Mitsubishi Electric PWFY-P100VM-E-BU PWFY-P100VM-E1

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Mitsubishi Electric PWFY-P100VM-E-BU PWFY-P100VM-E1 | Manualzz
Contents
1 Read Before Servicing ................................................................
[1] Items to Be Checked ..............................................................
[2] Necessary Tools and Materials ..............................................
[3] Piping Materials ......................................................................
[4] Storage of Piping ....................................................................
[5] Piping Processing ..................................................................
[6] Brazing....................................................................................
[7] Air Tightness Test ....................................................................
[8] Vacuum Drying (Evacuation) ..................................................
[9] Refrigerant Charging ..............................................................
[10] Remedies to be taken in case of a Refrigerant Leak ............
[11] Characteristics of the Conventional and the New Refrigerants ..
[12] Notes on Refrigerating Machine Oil........................................
7
7
8
9
11
11
12
13
14
15
15
16
17
2 Restrictions ..................................................................................
[1] Types and Maximum allowable Length of Cables ..................
[2] Types of Switch Setting and Address Setting ........................
[3] Examples of system connection ............................................
[4] Restrictions on piping length ..................................................
18
18
19
20
21
3 Components of the Unit ..............................................................
[1] Appearance of the Components and Refrigerant Circuit........
[2] Control Box ............................................................................
[3] Circuit Board ..........................................................................
22
22
24
26
4 Remote Controller ........................................................................ 29
[1] Functions and Specifications of MA Remote Controller.................. 29
[2] Interlocking Setting via the MA Remote Controller ........................ 30
5 Electrical Wiring Diagram ............................................................
[1] PWFY-P100VM-E-BU ............................................................
[2] PWFY-P100, 200VM-E-AU, PWFY-P100, 200VM-E1-AU ......
[3] PWFY-P100, 200VM-E2-AU ..................................................
32
32
33
34
6 Refrigerant Circuit ........................................................................
[1] Refrigerant Circuit Diagram ....................................................
[2] Pump interlock ........................................................................
[3] Functions of Principal Parts....................................................
35
35
36
37
7 Control.......................................................................................... 39
[1] Dip Switch Functions and Their Factory Settings .................. 39
8 Test Run ......................................................................................
[1] Check Items before Test Run..................................................
[2] Test Run Method ....................................................................
[3] Refrigerant ..............................................................................
[4] Symptoms that do not Signify Problems ................................
[5] Standard operation data ........................................................
42
42
42
42
43
43
9 Troubleshooting ............................................................................
[1] Check Code List ....................................................................
[2] Responding to Error Display on the Remote Controller ........
[3] Troubleshooting Principal Parts ..............................................
[4] Maintenance ..........................................................................
44
44
45
61
75
0 LED display .................................................................................. 80
[1] LED Monitor Display .............................................................. 80
Safety Precautions
Before installing the unit, thoroughly read the following safety precautions.
Observe these safety precautions for your safety.
WARNING
This symbol is intended to alert the user to the presence of important instructions that must be followed to avoid
the risk of serious injury or death.
CAUTION
This symbol is intended to alert the user to the presence of important instructions that must be followed to avoid
the risk of serious injury or damage to the unit.
After reading this manual, give it to the user to retain for future reference.
Keep this manual for easy reference. When the unit is moved or repaired, give this manual to those who provide these
services.
When the user changes, make sure that the new user receives this manual.
WARNING
Do not use refrigerant other than the type indicated in the
manuals provided with the unit and on the nameplate.
Do not make any modifications or alterations to the
unit. Consult your dealer for repair.
Doing so may cause the unit or pipes to burst, or result in
explosion or fire during use, during repair, or at the time of
disposal of the unit.
It may also be in violation of applicable laws.
MITSUBISHI ELECTRIC CORPORATION cannot be held
responsible for malfunctions or accidents resulting from the
use of the wrong type of refrigerant.
Improper repair may result in water leakage, electric shock,
smoke, and/or fire.
Do not touch the refrigerant pipes and Water
pipes.
Improper handling may result in injury.
In the event of a refrigerant leak, thoroughly ventilate
the room.
Do not use steel pipes as water pipes.
Copper pipes are recommended.
If refrigerant gas leaks and comes in contact with an open
flame, poisonous gases will be produced.
The water circuit should be a closed circuit.
Properly install the unit according to the instructions
in the installation manual.
