

99.05

62.36

49.93

40.22

26.55

17.92

12.34

8.668

6.195

4.507

3.336

172.7

105.6

66.26

52.97

42.59

28.03

18.86

12.95

9.074

6.470

4.696

3.468

60

50

40

30

20

10

0

-10 0

TC, TWI, TWO, TFI, TTW, TE, TS, TO sensors

200

10 20 30 40 50

Temperature (°C)

TD, TL sensors

60 70 80 90 100

20


150

15

100

10

50

5

0

0 10 20 30 40 50 60

Temperature (°C)

70 80 90

* Since the TH sensor (outdoor unit heat-sink temperature sensor) is built in the outdoor control board, the resistance value cannot be measured.

100

0


9-5. Operation check by PC board switch

9-5-1. Operation check mode

This mode allows to check the operations of the water 2-way valve, water 3-way valve, mixing valve, and circulating pump. This operation is valid when the hydro unit and the outdoor unit are turned on the power.

Operation check mode

(1) Preparation

1) Turn all of the remote controllers "OFF" for the hot water supply and heating.

2) Turn off the hydro unit and the outdoor unit.

3) Remove the front panel of the hydro unit.

4) Set SW06_2 "ON".

(2) Operation check

1) Turn on the hydro unit and the outdoor unit.

2) Rotate switch DIP SW01 to position "1" and press tactile switch SW07 for 5 sec. or longer.

3) Rotating the rotary SW01 allows to check each operation.

4) Set the DIP SW06_2 "OFF" to finish.

Rotary switch

1 None

2WV_W

2

Check contents

Alive for approx. 2 sec, not alive for 3 sec

Remark

3 3WV_W

Mixing valve

4

5

6

7

8

9

10

11

12

13

14

15

16

Built-in circulation pump

Extended AC pump 1

(Extended AC pump 2)

Water heat exchange backup heater


Backup heater

Check the alarm output.

Check the boiler output.

Check the defrost output.

Check the operation output.

None

Built-in circulation pump continuous operation

Alive for 30 sec in the forward direction

Alive for 30 sec in the reverse direction

Alive / not alive for 20 sec



Repeat heater 1, heater 2, and OFF every 20 sec



Reserved

The built-in circulation pump operates.

The built-in circulation pump and external AC pump operate.

Output for 10 sec / no output for 10 sec




Continuously alive Do not operate the circulation pump alive continuously without any water in hydro unit.



9-6. Brief method for checking the key components

9-6-1. Hydro unit

No.

1

Component name

Water heat exchange temperature

(TC) sensor

Water inlet temperature

(TWI) sensor

Water outlet temperature

(TWO) sensor

Hot water cylinder temperature

(TTW) sensor

Floor inlet temperature

(TFI) sensor

Check procedure

Remove the connector and measure the resistance value with a tester. (Normal temperature)

Temperature

Sensor

Water heat exchange temperature (TC) sensor

Water inlet temperature (TWI) sensor

Water outlet (TWO) sensor

Hot water cylinder temperature (TTW) sensor

Floor inlet temperature (TFI) sensor

0 °C

33.8 k

Ω

10 °C 20 °C 30 °C

20.35 k

Ω

12.59 k

Ω

7.99 k

Ω



9-6-2. Outdoor unit

No.

Component name

Compressor

Type

DA422A3F-26M

1

Check procedure

Measure the resistance value of each winding with a tester.

Red

Resistance

Location value

Red

−

White

White

−

Black

Black

−

Red

1.04-1.16

Ω

1.04-1.16

Ω

1.04-1.16

Ω At 20 °C

White

Black

2

Outdoor fan motor

Type

ICF-280-A100-1

Measure the resistance value of each winding with a tester.

Red

P804,

P1104HR-E1

Location

Red

−

White

White

−

Black

Black

−

Red

Resistance value

14.8 ± 1.5

Ω

3

4-way valve coil

Type

STF-H01AP1874A1

4

2-way valve coil

White

Black

Measure the resistance value.

P804, P1104HR-E1

1617

Ω ± 113 Ω

Measure the resistance value.

P804, P1104HR-E1

1435

Ω ± 144 Ω

5

Pulse motor valve coil

Type

UKV-A038

1 Black

6 Grey

3 Red

M

Yellow Grey Orange

2 6 4

Resistance

Location value

Grey

−

Black, Red 43-49

Ω

Grey

−

Yellow, Orange 43-49

Ω

Condition 20 °C



No.

6

Component name Check procedure

Suction temperature (TS) sensor

Heat exchange temperature

(TE) sensor

Outdoor temperature (TO) sensor

Remove the connector and measure the resistance value with a tester.

10-20 k

Ω (Normal temperature)

Sensor (k

Ω)

Temperature

Outdoor heat exchange temperature sensor (TE)

0 °C 10 °C 20 °C 30 °C

33.8

20.4

12.6

8.0

Suction temperature sensor (TS)

7

Discharge temperature (TD) sensor

Remove the connector and measure the resistance value with a tester.

Sensor (k

Ω)

Discharge temperature sensor (TD)

Temperature

0 °C

161.3

10 °C

99.0

20 °C

62.4

30 °C

40.2



10

Hydro unit and outdoor unit settings

Hydro unit

1. Hydro unit Setting

1-1. Setting switch names and positions

SW01

SW12 SW13

SW02

SW11

SW10

SW07

SW06

1-2. SW02 (System switching 1)

SW02 Switching details

Boiler install position After 3WV heating side / Before 3WV

02_1

02_2

02_3

02_4

–

External cylinder thermostat connected.

External room thermostat connected.

Factory default

After 3WV, heating

–

No

No

OFF

OFF

OFF

OFF

Remarks

Before 3 WV

1-3. SW10 (Pump switching)

SW10

10_1

10_2

10_3

10_4

Switching details

Pump P1 operation during hot water mode

OFF = P1 ON during heat pump activate

ON = P1 Continuous run

Pump P1 operation during room heating. P1 pump stop or not using out side air temperature.

OFF = Continuous run

ON = Pump P1 stop when TO>20 °C (Available to change the temperature setting by FC 9E)

Synchronization of Pump P1 and P2

Pump P1 ON/OFF cycling (During long periods of system

OFF)

Factory default

Heat-pump activate

Continuous run

Non-synchronous

No

OFF

OFF

OFF

OFF

1-4. SW11 (Heater Yes/No switching)

SW11

11_1

11_2

11_3

11_4


Hydro unit backup heater Energized Yes/No

Hot water cylinder heater Energized Yes/No

External booster heater output Enabled Yes/No

–

Factory default

Energized

Energized

Enabled

–

OFF

OFF

OFF

OFF


SW12

12_1

12_2

12_3

12_4


Hot water supply is using

ZONE1 operation is using

ZONE2 operation is using

–

Factory default

Yes

Yes

No

–

OFF

OFF

OFF

OFF

Remarks

Remarks

Remarks

118



SW13

13_1

13_2

13_3

13_4


3WV SPST/SPSD Specification switching

Boiler output enabled

Auto Restart of power outage after system power failure.

–

2. Hydro unit Function Code Setting

2-1. How to set function code

Factory default

SPST

No

Yes

–

OFF

OFF

OFF

ON

<Procedure> Perform the following when no operation is in progress.

1

Press the SET and TEST and SELECT buttons at the same time for 4 seconds or longer.

(See display )

2

Specify CODE NO. (FC) with the TEMP. for temperature setting.

button

3

Select a setting data with the TIME setting.

The value in the DATA item changes.

button for timer

2

3

4

Press the SET button. (If lights, the status is confirmed)

To change the item to be set, go to

2

.

5

Pressing the TEST button moves the unit to the normal stop state.

4 5

Remarks

1

2-2. How to set remote controller function code

This operation can set the start and end time of the night time low noise, anti bacteria, night set back, or other functions.

<Procedure> Perform the following when no operation is in progress.

1

Press the TEST and CL and TEMP. buttons at the same time for 4 seconds or longer. (See display )

appears on the left.

2

Specify CODE NO. (FC) with the TEMP. for temperature setting.

3

Select a setting data with the TIME setting.

The value in the DATA item changes.

button


4

Press the SET button.(If the blinking changes to lit, the status is normal)

To change the item to be set, go to

2

.

5


2

3

4

1 5



Function code table

FC Item Details Factory default

01 Water heat exchanger capacity *1

02 Cooling/Non-cooling switching

08 Hot Water Boost operation time (operating time)

09 Hot Water Boost set temperature

0A Anti bacteria set temperature

0B Anti bacteria holding time

0C Mixing valve drive time

0F Hot water HP allowance while cooling + hot water supply

18 Upper limit of cooling set temperature

19 Lower limit of cooling set temperature

1A Upper limit of heating (ZONE1) set temperature

1B Lower limit of heating (ZONE1) set temperature

1C Upper limit of heating (ZONE2) set temperature

1D Lower limit of heating (ZONE2) set temperature

1E Upper limit of hot water set temperature

1F Lower limit of hot water set temperature

20 Hot water HP start temperature

21 Hot water HP stop temperature

22 Priority mode Hot water supply/Heating switching temperature

23 Boiler output enable switching temperature

24 Outside air temperature for hot water temperature compensation start

0012: P804XWH**-E1

0000: Cooling

0003: 30 min

0040: 40 °C

0065: 65 °C

0000: 0 min

0003: 30 sec

0000: Not allow

0018: 18 °C

0007: 7 °C

0037: 37 °C

0020: 20 °C

0037: 37 °C

0020: 20 °C

0060: 60 °C

0040: 40 °C

0020: 20 °C

0040: 40 °C

-0020: -20 °C

-0020: -20 °C

-0020: -20 °C

-

-

-

-

-

0015: P1104XWH**-E1 Depends on type

0001: Not cooling 0000: Cooling

0018: 180 min

0080: 80 °C

0080: 80 °C

0060: 60 min

0024: 240 sec

0001: Allow

0030: 30 °C

0018: 20 °C

0060: 60 °C

0037: 37 °C

0060: 60 °C

0037: 37 °C

0080: 80 °C

0060: 60 °C

0045: 45 °C

0050: 50 °C

0020: 20 °C

0020: 20 °C

0010: 10 °C

0006: 60 min

0075: 75 °C

0075: 75 °C

0030: 30 min

0006: 60 sec

0000: Not allow

0025: 25 °C

0007: 7 °C

0060: 60 °C

0020: 20 °C

0060: 60 °C

0020: 20 °C

0075: 75 °C

0040: 40 °C

0038: 38 °C

0045: 45 °C

0000: 0 °C

-0010: -10 °C

0000: 0 °C

25 Hot water temperature compensation value

26 Night set back change temperature range

27 Set temperature shift with heating Auto

29 Outside air temperature T1 temperature

0000: 0K

0003: 3K

-0005: -5K

-0015: -15 °C

2B Outside air temperature T3 temperature 0000: 0 °C

2C Set temperature A with outside air temperature of T0 0020: 20 °C

2D Set temperature B with outside air temperature of T1 0020: 20 °C

2E Set temperature C with outside air temperature of 0 °C 0020: 20 °C

0015: 15K

0020: 20K

0005: 5K

0000: 0 °C

0015: 15 °C

0060: 60 °C

0060: 60 °C

0060: 60 °C

0003: 3K

0005: 5K

0000: 0K

-0010: -10 °C

0010: 10 °C

0040: 40 °C

0035: 35 °C

0030: 30 °C

2F Set temperature D with outside air temperature of T3 0020: 20 °C

30 Set temperature E with outside air temperature of 20 °C 0020: 20 °C

31 Zone2 ratio with Zone1 as Auto

33 Hydro unit backup heater down time

34 Hydro unit backup heater up time

0000: 0%

0000: 5 min

0002: 15 min

0000: 10 min

0002: 30 min

3A Frost protection function Invalid/Valid

3B Frost protection set temperature

3C 2-way valve operation (logical reverse) control

0000: Invalid

0008: 8 °C

-

-

0060: 60 °C

0060: 60 °C

0100: 100%

-

0001: 10 min

0003: 20 min

0001: 20 min

0003: 40 min

0001: Valid

0020: 20 °C

0000: Energised during cooling

0001: Not energised during cooling

0025: 25 °C

0020: 20 °C

0080: 80%

0001: 10 min

0000: 10 min

0001: Valid

0015: 15 °C

0000: Activate during cooling

3E Heating HP/Boiler priority switching when using boiler 0000: Priority on HP

40 Activate/deactivate room temperature control 0000: Deactivate

0001: Priority on boiler

0001: Activate

*1 FC_01 is needed for PCB replacement or function code reset procedure has been completed.

