Indoor Unit Outdoor Unit WH-SDC03E3E5 WH

Order No: PAPAMY1209153CE
Indoor Unit
WH-SDC03E3E5
WH-SDC05E3E5
Outdoor Unit
WH-UD03EE5
WH-UD05EE5
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the products dealt with in this service information by anyone else could result in serious injury or death.
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
© Panasonic Appliances Air-Conditioning Malaysia
Sdn. Bhd. 2012. Unauthorized copying and distribution
is a violation of law.
TABLE OF CONTENTS
1. Safety Precautions .............................................3
14. Servicing Mode ................................................ 67
14.1
14.2
14.3
14.4
14.5
14.6
2. Specifications .....................................................5
2.1
2.2
WH-SDC03E3E5 WH-UD03EE5 ..................5
WH-SDC05E3E5 WH-UD05EE5 ..................8
3. Features.............................................................11
4. Location of Controls and Components..........12
4.1
4.2
Indoor Unit ...................................................12
Outdoor Unit.................................................17
15. Maintenance Guide.......................................... 69
16. Troubleshooting Guide................................... 71
5. Dimensions .......................................................18
5.1
5.2
16.1 Refrigeration Cycle System ........................ 71
16.2 Relationship between the Condition of the
Air-to-Water Heatpump Indoor and Outdoor
Units and Pressure and Electric Current .... 72
16.3 Breakdown Self Diagnosis Function ........... 73
16.4 Error Codes Table....................................... 74
16.5 Self-diagnosis Method ................................ 76
Indoor Unit ...................................................18
Outdoor Unit.................................................19
6. Refrigeration and Water Cycle Diagram ........20
7. Block Diagram ..................................................22
8. Wiring Connection Diagram ............................23
8.1
8.2
17. Disassembly and Assembly Instructions ... 109
Indoor Unit ...................................................23
Outdoor Unit.................................................24
17.1
17.2
17.3
17.4
17.5
17.6
To Remove Front Plate............................. 109
To Remove Cabinet .................................. 109
To Remove Pressure Gauge .................... 110
To Remove Control Panel ........................ 110
To Remove RCCB .................................... 111
To Remove Transformer and Electronic
Controller Board........................................ 111
17.7 To Remove Pressure Relief Valve,
Flow Switch, Water Pump and Bottle
Complete................................................... 112
9. Electronic Circuit Diagram ..............................25
9.1
9.2
Indoor Unit ...................................................25
Outdoor Unit.................................................26
10. Printed Circuit Board .......................................27
10.1 Indoor Unit ...................................................27
10.2 Outdoor Unit.................................................29
11. Installation Instruction.....................................30
11.1
11.2
11.3
11.4
How to Take Out Front Plate ...................... 67
How to Take Out Side Cabinet ................... 67
Test Run ..................................................... 67
Proper Pump Down Procedure................... 67
How to Adjust Water Flow Rate.................. 68
Expansion Vessel Pre Pressure
Checking ..................................................... 68
18. Technical Data ............................................... 114
Select the Best Location ..............................30
Indoor/Outdoor Unit Installation Diagram ....30
Indoor Unit ...................................................31
Outdoor Unit.................................................36
18.1
18.2
18.3
18.4
12. Operation and Control .....................................39
Operation Characteristics ......................... 114
Heating Capacity Table............................. 122
Cooling Capacity Table............................. 122
Hydraulic Pump Performance................... 123
19. Exploded View and Replacement Parts
List .................................................................. 124
12.1 Basic Function .............................................39
12.2 Water Pump .................................................52
12.3 Pump Down Operation ................................53
12.4 Flow Switch..................................................53
12.5 Force Heater Mode Operation .....................53
12.6 Indoor Unit Safety ........................................54
12.7 Auto Restart Control ....................................54
12.8 Indication Panel ...........................................54
12.9 Indoor Back-Up Heater Control ...................55
12.10 Tank Booster Heater Control .......................55
12.11 Base Pan Heater Control (Optional) ............56
12.12 Three Way Valve Control.............................56
12.13 Sterilization Mode ........................................57
12.14 Quiet Operation............................................57
12.15 Anti Freeze Control ......................................57
12.16 Solar Operation (Optional)...........................58
12.17 External Room Thermostat Control
(Optional) .....................................................61
12.18 Two Ways Valve Control .............................62
19.1 Indoor Unit ................................................ 124
19.2 Outdoor Unit.............................................. 126
13. Protection Control............................................63
13.1 Protection Control for All Operations ...........63
13.2 Protection Control for Heating Operation ....65
13.3 Protection Control for Cooling Operation.....66
2
1. Safety Precautions
š
š
š
š
Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.
Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating and main
circuit for the model installed.
The caution items stated here must be followed because these important contents are related to safety. The
meaning of each indication used is as below. Incorrect installation or servicing due to ignoring of the instruction
will cause harm or damage, and the seriousness is classified by the following indications.
WARNING
This indication shows the possibility of causing death or serious injury.
CAUTION
This indication shows the possibility of causing injury or damage to properties.
The items to be followed are classified by the symbols:
This symbol denotes item that is PROHIBITED from doing.
š
Carry out test run to confirm that no abnormality occurs after the servicing. Then, explain to user the operation,
care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for
future reference.
WARNING
1. Do not modify the machine, part, material during repairing service.
2. If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.
3. Do not wrench the fasten terminal. Pull it out or insert it straightly.
4. Engage dealer or specialist for installation and servicing. If installation of servicing done by the user is defective, it will cause water leakage,
electrical shock or fire.
5. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire.
6. Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage,
refrigerant leakage, fire or electrical shock.
7. Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done,
the set will drop and cause injury.
8. Do not install outdoor unit near handrail of veranda. When installing outdoor unit at veranda of high rise building, child may climb up
to outdoor unit and cross over the handrail and causing accident.
9. For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single outlet
must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.
10. This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone.
Otherwise, it may cause electric shock in case equipment breakdown or insulation breakdown.
11. Do not use joint cable for indoor/outdoor connection cable. Use specified indoor/outdoor connection cable, refer to Installation Instructions
CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force
will be acted on the terminal. If connection or fixing is not perfect, it will cause heat up or fire at the connection.
12. When install or relocate Air to Water Heatpump indoor/outdoor unit, do not let any substance other than the specified refrigerant, eg. air etc.
mix into refrigerant cycle (piping). Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.
13. This is a R410A model. When connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such same may cause
abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only R410A refrigerant.
Thickness of copper pipes used with R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm. It is desirable
that the amount of residual oil is less than 40 mg/10 m.
14. During installation, install the refrigerant piping properly before run the compressor. Operation of compressor without fixing refrigeration piping
and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.
15. During pump down operation, stop the compressor before remove the refrigeration piping. Removal of refrigeration piping while compressor is
operating and valves are opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion,
injury etc.
16. After completion of the installation servicing confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant
contacts with fire.
17. Ventilate the room if there is refrigerant gas leakage during operation. Extinguish all fire sources if present. It may cause toxic gas when the
refrigerant contacts with fire.
18. Only use the supplied or specified installation parts, else, it may cause unit vibrate loose, water/refrigerant leakage, electrical shock or fire.
3
WARNING
19. The unit is only for use in a closed portable water system. Utilization in an open water circuit or non-portable water circuit, may lead to
excessive corrosion of the water piping and risk of incubating bacteria colonies, particularly Legionella, in water.
20. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
21. Do not dismantle refrigerant piping using pipe wrench. It might deform the piping and cause the unit to malfunction.
22. Select a location where in case of water leakage, the leakage will not cause damage to other properties.
23. Do not locally purchase electrical parts of the product for the purpose of installation, service, maintenance and etc. They might cause
electrical shock or fire.
24. Do not branch the power from terminal block to heater tape. Overloaded terminal block will cause electrical shock or fire.
25. Installation or servicing work. It may need two people to carry out the installation or servicing work.
26. Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other
electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.
27. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may
break and cause refrigerant gas leakage.
CAUTION
1. Do not install the air-to-water heatpump indoor unit and outdoor unit at place where leakage of flammable gas may occur. In case
gas leaks and accumulates at surrounding of the unit, it may cause fire.
2. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the
furniture.
3. It may need two persons to carry out the installation work. The weight of indoor/outdoor unit might cause injury if carried by one person.
4. Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.
5. Select an installation location which is easy for maintenance.
6. Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F - 70°F (30°C - 40°C) higher. Please use a
high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
Pb free solder will tend to splash when heated too high (about 1100°F/600°C).
7. Power supply connection to the indoor unit.
1. Power supply point should be in easily accessible place for power disconnection in case of emergency.
2. Must follow local national wiring standard, regulation and this installation instruction.
3. Strongly recommended to make permanent connection to a circuit breaker. It must be a double pole switch with a minimum 3.0mm gap.
- Use approved 30A circuit breaker for power supply 1
- Use approved 30A circuit breaker for power supply 2
- Use approved 15A/16A circuit breaker for power supply 3
8. Do not release refrigerant during piping work for installation, servicing, re-installation and during repairing a refrigeration parts. Take
care of the liquid refrigerant, it may cause frostbite.
9. Do not install this appliance in a laundry room or other high humidity location. This condition will cause rust and damage to the unit.
10. Make sure the insulation of power supply cord does not contact to hot part (i.e. refrigerant piping, water piping) to prevent from
insulation failure (melt).
11. Do not sit, step or place anything on the unit, you may fall down accidentally.
12. Do not touch the sharp aluminum fins or edges of metal parts.
If you are required to handle sharp parts during installation or servicing, please wear hand glove.
Sharp parts may cause injury.
13. After installation, check the water leakage condition in connection area during test run. If leakage occur, it will cause damage to other
properties.
14. The unit described in this manual is designed for use in a closed water system only. Utilization in an open water circuit may lead to
excessive corrosion of the water piping.
4
2. Specifications
2.1
WH-SDC03E3E5 WH-UD03EE5
Item
Performance Test Condition
Cooling Capacity
Unit
Outdoor Unit
EN 14511
Condition
(Ambient/Water)
kW
10900
kcal/h
2750
W/W
3.08
kcal/hW
Condition
(Ambient/Water)
kW
2.64
A7W35
A2W35
3.20
3.20
BTU/h
10900
10900
kcal/h
2750
2750
Heating COP
Noise Level
Air Flow
W/W
5.00
3.56
kcal/hW
Condition
(Ambient/Water)
dB (A)
4.30
3.06
A35W7
A7W35
A2W35
Cooling: 47
Heating: 47
—
Power Level dB
Cooling: 65
Heating: 65
Cooling: 38.1 (1350)
Heating: 31.9 (1130)
Expansion Valve
—
3
3
m /min (ft /min)
Refrigeration Control Device
Refrigeration Oil
cm
Refrigerant (R410A)
Dimension
3
FV50S (450)
kg (oz)
1.20 (42.4)
Height
mm (inch)
622 (24-1/2)
Width
mm (inch)
824 (32-15/32)
Depth
mm (inch)
298 (11-24/32)
kg (lbs)
39 (86)
Net Weight
Pipe Diameter
3.20
BTU/h
Cooling EER
Heating Capacity
A35W7
Liquid
mm (inch)
6.35 (1/4)
Gas
mm (inch)
12.70 (1/2)
Standard Length
m (ft)
7 (23.0)
Pipe Length Range
m (ft)
3 (9.8) ~ 15 (49.2)
I/D & O/D Height Difference
m (ft)
5 (16.4)
Additional Gas Amount
Refrigeration Charge Less
Compressor
g/m (oz/ft)
20 (0.2)
m (ft)
10 (32.8)
Type
Hermetic Motor
Motor Type
Rated Output
Fan
Brushless (4-poles)
kW
0.90
Type
Propeller Fan
Material
PP
Motor Type
Input Power
W
—
Output Power
W
40
Cooling: 950
Heating: 800
Aluminium (Pre Coat)
Fan Speed
Heat Exchanger
DC (8-poles)
rpm
Fin material
Fin Type
Corrugated Fin
Row × Stage × FPI
Size (W × H × L)
2 × 28 × 17
mm
36.4 × 588 × 827.7 : 856.3
5
Item
Power Source (Phase, Voltage, Cycle)
Input Power
Unit
ø
Single
V
230
Hz
Condition
(Ambient/Water)
kW
50
A35W7
A7W35
A2W35
Cooling: 1.04
Heating: 0.64
Heating: 0.90
Maximum Input Power For Heatpump System
kW
Power Supply 1 : Phase (Ø) / Max. Current (A) / Max. Input Power (W)
1Ø / 11.0 / 2.35k
Power Supply 2 : Phase (Ø) / Max. Current (A) / Max. Input Power (W)
1Ø / 26.0 / 6.00k
Power Supply 3 : Phase (Ø) / Max. Current (A) / Max. Input Power (W)
—/—/—
Starting Current
2.35
A
Condition
(Ambient/Water)
A
Running Current
Maximum Current For Heatpump System
Power Factor
Power factor means total figure of compressor and
outdoor fan motor.