Ask your dealer or a qualified technician to install the
unit.
Improper installation may result in water leakage, electric
shock, smoke, and/or fire.
Improper installation by the user may result in water leakage, electric shock, smoke, and/or fire.
Have all electrical work performed by an authorized
electrician according to the local regulations and instructions in this manual, and a dedicated circuit must
be used.
Properly install the unit on a surface that can withstand the weight of the unit.
Unit installed on an unstable surface may fall and cause injury.
Insufficient capacity of the power supply circuit or improper
installation may result in malfunctions of the unit, electric
shock, smoke, and/or fire.
Only use specified cables. Securely connect each cable so that the terminals do not carry the weight of the
cable.
Improperly connected or fixed cables may produce heat
and start a fire.
Take appropriate safety measures against strong
winds and earthquakes to prevent the unit from falling.
If the unit is not installed properly, the unit may fall and
cause serious injury to the person or damage to the unit.
-1-
WARNING
Securely attach the terminal block cover (panel) to the
unit.
After completing the service work, check for a gas
leak.
If the terminal block cover (panel) is not installed properly,
dust and/or water may infiltrate and pose a risk of electric
shock, smoke, and/or fire.
If leaked refrigerant is exposed to a heat source, such as a
fan heater, stove, or electric grill, poisonous gases may be
produced.
Only use the type of refrigerant that is indicated on the
unit when installing or reinstalling the unit.
Do not try to defeat the safety features of the unit.
Infiltration of any other type of refrigerant or air into the unit
may adversely affect the refrigerant cycle and may cause
the pipes to burst or explode.
Forced operation of the pressure switch or the temperature
switch by defeating the safety features of these devices, or
the use of accessories other than the ones that are recommended by MITSUBISHI may result in smoke, fire, and/or
explosion.
When installing the unit in a small room, exercise caution and take measures against leaked refrigerant
reaching the limiting concentration.
Only use accessories recommended by MITSUBISHI.
Ask a qualified technician to install the unit. Improper installation by the user may result in water leakage, electric
shock, smoke, and/or fire.
Consult your dealer with any questions regarding limiting
concentrations and for precautionary measures before installing the unit. Leaked refrigerant gas exceeding the limiting concentration causes oxygen deficiency.
Control box houses high-voltage parts.
When opening or closing the front panel of the control box,
do not let it come into contact with any of the internal components. Before inspecting the inside of the control box,
turn off the power, keep the unit off for at least 10 minutes,
and confirm that the voltage between FT-P and FT-N on
INV Board has dropped to DC20V or less. (It takes about
10 minutes to discharge electricity after the power supply is
turned off.)
Consult your dealer or a specialist when moving or reinstalling the unit.
Improper installation may result in water leakage, electric
shock, and/or fire.
-2-
Precautions for handling units for use with R410A
CAUTION
Do not use the existing refrigerant piping.
Use a vacuum pump with a reverse-flow check valve.
A large amount of chlorine that may be contained in the residual refrigerant and refrigerating machine oil in the existing piping may cause the refrigerating machine oil in the
new unit to deteriorate.
R410A is a high-pressure refrigerant and can cause the
existing pipes to burst.
If a vacuum pump that is not equipped with a reverse-flow
check valve is used, the vacuum pump oil may flow into the
refrigerant cycle and cause the refrigerating machine oil to
deteriorate.
Prepare tools for exclusive use with R410A. Do not use
the following tools if they have been used with the conventional refrigerant (gauge manifold, charging hose,
gas leak detector, reverse-flow check valve, refrigerant
charge base, vacuum gauge, and refrigerant recovery
equipment.).
Use refrigerant pipes made of phosphorus deoxidized
copper. Keep the inner and outer surfaces of the pipes
clean and free of such contaminants as sulfur, oxides,
dust, dirt, shaving particles, oil, and water.
If the refrigerant or the refrigerating machine oil left on
these tools are mixed in with R410A, it may cause the refrigerating machine oil to deteriorate.
Infiltration of water may cause the refrigerating machine
oil to deteriorate.
Gas leak detectors for conventional refrigerants will not
detect an R410A leak because R410A is free of chlorine.
These types of contaminants inside the refrigerant pipes
may cause the refrigerant oil to deteriorate.
Store the pipes to be installed indoors, and keep both
ends of the pipes sealed until immediately before brazing. (Keep elbows and other joints wrapped in plastic.)
Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerating machine oil to deteriorate or
cause the unit to malfunction.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of the refrigerant will change, and the unit may experience power loss.
Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flanges.
Exercise special care when handling the tools for use
with R410A.
Infiltration of a large amount of mineral oil may cause the refrigerating machine oil to deteriorate.
Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerating machine oil to deteriorate.
Charge liquid refrigerant (as opposed to gaseous refrigerant) into the system.
Only use refrigerant R410A.
If gaseous refrigerant is charged into the system, the composition of the refrigerant in the cylinder will change and
may result in performance loss.
The use of other types of refrigerant that contain chlorine
(i.e. R22) may cause the refrigerating machine oil to deteriorate.
-3-
Before installing the unit
WARNING
Do not install the unit where a gas leak may occur.
When installing the unit in a hospital, take appropriate
measures to reduce noise interference.
If gaseous refrigerant leaks and piles up around the unit, it
may be ignited.
High-frequency medical equipment may interfere with the
normal operation of the air conditioner or vice versa.
Do not use the unit to keep food items, animals, plants,
artifacts, or for other special purposes.
Do not install the unit on or over things that cannot get
wet.
The unit is not designed to preserve food products.
When the humidity level exceeds 80% or if the drainage
system is clogged, the indoor unit may drip water. Drain water is also discharged from the outdoor unit. Install a centralized drainage system if necessary.
Do not use the unit in an unusual environment.
Do not install the unit where a large amount of oil or steam
is present or where acidic or alkaline solutions or chemical
sprays are used frequently. Doing so may lead to a remarkable drop in performance, electric shock, malfunctions, smoke, and/or fire.
The presence of organic solvents or corrosive gas (i.e.
ammonia, sulfur compounds, and acid) may cause gas
leakage or water leakage.
-4-
Before installing the unit (moving and reinstalling the unit) and performing
electrical work
CAUTION
Properly ground the unit.
Periodically check the installation base for damage.
Do not connect the grounding wire to a gas pipe, water pipe,
lightning rod, or grounding wire from a telephone pole. Improper grounding may result in electric shock, smoke, fire,
and/or malfunction due to noise interference.
If the unit is left on a damaged platform, it may fall and
cause injury.
Properly install the drain pipes according to the instructions in the installation manual. Keep them insulated to avoid dew condensation.
Do not put tension on the power supply wires.
Improper plumbing work may result in water leakage and
damage to the furnishings.
If tension is put on the wires, they may break and result in
excessive heat, smoke, and/or fire.
Exercise caution when transporting products.
Install an earth leakage breaker to avoid the risk of
electric shock.
Products weighing more than 20 kg should not be carried
alone.
Do not carry the product by the PP bands that are used on
some products.
Failure to install an earth leakage breaker may result in
electric shock, smoke, and/or fire.
Use the kind of power supply wires that are specified
in the installation manual.
Properly dispose of the packing materials.
The use of wrong kind of power supply wires may result in
current leak, electric shock, and/or fire.
Nails and wood pieces in the package may pose a risk of
injury.
Plastic bags may pose a risk of choking hazard to children. Tear plastic bags into pieces before disposing of
them.
Use breakers and fuses (current breaker, remote
switch <switch + Type-B fuse>, moulded case circuit
breaker) with the proper current capacity.
The use of wrong capacity fuses, steel wires, or copper
wires may result in malfunctions, smoke, and/or fire.
Do not spray water on the unit or immerse the air
conditioner in water.
Otherwise, electric shock and/or fire may result.
When handling units, always wear protective gloves to
protect your hands from metal parts and high-temperature parts.
-5-
Before the test run
CAUTION
Turn on the unit at least 12 hours before the test run.
Do not operate the unit without panels and safety
guards.
Keep the unit turned on throughout the season. If the unit is
turned off in the middle of a season, it may result in malfunctions.
Rotating, high-temperature, or high-voltage parts on the unit
pose a risk of burns and/or electric shock.
To avoid the risk of electric shock or malfunction of the
unit, do not operate switches with wet hands.
Do not turn off the power immediately after stopping
the operation.
Keep the unit on for at least five minutes before turning off
the power to prevent water leakage or malfunction.
Do not touch the refrigerant pipes with bare hands during and immediately after operation.
Do not operate the unit without the air filter.