*2 System restart with remote controller.

*3 Restart in the mode when stopping.

*4 In addition, it is enable only when switch 2-3 is set to “OFF” and FC61 is set to “3”.

0000: Priority on HP

0000: Deactivate



FC Item Details Factory default

52

54

58

59

5A

5B

61

External input contact logic (must be used in with

FC61)

Logic of 3-way valve’s action when powered (Single return only)

Night set back is activated

Interval of Mixing Valve control

P1 setting while in hot water supply mode

Boiler running setting

Changing the target of stopping/starting by external signal or changing the TEMPO setting

0000: CLOSE to stop system *2

0001: OPEN to stop system *2

0002: OPEN to stop system, CLOSE to restart system (Statics input)

0003: CLOSE to stop system, CLOSE again to restart system (plus input)

0000: Not reversed (Hot water mode when powered)

0001: Reversed (Heating when powered)

0000: Zone 1 & 2

0001: Zone 1 only

0000:CLOSE to stop

0000: Not reversed

(Hot water mode when powered)

0000: Zone1 & 2

0001: 1 minute -

0000: While running HP only

0001: P1 continues running

0030: 30 minutes 0004: 4 minutes

0000: While running

HP only

0003: Boiler only 0000: Boiler and HP

0001: Boiler only with pump running

0002: Heater

0003: Boiler only (Pump stopping)

0000: Hot water supply and heating

0001: Keeping initial status *3

0002: Hot water supply only

0003: Heating only

0004: TEMPO1 (Not activate the heaters)

0005: TEMPO2 (Not activate the heaters, inlet pump, heat pump)

0000: Hot water supply and heating

62

64

6E

Activate/deactivate A02 error detection

Continuously run or stop the P2 pump while cooling

67 Changing the condition of optional output (For the optional PC board connected to CN209)

To diff temperature, when pump P1 stop at to 20 °C

73 Hot water tank heater start time of heat-pump while operating

0000: Activate

0001: Deactivate

0000: Continuously run P2

0001: Stop P2

65 P1 pump setting when the thermostat is deactivated in the room temperature remote controller and room temperature thermostat settings

0000: Continuously run P1

0001: Stop P1 when the thermostat is OFF



0001: 1-3 As error is detected

2-3 During operation

0001: 1K

0000: 30 min passed

0000: Activate

0000: Continuous running

0000: Continuous running



0005: 5K 0002: 2K

0003: 120 min passed 0000: 30 min passed

92 Upper room temperature limit when cooling

93 Lower room temperature limit when cooling

94 Upper room temperature limit when heating

95 Lower room temperature limit when heating

0000: 0 °C

0000: 0 °C

0000: 0 °C

0000: 0 °C

96 Initial water temperature setting when controlling cooling by the room temperature remote controller and room temperature thermostat

0005: 5 °C

9D Initial water temperature setting when controlling heating by the room temperature remote controller and room temperature thermostat

0020: 20 °C

-

-

-

-

-

-

0055: 55 °C

0055: 55 °C

0055: 55 °C

0055: 55 °C

0030: 30 °C

0060: 60 °C

0029: 29 °C

0018: 18 °C

0029: 29 °C

0018: 18 °C

0020: 20 °C

0040: 40 °C

0020: 20 °C 9E TO temperature setting to stop the P1 pump during the middle period heating

0010: 10 °C

A0 P1 pump speed control changes the percentage duty of the PWM control

0000: 100%

A1 Outside air temperature T0 temperature

A2 Zone2 temperature setting method

0030: 30 °C

0005: 50%

-0030: -30 °C -0020: -20 °C

0000: Percentage (FC31)

0001: Fixed value (FCA3~ A5)

A3 Set temperature A' with outside temperature of T0

A4 Set temperature B' with outside temperature of T1

0020: 20 °C

0020: 20 °C

-

-

0060: 60 °C

0060: 60 °C





0000: 100%

-0020: -20 °C

0000: Percentage

0040: 40 °C

0035: 35 °C

121


FC Item Details

A5 Set temperature E' with outside temperature of 20 °C

B2 HP restart water temperature in A zone. (Valid only room temp control using 2nd remote controller)

0020: 20 °C

0020: 20 °C

0060: 60 °C

0037: 37 °C

B5 Initial water temperature setting method when controlling heating by the room temperature remote controller and room temperature thermostat

B6

B8

Changing the target of stopping / starting by external signal (CN210 - terminal 2 and 3)

Forcibly heater off at T0

≥ A °C

0000: The fixed temperature by FC9D

0001: The calculated temperature by Auto curve

0000: none (Local hot water tank thermostat)

0001: Hot water supply control *4

0000: no restriction, 0001: 20 °C

0002: 15 °C, ···, 0006: -5 °C

B9 Backup heater energization temperature during defrosting.

BA Intermittent operation at T0

≥ A °C

Correction coefficient B

0000: 0K, ···, 0004: 40K

BB Intermittent operation at T0 < B °C

0000: continuous operation

0001: 20 °C, ···, 0006: -5 °C


0001: 35 °C, ···, 0003: 25 °C

0000: 5 min, ···, 0005: 30 min BC Pump off time during thermostat off operation





Factory default

0020: 20 °C

0025: 25 °C

0000: The fixed

0000: none

0000: no restriction

0000: 0K



0000: 5 min

Remote controller function code table

FC Item Details Fist shipment

02 Temperature correction by the room temperature sensor

(heating)

-10K~+10K: By 1K steps -1: -1K correction

03 Temperature correction by the room temperature sensor

(cooling)

05 24H/12H display switching

-10K~+10K: By 1K steps

0: 24H display

-1: -1K correction

1: 12H (AM/PM) display 0: 24H display

09 Night time low-noise mode

0A Night time low-noise start time

0B Night time low-noise end time

0C Anti bacteria start time

0D Anti bacteria start cycle

0E Starting time of Night set back

0F Ending time of Night set back

11 Remote controller Alarm Tone.

12 Frost running period (days)

13 Frost running period (hours)

0: Invalid

0 - 23 (0:00 to 23:00)

0 - 23 (0:00 to 23:00)

0 - 23 (0:00 to 23:00)

1: Valid

1 - 10 (Every day to 10-day cycle)

0 - 23 (0:00 to 23:00)

0 - 23 (0:00 to 23:00)

0: Alarm Tone OFF 1: Alarm Tone ON

(0 days – 20 days)

(0 hours – 23 hours)

0: Invalid

22: 22:00

06: 06:00

22: 22:00

07: 7-day cycle

22: 22:00

06: 06:00

1: Alarm Tone ON

00: No setting

00: No setting



2-3. How to reset hydro function code

If the hydro unit PCB has been replaced, it is necessary to change the FC 01 (capacity setting)

(1) Preparation

1) Turn all of the remote controllers "OFF" for the hot water supply [HOTWATER] and heating [ZONE1,2].

2) Turn off the power supply of the hydro unit and the outdoor unit.

3) Remove the front panel of the hydro unit and cover to the hydro unit electrical box.

4) Set SW06_1 and _2 "ON".

(2) Procedure

1) Turn on the power supply of the hydro unit and the outdoor unit.

• The small yellow LED located near the MCU should be flashing slowly.

2) Press tactile switch SW07 until the yellow LED turns off.

• When the tactile switch SW07 has been press for 5 sec, flashing becomes quickly. And when the switch will be pressed further 5 sec, the yellow LED will turn off.

When the SW07 is released, the yellow LED start to flash quickly again.

3) Turn off the power supply of the hydro unit and the outdoor unit.

4) Set SW06_1 and _2 to "OFF".

5) Replace the electrical box cover and front panel on the hydro unit.

Yellow LED

SW06

SW07

2-4. How to reset remote controller function code

It is not possible to reset the remote controller function code setting back to the default values.



3. Test run

<Procedure>

A test run is available with an actual operation in progress or stopped. A test run is available in any of the hot water supply, heating, or cooling mode. The compressor starts according to the test run frequency. A test run automatically stops after 30 minutes at the longest if not stopped with the remote controller.

1

Press the remote controller TEST button for 4 seconds or longer to display "TEST" on the LCD screen.

<For hot water supply test run>

2

Press the HOT WATER button, and a hot water supply operation starts after 3 minutes. (See display )

(The pump immediately starts.)

3

Pressing the HOT WATER water supply operation.

button again stops the hot

1, 4 2, 3

<For heating test run>

1

Press the ZONE1,2 button, and a heating operation starts after 3 minutes. (See display )

(The pump immediately starts.)

2

Pressing the ZONE1,2 operation.

button again stops the heating

<For cooling test run>

2

Press the ZONE1,2 button and then OPERATE MODE

, and a cooling operation starts after 3 minutes.

(The pump immediately starts.) (See display )

3

Pressing the ZONE1,2 operation.

button again stops the cooling

1, 4 2, 3

4

Press TEST on the remote controller to exit the test run mode.

124


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4. Auto Curve Setting

FC code setting can make flexible Auto-Curve settings.

<Preparation>

1

Press the TEST and SET and SELECT buttons at the same time for 4 seconds or longer.

(See display )

(Make sure that no operation is in progress.)

2

Specify an item code (FC) from among 29 to 2F with the

TEMP. button for temperature setting.

3

Set data with the TIME button for timer setting.

4


2

3

5

Repeat

2

through

4

for each item.

6


4 6 1

<ZONE1>

• An operation starts at the set temperature of straight -line approximation for the following: water temperature A °C with the outside temperatureT0 °C, B °C with T1 °C, C °C with T2 °C, D °C with T3 °C, and E °C with 20 °C.