Power Cord
Number of core
Length
3.0
A35W7
A7W35
A2W35
Cooling: 4.8
Heating: 3.0
Heating: 4.2
A
11.0
%
Cooling: 94
Heating: 93
-
m (ft)
-
Thermostat
Electronic Control
Protection Device
Electronic Control
Item
Performance Test Condition
Operation Range
Outdoor Ambient
°C
Water Outlet
°C
Internal Pressure Differential
Water Pipe Diameter
Condition
(Ambient/Water)
dB (A)
A35W7
A7W35
A2W35
Cooling: 30
Heating: 30
—
Power Level dB
Cooling: 43
Heating: 43
—
mm (inch)
Width
mm (inch)
502 (19-3/4)
mm (inch)
353 (13-29/32)
kg (lbs)
44 (97)
Liquid
mm (inch)
6.35 (1/4)
Gas
mm (inch)
12.70 (1/2)
Inlet
mm (inch)
28 (1-3/32)
mm (inch)
28 (1-3/32)
mm (inch)
Motor Type
3
W
25
Type
Brazed Plate
No. of Plates
Size (W x H x L)
Water Flow Rate
Pressure Relief Valve Water Circuit
48
mm
93 × 82 × 325
kPa
Cooling: 9.2 (0.6)
Heating: 9.2 (0.6)
Open: 300, Close: 265 and below
A
Residual Current Circuit Breaker (40)
3
l/min (m /h)
Flow Switch
Protection Device
15 (19/32)
Capacitor Run Induction Motor (2.5 μF)
No. of Speed
Input Power
Hot Water Coil
892 (35-1/8)
Depth
Outlet
Water Drain Hose Inner Diameter
Pump
EN 14511
Cooling: 16 ~ 43
Heating: -20 ~ 35
Cooling: 5 ~ 20
Heating: 25 ~ 55
Cooling: 7.5
Heating: 7.5
Height
Net Weight
Refrigerant Pipe Diameter
Indoor Unit
kPa
Noise Level
Dimension
Unit
Magnetic Lead Switch
6
Item
Expansion Vessel
Capacity of Integrated Electric Heater
Unit
Indoor Unit
Volume
I
10
MWP
bar
3
kW
3.00
Note:
š Cooling capacities are based on outdoor air temperature of 35°C Dry Bulb with controlled indoor water inlet
temperature of 12°C and water outlet temperature of 7°C.
š Heating capacities are based on outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb
(42.8°F Wet Bulb) with controlled indoor water inlet temperature of 30°C and water outlet temperature of 35°C.
š Specification are subjected to change without prior notice for further improvement.
7
2.2
WH-SDC05E3E5 WH-UD05EE5
Item
Performance Test Condition
Cooling Capacity
Unit
Outdoor Unit
EN 14511
Condition
(Ambient/Water)
kW
Cooling EER
Heating Capacity
Air Flow
15300
kcal/h
3870
W/W
2.69
2.32
A7W35
A2W35
5.00
4.20
BTU/h
17100
14300
kcal/h
4300
3610
W/W
4.63
3.11
kcal/hW
Condition
(Ambient/Water)
dB (A)
3.98
2.67
Cooling: 48
Heating: 48
—
Power Level dB
Cooling: 66
Heating: 66
Cooling: 39.3 (1390)
Heating: 34.4 (1310)
Expansion Valve
—
3
3
m /min (ft /min)
Refrigeration Control Device
Refrigeration Oil
cm
Refrigerant (R410A)
Dimension
Height
3
A35W7
A7W35
FV50S (450)
kg (oz)
1.20 (42.4)
mm (inch)
622 (24-1/2)
Width
mm (inch)
824 (32-15/32)
Depth
mm (inch)
298 (11-24/32)
kg (lbs)
39 (86)
Liquid
mm (inch)
6.35 (1/4)
Gas
Net Weight
Pipe Diameter
4.50
BTU/h
kcal/hW
Condition
(Ambient/Water)
kW
Heating COP
Noise Level
A35W7
mm (inch)
12.70 (1/2)
Standard Length
m (ft)
7 (23.0)
Pipe Length Range
m (ft)
3 (9.8) ~ 15 (49.2)
I/D & O/D Height Difference
m (ft)
5 (16.4)
Additional Gas Amount
Refrigeration Charge Less
Compressor
g/m (oz/ft)
20 (0.2)
m (ft)
10 (32.8)
Type
Hermetic Motor
Motor Type
Rated Output
Fan
Brushless (4-poles)
kW
0.90
Type
Propeller Fan
Material
PP
Motor Type
Input Power
W
—
Output Power
W
40
Cooling: 980
Heating: 860
Aluminium (Pre Coat)
Fan Speed
Heat Exchanger
DC (8-poles)
rpm
Fin material
Fin Type
Corrugated Fin
Row × Stage × FPI
Size (W × H × L)
2 × 28 × 17
mm
36.4 × 588 × 827.7 : 856.3
8
A2W35
Item
Power Source (Phase, Voltage, Cycle)
Input Power
Unit
ø
Single
V
230
Hz
Condition
(Ambient/Water)
kW
50
A35W7
A7W35
A2W35
Cooling: 1.67
Heating: 1.08
Heating: 1.35
Maximum Input Power For Heatpump System
kW
Power Supply 1 : Phase (Ø) / Max. Current (A) / Max. Input Power (W)
1Ø / 12.0 / 2.59k
Power Supply 2 : Phase (Ø) / Max. Current (A) / Max. Input Power (W)
1Ø / 26.0 / 6.00k
Power Supply 3 : Phase (Ø) / Max. Current (A) / Max. Input Power (W)
—/—/—
Starting Current
2.59
A
Condition
(Ambient/Water)
A
Running Current
Maximum Current For Heatpump System
Power Factor
Power factor means total figure of compressor and
outdoor fan motor.
Power Cord
Number of core
Length
5.0
A35W7
A7W35
A2W35
Cooling: 7.6
Heating: 5.0
Heating: 6.2
A
12.0
A35W7
Cooling: 96
%
A7W35
Heating: 94
-
m (ft)
-
Thermostat
Electronic Control
Protection Device
Electronic Control
Item
Performance Test Condition
Operation Range
°C
Water Outlet
°C
Water Pipe Diameter
Condition
(Ambient/Water)
dB (A)
A35W7
A7W35
A2W35
Cooling: 30
Heating: 30
—
Power Level dB
Cooling: 43
Heating: 43
—
mm (inch)
Width
mm (inch)
502 (19-3/4)
mm (inch)
353 (13-29/32)
kg (lbs)
44 (97)
Liquid
mm (inch)
6.35 (1/4)
Gas
mm (inch)
12.70 (1/2)
Inlet
mm (inch)
28 (1-3/32)
mm (inch)
28 (1-3/32)
mm (inch)
Motor Type
3
W
29
Type
Brazed Plate
No. of Plates
Size (W x H x L)
Water Flow Rate
Pressure Relief Valve Water Circuit
15 (19/32)
Capacitor Run Induction Motor (2.5 μF)
No. of Speed
Input Power
Hot Water Coil
892 (35-1/8)
Depth
Outlet
Water Drain Hose Inner Diameter
Pump
EN 14511
Cooling: 16 ~ 43
Heating: -20 ~ 35
Cooling: 5 ~ 20
Heating: 25 ~ 55
Cooling: 13.2
Heating: 15.8
Height
Net Weight
Refrigerant Pipe Diameter
Indoor Unit
kPa
Noise Level
Dimension
Unit
Outdoor Ambient
Internal Pressure Differential
A2W35
Heating: 95
48
mm
93 × 82 × 325
3
l/min (m /h)
kPa
Flow Switch
Cooling: 12.9 (0.8)
Heating: 14.3 (0.9)
Open: 300, Close: 265 and below
Magnetic Lead Switch
9
Item
Unit
Indoor Unit
A
Residual Current Circuit Breaker (40)
Volume
I
10
MWP
bar
3
kW
3.00
Protection Device
Expansion Vessel
Capacity of Integrated Electric Heater
Note:
š Cooling capacities are based on outdoor air temperature of 35°C Dry Bulb with controlled indoor water inlet
temperature of 12°C and water outlet temperature of 7°C.
š Heating capacities are based on outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb
(42.8°F Wet Bulb) with controlled indoor water inlet temperature of 30°C and water outlet temperature of 35°C.
š Specification are subjected to change without prior notice for further improvement.
10
3. Features
š
Inverter Technology
š
High Efficiency
š
Compact Design
š
Environment Protection
š
Long Installation Piping
š
Easy to use control panel
š
Weekly Timer setting
š
Quality Improvement
š
Serviceability Improvement
š
Operation Condition
- Energy saving
- Non-ozone depletion substances refrigerant (R410A)
- Long piping up to 15 meter with height difference 5 meter
- Flexible 4-way piping for outdoor unit
- Random auto restart after power failure for safety restart operation
- Gas leakage protection
- Prevent compressor reverse cycle
- Inner protector to protect compressor
- Breakdown Self Diagnosis function
- System Status Check Buttons for servicing purpose
- System Pumpdown Button for servicing purpose
- Front maintenance design for outdoor unit
COOLING
HEATING
Maximum
Minimum
Maximum
Minimum
Indoor
Water outlet temperature (°C)
20
5
55
25
Outdoor
Ambient temperature (°C)
43
16
35
-20
NOTICE : When the outdoor temperature is out of the above temperature range, the heating capacity will drop significantly
and outdoor unit might stop for protection control.
11
4. Location of Controls and Components
4.1
4.1.1
Indoor Unit
Location of Control
12
13
14
4.1.2
Weekly Timer Setting
15
4.1.3
Setting Up the Special Functions
16
4.1.4
4.2
Main Components
Outdoor Unit
17
5. Dimensions
5.1
Indoor Unit
18
5.2
Outdoor Unit
19
6. Refrigeration and Water Cycle Diagram
Piping size
Model
WH-S*03*
WH-U*03*
WH-S*05*
WH-U*05*
Gas
Liquid
ø12.7mm
(1/2")
ø12.7mm
(1/2")
ø6.35mm
(1/4")
ø6.35mm
(1/4")
Rated
Length
(m)
Max
Elevation
(m)
Min.
Piping
Length
(m)
Max.
Piping
Length
(m)
Additional
Refrigerant
(g/m)
7
5
3
15
20
7
5
3
15
20
* If piping length is over common length, additional refrigerant should be added as shown in the table.
20
21
7. Block Diagram
22
8. Wiring Connection Diagram
8.1
Indoor Unit
23
8.2
Outdoor Unit
24
9. Electronic Circuit Diagram
9.1
Indoor Unit
25
9.2
Outdoor Unit
26
10. Printed Circuit Board
10.1 Indoor Unit
10.1.1 Main Printed Circuit Board
27
10.1.2 Solar Printed Circuit Board (Optional)
28
10.2 Outdoor Unit
10.2.1 Main Printed Circuit Board
29
11. Installation Instruction
11.1
Select the Best Location
INDOOR UNIT
š There should not be any heat source or steam
near the unit.
š A place where air circulation in the room is good.
š A place where drainage can be easily done.
š A place where noise prevention is taken into
consideration.
š Do not install the unit near the door way.
š Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles.
š Recommended installation height for indoor unit
shall be at least 800 mm.
š Must install on a vertical wall.
š When install electrical equipment at wooden
building of metal lath or wire lath, according to
electrical facility technical standard, no electrical
contact between equipment and building is
allowed. Insulator must be installed in between.
š Do not install the unit at outdoor. This is designed
for indoor installation only.
š When connecting solar pump station cable
between indoor unit and solar pump station, the
distance between both apparatuses shall be 2 ~
8 meters and the length of the said cable must not
exceed 10 m.
Failure to do so may lead to abnormal operation
to the system.
Piping size
Model
AddiMax Min. Max.
Rated
tional
Eleva- Piping Piping
Length
Refrigetion Length Length
Gas Liquid (m)
rant
(m)
(m)
(m)
(g/m)
WH-S*03*
WH-U*03*
ø12.7 ø6.35
mm mm
(1/2”) (1/4”)
7
5
3
15
20
WH-S*05*
WH-U*05*
ø12.7 ø6.35
mm mm
(1/2”) (1/4”)
7
5
3
15
20
Example :
If piping length is 15m, the quantity of additional
refrigerant should be 100g. [(15-10)m x 20 g/m = 100g]
REMARK:
*Cooling model refer to WH-S*C***
11.2
OUTDOOR UNIT
š If an awning is built over the unit to prevent direct
sunlight or rain, be careful that heat radiation from
the condenser is not obstructed.
š Avoid installations in areas where the ambient
temperature may drop below -20°C.
š Keep the spaces indicated by arrows from wall,
ceiling, fence or other obstacles.
š Do not place any obstacles which may cause a
short circuit of the discharged air.
š If outdoor unit installed near sea, region with high
content of sulphur or oily location (e.g. machinery
oil, etc), it lifespan maybe shorten.
š If piping length is over 10 m, additional refrigerant
should be added as shown in the table.
30
Indoor/Outdoor Unit
Installation Diagram
11.3
Indoor Unit
11.3.1 HOW TO FIX INSTALLATION PLATE
11.3.3 INDOOR UNIT INSTALLATION
The mounting wall is strong and solid enough to prevent
it from the vibration.
11.3.3.1
1
2
3
The centre of installation plate should be at more than
551 mm at right and left of the wall.
The distance from installation plate edge to ground
should more than 1550 mm.
š Always mount the installation plate horizontally by
aligning the marking thread and using a level gauge.
š Mount the installation plate on the wall with 6 sets of
plug, bolt and washer (all non-supply) with size M8.
Install the Indoor Unit
When connecting solar pump station cable
between indoor unit and solar pump station, the
distance between both apparatuses shall be 2 ~
8 meters and the length of the said cable must
be shorter than 10 meter.
Failure to do so may lead to abnormal operation
to the system.
Engage the slots on the indoor unit to the hooks
of installation plate . Ensure the hooks are
properly seated on the installation plate by
moving it left and right.
Fix the screws to the holes on the hooks of
installation plate, , as illustrated below.
11.3.2 TO DRILL A HOLE IN THE WALL
AND INSTALL A SLEEVE OF PIPING
1
2
3
Insert the piping sleeve to the hole.
Fix the bushing to the sleeve.
Cut the sleeve until it extrudes about 15 mm
from the wall.
CAUTION
When the wall is hollow, please be sure to use the sleeve for
tube assembly to prevent dangers caused by mice biting the
connecting cable.
4
Finish by sealing the sleeve with putty or
caulking compound at the final stage.