During or immediately after operation, certain parts of the
unit such as pipes and compressor may be either very cold
or hot, depending on the state of the refrigerant in the unit
at the time. To reduce the risk of frost bites and burns, do
not touch these parts with bare hands.
Dust particles may build up in the system and cause malfunctions.
-6-
¡ Read Before Servicing
[1] Items to Be Checked
1. Check the type of refrigerant used in the system to be serviced.
Refrigerant Type
PWFY-P100, 200VM-E-AU
PWFY-P100VM-E-BU PWFY-P100, 200VM-E1-AU
PWFY-P100, 200VM-E2-AU
Between unit and BC controller
R410A
R410A
R134a
Inside the unit
2. Check the symptoms exhibited by the unit to be serviced.
Refer to this service handbook for symptoms relating to the refrigerant cycle.
3. Thoroughly read the safety precautions at the beginning of this manual.
4. Preparing necessary tools: Prepare a set of tools to be used exclusively with each type of refrigerant.
Refer to "Necessary Tools and Materials" for information on the use of tools.(page 8)
5. Verification of the connecting pipes: Verify the type of refrigerant used for the unit to be moved or replaced.
Use refrigerant pipes made of phosphorus deoxidized copper. Keep the inner and outer surfaces of the pipes clean and free
of such contaminants as sulfur, oxides, dust, dirt, shaving particles, oil, and water.
These types of contaminants inside the refrigerant pipes may cause the refrigerant oil to deteriorate.
6. If there is a leak of gaseous refrigerant and the remaining refrigerant is exposed to an open flame, a poisonous gas
hydrofluoric acid may form. Keep workplace well ventilated.
CAUTION
Install new pipes immediately after removing old ones to keep moisture out of the refrigerant circuit.
The use of refrigerant that contains chloride, such as R22, will cause the refrigerating machine oil to deteriorate.
-7-
[2] Necessary Tools and Materials
Prepare the following tools and materials necessary for installing and servicing the unit.
Tools for use with R410A (Adaptability of tools that are for use with R22 or R407C)
1. To be used exclusively with R410A (not to be used if used with R22 or R407C)
Tools/Materials
Use
Notes
Gauge Manifold
Evacuation and refrigerant charging
Higher than 5.09MPa[738psi] on the
high-pressure side
Charging Hose
Evacuation and refrigerant charging
The hose diameter is larger than the
conventional model.
Refrigerant Recovery Cylinder
Refrigerant recovery
Refrigerant Cylinder
Refrigerant charging
The refrigerant type is indicated. The
cylinder is pink.
Charging Port on the Refrigerant Cylinder Refrigerant charging
The charge port diameter is larger
than that of the current port.
Flare Nut
Use Type-2 Flare nuts.
Connection of the unit with the pipes
2. Tools and materials that may be used with R410A with some restrictions
Tools/Materials
Use
Notes
Gas Leak Detector
Gas leak detection
The ones for use with HFC refrigerant
may be used.
Vacuum Pump
Vacuum drying
May be used if a check valve adapter
is attached.
Flare Tool
Flare processing
Flare processing dimensions for the
piping in the system using the new refrigerant differ from those of R22. Refer to next page.
Refrigerant Recovery Equipment
Refrigerant recovery
May be used if compatible with R410A
or R134a
3. Tools and materials that are used with R22 or R407C that may also be used with R410A
Tools/Materials
Use
Vacuum Pump with a Check Valve
Vacuum drying
Bender
Bending pipes
Torque Wrench
Tightening flare nuts
Pipe Cutter
Cutting pipes
Welder and Nitrogen Cylinder
Welding pipes
Refrigerant Charging Meter
Refrigerant charging
Vacuum Gauge
Vacuum level check
Notes
Only the flare processing dimensions
for pipes that have a diameter of
ø12.70 (1/2") and ø15.88 (5/8") have
been changed.
4. Tools and materials that must not be used with R410A
Tools/Materials
Charging Cylinder
Use
Refrigerant charging
Notes
Prohibited to use
Tools for R410A must be handled with special care to keep moisture and dust from infiltrating the cycle.
-8-
[3] Piping Materials
Do not use the existing piping!
1. Copper pipe materials
O-material (Annealed)
Soft copper pipes (annealed copper pipes). They can easily be bent with hands.
1/2H-material (Drawn)
Hard copper pipes (straight pipes). They are stronger than the O-material (Annealed)
at the same radial thickness.