TSC_F(°C)

A(40)

B(35)

C(30)

D(25)

E(20)

± 5K adjustable (FC 27)

Related FC

FC No.

2C

Setting item

Setting temperature A at T0

2D

2E

Setting temperature B at T1

Setting temperature C at T2(= 0

°C

)

Setting temperature D at T3

Setting temperature E at 20

°C

2F

30

A1

29

2B

27

Outside temperature T0



Set temperature shift with heating set to auto

Default

40

35

30

25

20

-20

-10

10

0 range

20~60 °C

20~60 °C

20~60 °C

20~60 °C

20~60 °C

-30~-20 °C

-15~0 °C

0~15 °C

-5 to 5K

T0

(-20)

T1

(-10)

T2=0 T3

(10)

20 TO (°C)

<ZONE2>

• Set temperature of the ZONE2 can be selected from two methods (FC_A2). One is a percentage of ZONE1, the other is a fixed value.

FC_A2 = "0" : Percentage method that is set by FC_31.

FC_A2 = "1" : Fixed value method that is set by FC_A3, A4 and A5.

However, it is automatically controlled the set temperature of ZONE1 to be the ZONE2 or more.

FC_A2=0 Percentage method FC_A2=1 Fixed value method

TSC_F(°C)

A(40)

B(35)

C(30)

D(25)

E(20)

ZONE 1

ZONE 2

80 % (FC_31) of ZONE1

TSC_F(°C)

A'(40)

B'(35)

T0

(-20)

T1

(-10)

T2=0 T3

(10)

20 TO (°C)

Auto-Curve in ZONE2 shows 80% (FC) of that of ZONE1,the water temperature setting does not fall below 20 °C.

E'(20)

T0

(-20)

T1

(-10)

20 TO (°C)

The ZONE2 set temperature A' °C with the outside temperature T0 °C, B' °C with T1 °C, E' °C with 20 °C.

Related FC

FC No.

A2

Setting item

The choice of how to set ZONE2

A3

A4

Setting temperature A' at T0

Setting temperature B' at T1

A5

31

Setting temperature E' at 20 °C

Auto-Curve ratio of ZONE2

Default

0

40

35

20

80 range

0 or 1

20~60 °C

20~60 °C

20~60 °C

0~100%

125


• Auto-Curve temperature shift

Without Auto-Curve individually set, the set temperature can be shifted in the range of ±5k of the current setting. (The set temperature is valid only when Auto operation is in progress. It also applies to

Zone 2.)

1

Press the AUTO TEMP longer. (See display )

button for 4 seconds or

(The remote controller FC setting screen appears.)

2

Set a temperature shift range with the TEMP. button for temperature setting. (-5k to 5k)

3


4


2

5. Time Setting

1

Press the TIME button for 4 seconds or longer. (The screen moves to the time setting mode.) (See display )

Day, time, , and indications blink.

(Time setting is available during an operation.)

2

Specify a day to be set.

Press the DAY button to select the current day.

The symbol moves along above the days. ( moves by each button press from MO through SU.)

3

Set time.

Use the TIME display by 10 minutes.

button to set time. Long press changes time

4

Pressing the SET button ends the time setting. Ending the time setting changes the days and time to the lit state and returns to the normal display.

and indications go out.)

1

4

3 4

3 2

1



6. Scheduled Operation Setting

Schedule setting makes the following modes to be flexibly set: hot water supply, heating, cooling, hot water supply and heating, hot water supply and cooling, and stop, and set temperature.

6-1. How to set scheduled operation

<Preparation>

Set the remote controller time.

1

Press the remote controller SCHEDULE for 4 seconds or longer. (See display )

(Moves to the schedule setting mode)

button

The following blink: , , and P1 indications, items to be set, the set temperature of ZONE1/2 and HOT WATER (previous set temperature), day ( ), and time .

2

Specify a day to be set.

Press the DAY button to move day to the day to be set.

( moves by each button press from MO through SU. From SU, the symbol moves to MO through SU (Every day).

Press the SET button to confirm the day to be set.

4

1,

6,

7

4

3

Specify a step from among steps 1 to 8.

Press the STEP button to specify a step to be set.

(The selection moves by each STEP button press among 1 to 8, C, and L.)

Selecting "C" copies the day details already set. Go to

7

.

Selection "L" clears the setting details.

Press the SET button to confirm the step to be set.

3,6,7 2,7 4

4

Specify set time, operation mode, and set temperature.

Time setting:

Operation mode:

Use the TIME button to set time.

Press HOT WATER

ZONE1,2

for hot water supply, ZONE1,2

for cooling, and then press OPERATE MODE

HOT WATER or ZONE1,2 again displays " ", indicating stop.

When an operation mode is set, " " appears for heating, " " for cooling, or " " for hot water supply, and also the temperature set last time is displayed.

for heating, or

. Pressing

Temperature setting: Use the SELECT temperature with the TEMP.

button to select a mode

button.

and set

Press the SET button to confirm the set time, operation mode, and set temperature to be set.

5

Repeat

2

through

4

.

(If only one schedule is set, the setting applies to all the time period after the set time. Two schedule settings are recommended.)

6

Pressing the SCHEDULE button ends the schedule setting. Ending the schedule setting blinks the light . Pressing the SET button during the 5-second blinking changes to lit, and the schedule operation starts.

7

How to copy program

Select "C" in

3

and press the SET button. (Copy source is determined.)

Press the DAY button to move to the day of copy target. Pressing the SET button overwrites the program setting to the copy target.

To set more, repeat step

2

through

4

. Pressing the SCHEDULE button ends the schedule setting.



6-2. How to start and cancel schedule operation

<Operation start>

Without schedule operation set, press the remote controller SCHEDULE button. blinks.

Pressing the SET button during the 5-second blinking changes to lit, and the schedule operation starts.

<Operation cancel>

With schedule operation set, press the remote controller SCHEDULE button. blinks.

Pressing the CL button during the 5-second blinking causes to put out, and the schedule operation is cancelled.

7. Frost Protection Setting

This setting keeps a room with weak heating when users are not home for long hours.

1

Press the ZONE1,2 button to start a heating operation.

(This is available only for a normal heating operation.)

(No frost protection setting is provided to hot water supply and cooling.)

2

Pressing the FORST PROTECTION button displays the symbol and "F" for temperature setting. (See display )

The heating operation of 15 °C is set. In FC_3B in 2-2 section, the set temperature can be changed in the range of 10 to 20 °C.

3

Pressing the FORST PROTECTION button makes disappear, and the set temperature returns to the normal heating temperature. (Pressing the ZONE1,2 button ends both the frost protection and the heating operation.)

2,3 1,3

<How to set FROST PROTECT operation end time>

1

Press the FROST PROTECTION button for 4 seconds or longer.

(Moves to the FROST day setting mode) (See display )

"12" in the Code No. field and the current time displayed blink.

2

Press the TIME button to set a desired end days.

Pressing SET changes the time to be lit and the setting is confirmed.

3

Press the TEMP.

"13"

button to change Code No.

(The codes "12" and "13" only can be changed.)

3

2,4

4

Press the TIME hours.

button to set a desired end


5 1

5

Press the TEST button to exit the FROST PROTECTION days & time setting mode.



8. NIGHT Operation Setting

For night time hours, this setting changes set temperature of heating or cooling by 5k as save operation.

1

Press the ZONE1,2 operation. (See display )

button to start a heating or a cooling

(Night time operation is not available for hot water supply. Use the schedule operation.)

2

Pressing the NIGHT button displays the symbol.

A night time operation lowers the set temperature by 5K for heating and raises 5K for cooling during the set time period from 22:00 to 6:00

(Default).

3

Pressing the NIGHT button again makes disappear, and the normal operation starts.

2,3 1

<How to set NIGHT operation start and end time>

1

Press the NIGHT button for 4 seconds or longer.

(Moves to the NIGHT time setting mode)

(See display )

"0E" in the Code No. field and the current time displayed blink.

2

Press the TIME button to set a desired start time.


3

Press the TEMP. button to change Code No.

(The codes "0E" and "0F" only can be changed.)

4

Press the TIME button to set a desired end time.


5

Press the TEST button to exit the NIGHT time setting mode.

3

2,

4

1 5



9. Anti Bacteria Setting

This setting regularly raises the hot water cylinder temperature to prevent bacteria from growing.

1

Press the HOT WATER supply operation.

(Normal hot water supply operation)

button to start a hot water

(No anti bacteria setting is provided to heating and cooling.)

2

Pressing the ANTI BACTERIA symbol. (See display )

button displays the

(The set temperature does not change) The hot water supply operation of 75 °C starts.

The anti bacteria operation raises water temperature to 75 °C with the heat pump and heater, and automatically ends after 30 minutes.

3

After that, an anti bacteria operation automatically starts at the set time and cycle.

4

Pressing the ANTI BACTERIA button makes disappear, and the anti bacteria operation does not start.

2,4 1

<How to set anti bacteria temperature and holding time>

In FC_0A or 0B (See 10-2-2 (See page 119)), the set temperature and holding time can be changed.

FC_0A: Set temperature change range 70 to 80 °C (75 °C: default)

FC_0B: Holding time change range 0 to 60 minutes (30 minutes: default)

<How to set anti bacteria start time and cycle>

1

Press the ANTI BACTERIA or longer. (See display )

button for 4 seconds

(Moves to the anti bacteria time setting mode)

"0C" in the Code No. field and the currently set and indication blink.

2

Press the TIME button to set a desired start time.

Pressing SET changes DATE (set time) 0C, and indication to be lit and the setting is confirmed.

3

Press the TEMP. to "0d".

The "0d" and

button to change Code No.

indication blink.

3

2,

4

4

Press the TIME button to set a desired cycle.

Pressing SET changes DATE (set time) 0d, and indication to be lit and the setting is confirmed.

5

Press the TEST button to exit the anti bacteria time setting mode.

5 1



10. Hot Water Boost Setting

This setting heats the water whenever necessary by using the heat pump and hot water cylinder heater.

1

Press the HOT WATER supply operation.

(Normal hot water supply operation)

button to start a hot water

2

Pressing the HOT WATER BOOST

symbol. (See display )

button displays the

(The set temperature does not change) The hot water supply operation of 75 °C starts.

HOT WATER BOOST operation with the heat pump and heater ends when the water temperature reaches 75 °C; however, the normal hot water supply operation automatically starts after 60 minutes even if the temperature is not as high as 75 °C.

3

Pressing the HOT WATER BOOST button again makes

disappear, and the HOT WATER BOOST ends.

2,3 1

<How to set HOT WATER BOOST operation time and temperature>

In FC_08 or 09 (See 10-2-2 (See page 119)), the operation time and set temperature can be changed.

FC_08: Operation time change range 30 to 120 minutes (60 minutes: default)

FC_09: Set temperature change range 40 to 80 °C (75 °C: default)

11. Night time Low-noise Setting

• This setting is used to reduce noise output, from the outdoor unit, during night time for neighbours. Night time low-noise operates with lower operation frequency and fan tap than usual only for the set time period.

• The operation is the same as usual hot water supply, heating, or cooling.

• Adjust the unit time before making the settings.