11.3.3.2
š
š
š
š
š
š
š
š
31
Water Piping Installation
The minimum requirement of water in the system is
30 litres. If this value could not be achieved, please
install additional buffer tank (field supply).
Water inlet and water outlet in indoor unit are used
for connection to water circuit. Please request a
licensed technician to install this water circuit.
This water circuit must comply with all relevant
European and national regulations, i.e. IEC/EN
61770.
Be careful not to deform the piping with excessive
force when doing piping connection job.
Use Rp 1 1/4" nut for both water inlet and outlet
connection and clean all pipings with tap water
before connecting to the indoor unit.
Cover the pipe end to prevent dirt and dust when
inserting it through a wall.
Choose proper sealer which can withstand the
pressures and temperatures of the system.
If an existing tank is to be connected to this
indoor/outdoor unit, ensure the pipes are clean
before water pipe installation is carried out.
š
š
11.3.3.4
An external filter (30 mesh or more, field supplied)
must be installed before the water inlet of the indoor
unit (with “WATER IN” indication).
Refer to Diagram 4.1 for pipe connection of
Radiator, Floor Heater, Tank Unit, Solar Pump
Station, 3-way Valve Kit, 2-way Valve Kit and etc.
Fail to connect the pipes appropriately might cause
the unit malfunction.
1
2
3
Indoor Unit Refrigerant Pipe
Installation
Please make flare after inserting flare nut
(located at joint portion of tube assembly) onto
the copper pipe. (In case of using long piping)
Do not use pipe wrench to open refrigerant
piping. Flare nut may be broken and cause
leakage. Use proper spanner or ring wrench.
Connect the piping:
o Align the center of piping and sufficiently
tighten the flare nut with fingers.
o Further tighten the flare nut with torque
wrench in specified torque as stated in the
table.
Model
WH-S*03/05*
WH-U*03/05*
Piping size (Torque)
Gas
Liquid
ø12.7mm (1/2”)
[55 N•m]
ø6.35mm (1/4”)
[18 N•m]
CAUTION
Do not over tighten, over tightening cause gas leakage.
š
š
š
š
Be sure to use two spanners to tighten the
connection. Tighten the nuts with torque wrench:
117.6N•m.
If non-brass metallic piping is used for installation,
make sure to insulate the pipes to prevent galvanic
corrosion.
Make sure to insulate the water circuit pipes to
prevent reduction of heating capacity.
After installation, check the water leakage condition
in connection area during test run.
11.3.3.5
š
š
š
š
š
11.3.3.3
š
š
Insulation (Cooling model only)
Mount the PS foam and long banding strap to water
inlet and outlet connectors, as shown in below illustration.
32
Drain Hose Installation
Use inner diameter 15 mm drain hose in the market.
This hose must to be installed in a continuously
downward direction and in a frost-free environment.
Guides this hose’s outlet to outdoor only.
Do not insert this hose into sewage hose or
cleaning hose that may generate ammonia gas,
sulfuric gas, etc.
If necessary, use hose clamp to further tighten the
hose at drain hose connector to prevent leakage.
Water will drip from this hose, therefore the outlet of
this hose must be installed in an area where the
outlet cannot become blocked.
11.3.3.6
š
š
š
š
š
š
Drain Elbow and Hose Installation (Cooling model only)
š
Fix the drain elbow and packing to the bottom
of indoor unit, as shown in below illustration.
Use inner diameter 17 mm drain hose in the
market.
This hose must to be installed in a continuously
downward direction and in a frost-free
environment.
Guides this hose’s outlet to outdoor only.
Do not insert this hose into sewage or drain pipe
that may generate ammonia gas, sulfuric gas, etc.
If necessary, use hose clamp to further tighten the
hose at drain hose connector to prevent leakage.
Water will drip from this hose, therefore the outlet
of this hose must be installed in an area where the
outlet cannot become blocked.
11.3.4 CONNECT THE CABLE TO THE INDOOR UNIT
1
2
3
Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5
or 2.5 mm2 flexible cord, type designation 60245 IEC 57 or heavier cord.
o Ensure the colour of wires of outdoor unit and the terminal no. are the same to the indoor unit’s
respectively.
o Earth wire shall be longer than the other wires as shown in the figure for the electrical safety in case of
the slipping out of the cord from the Holder (Clamper).
An isolating device must be connected to the power supply cable.
o Isolating device (Disconnecting means) should have minimum 3.0 mm contact gap.
o Connect the approved polychloroprene sheathed power supply 1 cord (3 x 1.5 or 2.5 mm2) and power
supply 2 cord (3 x 4.0 mm2) and type designation 60245 IEC 57 or heavier cord to the terminal board,
and to the other end of the cord to isolating device (Disconnecting means).
To avoid the cable and cord being damaged by sharp edges, the cable and cord must be passed through a
bushing (located at the bottom of indoor unit) before being connected to the terminal block. The bushing must
be used and must not be removed.
Connecting with external device (optional)
1 All connections shall follow to the local national wiring standard.
2 It is strongly recommended to use manufacturer-recommended parts and accessories for installation.
3 Maximum output power of booster heater should be ≤ 3 kW. Booster Heater cord must be (3 x min 1.5 mm2),
of type designation 60245 IEC 57 or heavier.
4 Two-way Valve shall be spring and electronic type, refer to “Field Supply Accessories” table for details. Valve
cable shall be (3 x min 0.5 mm2), of type designation 60245 IEC 57 or heavier, or similarly double insulation
sheathed cable.
* note: - Two-way Valve shall be CE marking compliance component.
- Maximum load for the valve is 9.8VA.
5 Three-Way Valve shall be spring and electronic type. Valve cable shall be (3 x min 0.5 mm2), of type
designation 60245 IEC 57 or heavier, or similarly double insulation sheathed cable.
* note: - Should be CE marking compliance component.
- It should be directed to heating mode when it is OFF.
- Maximum load for the valve is 9.8VA.
6 Room Thermostat cable must be (4 or 3 x min 0.5 mm2), double insulation layer of PVC-sheathed or rubbersheathed cable.
7 Tank OLP cable must be (2 x min 0.5 mm2), double insulation layer of PVC-sheathed or rubber-sheathed
cable.
* note: - if such connection deemed NO necessary for tank OLP, please connect jumper between terminal
no. 13 and 14.
8 Tank Sensor shall be resistance type, please refer to Graph 5.1 for the characteristic and details of sensor.
Its cable shall be (2 x min 0.3 mm2), double insulation layer (with insulation strength of min 30V) of PVCsheathed or rubber-sheathed cable.
33
9
External Controller shall be connected to 1-pole switch with min 3.0mm contact gap. (connection refer to
Diagram 5.2). Its cable must be (2 x min 0.5 mm2), double insulation layer of PVC-sheathed or rubbersheathed cable.
* note: - When making such connection, kindly remove the jumper between terminal no. 17 and 18.
- Switch used shall be CE compliance component.
- Maximum operating current shall be less than 3Arms.
10 Must install Solar Connection PCB (optional) to indoor unit when Solar Pump Station is utilized. Refer Solar
Connection PCB’s installation instruction for detail of installation.
11 Solar Three-way Valve cable shall be (3 x min 0.5 mm2), double insulation layer PVC-sheathed or rubbersheathed cable.
12 Solar Pump Station cable shall be (2 x min 0.5 mm2), of double insulation PVC-sheathed or rubber-sheathed
cable. Strongly recommended install with maximum length of 10 meter only.
Terminal screw
Tightening torque N•cm {kgf•cm}
M4
157~196 {16~20}
M5
196~245 {20~25}
34
11.3.4.1
Wire Stripping and Connecting Requirement
11.3.4.2
Connecting Requirement
š
š
š
š
The equipment’s power supply 1 complies with IEC/EN 61000-3-2.
The equipment’s power supply 2 complies with IEC/EN 61000-3-12.
The equipment’s power supply 2 shall be connected to a suitable supply network, with the following maximum
permissible system impedance Zmax = 0.236Ω at the interface.
Please liaise with supply authority to ensure that the power supply 2 is connected only to a supply of that
impedance or less.
35
11.4
Outdoor Unit
11.4.1 INSTALL THE OUTDOOR UNIT
š
After selecting the best location, start installation
according to Indoor/Outdoor Unit Installation
Diagram.
1 Fix the unit on concrete or rigid frame firmly
and horizontally by bolt nut (ø10 mm).
2 When installing at roof, please consider strong
wind and earthquake. Please fasten the
installation stand firmly with bolt or nails.
11.4.2 CONNECTING THE PIPING
Piping size (Torque)
Model
WH-S*03/05*
WH-U*03/05*
Gas
Liquid
ø12.7mm (1/2”)
[55 N•m]
ø6.35mm (1/4”)
[18 N•m]
Connecting The Piping To Outdoor Unit
Decide piping length and then cut by using pipe cutter.
Remove burrs from cut edge. Make flare after
inserting the flare nut (locate at valve) onto the copper
pipe.
Align center of piping to valves and then tighten with
torque wrench to the specified torque as stated in the
table.
CUTTING AND FLARING THE PIPING
1 Please cut using pipe cutter and then remove the burrs.
2 Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused.
Turn the piping end down to avoid the metal powder entering the pipe.
3 Please make flare after inserting the flare nut onto the copper pipes.
36
11.4.3 EVACUATION OF THE EQUIPMENT
WHEN INSTALLING AN AIR-TO-WATER HEAT PUMP, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR
UNIT AND PIPES in the following procedure.
1
2
3
4
5
6
7
8
Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way
valve.
o Be sure to connect the end of the charging hose with the push pin to the service port.
Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and
vacuum pump adaptor.
Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from
0 cmHg (0 MPa) to –76 cmHg (–0.1 MPa). Then evacuate the air approximately ten minutes.
Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the
gauge does not move after approximately five minutes.
Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
Tighten the service port caps of the 3-way valve at a torque of 18 N•m with a torque wrench.
Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN”
using a hexagonal wrench (4 mm).
Mount valve caps onto the 2-way valve and the 3-way valve.
o • Be sure to check for gas leakage.
CAUTION
If gauge needle does not move from 0cmHg (0MPa) to –76cmHg (–0.1MPa), in step above take the following measure:
š If the leak stops when the piping connections are tightened further, continue working from step .
š If the leak does not stop when the connections are retightened, repair the location of leak.
š Do not release refrigerant during piping work for installation and reinstallation.
š Take care of the liquid refrigerant, it may cause frostbite.
11.4.4 CONNECT THE CABLE TO THE OUTDOOR UNIT
(FOR DETAIL REFER TO WIRING DIAGRAM AT UNIT)
1 Remove the control board cover from the unit by loosening the screw.
2 Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x (1.5
or 2.5 mm2) flexible cable, type designation 60245 IEC 57 or heavier cable.
3
4
5
Secure the cable onto the control board with the holder (clamper).
Attach the control board cover back to the original position with screw.
For wire stripping and connection requirement, refer to instruction 11.3.4 of indoor unit.
37
11.4.5 PIPE INSULATION
1
2
Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation
Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.
If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by
using POLY-E FOAM with thickness 6 mm or above.
11.4.6 Disposal of Outdoor Unit Drain Water
š
When a Drain elbow is used, please ensure to follow below:
o the unit should be placed on a stand which is taller than 50 mm.
o cover the 7 holes (ø20mm) with Rubber cap (refer to illustration below).
o use a tray (field supply) when necessary to dispose the outdoor unit drain water.
š
If the unit is used in an area where temperature falls below 0°C for 2 or 3 consecutive days, it is recommended
not to use the Drain elbow and Rubber cap , for the drain water freezes and the fan will not rotate.
38
12. Operation and Control
12.1 Basic Function
Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time
passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating
mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and
performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by
the microcomputer at indoor unit that judging the condition according to internal water setting temperature and water
outlet temperature.
12.1.1 Internal Water Setting Temperature
Once the operation starts, control panel setting temperature will be taken as base value for temperature shifting
processes. These shifting processes are depending on the Air-to-Water Heatpump settings and the operation
environment. The final shifted value will be used as internal water setting temperature and it is updated continuously
whenever the electrical power is supplied to the unit.
12.1.2 Heating Operation
12.1.2.1
š
š
Thermostat control
Compressor is OFF when Water Outlet Temperature - Internal Water Setting Temperature > 2°C for continuously
3 minutes.
Compressor is ON after waiting for 3 minutes, if the Water Outlet Temperature - Water Inlet Temperature
(temperature at thermostat OFF is triggered) < -3°C.
12.1.3 Cooling Operation
12.1.3.1
š
š
Thermostat control
Compressor is OFF when Water Outlet Temperature - Internal Water Setting Temperature > -1.5°C for
continuously 3 minutes.
Compressor is ON after waiting for 3 minutes, if the Water Outlet Temperature - Water Inlet Temperature
(temperature at thermostat OFF is triggered) < 3°C.
39
12.1.4 Cool Mode Operation
1
3 ways valve control:
o 3 ways valve switch and fix to room side.
2
Heatpump operate follow normal cooling operation.
3
Backup heater DOES NOT operate during cool mode.
4
Solar 3 way valve operates follow solar operation specification.
5
2 ways valve control:
o 2 ways valve is closed.
Cool Mode Operation Time Chart
40
12.1.5 Cool + Tank Mode Operation
12.1.6 Tank Mode Operation
Control contents:
š 3 ways valve direction
- 3 ways valve switch and fix to tank side.
š
Heat pump Thermostat characteristic
- Water set temperature = Tank set temperature or [51°C] whichever lower.