The distinction between O-materials (Annealed) and 1/2H-materials (Drawn) is made based on the strength of the pipes themselves.
O-materials (Annealed) can easily be bent with hands.
1/2H-materials (Drawn) are considerably stronger than O-material (Annealed) at the same thickness.
2. Types of copper pipes
Maximum working pressure
Refrigerant type
4.30 MPa [624psi]
R410A and R134a
3. Piping materials/Radial thickness
Use refrigerant pipes made of phosphorus deoxidized copper.
The operation pressure of the units that use R410A is higher than that of the units that use R22.
Use pipes that have at least the radial thickness specified in the chart below.
(Pipes with a radial thickness of 0.7 mm or less may not be used.)
Pipe size (mm[in])
Radial thickness (mm)
ø6.35
[1/4"]
0.8t
ø9.52
[3/8"]
0.8t
ø12.7
[1/2"]
0.8t
ø15.88
[5/8"]
1.0t
ø19.05
[3/4"]
1.0t
ø22.2
[7/8"]
1.0t
ø25.4
[1"]
1.0t
ø28.58
[1-1/8"]
1.0t
ø31.75
[1-1/4"]
1.1t
ø34.93
[1-3/8"]
1.1t
ø41.28
[1-5/8"]
1.2t
Type
O-material (Annealed)
1/2H-material,
H-material (Drawn)
The pipes in the system that uses the refrigerant currently on the market are made with O-material (Annealed), even if the
pipe diameter is less than ø19.05 (3/4"). For a system that uses R410A, use pipes that are made with 1/2H-material (Drawn)
unless the pipe diameter is at least ø19.05 (3/4") and the radial thickness is at least 1.2t.
The figures in the radial thickness column are based on the Japanese standards and provided only as a reference. Use pipes
that meet the local standards.
-9-
4. Thickness and refrigerant type indicated on the piping materials
Ask the pipe manufacturer for the symbols indicated on the piping material for new refrigerant.
5. Flare processing (O-material (Annealed) and OL-material only)
The flare processing dimensions for the pipes that are used in the R410A system are larger than those in the R22 system.
Flare processing dimensions (mm[in])
A dimension (mm)
ø6.35
[1/4"]
9.1
ø9.52
[3/8"]
13.2
ø12.7
[1/2"]
16.6
ø15.88
[5/8"]
19.7
ø19.05
[3/4"]
24.0
Dimension A
Pipe size (mm[in])
If a clutch-type flare tool is used to flare the pipes in the system using R410A, the length of the pipes must be between 1.0
and 1.5 mm. For margin adjustment, a copper pipe gauge is necessary.
6. Flare nut
The flare nut type has been changed to increase the strength. The size of some of the flare nuts have also been changed.
Flare nut dimensions (mm[in])
Pipe size (mm[in])
B dimension (mm)
ø6.35
[1/4"]
17.0
ø9.52
[3/8"]
22.0
ø12.7
[1/2" ]
26.0
ø15.88
[5/8" ]
29.0
ø19.05
[3/4"]
36.0
Dimension B
The figures in the radial thickness column are based on the Japanese standards and provided only as a reference. Use pipes
that meet the local standards.
- 10 -
[4] Storage of Piping
1. Storage location
Store the pipes to be used indoors. (Warehouse at site or owner's warehouse)
If they are left outdoors, dust, dirt, or moisture may infiltrate and contaminate the pipe.
2. Sealing the pipe ends
Both ends of the pipes should be sealed until just before brazing.
Keep elbow pipes and T-joints in plastic bags.
The new refrigerator oil is 10 times as hygroscopic as the conventional refrigerating machine oil (such as Suniso) and, if not
handled with care, could easily introduce moisture into the system. Keep moisture out of the pipes, for it will cause the oil to
deteriorate and cause a compressor failure.
[5] Pipe Processing
Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flanges.
Use a minimum amount of oil.
Use only ester oil, ether oil, and alkylbenzene.
- 11 -
[6] Brazing
No changes have been made in the brazing procedures. Perform brazing with special care to keep foreign objects (such as oxide
scale, water, and dust) out of the refrigerant system.
Example: Inside the brazed connection
Use of oxidized solder for brazing
Use of non-oxidized solder for brazing
1. Items to be strictly observed
Do not conduct refrigerant piping work outdoors if raining.