3,

5

<How to enable, set start time and end time of night time lownoise>

2,

1

Press the TEST and TEMP. button at the same time for 4 seconds or longer. (See display )

4,

6

(Moves to the night time low-noise setting mode)

"09" displayed in the Code No. field and the DATA currently displayed, , and blink.

1

4,6 7

2

Press TIME to set enabled "1" or disabled "0".

Pressing SET changes DATA and

1 or 0 can be selected.)

indication to be lit and the setting is confirmed. (For DATA, only

3

Press the TEMP. blink.

button to change Code No. to "0A". DATA and indication again

4

Press the TIME button to set start time. Pressing SET changes DATA and indication to be lit and the setting is confirmed.

5

Press the TEMP. blink.

button to change Code No. to "0B". DATA and indication again

6

Press the TIME button to set end time. Pressing SET changes DATA and indication to be lit and the setting is confirmed.

7

Press TEST to exit the night time low-noise time setting mode. out.

and indications go

131


12. Forced Defrosting Setting

The FC code setting (See 10-2-2 (See page 119)) can activate the forced defrosting mode for the outdoor unit

operation.

(Preparation)

1

Press the remote controller buttons, TEST , SET , and SELECT , at the same time for 4 seconds or longer.(Make sure that no operation is in progress.)

2

Specify CODE NO. (FC) 46 with the TEMP. button for temperature setting.

3

Set DATA to 0001 with the TIME setting. (See display )

(Factory default is 0000)


4

Press the SET button. (If OK lights, the status is normal)

5


2

3

4 5

1

(Operation)

• Press the ZONE1,2 button.

• Set the operation to the heating mode.

• After a while, forced defrosting signals are transmitted to the outdoor unit, and the unit starts defrosting.

(Forced defrosting lasts for up to 10 minutes.)

• After the defrosting, the heating operation starts.

• To perform defrosting again, start with

1

above.

(Performing the forced defrosting once cancels the forced defrosting setting above described.)



13. Display Function of Set Temperature and Other Settings

■

Sensor temperature display calling

<Details>

This function calls the service monitor mode from the remote controller to show the data of the remote controller, the hydro unit, and outdoor unit.

<Procedure>

1

Press the TEST and CL buttons at the same time for 4 seconds or longer to call the service monitor mode.

The service monitor lights up, and the temperature of CODE No.

"00" displays at first. (See display )

2

Press the TEMP. button for temperature setting to change the item code to one to be monitored.

The following table shows the item codes.

Item code

00

01

02

03

04

06

07

08

09

0A

0B

0E

Data name

Control temperature (Hot water cylinder), (TTW)

Control temperature (Zone1), (TWI)

Control temperature (Zone2), (TFI)

Remote controller sensor temperature

Condensed temperature (TC)

Water inlet temperature (TWI)

Water outlet temperature (TWO)

Water heater outlet temperature (THO)

Floor inlet temperature (TFI)

Hot water cylinder temperature (TTW)

Mixing valve position

Low pressure (Ps)

°C

°C

°C

°C

Unit

°C

°C

°C

°C

°C

°C step

×10 kPa

2

Item code

60

61

Data name

Heat exchange temperature (TE)

Outside air temperature (TO)

6D

70

72

73

62

63

65

6A

74

7A

Discharge temperature (TD)

Suction temperature (TS)

Heat sink temperature (THS)

Current × 10

Heat exchanger coil temperature (TL)

Compressor operation Hz

Number of revolutions of outdoor fan (lower)

Number of revolutions of outdoor fan (upper)

Outdoor PMV position × 1/10

Discharge pressure (PD)

Unit

°C

°C

°C

°C

°C

A

°C

Hz rpm rpm pls

×10 kPa

Item code

F0

F1

F2

F3

F4

Data name

Micro computer energized accumulation time

Hot water compressor ON accumulation time

Cooling compressor ON accumulation time

Unit

× 100 h

× 100 h

× 100 h

Heating compressor ON accumulation time × 100 h

Built-in circulation pump operation accumulation time × 100 h

F5

F6

F7

Hot water cylinder heater operation accumulation time

Backup heater operation accumulation time

Booster heater operation accumulation time

× 100 h

× 100 h

× 100 h

3

Pressing the TEST button returns to the usual display.

1 3



14. Failure History Calling Function

<Details>

This function calls the previous failure details.

<Procedure>

1

Press the TEST and SET buttons at the same time for 4 seconds or longer to call the service check mode.

The service check lights up with CODE No. "01" displayed at first, and the latest warning detail is displayed. The warning details of the current warning is displayed.

(See display )

2

To monitor other failure history, press the TEMP.

button for temperature setting to change the failure history number (item code).

Item code "01" (Latest) ---> Item code "01" (Old)

Note: The failure history contains the last 4 failures.

3

Pressing the TEST button returns to the normal display.

2

1 3

NOTE

Do not press the CL button. Pressing the button deletes all the failure history of the hydro unit.

If the button is pressed and the history is deleted, perform power cycle.

If the current failure is the same as the one occurred last time before deleted, the history may not record the current failure.



Outdoor unit

15. Outdoor Unit Setting

15-1. Refrigerant recovery control

Although HFC refrigerant is "Ozone depletion potential = 0", emission control is applied to it as a greenhouse effect gas.

This model has a switch for the outdoor unit to perform an environment-friendly refrigerant recovery operation

(pump down) when the model is replaced or discarded.

[How to operate]

1

Remove the water in the hydro unit.

(With the water remained in the hydro unit, performing refrigerant recovery may freeze the water and burst the unit.) *1

2

Set all the SW804 dip switches to OFF (initial status), and press the push-button switch SW801 for approx.

1 second.

A cooling operation starts. (During the operation, D805

(green LED) blinks.

Note that this operation lasts for 10 minutes.

3

After 3 minutes has passed, close the liquid-side valve.

4

After the refrigerant recovery is completed, close the gas-side valve.

5

Press again the push-button switch SW801 for approx. 1 second. The outdoor unit stops operation (cooling).

<HWS-P804HR-E1, P1104HR-E1>

SW804 All OFF (Initial status)

SW801 Press for approx. 1 sec

D800

D801

D802

D803

D804

D805

SW805 (Green LED) blinks.

*1 : If can not remove the water

Operate the circulation pump, to prevent freezing.

1.Turn off the power. (hydro and outdoor unit)

2.Set SW06-2 “ON”.

3.Turn on the power. (hydro and outdoor unit)

4.Rotate switch SW01 to position “1” and press tactile switch SW07 for 5 sec, or longer.

5.Rotating the rotary SW01 to position “16”.

6.If you finish refrigerant recovery operation, set SW06-2 “OFF” and set SW01 “1”.



15-2. Outdoor unit settings (Existing piping, Power save, etc.)

The following settings are available with dip switch setting and jumper wire setting.

Where to set Function

Existing piping setting

Power save setting

Snow prevention fan control

Defrosting time change

Maximum frequency change

SW802

--- OFF

--- Existing piping setting

--- Power save setting

--- Snow prevention fan control

* All OFF position at factory default

J805, J806

J807

Control details

When using a Ø19.1 pipe for the existing piping, set the switch to ON.

This case may decrease heating capacity depending on the outside air temperature when heating or on a room temperature.

When using the power save function, set the switch to ON. This setting controls the compressor frequency lowering (about 10%) according to the heat exchange temperature of the hydro unit during a heating or hot water supply operation.

This control enables the function that prevents snow from entering the draft air duct through the fan guard or a heat exchanger gap and causing motor lock. If the outside air temperature is 0 °C below, this control operates the outdoor fan in W5 even if the compressor is not in operation.

If the defrosting interval is shorter than the standard, the jumper wire is cut.

For the control details or how to cut the jumper wire, see defrosting control.

If the maximum value of compressor frequency need to be lowered, cut the jumper wire shown on the left.

This control lowers the maximum frequency when hot water supply, heating, or cooling is in operation.

In this case, the maximum capacity decreases.

Maximum frequency of compressor

Model

Standard

P804HR-E1

Cooling Heating

P1104HR-E1

Cooling Heating

37.2 70.2 53.4

90.0

33.0 63.0 48.0 81.0



15-3. Service support functions (LED indication, Switch operation method)

The following settings are available with dip switches.

(1) Overview

Using 3 dip switches (SW802, SW803, SW804) and 2 push-button switches (SW800, SW801) can make settings available and confirm operations.

For operation

Part number

SW800

SW803

SW801

SW804

SW802

Specification

Press button switch

Dip switch

Press button switch

Dip switch

Dip switch

Operation details

This switch switches the indications of LED (D800 to D804) on the outdoor control board.

This switch enables users to perform a special operation for maintenance and inspection.

This switch performs initial settings. (See 10-15-2 (See page 136))

For display

Part number

D502

D503

D800 to D804

D805

Specification

Amber LED

Green LED

Yellow LED

Green LED

Operation details

Signal display (signals from the hydro unit) of communication between hydro unit and outdoor unit (serial communication)

Signal display (signals from the outdoor unit) of communication between hydro unit and outdoor unit (serial communication)

Abnormality indication

All OFF of SW803 or the lit status of any of D800 to D804 indicates that the outdoor control unit detects an abnormality.

Setting SW803 to other than OFF shows details with LED indication.

Energization indication

This LED lights when the outdoor unit is energized.

During a special operation with the SW801 or SW804 operation, this LED blinks.

Note: All the LEDs have no colour when off.

<HWS-P804HR-E1, P1104HR-E1>

SW804

SW801

Special operation switch (Operations for maintenance and inspection)

D800

D801

D802

D803

D804

D805

SW800

SW803

LED indication switching switch

D800

(Yellow LED)

D801 (

Yellow LED

)

D802 (

Yellow LED

)

D803 (

Yellow LED

)

Abnormality indication and other indications

D804 (

Yellow LED

)

D805 (

Green LED

) ---

Energization indication

D503 ( Green LED ) --- Serial signal (Outdoor to hydro)

D502 ( Amber LED) --- Serial signal (Hydro to Outdoor)

SW802 --- Initial settings switching



(2) LED indication switching (SW800, SW803 operation)

(2) -1. Indication switching list

Operating SW803 can switch the indications of LED D800 to D804 on the outdoor control board.

Switch

SW803

Function and details

Abnormality indication (Current abnormality)

This switch indicates the current abnormality.

Without an abnormality, the lights are off.

(See (2)-2 (See page 139))

SW803

TD

SW803

TE

SW803

TS

SW803

Abnormal indication (Latest abnormality: Latest abnormality including the current one)

After the abnormality status is released, this setting enables users to see the previous abnormalities.

(Previous abnormality can be checked even if the power is once turned off.)

* If there is an abnormality now, the abnormality details of the current one is displayed.

* This setting does not display a TO sensor failure.

(Check for the failure with the setting for current abnormality.)

(See (2)-2 (See page 139))

Temperature sensor indication

These switches indicate the temperature sensor detecting value.

* TC=TWO+2 (heating, hot water supply)

TC=TWO (cooling)

(See (2)-3 (See page 140))

TO

SW803

TL

SW803

TH

SW803

TWI

SW803

TC*

SW803

SW803

SW803

SW803

Current indication

This switch indicates the current value in the outdoor unit.