- Heat pump Water Outlet set temperature is set to Maximum (53°C) at tank mode.
i. Case 1
- THERMO OFF TEMP:
1 THERMO OFF TEMP = Water set temperature + [0°C].
2 Tank temperature > THERMO OFF TEMP for continuous 10 seconds after heat pump OFF, water pump OFF.
- THERMO ON TEMP:
1 THERMO ON TEMP = Water set temperature + [-2°C].
When detect tank temperature < THERMO ON TEMP, water pump ON for 3 minutes then heat pump ON.
ii. Case 2
- Heatpump THERMO OFF TEMP:
1 Heat pump THERMO OFF TEMP = 55°C + [2°C].
2 Water outlet temperature > Heat pump THERMO OFF TEMP for continuous 3 minutes, heat pump OFF.
- Heatpump THERMO ON TEMP:
1 Heat pump THERMO ON TEMP = Water inlet during thermo off time + [-3°C].
2 Heat pump ON back when water outlet temperature < Heat pump THERMO ON TEMP.
41
iii. Case 3
- Heat pump THERMO OFF TEMP:
1 Water inlet temperature > 55°C for continuous 60 secs, heat pump OFF.
- Heat pump THERMO ON TEMP:
1 Heat pump THERMO ON TEMP = Water inlet temperature < 55°C.
š
Booster heater control
- Booster heater turn On and Off follow normal operation.
- Booster heater turn ON condition:
1 During startup time (initialization), Booster heater turn ON after DELAY TIMER.
2 When tank temperature lower than HEATER ON TEMP
3 20 minutes from previous heater off.
- Booster heater turn OFF condition:
1 When tank temperature higher than tank set temperature for continuous 15 secs.
š
Solar 3 way valve
- Solar pump operates follow solar operation specification.
š
š
2 way valve closes
Others
- Indoor backup heater cannot be ON during tank mode only.
42
43
12.1.7 Heat + Tank Mode Operation
Setting 1: When Heating priority is set by control panel:
1 3 ways valve control:
o 3 ways valve switch to room side during External Room Thermo ON OR Solar 3 ways valve ON OR
Tank Thermo OFF time, and switch to tank side at External Room Thermo OFF AND Solar 3 ways valve
OFF
2
Heat pump operation control:o During External Room Thermo ON time: (When room thermo ON, heat pump must operate to room
side)
š Heat pump operate follow normal operation at room side
o
During External Room Thermo OFF time:
š Switch 3 ways valve to tank side, IF
Under Solar Priority Set condition:
o Tank temperature < Tank THERMO ON TEMP AND Solar Valve OFF
Under Solar Priority Not Set condition:
o Tank temperature < Tank THERMO ON TEMP
44
š Switch back 3 ways valve to room side, Heat pump and water pump turn OFF, IF
o External Room Thermo ON back OR
Under Solar Priority Set condition:
ƒ Tank temperature > Tank THERMO OFF TEMP. for continuous 3 minutes OR Solar Valve
ON
Under Solar Priority Not Set condition:
ƒ Tank temperature > Tank THERMO OFF TEMP for continuous 3 minutes
* THERMO ON and THERMO OFF point refer to case below.
Operation condition when 3 ways valve switch to tank side:
ƒ Tank water set temperature = tank set temperature or [51°C] whichever lower
ƒ Heat Pump Water Outlet set temperature is set to [55°C] during tank interval
ƒ Initial Tank THERMO ON TEMP = heat pump tank target temperature + [55°C]
Case 1:
o THERMO OFF TEMP:
1. THERMO OFF TEMP = Heat pump tank target temperature + [0°C].
2. Tank temperature > THERMO OFF TEMP for continuous 10 seconds after compressor off, switch 3
ways valve to room side.
o
Next THERMO ON TEMP:
1. THERMO ON TEMP = Heat pump tank target temperature + [-2°C] or
2. If tank temperature < THERMO ON TEMP AND External Room Thermo OFF, switch to tank side.
Case 2:
o Heat pump THERMO OFF TEMP:
1. Heat pump THERMO OFF TEMP = 55°C + [+2°C].
2. Water outlet temperature > Heat pump THERMO OFF TEMP for continuous 3 minutes, heat pump
OFF.
o
Next THERMO ON TEMP:
1. THERMO ON TEMP = Water inlet when heat pump THERMO OFF + [-3°C].
2. If water outlet temperature < THERMO ON TEMP AND External Room Thermo OFF, heat pump ON.
Case 3:
o Heat pump THERMO OFF TEMP:
1. Water inlet temperature > 55°C for continuous 60 secs, heat pump OFF.
o
Next THERMO ON TEMP:
1. THERMO ON TEMP = Water inlet temperature < 55°C.
2. If water inlet temperature < THERMO ON TEMP AND External Room Thermo OFF, heat pump ON.
Case 4: (Only during solar priority is set condition)
o When solar request ON, solar valve will ON and switch 3 ways valve to room side.
o
THERMO ON TEMP:
1. THERMO ON TEMP = Heat pump tank target temperature + [-2°C].
2. If tank temperature < THERMO ON TEMP AND External Room Thermo OFF AND Solar 3WV OFF,
switch to tank side.
3
Backup Heater control:o During External Room Thermo ON time, follow normal backup heater control operation.
o During External Room Thermo OFF time, Backup heater OFF.
4
Booster heater control:
o Booster heater On/Off follow normal operation.
* Under solar priority is set condition, when solar 3 way valve is ON, booster heater turn OFF.
45
5
Solar 3 way valve:
o Solar 3 way valve operates follow solar operation specification.
* Under solar priority is set condition, when solar 3WV turn ON, booster heater will turn OFF and 3 ways
valve switch to room side.
* Under solar priority is not set condition, solar 3WV will OFF when heat pump operate to tank side.
o
2 way valve opens.
46
Setting 2: When heating priority is not set by control panel:
š When Solar Priority is set/not set by control panel:
1
3 ways valve control:
o 3 ways valve switch to room side during heating heat-up interval, and switch to tank side during tank
heat-up interval. Both mode will switch alternatively. Tank mode is the Initial running mode of this heat +
tank mode (heating no priority).
2
Heat pump operation control:
o During heating heat-up interval
- Follow normal heating operation.
Under solar priority set condition:
- Switch to tank heat-up interval and start counting tank heat-up timer when External Room Thermo
OFF AND solar 3WV OFF AND Tank temperature < THERMO ON TEMP (End Room Interval
Early) OR
- Switch to tank heat-up interval and start counting tank heat-up timer when tank temperature <
THERMO ON TEMP AND solar 3WV OFF
Under solar priority not set condition:
- Switch to tank heat-up interval and start counting tank heat-up timer when External Room Thermo
OFF AND Tank temperature < THERMO ON TEMP (End Room Interval Early) OR
- Switch to tank heat-up interval and start counting tank heat-up timer when tank temperature <
THERMO ON TEMP
* THERMO ON TEMP is defined form following Case1 to Case4.
o
During tank heat-up interval
- Heat pump tank target temperature = Tank set temperature or [51°C] whichever lower
- Heat pump Water Outlet set temperature is set to Maximum [55°C] during tank interval
- Initial Tank THERMO ON TEMP = heat pump tank target temperature + [-2°C]
Case 1:
- THERMO OFF TEMP:
1. THERMO OFF TEMP = Heat pump tank target temperature + [0°C].
2. Tank temperature > THERMO OFF TEMP for continuous 10 seconds after heat pump off due to
water thermo, switch 3 ways valve to room side. End Tank heat-up interval and start count
heating heat-up interval.
- THERMO ON TEMP:
1. THERMO ON TEMP = Heat pump tank target temperature + [-2°C].
2. After Heating heat-up interval, always detect tank temperature. Switch to next tank heat-up
interval when tank temperature < THERMO ON TEMP
Case 2:
- Heat pump THERMO OFF TEMP:
1. Heat pump THERMO OFF TEMP = 55°C + [+2°C].
2. Water outlet temperature > Heat pump THERMO OFF TEMP for continuous 3 minutes, heat
pump OFF.
- THERMO ON TEMP:
1. THERMO ON TEMP = Water inlet temperature, when heat pump thermo off + [-3°C].
Case 3:
- Heat pump THERMO OFF TEMP:
1. Water inlet temperature > 55°C for continuous 60 secs, heat pump OFF.
- THERMO ON TEMP:
1. THERMO ON TEMP = Water inlet temperature < 55°C.
Case 4: (Only during solar priority is set condition)
š When solar pump ON, tank heat-up interval end early and 3 ways valve switch to room side.
- THERMO ON TEMP:
1. THERMO ON TEMP = Heat pump tank target temperature + [-2°C].
2. After Heating heat-up interval, always detect tank temperature. Switch to next tank heat-up
interval when tank temperature < THERMO ON TEMP and solar 3 way valve OFF.
47
- Tank interval will end and start heating interval timer, IF
* When this condition happen at tank side before case 1 thermo-off. 3WV switch to room side
compulsory and continue until complete room interval.
1. Tank interval timer finish AND External Room Thermo ON OR
2. Fulfill above Case 1 of thermo off condition.
3
Backup heater control:
o During heating heat up interval.
- Follow normal backup heater control operation.
o During tank heat-up interval.
- Backup heater OFF during this interval.
4
Booster heater control:
o During heating heat-up interval.
- Booster heater ON/OFF according to booster heater operation control.
o During tank heat-up interval.
- Once switch from heating heat-up interval to tank heat-up interval, turn off the booster heater and start
counting the BOOSTER HEATER DELAY TIMER.
- Booster heater turn ON after BOOSTER HEATER DELAY TIMER fulfill and tank temperature lower
than tank set temperature.
- BOOSTER HEATER DELAY TIMER is clear when switch to heating heat-up interval.
5
Solar 3 way valve
o Solar 3WV operates follow solar operation specification.
* Under solar priority is set condition, when solar 3WV is ON, booster heater turn OFF.
* Under solar priority is not set condition, solar 3WV only can ON during heating heat-up interval.
6
2 way valve opens.
48
49
50
12.1.8 Setting Water Outlet Temperature for Heat Mode
š
The set temperature define the parameters for the outdoor ambient temperature dependent operation of the unit.
Where by the internal water setting temperature is determined automatically depending on the outdoor
temperature. The colder outdoor temperatures will result in warmer water and vice versa. The user has the
possibility to shift up or down the target water temperature by control panel setting.
š
Outdoor temperature is updated every 30 minutes when operation ON.
12.1.8.1
š
Heating Mode Operation Time Chart
Operation of heat pump provide heating capacity to room side by hot water through heating panel, floor or fan
coil.
1
2
3
4
5
3 ways valve control:
o 3 ways valve switch and fix to heating side.
Heat pump operate follow normal heating operation.
Backup heater operate follow normal operation.
Solar 3 way valve operates follow solar operation specification.
2 way valve opens.
12.1.9 Water Temperature Thermo Shift Setting
š
š
š
š
š
š
Switchs are ignored during “PUMPDW” = ON.
Switchs are ignored during “STATUS” = ON.
“▲”, “▼”, ”SELECT” switch are ignored if “SETTING” = OFF.
“CANCEL” switch is ignored if “SETTING” = OFF & “STATUS” = OFF.
If “SET” Switch pressed for less than 5secs, immediately enter water temperature shift setting mode.
Once enter this setting mode, “SETTING” display is ON.
This setting mode is used to easily shift the target water outlet temperature.
51
12.1.10 Outdoor Fan Motor Operation
Outdoor fan motor is adjusted according to operation condition. It starts when compressor starts operation and it
stops 30 seconds after compressor stops operation.
12.2
Water Pump
12.2.1 Water Pump Control
š
š
š
š
š
Once the indoor unit is ON, the water pump will be ON immediately and no error judgement for 9 minutes.
However, during this 9 minutes operation, if there is any abnormality cause at outdoor or malfunction, the
compressor should be OFF immediately and restart delay after 3 minutes.
The system will start checking on the water flow level after operation start for 9 minutes. If water flow level is
detected low continuously for 10 secs, the water pump and compressor will be OFF permanently and OFF/ON
control panel LED will blink (H62 error occurs).
When error happen, the power has to be reset to clear the error.
If there is no error indication, the water pump shall be continuously running.
The water pump will remain ON when compressor OFF due to thermostat OFF setting is reached.
12.2.2 Water Pump Only Operation
š
š
š
š
š
Water pump only circulation can be set from the control panel SERVICE S/W when the operation is in Standby
Mode.
Press the SERVICE S/W for continuous 5sec to enter Service Mode.
In Service Mode, select Sr:02 and press SET S/W to start water pump only operation.
Water pump will stop operation when H62 is triggered.
Press the OFF/ON button to stop the water pump only operation.
52
12.3
Pump Down Operation
Purpose
Ensure the pump down operation when relocating or disposing of the unit. The pump down operation will extract all
refrigerant from the piping into the outdoor unit.
1
2
3
4
12.4
Make sure the OFF/ON control panel LED is OFF (no operation).
Press the Pump Down button to start the pump down operation.
No low pressure protection error during pump down operation and 3-way valve will be shift to heating side.
Press OFF/ON button to stop the pump down operation.
Flow Switch
12.4.1 Flow Switch Control
1
2
12.5
The water flow switch serve as an overload protector that shuts down the unit when the water level is
detected to be low.
Detection is Lo (0 V) when there is no water flow, and detection is Hi (5 V) when there is water flow.
Force Heater Mode Operation
The backup heater also serves as backup in case of malfunctioning of the outdoor unit.
1 Make sure the OFF/ON control panel LED is OFF (no operation).
2 Press the Force button to start the force heater mode operation.
3 During force heater mode, all other operations are not allowed.
4 Press OFF/ON button to stop the force heater mode operation.
53
12.6
Indoor Unit Safety
12.6.1 Indoor Unit Safety Control
1
2
3
12.7
1
12.8
When water pump is ON, the system will start checking flow switch status (ON/OFF).
If the flow switch ON for 10 seconds, the system will check on the water inlet temperature for 10 seconds.
If the water inlet temperature not exceeds 80°C, the water pump shall be continuously running with normal
mode.
If the water inlet temperature exceeds 80°C for continuously 10 seconds, the water pump will be OFF
immediately.