Use non-oxidized solder.
Use a brazing material (BCuP-3) that requires no flux when brazing between copper pipes or between a copper pipe and
copper coupling.
If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends.
2. Reasons
The new refrigerating machine oil is 10 times as hygroscopic as the conventional oil and is more likely to cause unit failure if
water infiltrates into the system.
Flux generally contains chloride. Residual flux in the refrigerant circuit will cause sludge to form.
3. Notes
Do not use commercially available antioxidants because they may cause the pipes to corrode or refrigerating machine oil to
deteriorate.
- 12 -
[7] Air T ightness T est
No changes have been made in the detection method. Note that a refrigerant leak detector for R22 will not detect an R410A leak.
Halide torch
R22 leakage detector
1. Items to be strictly observed
Pressurize the equipment with nitrogen up to the design pressure (4.15MPa[601psi]), and then judge the equipment's air tightness, taking temperature variations into account.
When using refrigerant instead of a leak detector to find the location of a leak, use R410A.
Refrigerant R410A must be charged in its liquid state (vs. gaseous state).
2. Reasons
Oxygen, if used for an air tightness test, poses a risk of explosion. (Only use nitrogen to check air tightness.)
Refrigerant R410A must be charged in its liquid state. If gaseous refrigerant in the cylinder is drawn out first, the composition
of the remaining refrigerant in the cylinder will change and become unsuitable for use.
3. Notes
Procure a leak detector that is specifically designed to detect an HFC leak. A leak detector for R22 will not detect an
HFC(R410A, R407C) leak.
- 13 -
[8] Vacuum Drying (Evacuation)
(Photo1) 15010H
(Photo2) 14010
Recommended vacuum gauge:
ROBINAIR 14010 Thermistor Vacuum Gauge
1. Vacuum pump with a reverse-flow check valve (Photo1)
To prevent the vacuum pump oil from flowing into the refrigerant circuit during power OFF or power failure, use a vacuum
pump with a reverse-flow check valve.
A reverse-flow check valve may also be added to the vacuum pump currently in use.
2. Standard of vacuum degree (Photo 2)
Use a vacuum pump that attains 0.5Torr(6 5Pa) or lower degree of vacuum after 5 minutes of operation, and connect it directly
to the vacuum gauge. Use a pump well-maintained with an appropriate lubricant. A poorly maintained vacuum pump may not
be able to attain the desired degree of vacuum.
3. Required precision of vacuum gauge
Use a vacuum gauge that registers a vacuum degree of 5Torr(650Pa) and measures at intervals of 1Torr(130Pa). (A recommended vacuum gauge is shown in Photo2.)
Do not use a commonly used gauge manifold because it cannot register a vacuum degree of 5Torr(650Pa).
4. Evacuation time
After the degree of vacuum has reached 5Torr(650Pa), evacuate for an additional 1 hour. (A thorough vacuum drying removes moisture in the pipes.)
Verify that the vacuum degree has not risen by more than 1Torr(130Pa) 1hour after evacuation. A rise by less than
1Torr(130Pa) is acceptable.
If the vacuum is lost by more than 1Torr(130Pa), conduct evacuation, following the instructions in section 6. Special vacuum
drying.
5. Procedures for stopping vacuum pump
To prevent the reverse flow of vacuum pump oil, open the relief valve on the vacuum pump side, or draw in air by loosening
the charge hose, and then stop the operation.
The same procedures should be followed when stopping a vacuum pump with a reverse-flow check valve.
6. Special vacuum drying
When 5Torr(650Pa) or lower degree of vacuum cannot be attained after 3 hours of evacuation, it is likely that water has penetrated the system or that there is a leak.
If water infiltrates the system, break the vacuum with nitrogen. Pressurize the system with nitrogen gas to
0.5kgf/cm2G(0.05MPa) and evacuate again. Repeat this cycle of pressurizing and evacuation either until the degree of vacuum below 5Torr(650Pa) is attained or until the pressure stops rising.
Only use nitrogen gas for vacuum breaking. (The use of oxygen may result in an explosion.)
- 14 -
[9] Refrigerant Charging
Cylinder without a siphon
Cylinder with a siphon
Cylinder
Cylinder
Cylinder color R410A is pink.