Compressor operation frequency indication

This switch indicates the compressor operation frequency.

PMV position indication

This switch indicates PMV (Pulse motor valve) position.

(See (2)-3 (See page 140))

(See (2)-3 (See page 140))

(See (2)-3 (See page 140))



(2) -2. Abnormality indication

The current abnormality and the latest abnormality (including the current one) can be identified by the

LED D800 to D804 on the outdoor control board.

1) Setting all the SW803 dip switches to OFF indicates the current abnormality status.

2) Setting SW803 dip switch <1> only to ON indicates the previous abnormality (including the current one).

3) An abnormality lights any of the LEDs from D800 to D804.(Indication 1)

4) Pressing the push-button switch SW800 for approx. 1 second switches indication.(Indication 2)

5) When SW800 is again pressed or 2 minutes has passed, the indication 1 status returns.

Current abnormality

SW803

Latest abnormality

SW803

Legend)

---- Off ---- Light ---- Blink

Indication 1

(Initial indication)

Indication 2

(SW800 operation)

Abnormality details

Normal

Discharge temperature sensor (TD) failure

Heat exchanger temperature sensor (TE) failure

Heat exchanger temperature sensor (TL) failure

Outside air temperature sensor (TO) failure

Suction temperature sensor (TS) failure

Heat sink temperature sensor (TH) failure

Heat exchanger, suction sensor (TE, TS) wrong wiring

High pressure sensor (PD) failure

EEPROM failure

Compressor break down

Compressor lock

Current detection circuit failure

Faulty compressor case thermostat

Not set up the capacity

Combination failure between the hydro unit

Communication failure between MCUs

Other abnormality (e.g. Compressor's loss of synchronism)

Abnormal discharge temperature

Power failure

Heat sink overheat failure

Gas leakage detection

4-way valve reverse failure

Hi pressure protection operation

Fan drive system failure

Compressor drive

Compressor rotor position failure

Remote controller

Abnormality code

---

F04

F06

F07

F08

F12

F13

F15

F24

F31

H01

H02

H03

H04

L10

L15

L29

No abnormality confirmation

P03

P05

P07

P15

P19

P20

P22

P26

P29



(2)-3. Sensor, Current, Compressor operation frequency, PMV position indication

The values detected by controller, such as temperature sensor or current values, can be easily checked.

Legend)

----

Off

----

Light

Item setting Temperature sensor ( )

TD

SW803

TE

SW803

TS

SW803

TO

SW803

TL

SW803

Current

(A)

Compressor operation frequency

(r.p.s.)

SW803

PMV position

(pulse)

SW803 SW803

TH

SW803

TA

SW803

TC*

SW803

*Refer to page 138

LED indication less than -25

-25 - -21

-20 - -16

-15 - -11

-10 - -6

-5 - -1

0 - 4

5-9

10-14

15-19

20-24

25-29

30-34

35-39

40-44

45-49

50-54

55-59

60-64

65-69

70-74

75-79

80-84

85-89

90-94

95-99

100-104

105-109

110-114

115-119

120 or higher sensor failure, not connected

8-8.9

9-9.9

10-10.9

11-11.9

12-12.9

13-13.9

14-14.9

15-15.9

16-16.9

17-17.9

0-0.9

1-1.9

2-2.9

3-3.9

4-4.9

5-5.9

6-6.9

7-7.9

18-18.9

19-19.9

20-20.9

21-21.9

22-22.9

23-23.9

24-24.9

25-25.9

26-26.9

27-27.9

28-28.9

29-29.9

30-30.9

31 or higher

95-99

100-104

105-109

110-114

115-119

120-124

125-129

130-134

135-139

140-144

145-149

150-154

155 or higher

45-49

50-54

55-59

60-64

65-69

70-74

75-79

80-84

85-89

90-94

0-4

5-9

10-14

15-19

20-24

25-29

30-34

35-39

40-44

* TD, TL, and TH show errors below the ordinary temperature because they are sensors for high temperature.

* Current value for the outdoor unit only is shown.

380-399

400-419

420-439

440-459

460-479

480-499

500

-

-

-

-

-

-

0-19

20-39

40-59

60-79

80-99

100-119

120-139

140-159

160-179

180-199

200-219

220-239

240-259

260-279

280-299

300-319

320-339

340-359

360-379

140


(3) Special operation for maintenance and inspection (SW801, SW804)

SW801 and SW804 can perform the following special operations for maintenance and inspection.

1) Switches the dip switch SW804. (See the table below)

2) Presses the push-button switch SW801 for approx. 1 second.

3) Starts the functions shown below. During the start processing of each function, LED D805 (Green) blinks.

4) When the push-button switch SW801 is pressed for approx. 1 second, or the dip switch SW804 is switched, or the defined time for each function has passed, the each function stops and LED D805 (Green) returns to continuous lit.

<Special operation>

SW804

SW804

Operation when press button switch SW801 is pressed

Refrigerant recovery operation

The outdoor unit operates cooling. The hydro unit may freeze with this operation alone. Remove beforehand the

water in the hydro unit. (See 10-15-1 (See page 135))

SW804

Hydro unit cooling request

Performs a trial cooling operation. (See Note1 (See page 141))

SW804

Hydro unit heating request

Performs a trial heating operation.(See Note1 (See page 141))

SW804

SW804

Fan motor forcible operation

Forcibly performs a fan motor operation.

When SW801 is pressed again or after 2 minutes, the operation returns to the normal control.

(No operation particularly)

SW804

SW804

SW804

PMV full open operation

Fully opens PMV (Pulse motor valve).


PMV full close operation

Fully closes PMV (Pulse motor valve).


PMV half open operation

Half opens (250 pulses) PMV (Pulse motor valve).


Caution:

Although these controls are available during an operation, basically perform

them when no operation is in progress.

Performing these controls during an operation may cause dangerously rapid pressure change.

SW804

4-way valve relay operation (RY700, CN700 for check)

Sets 4-way valve energization relay (RY700) to ON.


Caution:

Do not connect the coil into the body when perform this operation.

(Note 1) The forced test run with this setting cannot be cancelled by the remote controller in the hydro unit.

Be sure to cancel the operation from the outdoor unit. (Press again SW801 for 1 second)

141


SW804

SW804

SW804

SW804

SW804

SW804

SW804

Operation when press button switch SW801 is pressed

Self-holding valve vacuum operation (Switch to heating cycle)

(RY700, RY701, RY705, CN701 for check)

Sets relay RY700, RY701, and RY705 to ON.

(CN701 Between 1 to 4 Voltage = Approx. 325V)

This function operates for 10 seconds. After that it becomes OFF.

Self-holding valve release operation (Switch to cooling cycle)

Sets relay RY700 to ON.

(CN701 Between 1 to 4 Voltage = Approx. 325V)

This function operates for 10 seconds. After that it becomes OFF.

SV (2-way) valve relay operation (RY702, CN702 for check)

Sets SV valve relay (RY702) to ON.


Heater output relay operation (RY703, CN703 for check)

Sets relay for optional heater (RY703) to ON.


Caution:

Although these controls are available during an operation, basically perform

them when no operation is in progress.

Performing these controls during an operation may cause dangerously rapid pressure change.

External output relay operation (RY704, CN704 for check)

Sets relay for external output (RY704) to ON.


(No operation particularly)

SW804

External output relay operation change

Note:

Do not use this setting.

(Note 1) The forced test run with this setting cannot be cancelled by the remote controller in the hydro unit.

Be sure to cancel the operation from the outdoor unit. (Press again SW801 for 1 second)



11

Replacement of the service PC board

 Setting the jumper wires and DIP switches

Outdoor unit


Service Parts (CDB)

302-6V-045 (MCC-1571)

Parts name

Jumper wire J800~J803

J804~J811

DIP switch SW802

Function

Model switching

Settings

Settings

Setting

Cut these jumper wires according to the following table.

Set these jumper wires to the settings of the PC board before replacement.

Set SW802 to the setting of the PC board before replacement.

Set SW803 to all OFF.

Set SW804 to all OFF.

SW803

SW804

SW805 (Only H8series)

LED indication switching

Special operations for service

Special operations for service

Set SW805 to all OFF

Model switching (J800 to J803)

Since this service PC board is available for several models, cut the jumper wires according to the following table.

If they are not cut correctly, an error code “L10” or “L29” appears on the remote controller and the operation of the air conditioner is disabled.

J 800 J 801 J 802 J 803 Model name

Factory default

HWS-804H-E1

HWS-1104H-E1

HWS-1404H-E1

HWS-P804HR-E1

HWS-P1104HR-E1

* : Characters that indicate the following:

No character -- Standard models

R ----- For with cord heater

:Connected, :Cut

<HWS-P804HR-E1, P1104HR-E1>

SW804

MCC-1571

SW803

J800-J803

SW802



12

How to exchange main parts

WARNING


Because the electrical components are energized with high voltage, always turn off the power breaker before starting to work.

<Check>

Ensure that no water pressure is present when replacing the water circuit (water pump, heater unit, flow switch, etc).

After a repair is complete, perform a test run (after attaching the front panel, upper and lower cabinets, and side cabinet) and check that no abnormality including smoke or abnormal noise occurs. Failure to do so may cause a fire or an electric shock. Place the cabinets before making a test run.

<Watch out for fire>

Observe the following instructions when repairing the refrigerant cycle.

(1) Watch out for surrounding fire. Always put out the fire of stove burner or other devices before starting the repair.

Should the fire fail to be put out, the oil mixed with refrigerant gas could catch fire.

(2) Do not use a welder in a closed room.

A room with no ventilation may cause carbon monoxide poisoning.

(3) Keep away flammable materials.

The materials may catch the fire of a welder.

CAUTION

<Wear gloves>

Wear gloves (

∗) when performing repair.

Failure to do so may cause an injury when accidentally contacting the parts.

∗: Thick gloves such as cotton work gloves

1. Hydro Unit

No.

Exchange parts name

1 Common procedure

Work procedure

Wear gloves when performing the work.

Failure to do so may cause an injury when accidentally contacting the parts.

Front panel

Electrical control box cover (lower)

Electrical control box cover (upper)

1. How to remove

1) Stop the hydro unit operation, and turn off the power breaker.

2) Remove the front panel.

(ST1T Ø4 × 10 6 screws)

3) After unscrew the screws, remove the front panel by pulling it toward you.

4) Remove the electrical control box cover (lower).


5) Disconnect the power source cable and outdoor unit connecting cable from the terminal block.

6) Remove the electrical control box cover (upper).


7) Disconnect the remote controller connecting cable from the CN41 connector of the water heat exchange board.

2. How to attach

1) Connect the remote controller connecting cable to the water heat exchange board.

2) Attach the electrical control box cover (upper).

3) Connect the power source cable and outdoor unit connecting cable to the terminal block, and fix with the cord clamp.

4) Attach the electrical control box cover (lower).

5) Attach the front panel.

Remarks

144


No.


2 Remote controller

Work procedure

1.How to remove

1) Perform the step 1-1.