After water pump OFF for more than 10 minutes, it will be ON back and the indoor unit safety control
checking is restarted.
Auto Restart Control
When the power supply is cut off during the operation of Air-to-Water Heatpump, the compressor will reoperate after power supply resumes.
Indication Panel
LED
Color
Light ON
Light OFF
Operation
Green
Operation ON
Operation OFF
Note:
š If Operation LED is blinking, there is an abnormality operation occurs.
54
12.9
Indoor Back-Up Heater Control
12.9.1 Indoor Electric Heater Control
1
Normal Heating Mode
o Heater On condition:
a. Heater switch is ON
b. After Heatpump thermo ON for [30] mins
c. After water pump operate [9] mins
d. Outdoor air temperature < Outdoor set temperature for heater
e. When water outlet temperature < Water set temperature + [-8°C]
f. [20] minutes since previous Backup heater Off
* When heatpump cannot operate due to error happens during normal operation, heater will go into
force mode automatic
* Heater need to operate during deice operation
o
a.
b.
c.
d.
2
Heater Stop Condition:
When outdoor set temperature > outdoor set temperature + [+2°C] for continuous 15 secs OR
When water out temp> water set temperature + [-2°C] for continuous 15 secs OR
Heater switch is Off OR
Heatpump thermo-off or OFF condition
Force Heater Mode
o Heater On condition:
a. After water pump operate [9] mins
b. When water outlet temperature < water set temperature + [-8°C]
c. [20] minutes since previous Backup heater Off
o
Heater Stop condition
a. Force mode off OR
b. When water outlet temperature > water set temperature + [-2°C] for continuous 15 secs
* Do not operate heater at the following situation
1 Water outlet temperature sensor, and water inlet sensor abnormal
2 Flow switch abnormal
3 Circulation pump stop condition
4 During Heatpump switch to tank side
12.10 Tank Booster Heater Control
12.10.1 Tank Booster Heater Control
Heating operation condition:
1
Booster heater Turn On condition:
o After BOOSTER HEATER DELAY TIMER fulfill during heatpump startup time in tank mode, or during
switching from heating heat-up interval to tank heat-up interval in heat + tank mode (heating priority not
set).
o Tank temperature < Tank set temperature + [-5°C],
o 20 minutes since previous heater off.
* BOOSTER HEATER DELAY TIMER is clear when tank heat-up interval end.
55
2
Booster heater Turn Off condition:
o Tank temperature > Tank set temperature + [+2°C] for continuous 15 sec
o When BOOSTER HEATER DELAY TIMER start count after switch from heating heat-up interval to tank
heat-up interval
* DELAY TIMER can be set by control panel.
12.11 Base Pan Heater Control (Optional)
š
To enable the base pan heater function, pin 3 of SW2 of water system PCB has to be switched from OFF to ON
position.
š
Base pan heater ON condition:
1 When outdoor ambient temperature ≤ 3°C AND
2 Deice operation ON
Base pan heater will continue ON for 10 minutes after deice operation ends.
š
Base pan heater OFF condition:
1 When outdoor ambient temperature > 3°C OR
2 When operation is not heating OR
3 Base pan heater ON timer count completed
12.12 Three Way Valve Control
š
š
Purpose:
- 3 ways valve is used to change flow direction of hot water from heatpump between heating side and tank side
Control contents:
1 3 ways valve switch Off:
o During 3 ways valve switch Off time, the hot water will provide heat capacity to heating side.
2 3 ways valve switch On:
o During 3 ways valve switch On time, the hot water will provide heat capacity to tank side.
3 Stop condition:
o During stop mode, 3 ways valve will be in switch off position
56
12.13 Sterilization Mode
š
Purpose:
o Boil tank temperature to customer set boiling temperature to operate sterilization.
š
Control start condition:
o Tank connection set to YES by remote controller
o Sterilization function selection is YES
o Sterilization signal received from remote controller by timer.
š
Control stop condition:
o After boiling timer completed. Boiling timer start counting once tank achieve boiling set temperature OR
o After 4 hours of operation since sterilization function start OR
š
Control content:
o Once the sterilization function enable, set the target tank temperature to Boiling Set Temperature.
o Booster heater will allow to ON during solar priority SET condition.
ƒ Booster heater OFF Temp. = Boiling Set Temperature 0°C
ƒ Booster heater ON Temp. = Boiling Set Temperature - 7°C
o The sterilization set temperature may not achieve if tank booster heater function is deactivated.
o Boiling timer which set by remote controller will start count after tank achieve boiling set temperature.
o Sterilization operation will end after complete boiling timer or Max 4 hrs from function start.
o Target tank temperature will set back to normal tank set temperature.
* Tank heater control is not affected by solar pump when solar priority set.
12.14 Quiet Operation
š
š
š
š
Purpose:
- To provide quiet operation compare to normal operation by reduces outdoor unit noise.
Starting condition:
1 When quiet button is presses.
2 When quiet request ON time by weekly timer (Refer to control panel.)
When any of above mentioned condition is achieved, this control is activated.
New target FM speed = Present target FM speed - 80 rpm
Minimum target FM speed = 200 rpm
Cancellation condition:
1 Cancel by press quiet button
2 Stop by OFF/ON button
3 When quiet request OFF time by weekly timer
When any of above mentioned condition is achieved, this control is cancelled.
12.15 Anti Freeze Control
š
š
Anti freeze protection control can be select YES or NO from control panel. Default setting is YES.
In heatpump system, there are 2 types of anti freeze control:
1 Water pump circulation anti frost control
ƒ Water pump turns ON when ALL the below conditions are fulfilled:
o Heatpump OFF (standby) OR water pump stop (Tank Mode) OR error occurs
o Water flow switch is not abnormal
o Outdoor ambient temp. < 3°C
o Water inlet/outlet temp. < 6°C
o After 5 minutes from previous water pump OFF
ƒ
ƒ
Water pump turns OFF when ANY of the below conditions is fulfilled:
o Outdoor ambient temp. ≥ 4°C
o During -5°C < outdoor ambient temp. < 4°C
ƒ After water pump ON for 4 minutes, and water inlet/outlet temp. ≥ 8°C
ƒ Else, shift to backup heater anti freeze control
o During outdoor ambient temp. < -5°C
ƒ After water pump ON for 4 minutes, and water inlet/outlet temp. ≥ 20°C
ƒ Else, shift to backup heater anti freeze control
However, if flow switch is abnormal (H62), then water pump circulation anti freeze control will not activate.
57
2
Backup heater anti freeze control:
ƒ Backup heater turns ON when ALL the below conditions are fulfilled:
o Water inlet/outlet temp. < 6°C
o Water pump circulation anti freeze control activated, and water pump ON for 4 minutes
ƒ Backup heater turns OFF when ANY of the below conditions is fulfilled:
o Water inlet/outlet temp. > 28°C
o Water pump circulation anti freeze control deactivated/water pump OFF
ƒ However, if backup heater is abnormal (H70), then backup heater anti freeze control will not activate.
12.16 Solar Operation (Optional)
12.16.1 Solar Operation:
1
2
3
4
External solar heat source signal can be connect to unit for proper control of heat source switching during
tank boiling time.
Control according to preset whether solar priority is set or not.
When tank connection is NOT set at SETTING mode, solar operation is disabled.
When Pump A (from solar pump station) is detected On through connection Y3 and Y4, then the Solar pump
3 Way Valve is requested ON (Refer to figure below).
12.16.2 Solar Operation Control
When solar priority is SET
1 Operation condition:
a 3 way valve operates if all of the following conditions are fulfilled:
š Power On. (regardless operation ON or OFF)
š There is operation request from solar pump station.
š Tank hot water temp is below solar on upper limit temp 72°C.
2
Stop condition:
a 3 way valve stops operating when:
š No power supply to unit OR
š There is NO operation request from solar pump station OR
š Tank hot water temp is above solar off upper limit temp 80°C.
* heat pump OFF OR operate to room side when solar pump operate during solar priority set.
* booster heater OFF when solar pump operate during solar priority set.
When solar priority is NOT SET
1 Operation condition:
a 3 way valve operates if all of the following conditions are fulfilled:
š Power On. (regardless operation ON or OFF)
š There is operation request from solar pump station.
š Tank hot water temp is below solar on upper limit temp 72°C.
š Heat pump thermo OFF in tank mode OR Heat pump operate to room side
(during operation ON and tank mode selected).
58
2
Stop condition:
a 3 way valve stops operating when:
š No power supply to unit OR
š There is NO operation request from solar pump station OR
š Tank hot water temp is above solar off upper limit temp 80°C.
š Heat pump thermo ON and operate to tank side. (during operation ON and tank mode selected)
59
60
12.17 External Room Thermostat Control (Optional)
Purpose:
1 Better room temperature control to fulfill different temperature request by external room thermostat.
Recommended external room thermostat:
Maker
Characteristic
Siemen (REV200)
Siemen (RAA20)
Touch panel
Analog
Connection of external room thermostat:
Wire Connection and thermo characteristic of Siemen REV200:
Setting
Set Temp < Actual Temp
Set Temp > Actual Temp
L/L1 (H)
Heat Thermo
L/L2 (C)
Cool Thermo
Open Circuit
Short Circuit
OFF
ON
Short Circuit
Open Circuit
ON
OFF
Wire Connection and thermo characteristic of Siemen RAA20:
Setting
Set Temp < Actual Temp
Set Temp > Actual Temp
L/Y1 (H)
Heat Thermo
L/Y2 (C)
Cool Thermo
Open Circuit
Short Circuit
OFF
ON
Short Circuit
Open Circuit
ON
OFF
Control Content:
š External room thermostat control activate only when remote thermostat connection select YES by Indoor control
panel.
š When indoor running heat mode, refer thermo On/Off from heating line feedback. And when indoor running cool
mode, refer thermo On/Off from cooling line feedback.
š Heat pump Off immediately when receive thermo off feedback.
61
12.18 Two Ways Valve Control
Functionality of 2 ways valve:
š Use to allow hot water to floor heating panel or block cold water to floor heating panel.
Control contents:
1 When indoor running in heat mode, OPEN the 2 ways valve.
2 When indoor running in cool mode, CLOSE the 2 ways valve.
3 Stop condition:
a. During stop mode, fix 2 ways valve in close condition.
* During pump down mode, fix 2 ways valve in close condition.
* During force mode, open 2 ways valve.
* Recommended Parts : SFA 21/18 (Siemens)
62
13. Protection Control
13.1
Protection Control for All Operations
13.1.1 Time Delay Safety Control
1
The compressor will not start for three minutes after stop of operation.
13.1.2 30 Seconds Forced Operation
1
2
Once the compressor starts operation, it will not stop its operation for 30 seconds.
However, it can be stopped using control panel at indoor unit.
13.1.3 Total Running Current Control
1
2
3
When the outdoor running current exceeds X value, the compressor frequency will decrease.
If the outdoor running current does not exceed X value, the compressor frequency will return to normal
operating frequency.
If the outdoor running current continue to increase till exceed Y value, compressor will stop, and if this occurs
3 times within 20 minutes, system will stop operation and OFF/ON control panel LED will blink (F16 error
occurs).
UD03EE5
Operation Mode
Heating
Cooling
X (A)
10.0
5.9
UD05EE5
Y (A)
14.8
14.8
X (A)
11.0
7.4
Y (A)
14.8
14.8
A. DC Peak Current Control
1 When the current to IPM exceeds set value of 21.1 A ± 0.9 A, compressor will stop. Compressor will restart
after three minutes.
2 If the set value exceeds again for more than 30 seconds after the compressor restarts, operation will restart
after two minutes.
3 If the set value exceeds again for within 30 seconds after the compressor restarts, operation will restart after
one minute. If this condition repeats continuously for seven times, system will stop operation and OFF/ON
control panel LED will blink (F23 error occurs).
13.1.4 Compressor Overheating Prevention Control
š
The compressor operating frequency is regulated in accordance to compressor tank temperature as shown in
below figures. When the compressor tank temperature exceeds 107°C, compressor will stop, and if this occurs 4
times within 30 minutes, system will stop operation and OFF/ON control panel LED will blink (F20 error occurs).
63
13.1.5 Low Frequency Protection Control 1
š
When the compressor continuously operates at frequency lower than 25 Hz for 240 minutes, the operation
frequency will change to 24 Hz for 2 minutes.
13.1.6 Low Frequency Protection Control 2
š
When all the below conditions comply, the minimum compressor frequency will change to lower frequency.
Temperature, T, for:
Outlet water (°C)
Outdoor air (°C)
Indoor heat exchanger (°C)
Heating
T < 14 or T 48
T < 4 or T 24
T 0
Cooling
T < 14 or T 30
T < 13 or T 38
T < 30
13.1.7 High Pressure Sensor Control
š
š
š
š
Purpose:
- To protect the system operation.
Detection period:
- After compressor on for 5 minutes.
Detection conditions:
- When abnormal high voltage detection, 5 V or when open circuit detection 0V for 5 seconds continuously.
After detection:
- When abnormality is detected continue 5 seconds, unit stop operation.
- OFF/ON control panel LED will blink (H64 error occurs).
13.1.8 Outside Temperature Current Control
13.1.9
š
š
Crank Case Heater Control
Purpose:
- For compressor protection during low outdoor ambient operation (during heating low temperature operation).
Control content:
a. Trigger heater START condition
o When the outdoor air temperature is 4°C or below, and discharge temperature is 11°C or below.
b. Resetting heater STOP condition
1. When the outdoor air temperature exceeds entry condition (2°C)
2. When the discharge temperature exceeds entry condition (7°C)
64
13.2
Protection Control for Heating Operation
13.2.1 Outdoor Air Temperature Control
The maximum current value is regulated when the outdoor air temperature rises above 14°C in order to avoid
compressor overloading.
13.2.2 Deice Operation
When outdoor pipe temperature and outdoor air temperature is low, deice operation start where outdoor fan motor
stop.
65
13.3
Protection Control for Cooling Operation
13.3.1 Outdoor Air Temperature Control
š
š
š
The Compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the
diagram below.
This control will begin 1 minute after the compressor starts.
Compressor frequency will adjust base on outdoor air temperature.
13.3.2 Freeze Prevention Control 1
1
2
3
When indoor heat exchanger temperature is lower than 0°C continuously for 10 seconds, compressor will
stop operating.
Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 1°C.
Indoor heat exchanger freeze prevention (H99) will memory in error history.
66
14. Servicing Mode
14.1
How to Take Out Front Plate
Please follow the steps below for take out front plate. Before removing the front plate of indoor unit, always switch off
all power supply (i.e. indoor unit power supply, heater power supply and tank unit power supply).
1 Remove the 2 mounting screws which located at bottom of the front plate and 1 mounting screw at the front
of the plate.
2 Gently pull the lower section of the front plate towards you to remove the front plate from left and right hooks.
3 Hold the left edge and right edge of front plate to lift up front plate from hooks.
14.2
How to Take Out Side Cabinet
Please follow the steps below to remove the side
cabinet. Before removing the front plate of indoor unit
always switch off all power supply (i.e. indoor power
supply, heater power supply and tank unit power
supply).
1 Perform the steps in HOW TO TAKE OUT
FRONT PLATE.
2 Remove all the 13 mounting screws on the left,
right and top of the side cabinet.
3 Gently remove the side cabinet by holding both
of the handles.
14.3
1
2
3
14.4
š
Test Run
Fill up the boiler tank with water. For details refer to boiler tanks installation instruction and operation
instruction.
Set ON to the indoor unit and RCCB. Then, for control panel’s operation please refers to air-to-water
heatpump’s operation instruction.
For normal operation, pressure gauge reading should be in between 0.05 MPa and 0.2 MPa.
If necessary, adjust the water pump speed accordingly to obtain normal water pressure operating range. If
adjust water pump speed cannot solve the problem, contact your local authorized dealer.
Proper Pump Down Procedure
Strictly follow the steps below for proper pump down procedure. Explosion may occur if the steps are not
followed as per sequence.
1 When the heatpump unit is not in operation(standby), press the “SERVICE” switch on control panel to enter
SERVICE mode. Operate the system in Sr : 01 mode for pump down operation.
2 After 10~15 minutes, (after 1 or 2 minutes in case very low ambient temperatures (< 10°C)), fully close 2 way
valve.
3 After 3 minutes, fully close 3 way valve.
4 Press the “OFF/ON” switch on control panel to stop pump down operation.
5 Remove the refrigerant piping.
67
14.5
š
Before adjust the water flow rate, make sure that the total water volume in the installation is 30 litres minimum for
heating side and tank side respectively.
The default setting is 'p-c mode, SPEED 4. Please ensure the minimum flow rate is not less than 9L/min.
Depend on the hydraulic system pressure loss and type, the water flow rate can be adjusted by turning the red
knob on the water pump.
14.6
š
š
š
š
How to Adjust Water Flow Rate
Expansion Vessel Pre Pressure Checking
Expansion Vessel with 10 L air capacity and initial pressure of 1 bar is installed in this indoor unit.
Total amount of water in system should be below 200 L.
(Note: This amount of water is not include the tank unit volume)
If total amount of water is over 200 L, please add expansion vessel.
Please keep the installation height difference of system water circuit within 7 m.
(Inner volume of same indoor unit is about 5 L)
68
15. Maintenance Guide
In order to ensure optimal performance of the unit, checks and inspections on the unit and the field wiring must be
carried out regularly.
Before carried out any maintenance or repair work, and removing the front plate of heat exchanger unit, always
switch off all power supply (i.e. indoor unit power supply, heater power supply and sanitary tank power supply).
Below checks must be carried out at least once a year.
1
2
Water pressure
Water pressure should not lower than 0.05 MPa (with inspects the pressure gauge). If necessary add tap
water into boiler tank. Refer to boiler tank installation instruction for details on how to add water.
Pressure relief valve
o Check for correction operation of pressure relief valve by turn up the lever to become horizontal. (Refer
to figure below)
o If you do not hear a clacking sound (due to water drainage), contact your local authorized dealer.
o Turn down the lever after checking finish.
o In case the water keeps drained out from the unit, switch off the system, and then contact your local
authorized dealer.
3
Air purge valve
Air purge valve must be installed at all high points in a closed water circuit system.
An automatic air purge valve is provided inside the indoor unit. To automatically purge the air from the
system, turn the plug on the air outlet anticlockwise by one complete turn from fully closed position.
Excessive air is automatically purged if the plug is kept in this position.
4
Indoor unit control board area
Thorough visual inspection of the control board and look for defects, i.e. loose connection, melting of wire
insulator and etc.
RCCB/ELCB
Ensure the RCCB/ELCB set to “ON” condition before check RCCB/ELCB.
Turn on the power supply to the indoor unit.
This testing could only be done when power is supplied to the indoor unit.
5
WARNING
Be careful not to touch parts other than RCCB test button when the power is supplied to Indoor Unit. Else, electrical shock may
happen.
o
o
o
o
Push the “TEST” button on the RCCB/ELCB. The lever would turn down and indicate “0” and indicate
green colour if it functions normal.
Contact authorized dealer if the RCCB/ELCB malfunction.
Turn off the power supply to the indoor unit.
If RCCB/ELCB functions normal, set the lever to “ON” again after testing finish.
69
6
Reset overload protector
Overload protector serves the safety purpose to prevent the water over heating. When the overload protector
trip at high water temperature, take below steps to reset it.
a. Take out OLP cover.
b. Use a test pen to push the centre button gently in order to reset the Overload protector.
c. After finish, install back the Overload protector following the reverse order of step a & b.
7
External water filter (field supply)
Clean the external water filter in regularly basic.
o External water filter is located inside the tube connector which is before water inlet connector of indoor
unit (indicated with “WATER IN”). (Refer to figure below)
o Use spanner to detach the tube connector nut.
o Take out the filter carefully so that not deforms it shape.
o Use tap water only to wash the residue on the filter. If necessary, gently use soft brush only to clean the
hard dirt.
o After clean, put it back to the original location and tighten the nut connection with torque wrench.
70
16. Troubleshooting Guide
16.1
Refrigeration Cycle System
In order to diagnose malfunctions, make sure that there
are no electrical problems before inspecting the
refrigeration cycle.
Such problems include insufficient insulation, problem
with the power source, malfunction of a compressor and a
fan.
The normal pressure of the refrigeration cycle depends
on various conditions, the standard values for them are
shown in the table on the right.
71
16.2
Relationship between the Condition of the Air-to-Water Heatpump
Indoor and Outdoor Units and Pressure and Electric Current
Heating Mode
Condition of the
Air-to-Water Heatpump
indoor and
outdoor units
Low Pressure
High Pressure
Cooling Mode
Electric current
during operation
Low Pressure
High Pressure
Electric current
during operation
Water leakage or
insufficient water flow
rate in the system
Excessive amount of
refrigerant
Inefficient compression
Insufficient refrigerant
(gas leakage)
Outdoor heat exchange
deficiency
Clogged expansion valve
or Strainer
š
Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is
started.
72
16.3
Breakdown Self Diagnosis Function
16.3.1 Self Diagnosis Function (Three Digits Alphanumeric Code)
š
š
š
When abnormality occur during operation, the system will stop operation, and OFF/ON control panel LED will
blink and error code will display on the control panel Timer display LCD.
Even error code is reset by turning OFF power supply or by pressing ERROR RESET button, if the system
abnormality is still un-repaired, system will again stop operation, and OFF/ON control panel LED will again blink.
The error code will store in IC memory.
š
To check the error code
1 When an abnormality occurs, system will stop operation and OFF/ON control panel LED will blink.
2 Error code of the abnormality will display on the control panel Timer display LCD.
3 To determine the abnormality description, the error code table needs to be referred.
š
To display past/last error code
1 Turn ON power supply.
2 Press and hold the CHECK button for more than 5 seconds to enter status mode.
3 Press the SEARCH DOWN/UP button to retrieve past/last error code.
4 Press the CANCEL button or wait 30 seconds to exit status mode.
š
To permanently delete error code from IC memory
1 Turn ON power supply.
2 Press and hold the ERROR RESET button for more than 8 seconds till a beep sound is heard.
73
16.4
Error Codes Table
Diagnosis display
Abnormality/Protection control
Abnormality judgement
H00
H12
No abnormality detected
Indoor/Outdoor capacity unmatched
—
90s after power supply
H15
Continue for 5 sec.
H42
Outdoor compressor temperature sensor
abnormality
Indoor refrigerant liquid temperature
sensor abnormality
Compressor low pressure abnormality
H62
H64
Water flow switch abnormality
Refrigerant high pressure abnormality
Continue for 1 min.
Continue for 5 sec.
H70
Back-up heater OLP abnormality
Continue for 60 sec.
H72
H76
Continue for 5 sec.
—
H90
Tank sensor abnormal
Indoor - control panel communication
abnormality
Indoor/outdoor abnormal communication
> 1 min after starting operation
H91
Tank heater OLP abnormality
Continue for 60 sec.
H95
H98
Indoor/Outdoor wrong connection
Outdoor high pressure overload
protection
—
—
H99
Indoor heat exchanger freeze prevention
—
F12
Pressure switch activate
F14
Outdoor compressor abnormal revolution
F15
Outdoor fan motor lock abnormality
F16
Total running current protection
F20
Outdoor compressor overheating
protection
F22
IPM (power transistor) overheating
protection
Outdoor Direct Current (DC) peak
detection
Refrigeration cycle abnormality
3 times occurrence within 30
minutes
7 times occurrence
continuously
2 times occurrence within 20
minutes
Cooling/Heating cycle changeover
abnormality
Pressure switch abnormality
Outdoor air temperature sensor
abnormality
Indoor water inlet temperature sensor
abnormality
Outdoor discharge pipe temperature
sensor abnormality
4 times occurrence within 30
minutes
Continue for 1 min.
Continue for 5 sec.
H23
F23
F24
F25
F27
F36
F37
F40
Continue for 5 sec.
—
4 times occurrence within 20
minutes
4 times occurrence within 20
minutes
2 times occurrence within 30
minutes
3 times occurrence within 20
minutes
4 times occurrence within 30
minutes
Continue for 5 sec.
Continue for 5 sec.
74
Primary location to verify
—
š Indoor/outdoor connection wire
š Indoor/outdoor PCB
š Specification and combination table in
catalogue
š Compressor temperature sensor
(defective or disconnected)
š Refrigerant liquid temperature sensor
(defective or disconnected)
š Outdoor pipe temperature sensor
š Clogged expansion valve or strainer
š Insufficient refrigerant
š Outdoor PCB
š Compressor
š Water flow switch
š Outdoor high pressure sensor
(defective or disconnected)
š Back-up heater OLP
(Disconnection or activated)
š Tank sensor
š Indoor - control panel
(defective or disconnected)
š Internal/external cable connections
š Indoor/Outdoor PCB
š Tank heater OLP
(Disconnection or activated)
š Indoor/Outdoor supply voltage
š Outdoor high pressure sensor
š Water pump or water leakage
š Clogged expansion valve or strainer
š Excess refrigerant
š Outdoor PCB
š Indoor heat exchanger
š Refrigerant shortage
š Pressure switch
š Outdoor compressor
š
š
š
š
š
š
š
š
š
š
š
š
š
š
š
š
š
š
š
š
Outdoor PCB
Outdoor fan motor
Excess refrigerant
Outdoor PCB
Compressor tank temperature sensor
Clogged expansion valve or strainer
Insufficient refrigerant
Outdoor PCB
Compressor
Improper heat exchange
IPM (Power transistor)
Outdoor PCB
Compressor
Insufficient refrigerant
Outdoor PCB
Compressor low compression
4-way valve
V-coil
Pressure switch
Outdoor air temperature sensor
(defective or disconnected)
š Water inlet temperature sensor
(defective or disconnected)
š Outdoor discharge pipe temperature
sensor (defective or disconnected)
Diagnosis display
Abnormality/Protection control
F41
PFC control
F42
Outdoor heat exchanger temperature
sensor abnormality
Outdoor defrost sensor abnormality
F43
F45
F46
F48
F49
F95
Abnormality judgement
4 times occurrence within 10
minutes
Continue for 5 sec.
Continue for 5 sec.
Indoor water outlet temperature sensor
abnormality
Outdoor Current Transformer open
circuit
Continue for 5 sec.
Outdoor EVA outlet temperature sensor
abnormality
Outdoor bypass outlet temperature
sensor abnormality
Cooling high pressure overload
protection
Continue for 5 sec.
—
Continue for 5 sec.
—
75
Primary location to verify
š Voltage at PFC
š Outdoor heat exchanger temperature
sensor (defective or disconnected)
š Outdoor defrost sensor (defective or
disconnected)
š Water outlet temperature sensor
(defective or disconnected)
š Insufficient refrigerant
š Outdoor PCB
š Compressor low
š Outdoor EVA outlet temperature sensor
(defective or disconnected)
š Outdoor bypass outlet temperature
sensor (defective or disconnected)
š Outdoor high pressure sensor
š Water pump or water leakage
š Clogged expansion valve or strainer
š Excess refrigerant
š Outdoor PCB
16.5
Self-diagnosis Method
16.5.1 Connection Capability Rank Abnormality (H12)
Malfunction Decision Conditions:
During startup operation of cooling and heating, the capability rank of indoor checked by the outdoor is used to
determine connection capability rank abnormality.
Malfunction Caused:
1 Wrong model interconnected.
2 Wrong indoor unit or outdoor unit PCB (main) used.
3 Faulty indoor unit or outdoor unit PCB (main).
Abnormality Judgment:
Continue for 90 seconds.