2) Remove the remote controller from the holder using a flat-blade screwdriver. (Release the stopper.)

3) Disconnect the remote controller cable from the terminal block on the back side of the remote controller.

2.How to attach

1) Attach it in the reverse order of the removal.

Remarks

Remote controller holder

3 Water heat exchanger board

MCC-1511

1. How to remove


2) Disconnect the connectors and lead cables connected to other parts from the water heat exchanger board.

1. Connector

CN100: TB 01 3P Connector (5P: White)

CN101: Trans (3P: White)

CN102: Trans (6P: White)

CN200: Flow switch (3P: Red)

CN201: Pressure switch (2P: White)

CN202: Bimetal thermostat (3P: Yellow)

CN203: TC sensor (2P: Yellow)

CN204: TWI sensor (3P: Brown)

CN205: TWO sensor (2P: Red)

CN206: THO sensor (3P: White)

CN207: Low pressure sensor (2P: Blue)

CN212: Low pressure sensor (4P: White)

CN213: TB 06 4P Terminal block (3P: White)


CN305: TB 01 3P Terminal block (3P: Green)

CN500: PWM control line (6P: Blue)

CN501: Relay board (6P: Yellow)

CN601: Relay 05 (3P: Red)


CN603: Pump (3P: Yellow)

CN604: Relay 06, TB 04 4P Terminal block (7P:

Blue)

CN605: Relay 01, Relay 02 (3P: Yellow)

CN606: Relay 03, Relay 04 (3P: Blue)

2. Round-shape terminal

100: Ground (ST2T Ø4 × 8 1 wire)

NOTE

When removing the connector, release the safety lock of the housing.

3) Release the 6 stoppers of the water heat exchanger board to remove the board.



No.


4 Relay board

MCC-1431

Work procedure

1. How to remove


2) Disconnect the connectors and lead cables connected to other parts from the relay board.

1. Connector


CN02: Water heat exchanger board (5P: White)


NOTE


5 Electric parts assembly

3) Release the 3 stoppers of the relay board to remove the board.

1. How to remove


2) Disconnect the connectors and lead cables connected to other parts from the water heat exchanger board.

1. Connector

CN200: Flow switch (3P: Red)

CN201: Pressure switch (2P: White)

CN202: Bimetal thermostat (3P: Yellow)

CN203: TC sensor (2P: Yellow)

CN204: TWI sensor (3P: Brown)

CN205: TWO sensor (2P: Red)

CN206 THO sensor (3P: White)

CN207: Low pressure sensor (2P: Blue)

CN212: Low pressure sensor (4P: White)

CN603: Pump (3P: Yellow)

Disconnect the heater power source cable (For backup heater and hot water cylinder heater) from the MgSW.

NOTE


3) Remove the fixed screws.

(ST2T Ø4 × 8, 2 screws)

4) Remove the electric parts assembly by pulling it toward you while pulling it upward because the assembly back side has a hook holding structure.

Remarks



No.


6 Side board

Work procedure

1. Side board (Right)

1) Perform the step 1-1-1), 2), 3).

2) Remove the fixed screws of the side board (Right).


3) Remove the fixed screws of the side board (Right) and the manometer fixing board. (ST1T Ø4 × 10, 2 screws)

2. Side board (Left)

1) Remove the fixed screws of the side board (Left).


Remarks

Side board (Right)

Side board (Left)

7 Upper board 1) Perform the step 1-1-1), 2), 3) and step 6.

2) Remove the fixed screws of the upper board.


8 Bottom board 1) Perform the step 1-1-1), 2), 3) and step 6.

2) Remove the fixed screws of the bottom board.


Removal is required if water and refrigerant piping are connected.



No.


9 Expansion vessel

Work procedure

To replace a water circuit part, first close the water supply source valve and the valve of water pipe connected to the hydro unit.

1) Perform the step 1-1, step 5.

2) Remove the fixed band of the expansion vessel.


3) Remove the expansion vessel connection (threepiece flare nut).

When installing the expansion vessel, please attach the waterproof seal at the water connection.

After the expansion vessel replacement repair, open the water supply source valve and water piping valve to pass water through the hydro unit, and check that the expansion vessel connection has no water leakage.

10 Relief valve

11 Air vent valve


1) Perform the step 1-1-1), 2), 3).

2) Remove the quick fastener.

3) Remove the relief valve by pulling it upward.

The relief valve connection uses an O ring for water seal. Be careful not to scratch the O ring; otherwise, water leakage may occur.

After the relief valve replacement repair, open the water supply source valve and water piping valve to pass water through the hydro unit, and check that the relief valve connection has no water leakage.


1) Perform the step 1-1-1), 2), 3), step 6-1.

2) Remove the air vent valve.

After the air vent valve replacement repair, open the water supply source valve and water piping valve to pass water through the hydro unit, and check that the air vent valve connection has no water leakage.

Remarks



No.


12 Pump

Work procedure


1. How to remove

1) Perform the step 1-1-1), 2), 3), step 6-1, and 10.

2) Remove the 2 nuts of the heater connection and the lower side of the pump. (Water pipe wrench is necessary.)

3) Remove the pump fixing board.


4) Remove the nut of the upper part of the pump.

2. How to attach

The pump connection uses a liquid packing for water seal. When replacing the pump, use a packing which was slathered with the liquid gasket.

Part code

37595721

Service parts

Packing

1) Attach a new pump in the reverse order of the removal.

After the pump replacement repair, open the water supply source valve and water piping valve to pass water through the hydro unit, and check that the pump connection has no water leakage.

Remarks



No.


13 Flow switch

Work procedure


1. How to remove

1) Perform the step 1-1 and step 5.

2) Remove the flow switch.

The flow switch connection uses an O ring for water seal. Be careful not to scratch the O ring; otherwise, water leakage may occur.

2. How to attach

1) Attach a new flow switch in the reverse order of the removal.

NOTE

As shown on the right, place a flow sensor parallel to the water heat exchanger inlet pipe so that the wire is place on the right side from the front view.

After the flow switch replacement repair, open the water supply source valve and water piping valve to pass water through the hydro unit, and check that the flow switch connection has no water leakage.

Remarks

14 Manometer


1. How to remove

1) Perform the step 1-1 and step 5 and 6.

2) Remove the manometer.

After the manometer replacement repair, open the water supply source valve and water piping valve to pass water through the hydro unit, and check that the manometer connection has no water leakage.



No.


15 Heater assembly

Work procedure


1. How to remove

1) Perform the step 1-1, step 5, 6, 7, and 11.

2) Remove the nut of the heater connection.

3) Remove the 2 fixed screws of the heater.

4) Pull the heater out upward.

5) Remove the insulator from the heater.

2. How to attach

The heater connection uses a liquid packing for water seal. When replacing the heater, use a packing which was slathered with the liquid gasket.

Part code

37595721

Service parts

Packing

1) Attach a new heater in the reverse order of the removal.

After the heater assembly replacement repair, open the water supply source valve and water piping valve to pass water through the hydro unit, and check that the heater connection has no water leakage.

Remarks

16 TC sensor

TWI sensor

TWO sensor

THO sensor

1. How to remove


2) Take the sensor out.

TC sensor

Sensor diameter: 6

Tube color: Black


THO sensor

Sensor diameter: 6

Tube color: Gray

TWO sensor

Sensor diameter: 6

Tube color: Red

TWI sensor

Sensor diameter: 4

Tube color: Blue


No.


17 Water heat exchanger assembly

Work procedure

• Close the water piping source valve and the valve of water pipe connected to the hydro unit, and then remove the refrigerant and water piping.

• Perform refrigerant recovery with the outdoor unit.

• Disconnect all the power source cable, outdoor unit connection cable, and cylinder connection cable.

1. How to remove

1) Perform the step 1-1, step 5, 6, and 8.

2) Remove the water pipe fixing board.


3) Remove the refrigerant piping fixing board.


4) Remove the nut of the heater connection.

5) Remove the fixed screws of the electrical control box fixing board.


6) Remove the side reinforcing board (left).

(ST2T Ø4 × 8, 6 screws) 3 for inside, 3 for outside

7) Remove the water heat exchanger fixing band.


8) Remove the water heat exchanger assembly.

The heater connection uses a packing for water seal. Be careful not to scratch the packing; otherwise, water leakage may occur.

2. How to attach

1) Attach a new water heat exchanger assembly in the reverse order of the removal.

2) Restore all piping and wiring as in the original state, and check that there is no water or refrigerant leakage.

• After the water heat exchanger assembly replacement repair, open the water supply source valve and water piping source valve to pass water through the hydro unit, and check that the connection has no water leakage.

• After connecting the refrigerant pipe, check that the connection has no refrigerant leakage.

Remarks

Electrical control box fixing



2. Outdoor Unit

HWS-P804HR-E1, P1104HR-E1

No.


1 Common procedure

Work procedure

NOTE

Wear gloves when performing the work.

Failure to do so may cause an injury when accidentally contacting the parts.

1. How to remove

1) Stop the operation by remote controller and turn off the breaker.

2) Remove the front panel.

(Hex Ø4 × 10, 2 screws)

• After unscrewing the screws, remove the front panel while pulling it downward.

3) Disconnect the power source cable and connecting cables between hydro and outdoor from the cord clamp and terminals.

4) Remove the top board.


2. How to attach

1) Attach the top board.


2) Connect the power source cable and connecting cables between indoor and outdoor to the terminal, and fix them with the cord clamp.

NOTE

The power source cable and connecting cable between hydro and outdoor units must be fixed along the connecting piping by using a cable tie so that the cables do not contact the compressor, gas side valve, gas side piping and outlet pipe.

3) Attach the front panel.


Remarks

Front panel

Top board



No.


2 Outlet cabinet

3 Side cabinet

Work procedure

How to remove


2) Remove the screws of the outlet cabinet and parting board.


3) Remove the screws of the outlet cabinet and bottom board.


4) Remove the screws of the outlet cabinet and motor base.


5) Remove the screws of the outlet cabinet and heat exchanger.


6) Remove the screws of the outlet cabinet and fin guard.


Remarks

Heat exchanger

Outlet cabinet

Motor base Paring board

Fin guard


2) Remove the screws that fixes the inverter assembly and the side cabinet.


3) Remove the screws of the side cabinet and valve fixing board.


4) Remove the screws of the side cabinet and piping panel (back).


5) Remove the screws of the side cabinet and bottom board.


6) Remove the screws of the side cabinet and fin guard (heat exchanger).


7) Remove the side cabinet while shifting it upward

(inverter hook).

Inverter assembly Side cabinet

Valve fixing board



No.


4 Electric parts replacement

Work procedure

1. Control board


Remarks

WARNING

For 1 minute after the power is turned off, do not disassemble the inverter to prevent an electric shock.

Control board


Fan motor (upper)

Reactor lead connector A

2) Remove the connector connected to the control

(Hydro power source, temperature sensor, electric control valve coil, 4-way valve coil, compressor case thermostat, fan motor)

* Remove the connector by releasing the lock in the housing.

Fan motor (lower)

Temperature sensor

3) Remove the lead cable connected to the control board.