76
16.5.2 Compressor Tank Temperature Sensor Abnormality (H15)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the temperatures detected by the compressor tank
temperature sensor are used to determine sensor error.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
77
16.5.3 Indoor Refrigerant Liquid Temperature Sensor Abnormality (H23)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the temperatures detected by the indoor refrigerant liquid
temperature sensor are used to determine sensor error.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
78
16.5.4 Compressor Low Pressure Protection (H42)
Malfunction Decision Conditions:
During operation of heating and after 5 minutes compressor ON, when outdoor pipe temperature below -29°C or
above 26°C is detected by the outdoor pipe temperature sensor.
Malfunction Caused:
1 Dust accumulation on the outdoor unit heat exchanger.
2 Air short circuit at outdoor unit.
3 2 way valve partially closed.
4 Faulty outdoor unit fan motor.
5 Refrigerant shortage (refrigerant leakage).
6 Clogged expansion valve or strainer.
7 Faulty outdoor pipe temperature sensor.
8 Faulty outdoor unit main PCB (main).
79
16.5.5 Water Flow Switch Abnormality (H62)
Malfunction Decision Conditions:
During operation of cooling and heating, the water flow detected by the indoor water flow switch is used to
determine water flow error.
Malfunction Caused:
1 Faulty water pump.
2 Water leak in system.
3 Faulty connector connection.
4 Faulty water flow switch.
5 Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 10 seconds (but no judgment for 9 minutes after compressor startup/restart).
80
16.5.6 Outdoor High Pressure Abnormality (H64)
Malfunction Decision Conditions:
During operation of cooling and heating, when the outdoor high pressure sensor output signal is 0 Vdc or 5 Vdc.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue 4 times in 20 minutes.
81
16.5.7 Indoor Backup Heater OLP Abnormality (H70)
Malfunction Decision Conditions:
During operation of indoor backup heater, when no power supplies to indoor backup heater or OLP open circuit.
Malfunction Caused:
1 Faulty power supply connector connection.
2 Faulty connector connection.
3 Faulty indoor backup heater overload protector (OLP).
4 Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 60 seconds.
82
16.5.8 Tank Temperature Sensor Abnormality (H72)
Malfunction Decision Conditions:
When tank connection is set to ON, the temperatures detected by the tank temperature sensor are used to
determine sensor error.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
83
16.5.9 Indoor-Control Panel Communication Abnormality (H76)
Malfunction Decision Conditions:
During standby and operation of cooling and heating, indoor-control panel error occur.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty control panel.
3 Faulty indoor unit PCB (main).
84
16.5.10 Indoor/Outdoor Abnormal Communication (H90)
Malfunction Decision Conditions:
During operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is
checked whether it is normal.
Malfunction Caused:
1 Faulty outdoor unit PCB (main).
2 Faulty indoor unit PCB (main).
3 Indoor-outdoor signal transmission error due to wrong wiring.
4 Indoor-outdoor signal transmission error due to breaking of wire in the connection wires between the indoor
and outdoor units.
5 Indoor-outdoor signal transmission error due to disturbed power supply waveform.
Abnormality Judgment:
Continue for 1 minute after operation.
85
16.5.11 Tank Booster Heater OLP Abnormality (H91)
Malfunction Decision Conditions:
During operation of tank booster heater, and tank booster heater OLP open circuit.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty tank booster heater overload protector (OLP).
3 Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 60 seconds.
86
16.5.12 Unspecified Voltage between Indoor and Outdoor (H95)
Malfunction Decision Conditions:
The supply power is detected for its requirement by the indoor/outdoor transmission.
Malfunction Caused:
1 Insufficient power supply.
2 Faulty outdoor unit PCB (noise filter/main).
87
16.5.13 Outdoor High Pressure Protection (H98)
Malfunction Decision Conditions:
During operation of heating, when pressure 4.0 MPa and above is detected by outdoor high pressure sensor.
Malfunction Caused:
1 Faulty water pump.
2 Insufficient water flow rate in system.
3 Water leak in system.
4 2/3 way closed.
5 Clogged expansion valve or strainer.
6 Excessive refrigerant.
7 Faulty outdoor high pressure sensor.
8 Faulty outdoor unit PCB (main).
88
16.5.14 Indoor Freeze-up Protection (H99)
Malfunction Decision Conditions:
During anti-freezing control in cooling operation, when the indoor refrigerant liquid temperature < 0°C.
Malfunction Caused:
1 Faulty water pump.
2 Insufficient water flow rate in system.
3 Water leak in system.
4 2 way valve partially closed.
5 Clogged expansion valve or strainer.
6 Refrigerant shortage (refrigerant leakage).
7 Faulty indoor refrigerant liquid temperature sensor.
8 Faulty indoor unit PCB (main).
89
16.5.15 Outdoor High Pressure Switch Activate (F12)
Malfunction Decision Conditions:
During operation of cooling and heating, when pressure 4.5 MPa and above is detected by outdoor high pressure
switch.
Malfunction Caused:
1 Dust accumulation on the outdoor unit heat exchanger.
2 Air short circuit at outdoor unit.
3 Faulty water pump.
4 Insufficient water flow rate in system.
5 Water leak in system.
6 2/3 way valve closed.
7 Clogged expansion valve or strainer.
8 Excessive refrigerant.
9 Faulty outdoor high pressure sensor and switch.
10 Faulty outdoor unit PCB.
Abnormality Judgment:
Continue 4 times in 20 minutes.
90
16.5.16 Compressor Rotation Failure (F14)
Malfunction Decision Conditions:
A compressor rotation failure is detected by checking the compressor running condition through the position
detection circuit.
Malfunction Caused:
1 Compressor terminal disconnect.
2 Faulty outdoor unit PCB (main).
3 Faulty compressor.
Abnormality Judgment:
Continue 4 times in 20 minutes.
91
16.5.17 Outdoor Fan Motor (DC Motor) Mechanism Locked (F15)
Malfunction Decision Conditions:
The rotation speed detected by the Hall IC of the fan motor during fan motor operation is used to determine
abnormal fan motor (feedback of rotation > 2550 rpm or < 50 rpm).
Malfunction Caused:
1 Operation stop due to short circuit inside the fan motor winding.
2 Operation stop due to breaking of wire inside the fan motor.
3 Operation stop due to breaking of fan motor lead wires.
4 Operation stop due to fan motor Hall IC malfunction.
5 Operation error due to faulty outdoor unit PCB.
Abnormality Judgment:
Continue 2 times in 30 minutes.
92
16.5.18 Input Over Current Detection (F16)
Malfunction Decision Conditions:
During operation of cooling and heating, when outdoor current above 27.9 A is detected by the current
transformer (CT) in the outdoor unit PCB.
Malfunction Caused:
1 Excessive refrigerant.
2 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue 3 times in 20 minutes.
93
16.5.19 Compressor Overheating (F20)
Malfunction Decision Conditions:
During operation of cooling and heating, when temperature above 112°C is detected by the compressor tank
temperature sensor.
Malfunction Caused:
1 Faulty compressor tank temperature sensor.
2 2/3 way valve closed.
3 Refrigerant shortage (refrigerant leakage).
4 Clogged expansion valve or strainer.
5 Faulty outdoor unit PCB (main).
6 Faulty compressor.
Abnormality Judgment:
Continue 4 times in 30 minutes.
94
16.5.20 IPM Overheating (F22)
Malfunction Decision Conditions:
During operation of cooling and heating, when temperature 95°C is detected by the outdoor IPM temperature
sensor.
Malfunction Caused:
1 Faulty outdoor unit fan motor.
2 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue 3 times in 30 minutes.
95
16.5.21 Output Over Current Detection (F23)
Malfunction Decision Conditions:
During operation of cooling and heating, when outdoor DC current is above 40.1 ± 5.0 A (for: UD07~09CE) OR
44.7 ± 5.0 A (for: UD12~16CE) is detected by the IPM DC Peak sensing circuitry in the outdoor unit PCB (main).
Malfunction Caused:
1 Faulty outdoor unit PCB (main).
2 Faulty compressor.
Abnormality Judgment:
Continue for 7 times.
96
16.5.22 Refrigeration Cycle Abnormality (F24)
Malfunction Decision Conditions:
1 During operation of cooling and heating, compressor frequency > Frated.
2 During operation of cooling and heating, running current: 0.65 A < I < 1.65 A.
3 During operation of cooling, water inlet temperature - indoor refrigerant liquid temperature < 5°C.
4 During operation of heating, indoor refrigerant liquid temperature - water inlet temperature < 5°C.
Malfunction Caused:
1 Faulty water inlet or indoor refrigerant liquid temperature sensors.
2 2/3 way valve closed.
3 Refrigerant shortage (refrigerant leakage).
4 Clogged expansion valve or strainer.
5 Faulty outdoor unit PCB (main).
6 Poor compression of compressor.
Abnormality Judgment:
Continue 2 times in 20 minutes.
97
16.5.23 Four Way Valve Abnormality (F25)
Malfunction Decision Conditions:
1 During heating operation, when the indoor pipe temperature of thermostat ON indoor unit < 0°C.
2 During cooling operation, when the indoor pipe temperature of thermostat ON indoor unit > 45°C.
Malfunction Caused:
1 Faulty sensor.
2 Faulty connector connection.
3 Faulty outdoor unit PCB (noise filter/main).
4 Faulty four way valve.
Abnormality Judgment:
Continue 4 times in 30 minutes.
98
16.5.24 Outdoor High Pressure Switch Abnormal (F27)
Malfunction Decision Conditions:
During compressor stop, and outdoor high pressure switch is remain opened.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty switch.
3 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue for 1 minute.
99
16.5.25 Outdoor Air Temperature Sensor Abnormality (F36)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature
sensor are used to determine sensor error.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
100
16.5.26 Indoor Water Inlet Temperature Sensor Abnormality (F37)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the temperatures detected by the indoor water inlet
temperature sensor are used to determine sensor error.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
101
16.5.27 Outdoor Discharge Pipe Temperature Sensor Abnormality (F40)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe
temperature sensor are used to determine sensor error.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
102
16.5.28 Power Factor Correction (PFC) Abnormality (F41)
Malfunction Decision Conditions:
During operation of cooling and heating, when the PFC protection circuitry in the outdoor unit PCB (main) senses
abnormal high DC voltage level.
Malfunction Caused:
1 Power supply surge.
2 Compressor windings not uniform.
3 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue 4 times in 10 minutes.
103
16.5.29 Outdoor Pipe Temperature Sensor Abnormality (F42)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature
sensor are used to determine sensor error.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
104
16.5.30 Outdoor Defrost Temperature Sensor Abnormality (F43)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the temperatures detected by the outdoor defrost
temperature sensor are used to determine sensor error.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
105
16.5.31 Indoor Water Outlet Temperature Sensor Abnormality (F45)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the temperatures detected by the indoor water outlet
temperature sensor are used to determine sensor errors.
Malfunction Caused:
1 Faulty connector connection.
2 Faulty sensor.
3 Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 5 seconds.
106
16.5.32 Outdoor Current Transformer Open Circuit (F46)
Malfunction Decision Conditions:
A current transformer (CT) open circuit is detected by checking the compressor running frequency (
frequency) and CT detected input current (< 0.65 A) for continuously 20 seconds.
Malfunction Caused:
1 CT defective.
2 Faulty outdoor unit PCB (main).
3 Compressor defective (low compression).
Abnormality Judgment:
Continue 3 times in 20 minutes.
107
rated
16.5.33 Cooling High Pressure Overload Protection (F95)
Malfunction Decision Conditions:
During operation of cooling, when pressure 4.0 MPa and above is detected by outdoor high pressure sensor.
Malfunction Caused:
1 Dust accumulation in the outdoor unit heat exchanger.
2 Air short circuit at outdoor unit.
3 2 way valve closed.
4 Faulty outdoor unit fan motor.
5 Clogged expansion valve or strainer.
6 Excessive refrigerant.
7 Faulty outdoor high pressure sensor.
8 Faulty outdoor unit PCB (main).
108
17. Disassembly and Assembly Instructions
WARNING
High Voltage are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding
with repair work. Failure to heed this caution may result in electric shocks.
17.1 To Remove Front Plate
Please follow the steps below for take out front plate. Before removing the front plate of indoor unit, always
switch off all power supply (i.e. indoor unit power supply, heater power supply and boiler tank power supply).
1 Remove the 2 mounting screws which located at bottom of the front plate and 1 mounting screw at the front
of the plate.
2 Gently pull the lower section of the front plate towards you to remove the front plate from left and right hooks.
3 Hold the left edge and right edge of front plate to lift up front plate from hooks.
17.2 To Remove Cabinet
109
17.3 To Remove Pressure Gauge
17.4 To Remove Control Panel
110
17.5 To Remove RCCB
17.6 To Remove Transformer and Electronic Controller Board
111
17.7 To Remove Pressure Relief Valve, Flow Switch, Water Pump and Bottle
Complete
When reinstall the water pipe, use grease or water at the joining.
112
When reinstall the water pipe, use grease or water at the joining.
When reinstall the water pipe, use grease or water at the joining.
113
18. Technical Data
18.1 Operation Characteristics
18.1.1 WH-SDC03E3E5 WH-UD03EE5
Heating Characteristics at Different Outdoor Air Temperature
Condition
Outdoor air temperature : 7°C (DBT), 6°C (WBT)
Indoor water inlet temperature : 30°C
Indoor water outlet temperature : 35°C
Piping length : 7 m
3.400
Capacity (kW)
3.300
3.200
3.100
3.000
-15 -13 -11 -9
-7
-5
-3
-1
1
3
5
7
9
11 13 15 17 19 21 23 25
Outdoor Air Temperature (°C)
1.400
Input Power (kW)
1.200
1.000
0.800
0.600
0.400
-15 -13 -11 -9
-7
-5
-3
-1
1
3
5
7
9
11 13 15 17 19 21 23 25
Outdoor Air Temperature (°C)
114
Cooling Characteristics at Different Outdoor Air Temperature
Condition
Outdoor air temperature : 35°C (DBT), -°C (WBT)
Indoor water inlet temperature : 12°C
Indoor water outlet temperature : 7°C
Piping length : 7 m
3.400
Capacity (kW)
3.200
3.000
2.800
2.600
2.400
18
20
22
24
26
28
30
32
34
36
38
40
42
44
36
38
40
42
44
Outdoor Air Temperature (°C)
Input Power (kW)
1.200
1.000
0.800
0.600
0.400
18
20
22
24
26
28
30
32
34
Outdoor Air Temperature (°C)
115
Heating Characteristics at Different Piping Length
Condition
Outdoor air temperature : 7°C (DBT), 6°C (WBT)
Indoor water inlet temperature : 30°C
Indoor water outlet temperature : 35°C
Piping length : 7 m
Capacity (kW)
3.300
3.200
3.100
3.000
3
4
5
6
7
8
9
10
11
12
13
14
15
12
13
14
15
Outdoor Air Temperature (°C)
Input Power (kW)
0.650
0.640
0.630
0.620
3
4
5
6
7
8
9
10
11
Outdoor Air Temperature (°C)
116
Cooling Characteristics at Different Piping Length
Condition
Outdoor air temperature : 35°C (DBT), -°C (WBT)
Indoor water inlet temperature : 12°C
Indoor water outlet temperature : 7°C
Piping length : 7 m
Capacity (kW)
3.300
3.200
3.100
3.000
3
4
5
6
7
8
9
10
11
12
13
14
15
12
13
14
15
Outdoor Air Temperature (°C)
Input Power (kW)
1.050
1.030
1.010
0.990
3
4
5
6
7
8
9
10
11
Outdoor Air Temperature (°C)
117
18.1.2 WH-SDC05E3E5 WH-UD05EE5
Heating Characteristics at Different Outdoor Air Temperature
Condition
Outdoor air temperature : 7°C (DBT), 6°C (WBT)
Indoor water inlet temperature : 30°C
Indoor water outlet temperature : 35°C
Piping length : 7 m
5.100
Capacity (kW)
4.900
4.700
4.500
4.300
4.100
-15 -13 -11 -9
-7
-5
-3
-1
1
3
5
7
9
11 13 15 17 19 21 23 25
Outdoor Air Temperature (°C)
2.000
Input Power (kW)
1.800
1.600
1.400
1.200
1.000
0.800
-15 -13 -11 -9
-7
-5
-3
-1
1
3
5
7
9
11 13 15 17 19 21 23 25
Outdoor Air Temperature (°C)
118
Cooling Characteristics at Different Outdoor Air Temperature
Condition
Outdoor air temperature : 35°C (DBT), -°C (WBT)
Indoor water inlet temperature : 12°C
Indoor water outlet temperature : 7°C
Piping length : 7 m
5.300
Capacity (kW)
4.800
4.300
3.800
3.300
18
20
22
24
26
28
30
32
34
36
38
40
42
44
36
38
40
42
44
Outdoor Air Temperature (°C)
1.800
Input Power (kW)
1.600
1.400
1.200
1.000
0.800
18
20
22
24
26
28
30
32
34
Outdoor Air Temperature (°C)
119
Heating Characteristics at Different Piping Length
Condition
Outdoor air temperature : 7°C (DBT), 6°C (WBT)
Indoor water inlet temperature : 30°C
Indoor water outlet temperature : 35°C
Piping length : 7 m
5.100
Capacity (kW)
5.000
4.900
4.800
4.700
3
4
5
6
7
8
9
10
11
12
13
14
15
12
13
14
15
Outdoor Air Temperature (°C)
Input Power (kW)
1.090
1.080
1.070
1.060
1.050
3
4
5
6
7
8
9
10
11
Outdoor Air Temperature (°C)
120
Cooling Characteristics at Different Piping Length
Condition
Outdoor air temperature : 35°C (DBT), -°C (WBT)
Indoor water inlet temperature : 12°C
Indoor water outlet temperature : 7°C
Piping length : 7 m
4.600
Capacity (kW)
4.500
4.400
4.300
4.200
3
4
5
6
7
8
9
10
11
12
13
14
15
12
13
14
15
Outdoor Air Temperature (°C)
Input Power (kW)
1.680
1.660
1.640
1.620
1.600
3
4
5
6
7
8
9
10
11
Outdoor Air Temperature (°C)
121
18.2 Heating Capacity Table
18.2.1 WH-SDC03E3E5 WH-UD03EE5
Water Out
Outdoor Air
-15
-7
2
7
16
25
30
35
40
45
50
55
Input
Input
Input
Input
Input
Input
Capacity
Capacity
Capacity
Capacity
Capacity
Capacity
Power
Power
Power
Power
Power
Power
3200
1260
3200
1390
3100
1520
3000
1640
2800
1780
2750
1920
3200
1080
3200
1190
3200
1340
3200
1480
3200
1670
3200
1860
3200
820
3200
900
3200
1030
3200
1160
3200
1330
3200
1490
3200
580
3200
640
3200
770
3200
890
3200
1050
3200
1200
3200
500
3200
550
3200
640
3200
720
3200
860
3200
990
3200
420
3200
460
3200
550
3200
630
3200
730
3200
820
18.2.2 WH-SDC05E3E5 WH-UD05EE5
Water Out
Outdoor Air
-15
-7
2
7
16
25
30
35
40
45
50
55
Input
Input
Input
Input
Input
Input
Capacity
Capacity
Capacity
Capacity
Capacity
Capacity
Power
Power
Power
Power
Power
Power
4200
1750
4200
1940
3800
1960
3400
1980
3200
2050
3000
2120
4200
1460
4200
1620
4000
1720
3800
1820
3700
1950
3550
2080
4200
1220
4200
1350
4200
1500
4200
1650
4150
1860
4100
2070
5000
970
5000
1080
5000
1280
5000
1480
5000
1680
5000
1890
5000
830
5000
920
5000
1150
5000
1380
5000
1530
5000
1680
5000
740
5000
820
5000
1020
5000
1220
5000
1350
5000
1490
18.3 Cooling Capacity Table
18.3.1 WH-SDC03E3E5 WH-UD03EE5
OD
18
25
35
43
Water Out 7°C
Q
IP
2400
420
3200
730
3200
1040
2900
1200
Water Out 14°C
Q
IP
4400
730
4100
860
3900
1070
3500
1200
Water Out 18°C
Q
IP
3700
490
3500
590
3300
740
3000
880
18.3.2 WH-SDC05E3E5 WH-UD05EE5
OD
18
25
35
43
Water Out 7°C
Q
IP
4500
890
5000
1430
4500
1670
3300
1530
Water Out 14°C
Q
IP
5000
900
6300
1500
5500
1680
4100
1520
122
Water Out 18°C
Q
IP
5700
900
5400
1060
5000
1330
4400
1530
18.4 Hydraulic Pump Performance
123
19. Exploded View and Replacement Parts List
19.1 Indoor Unit
Note:
š The above exploded view is for the purpose of parts disassembly and replacement.
š The non-numbered parts are not kept as standard service parts.
124
<Model: WH-SDC03E3E5 WH-SDC05E3E5>
REF. NO.
QTY.
WH-SDC03E3E5
WH-SDC05E3E5
1
BASE PAN
DESCRIPTION & NAME
1
CWD521279
←
2
HOT WATER COIL-COMPLETE
1
CWB90C1090
←
3
RECEIVER
1
CWB141039
←
4
FLOAT (FLOW SWITCH)
1
CWB621034
←
6
FLARE NUT (7/8)
1
CWT251032
←
7
FLARE NUT (5/8)
1
CWT251063
←
9
PUMP
1
CWB532108
←
10
PACKING (O-RING) I.D 32mm
2
CWB811082
←
11
PACKING (O-RING) I.D 13.8mm
2
CWB811022
←
12
RETAINING RING D:22mm
2
CWH581007
←
13
VALVE BODY (AIR TO WATER)
1
CWB621092
←
16
BOTTLE COMPLETE
1
CWH90C0029
←
17
HEATER ASS'Y
1
CWA34K1026
←
18
SOUND PROOF MATERIAL
1
CWG302595
←
REMARK
19
THERMOSTAT
2
CWA151065
←
O
20
ELECTRONIC CONTROLLER - MAIN
1
CWA73C7032
CWA73C7033
O
21
TERMINAL BOARD ASS'Y
1
CWA28K1217
←
O
22
TERMINAL BOARD ASS'Y
1
CWA28K1232
←
O
25
TERMINAL BOARD ASS'Y
1
CWA28K1229
←
O
26
TERMINAL BOARD ASS'Y
1
CWA28K1230
←
O
27
ELECTRO MAGNETIC SWITCH
1
K6C1AYY00004
←
O
28
TERMINAL BOARD ASS'Y
1
CWA28K1231
←
O
29
RESIDUAL CURRENT CIRCUIT BREAKER
2
K5KYYAY00003
←
O
30
TRANSFORMER - COMPLETE
1
CWA40C1096
←
O
31
SENSOR - COMPLETE
1
CWA50C2762
←
O
32
REMOTE CONTROL COMPLETE
1
CWA75C4018
←
O
33
PRESSURE GAUGE
1
CWB070001
←
O
34
PRESSURE RELIEF VALVE
1
CWB621094
←
35
CABINET
1
CWE001050A
←
36
HANDLE
2
CWE161008
←
37
CABINET FRONT PLATE
1
CWE061265A
←
38
INSTALLING HOLDER
1
CWH361103A
←
39
OPERATING INSTRUCTION
1
CWF568783
←
40
INSTALLATION INSTRUCTION
1
CWF615535
←
42
ACCESSORY - COMPLETE
1
CWH82C1754
←
43
OPERATING INSTRUCTION
1
CWF568791
←
Note:
š All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488).
š “O” marked parts are recommended to be kept in stock.
125
19.2 Outdoor Unit
Note:
š The above exploded view is for the purpose of parts disassembly and replacement.
š The non-numbered parts are not kept as standard service parts.
126
<Model: WH-UD03EE5 WH-UD05EE5>
REF. NO.
QTY.
WH-UD03EE5
WH-UD05EE5
1
CHASSIS ASS'Y
DESCRIPTION & NAME
1
CWD52K1317
←
2
SOUND PROOF MATERIAL
1
CWG302742
←
3
FAN MOTOR BRACKET
1
CWD541167
←
4
SCREW - FAN MOTOR BRACKET
2
CWH551217
←
5
FAN MOTOR,DC 40W 3PH
1
ARS6411AC
←
6
SCREW - FAN MOTOR MOUNT
4
CWH55252J
←
7
PROPELLER FAN ASSY
1
CWH03K1066
←
8
NUT - PROPELLER FAN
1
CWH56053J
←
9
COMPRESSOR
1
5RD132XBE21
←
10
ANTI - VIBRATION BUSHING
3
CWH50077
←
11
NUT - COMPRESSOR MOUNT
3
CWH56000J
←
12
CONDENSER COMPLETE
1
CWB32C3547
←
14
DISCHARGE MUFFLER
1
CWB121065
←
15
HOLDER - COUPLING
1
CWH351233
←
16
2-WAYS VALVE
1
CWB021606
←
17
3-WAYS VALVE
1
CWB011670
←
19
REACTOR
1
G0C193J00004
←
20
TERMINAL COVER
1
CWH171039A
←
21
NUT - TERMINAL COVER
1
CWH7080300J
←
22
SOUND - PROOF BOARD
1
CWH151345
←
23A
SOUND PROOF MATERIAL
1
CWG302741
←
23B
SOUND PROOF MATERIAL
1
CWG302762
←
23C
SOUND PROOF MATERIAL
1
CWG302788
←
SENSOR - COMPLETE
1
CWA50C2894
←
24
REMARK
O
O
O
O
25
SENSOR - COMPLETE
1
CWA50C2656
←
O
26
ELECTRONIC CONTROLLER - MAIN
1
CWA73C7007R
CWA73C7008R
O
27
TERMINAL BOARD ASS'Y
1
CWA28K1036J
←
O
28
CABINET SIDE PLATE CO.
1
CWE04C1411
←
29
SENSOR - COMPLETE
1
CWA50C2893
←
30
CABINET SIDE PLATE (L)
1
CWE041579A
←
31
CABINET FRONT PLATE - CO.
1
CWE06C1441
←
32
CABINET TOP PLATE
1
CWE031148A
←
33
PLATE - C.B.COVER
1
CWH131470A
←
34
CONTROL BOARD COVER - COMPLETE
1
CWH13C1253
←
35
CONTROL BOARD COVER
1
CWH131473
←
38
4-WAYS VALVE
1
CWB001037J
←
39
V-COIL COMPLETE
1
CWA43C2431
←
40
WIRE NET
1
CWD041166A
←
41
HOLDER - SENSOR
1
CWH32075
←
42
HOLDER - SENSOR
2
CWH32143
←
43
CRANKCASE HEATER
1
CWA341044
←
48
STRAINER
2
CWB11094
←
49
EXPANSION VALVE
1
CWB051016J
←
O
51
V-COIL COMPLETE
1
CWA43C2257
←
O
52
DISCHARGE MUFFLER
1
CWB121063
←
53
PRESSURE SWITCH
1
CWA50C2570
←
54
ACCESSORY COMP. (DRAIN ELBOW)
1
CWG87C2030
←
O
O
O
Note:
š All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488).
š “O” marked parts are recommended to be kept in stock.
[PAPAMY] Printed in Malaysia
FB0912-0
127