Compressor lead U: CN200 Red

V: CN201 White

W: CN202 Black

Reactor lead connector A connector B

Motorized control coil

Compressor lead

Earth wire

4-way valve coil

Indoor power source

Reactor lead connector B

4) Remove the earth wire of the control board.

(Truss B tight screw Ø4 × 6, 1 screw)

5) Remove the fixed screws of the control board.

(Collar screw for fixing element Ø3 × 16, 9 screws,

Pan S-tight screw for fixing the board Ø3 × 20, 1 screw)

6) Remove the control board.

(Supporter 5 positions)

Note) Removing the control board may be difficult due to the heat release grease for the heat sink.

7) Attach a new control board.

NOTE

• Be careful for not taking the compressor lead V:

CN201 White for the reactor lead CN05 or 06

White.

(The compressor lead has a transparent sleeve at its ring terminal. The reactor lead ring terminal does not have sleeve.)

• Be sure to attach the insulating sheet.

(Applying beforehand a bit of heat release grease to the back side of the insulating sheet can easily paste the sheet to the heat sink.)

Screw for fixing board

Screw for fixing element

(9 positions)

Control board

Insulating sheet

Hear release grease



No.


4 Electric parts replacement

Work procedure

2. Reactor


2) Remove the reactor lead connected to the control board.

Reactor lead connector A, B

3) Cut the binding tie that binds the compressor leads and fan motor leads.

4) Remove the reactor.

(Truss B tight screw Ø4 × 6, 4 screw)

5) Attach a new reactor.

NOTE

Be sure to bind the removed binding tie by using the commercially available binding tie.

Make sure that the fan motor lead and the reactor body do not contact each other.

Remarks

Binding tie

(Compressor lead)

Control board

Reactor lead connector A

Binding tie

(Compressor lead,

Reactor lead)

Fan motor lead

Reactor body

Binding tie

(Fan motor lead,

Reactor lead,

Compressor lead)



No.


5 Fan motor

Work procedure


2) Remove the fan motor and the flange nut that fixes the propeller fan.

• To loosen the flange nut, turn it clockwise.

(Turn it counter clockwise for tightening.)

3) Remove the propeller fan.

4) Remove the connector for fan motor from the inverter. (control board)

(Remove the ferrite core of the lower fan motor to use it again for a new fan motor.)

5) Remove the fan motor lead from the fan motor lead fixing rubber on the through hole of the parting board.

6) Remove the fixed screws (4 for each) while holding the fan motor so that it does not drop.

* Notes in assembling fan motor

• Tighten the flange nut in 4.95 N•m (50 kgf•cm).

• To prevent the fan motor lead from contacting the propeller fan, adjust the length of fan motor lead fixing rubber so that it does not slack.

Attach the fan motor lead fixing rubber to the parting board so that the projection part is placed on the refrigerant cycle side.

• Make sure that the reactor body and the fan motor lead do not contact each other.

• Be sure to bind the removed binding tie by using the commercially available binding tie.

• Be sure to re-attach the ferrite core of the lower fan motor. (Fix this with a commercially available binding tie.)

Propeller fan

Remarks

Turn it right to loosen

Flange nut

Propeller fan

Fan motor

Fan motor connector (upper)

Fan motor connector (lower)

Fan motor ferrite core (lower)

Fan motor lead fixing rubber

NOTE

Fix the fan motor lead to the motor base using a metal tie so that the fan motor lead does not contact the propeller fan.

Projection / Refrigerant cycle side

Fan motor lead fixing rubber

Projection / Refrigerant cycle side


157

Fan motor


No.


6 Compressor

Compressor lead

Work procedure

1. Remove defective compressor

1) Perform refrigerant gas recovery.


3) Remove the piping panel (Front).

Remove screws of the piping panel (Front) and bottom board.


Remove screws of the piping panel (Front and

Back).


4) Remove the piping panel (Back).

Remove screws of the piping panel (Back) and bottom board.


5) Remove the soundproofing board. (Upper, Inward winding, Outward winding)

6) Remove the compressor terminal cover, and then remove the compressor lead and compressor case thermostat.

7) Remove the TD sensor fixed to the discharge piping.

8) Remove the compressor lead. (Leave the ferrite core attached to the electrical control box.)

Control board U: CN200 Red

V: CN201 White

W: CN202 Black

9) Remove the outlet and suction pipes connected to the compressor by using a burner.

Piping panel (Front)

Piping cover

Binding tie

(for heat resistance)

Piping panel (Back)

TD sensor

Compressor lead

Control board

Remarks


Compressor lead

WARNING

When removing the piping by burning the solder, take enough care for a fire going off at the moment the wax melts if oil remains inside the piping.

Compressor lead

NOTE

Do not make fire flame contact with the 4-way valve and pulse motor valve.

(This may cause an operation failure.)

Ferrite core

10) Pull out the discharge and suction pipes of the refrigerant cycle upward.

11) Remove the compressor nuts that fix the compressor to the bottom board. (3 nuts)

12)Pull the compressor out toward you.

NOTE

The compressor weighs 20 kg or more.

Two people should be required to handle it.

Remove

(Outlet pipe)

Remove

(Suction pipe)


158

Compressor nut

(3 nuts)


No.


6 Compressor

Compressor lead

Work procedure

2. Attach the compressor

1) Attach the compressor in the reverse order of the removal.

Compressor lead

Remarks

Wind ferrite core with compressor lead for 4 times

NOTE

• Be sure to replace the compressor lead after the compressor replacement. (Compressor lead spare parts code: 43160591)

At this time, wind the ferrite core with the compressor lead for 4 times.

• Attach the soundproofing board (Inward winding,

Outward winding), as shown in the right figure, through between the compressor and between the piping and parting board.

• Fix the TD sensor with a commercially available heat resistant binding tie through the piping cover so that the sensor do not contact the discharge pipe.

Ferrite core

0 to 50

(Compressor lead positioning standard)

Place soundproofing board (Outward winding) through between suction pipe and header pipe

Overlap soundproofing board

(Outward winding) at this position

Header pipe

3) Vacuuming

1) Connect the vacuum pump to the charge port and check joint of the gas piping valve to operate the vacuum pump.

2) Perform vacuuming until the vacuum low pressure gauge shows 1(mmHg).

NOTE

Open fully the pulse motor valve before vacuuming.

With the valve closed, vacuuming between the outdoor unit liquid valve and the pulse motor valve may fail.

Suction pipe Discharge pipe

Overlap soundproofing board (Inward winding) at this position through between compressor, outlet pipe, and suction pipe

Do not make space between soundproofing boards

(Upper and Outward winding)

Soundproofing board (Upper)

How to make pulse motor valve forcible full open

• Turn on the electric leakage breaker.

• Set the SW804 dip switch 1 and 3 on the outdoor unit control board to ON.

• Press SW801 on the outdoor unit control board for 1 second or longer.

• After pressing SW801 for 1 second or longer, turn off the electric leakage breaker within

2 minutes.

Rivet

4. Charge refrigerant

1) Add refrigerant whose amount is defined according to the piping length from the valve charge port. (HWS-P804HR-E1, P1104HR-E1 :

2.7 kg)

Make the other end of the line go through under the rivet

Soundproofing board

(Outward winding)

SW804 SW801



No.


Work procedure

7 Pulse motor valve coil 1. How to remove


2) Remove the coil from the pulse motor valve body by pulling upward while rotating the coil.

2. How to attach

1) Fix the coil by exactly adjusting the coil positioning projection to the recess of the pulse motor valve body.

Remarks

Recess

Pulse motor valve body

8 Fan guard

Positioning projection

Motorized control valve coil

1. How to remove


NOTE

Perform a replacement work on cardboard or cloth to prevent the product from being damaged.

Fan guard Bellmouth Outlet cabinet

2) Remove the outlet cabinet and put with the fan guard side down.

3) Release the hooks (8 positions) of the fan guard.

2. How to attach

1) Press the hooks (8 positions) with hands from the front side to fix them.

NOTE

Check that all the hooks are fixed to the given positions.

Hooks



No.


Work procedure

9 Bottom plate heater 1. Detachment

1) Recover the refrigerant. (See 15-1. Refrigerant recovery control)

Drain the water in the hydro unit before refrigerant recovery.

2) Execute steps 1-1, 2, and 3.

3) Detach the two fin guards.

(9 pcs. hex screws Ø4 × 10)

4) Detach the two piping panels.


5) Disconnect the 3” and 5” refrigerant pipes.

6) Disconnect the fan motor connectors from the PC board (one for the upper fan and one for the lower fan. Cut the tie-lap bands (6) location)

7) Detach the fan motor base.


8) Remove the insulation mats (One above the compressor and two around it).

9) Remove the three nuts fixing the compressor.

10) Remove the screw fixing the partition plate and bottom plate.

(1 pcs. ST1T Ø4 × 8)

11) Remove the screws fixing the heat exchanger and bottom plate.

(2 pcs. ST1T Ø4 × 8)

12) Disconnect the connector of the bottom plate heater from the CDB PC board.

13) Lift the main unit up and detach the bottom plate.

14) Replace the heater.

(21 pcs. ST2T Ø4 × 8 and 2 pcs. hex screw Ø5 ×

10)

3)

6)

2. Attachment

Execute the opposite of steps 1)-13) in reverse order.

Note for step 10

The partition plate has a cutout for the heater.

Connect the heater cord through the cutout when reassembling the unit.

11)

8)

9)

10)

Remarks

4)

Fan motor connection

7)

Cut out

13)

Lift up the main unit

14)

Bottom plate heater.


161

The connector must get close to this screw.

Only this cord clamp must be attached downward-facing.


13

For cooling installation

If user install the Hydro unit to place humidity location or high humidity region, also user use cooling mode, please attach moisture- proof parts which parts are contained in Hydro unit.

Hydro unit


• Stick the optional insulator for cooling to the bottom of the Hydro Unit.


14

Periodic inspection items

For a long-term safe operation of this equipment, perform periodic inspection and parts replacement.

<Inspection items>

Hydro unit

(HWS-P804**-E1, P1104**-E1)

1. Insulation measurement (Power source circuit /

Heater circuit)

2. Power source measurement (No-load voltage)

3. Operation check

4. Refrigerant leakage / Water leakage inspection

5. Water heat exchanger inspection (Internal dirt and clogging)

6. Inlet / Outlet water temperature measurement

Frequency

Annually

Periodic inspection details

Insulation measurement with a mega tester

Annually

Annually

Annually

Annually

Electronic voltage measurement: 220-230 V ±10%

Hot water supply / Heating / *-Cooling operation check with remote controller

Visual inspection and check with a leak tester: No leakage must be found

Checking for water dirtiness in a closed cycle, Cleaning

7. Circulation pump inspection

8. Air vent valve inspection

9. Expansion vessel

10. Heater assembly

11. Flow switch

12. Manometer

13. Safety valve

14. Water heat exchanger control board, Terminal block

Annually

Annually

Annually

Annually

Annually

Annually

Annually

Annually

Annually

Temperature measurement: Temperature measurement during an operation

No leakage or abnormal noise must be found (Replacement every 10 years: Charged)

Water leakage, Air vent

Visual check for charge pressure abnormality, water leakage, or corrosion

Check for appearance damage, deformation, or loose terminal

Operation check while running

Water leakage, water pressure check

Water leakage, Appearance check, Drainage check

Check for loose connector and connecting terminal

Outdoor unit

(HWS-P804HR-E1, P1104HR-E1)

1. Insulation measurement (Power source circuit /

Compressor)

2. Power source measurement (No-load voltage / Rated operation)

3. Operation frequency (Outdoor unit operation check)

Frequency

Annually

Annually

Annually

4. Refrigerant leakage inspection

5. Air heat exchanger inspection (Dirt and clogging)

6. Fan inspection (Scratch, damage)

7. Cycle parts

(Compressor, 4-way valve, Pulse motor valve)

8. Inverter control board, Terminal block

Annually

Annually

Annually

Annually

Annually

Annually



Electronic voltage measurement:

220-230 V ±10% (Single phase type)

Frequency check by rated operation (See 10-13 (See

page 133))

Visual inspection and check connection with a leak tester:

No leakage must be found

Visual inspection, Clear clogging

Check for scratches or damages to the fan or abnormal motor sound

Operation check by trial run


Hot water cylinder

(HWS-150CSHM3-E(-UK),

210CSHM3-E(-UK), 300CSHM3-E(-UK))

1. Insulation measurement (Power source circuit)

2. Power source measurement (No-load voltage)

3. Water leakage inspection

4. Terminal block

5. Heater assembly

6. Temperature, Pressure relief valve (Specification for

UK only)

Frequency

Annually

Annually

Annually

Annually

Annually

Annually



Electronic voltage measurement: 220-230 V ±10%

Visual inspection for leakage: No leakage must be found


Check for appearance damage, deformation, or loose terminal

Drainage check

163


15

Part exploded view, part list

z

Hydro Unit



E-P-Box Assembly (Hydro Unit)

220

223

235

234

235

233

240 239

224

221

230

228

229

232

225

227

231

226

222



206

230

231

232

233

226

227

228

229

234

235

236

237

238

239

240

219

220

221

222

216

216

217

218

223

224

225

210

211

212

213

207

207

208

209

213

213

215

201

202

203

204

205

206

Safety

Ref. No.

37500802

37500800

37500801

37500835

37566708

37546874

37546875

43160297

43060059

43160565

43160566

4306A130

43160576

43160579

43160561

43050425

43150320

43160568

37517875

37517876

43160571

43F6A156

37551735

37551737

43F32441

37595721

37595720

3026V054

4316V338

43152401

43158187

43154156

43054107

37541737

37541738

37542710

37547757

37519776

37547769

37543706

37545713

37545714

37545715

37551736

Part No.

Description

CABINET, FRONT

PLATE, UP

PLATE, SIDE

PLATE, DN, ASSY

REMOTE CONTROLLER

PIPE ASSY, WATER HEAT

EXCHANGER

PIPE ASSY, WATER HEAT

EXCHANGER

PUMP, WATER, ASSY

PUMP, WATER, ASSY

VESSEL, EXPANSION

VALVE, PRESSURE RELIEF

FASTENER, QUICK

VALVE, AIR VENT

METER, PRESSURE

HEATER ASSY

HEATER ASSY

HEATER ASSY

SENSOR, LOW PRESSURE

SWITCH, FLOW

SWITCH, FLOW

NIPPLE, DRAIN

PACKING, ASSY

RING, O, ASSY

PC BOARD ASSY

PC BOARD ASSY

CONTACTOR, MAGNETIC

TRANSFORMER

RELAY, LY-1F

RELAY, LY1F

FUSE

FUSE, HOLDER

TERMINAL BLOCK, 3P, 20A




TERMINAL

TERMINAL, 4P

SENSOR ASSY, SERVICE


TERMINAL, 2P

MARK, ESTIA

MARK, TOSHIBA FOR ESTIA

FUSE, HOLDER 15A 250V

FUSE (ET), 3.15A AC250V

HWS-

P1104XW

HM3-E1

1

Number of pieces per unit

HWS-

P1104X

WHT6-E1

HWS-

P1104X

WHT9-E1

HWS-

P804XW

HM3-E1

HWS-

P804XW

HT6-E1

1 1 1 1

1

1

1

2

1

2

1

1

1

2

1

1

1

2

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

4

4

1

1

1

1

1

1

3

2

1

1

1

2

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

1

2

1

6

6

1

1

1

1

1

1

3

2

1

1

1

2

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

1

2

1

8

8

1

1

1

1

1

1

3

2

1

1

1

2

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

4

4

3

2

1

2

2

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

6

6

3

2

1

2

2

1

1

3

1

1

1

2

1

1

1

1

1

HWS-

P804XW

HT9-E1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

8

8

3

2

1

2

2

1

1

3

1

1

1

2

1

1

1

1

1

1

1

166


Outdoor Unit (HWS-P804HR-E1, P1104HR-E1)



Safety

Ref. No.

030

031

032

033

034

035

036

025

026

027

028

029

020

021

022

023

024

037

052

053

054

055

056

057

058

015

016

017

018

019

010

011

012

013

014

005

006

007

008

009

001

002

003

004

Part No.

43109422

43120244

43122113

4312C100

43146676

4314N092

37546878

43146724

43148170

37546876

37546877

4314N023

37547768

4314N025

4314Q031

4314Q032

43160591

43100437

43100438

43100439

43100440

43100441

43100442

37500804

43107274

43107275

43107276

43F19904

43F32441

43041794

43F47246

43F47669

43049739

43F50407

43F63317

43F97212

43194029

37517884

4314N038

43146711

43160571

43F6A156

37545716

37550762

Description

HOLDER, SENSOR (TS)

NIPPLE, DRAIN

COMPRESSOR, DA422A3F-25M

BONNET, 3/8 IN

NUT, FLANGE

CUSHION, RUBBER

THERMOSTAT,BIMETAL

HOLDER,THERMOSTAT

NUT

PANEL, FRONT, PIPING

PANEL, BACK, PIPING

PANEL, FRONT

PLATE, ROOF

PANEL, SIDE

PANEL, AIR OUTLET

BASE ASSY

GUARD, FIN, SIDE

GUARD, FIN, BACK

HANGER

GUARD, FAN

FAN, PROPELLER, PB521

BELL MOUTH

MOTOR, FAN, ICF-280-A100-1 (A)

JOINT,CHECK

VALVE, PACKED, 9.52

VALVE, 4-WAY, STF-H0404

VALVE, BALL, SBV-JA5GTC-1, R0HS

ACCUMULATOR ASS'Y

CONDENSER ASSY, DOWN

CONDENSER ASSY, UP

VALVE, PLUS, MODULAING, UKV-25D100

COIL, VALVE, 4-WAY, STF-H 01AP1880A1

COIL, PMV, UKV-A038

STRAINER

STRAINER

LEAD ASSY, COMPRESSOR

BONNET, 5/8 IN

MARK, TOSHIBA FOR ESTIA

COIL, SOLENOID, AC220-2 40 50HZ

VALVE, 2-WAY

FUSE, HOLDER, 15A 250V

FUSE(ET), 3.15A, AC250V

HEATER ASSY

SENSOR ASSY, PRESSURE

168


1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

2

1

1

1

1

1

3

1

1

1

1

1


HWS-P804HR-E1 HWS-P1104HR-E1

3 3

1

1

1

1

1

1

1

1

2

3

3

2

3

1

1

3

1

1

1

1

3

1

1

1

1

1

2

1

1

1

1

1

1

2

1

1

1

1

2

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

2

1

Inverter Assembly (HWS-P804HR-E1, P1104HR-E1)

704

709

710

711

705

703

701


11 22 33

707

706

708

702


Safety

Ref. No.

705

706

707

708

709

701

702

703

704

710

711

Part No.

43050425

43F63325

43150319

43158190

43160565

43160581

43160589

43163055

43163059

43163060

3026V053

Description


HOLDER, SENSOR (TE)


REACTOR


TERMINAL

FUSE

HOLDER, SENSOR

SPACER, BUSH

SPACER, COLLAR

PC BOARD ASSY, MCC-1571


HWS-P804HR-E1 HWS-P1104HR-E1

3 3

1

2

2

1

2

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1



Copyright © 2014 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.


"hot water supply" and "heating"

AIR TO WATER HEAT PUMP

Service Manual

Model name:

Hydro unit Outdoor unit

HWS-P804XWHM3-E1(TR)

HWS-P804XWHT6-E1(TR)

HWS-P804XWHT9-E1

HWS-P1104XWHM3-E1(TR)

HWS-P1104XWHT6-E1(TR)

HWS-P1104XWHT9-E1(TR)

HWS-P804HR-E1(TR)

HWS-P1104HR-E1(TR)

Contents

Safety precautions

Refrigerant (R410A)

2-1. Safety during installation and service

2-2. Installing refrigerant pipe

2-2-1. Steel pipe and joint

The minimum wall thickness of socket joints

2-2-2. Processing of piping materials

2-3. Tools

2-3-1. Necessary tools

2-4. Recharging of refrigerant

[Cylinder with siphon]

[Cylinder without siphon]

2-5. Brazing of pipes

2-5-1. Materials of brazing

2-5-2. Flux

2-5-3. Brazing

Specifications

Outside drawing

4-1. Hydro unit

4-2. Outdoor unit

4-3. Hot water cylinder

Wiring diagram

5-1. Hydro unit

5-2. Outdoor unit

5-3. Hot water cylinder unit

TB03 (230 V)

Key electric component rating

6-1. Hydro unit

6-2. Outdoor unit

6-3. Hot water cylinder unit

6-4. Water heat exchange control board

6-5. Outdoor control board

Refrigeration cycle / Water system diagram

7-1. Water system diagram

7-2. Refrigeration cycle system diagram

Operational description

(Usual)

(when TO sensor fails)

Method of defect diagnosis

9-1. Matters to be confirmed first

9-1-1. Check the power supply voltage

9-1-2. Check for any miswiring of the connection cables between the hydro unit and the outdoor unit

9-1-3. About the installation of the temperature sensor

9-2. Non-defective operation (program operation) … No fault code display appears.

9-3. Outline of the determination diagram

9-3-1. Procedure of defect diagnosis

9-3-2. How to determine from the check code on the remote controller

9-3-3. How to cancel a check code on the remote controller

9-3-4. How to diagnose by error code

9-4. Diagnosis flow chart for each error code

9-4-1. Hydro unit failure detection

(Approx. 3 mins) (Approx. 1 mins)

(Power on) Handy remote "Setting" controller displays disappears

"Setting"

Reboot

(reset)

(Repeat)

9-4-2. Outdoor unit failure detection

9-4-3. Temperature sensor, temperature-resistance characteristic table

9-5. Operation check by PC board switch

9-5-1. Operation check mode

9-6. Brief method for checking the key components

9-6-1. Hydro unit

9-6-2. Outdoor unit

Hydro unit and outdoor unit settings

Press the SET and TEST and SELECT buttons at the same time for 4 seconds or longer.