Refrigerant charging in the liquid state
Valve
Valve
liquid
liquid
1. Reasons
R410A is a pseudo-azeotropic HFC blend (boiling point R32=-52 C[-62 F], R125=-49 C [-52 F]) and can almost be handled
the same way as a single refrigerant, such as R22. To be safe, however, draw out the refrigerant from the cylinder in the liquid
phase. If the refrigerant in the gaseous phase is drawn out, the composition of the remaining refrigerant will change and become unsuitable for use.
2. Notes
When using a cylinder with a siphon, refrigerant is charged in the liquid state without the need for turning it upside down. Check
the type of the cylinder on the label before use.
[10] Remedies to be taken in case of a Refrigerant Leak
If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced. (Charge refrigerant in the
liquid state.)
- 15 -
[11] Characteristics of the Conventional and the New Refrigerants
1. Chemical property
As with R22, refrigerants R410A and R134a are low in toxicity and chemically stable nonflammable refrigerants.
However, because the specific gravity of vapor refrigerant is greater than that of air, leaked refrigerant in a closed room will
accumulate at the bottom of the room and may cause hypoxia.
If exposed to an open flame, refrigerant will generate poisonous gases. Do not perform installation or service work in a confined area.
New Refrigerant (HFC type)
R410A
R134a
R32/R125
R134a
Composition (wt%)
(50/50)
(100)
Type of Refrigerant
Pseudo-azeotropic
Refrigerant
SingleRefrigerant
Not included
Not contained
A1/A1
A1/A1
72.6
102.0
Boiling Point ( C/ F)
-51.4/-60.5
-26.1/-15.0
Steam Pressure
(25 C,MP a/77 F,psi) (gauge)
1.557/226
0.67/97
64.0
32.3
Nonflammable
Non-flammable
0
0
1730
1300
Refrigerant charging in
the liquid state
Liquid charging
Available
Possible
Chloride
Safety Class
Molecular Weight
Saturated Steam Density
(25 C,kg/m3/77 F, psi)
Flammability
*1
Ozone Depletion Coeff icient (ODP)
*2
Global Warming Coefficient (GWP)
Refrigerant Charging Method
Replenishment of Refrigerant after a Refrigerant
Leak
*1 When CFC11 is used as a reference
*2 When CO2 is used as a reference
2. Refrigerant composition
R410A is a pseudo-azeotropic HFC blend and can almost be handled the same way as a single refrigerant, such as R22. To
be safe, however, draw out the refrigerant from the cylinder in the liquid phase. If the refrigerant in the gaseous phase is drawn
out, the composition of the remaining refrigerant will change and become unsuitable for use.
If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced.
3. Pressure characteristics
R410A has slightly higher operating pressure compared with R22.
Pressure (gauge)
Temperature ( C/ F )
R410A
R134a
R22
MPa/psi
MPa/psi
MPa/psi
-20/-4
0.30/44
0.13/19
0.14/20
0/32
0.70/102
0.29/42
0.40/58
20/68
1.34/194
0.57/83
0.81/117
40/104
2.31/335
1.02/148
1.44/209
60/140
3.73/541
1.68/244
2.33/338
65/149
4.17/605
1.89/274
2.60/377
- 16 -
[12] Notes on Refrigerating Machine Oil
1. Refrigerating machine oil in the HFC refrigerant system
HFC type refrigerants use a refrigerating machine oil different from that used in the R22 system.
Note that the ester oil used in the system has properties that are different from commercially available ester oil.
Refrigerant
Refrigerating machine oil
R134a
HAB
R410A
Ester oil
2. Effects of contaminants*1
Refrigerating machine oil used in the HFC system must be handled with special care to keep contaminants out.
The table below shows the effect of contaminants in the refrigerating machine oil on the refrigeration cycle.
3. The effects of contaminants in the refrigerating machine oil on the refrigeration cycle.
Cause
Symptoms
Water infiltration
Frozen expansion valve
and capillary tubes
Hydrolysis
Air infiltration
Effects on the refrigerant cycle
Sludge formation and adhesion
Acid generation
Oxidization
Oil degradation
Clogged expansion valve and capillary tubes
Poor cooling performance
Compressor overheat
Motor insulation failure
Burnt motor
Coppering of the orbiting scroll
Lock
Burn-in on the orbiting scroll
Oxidization
Adhesion to expansion valve and capillary
tubes
Clogged expansion valve, capillary tubes, and
drier
Poor cooling performance
Compressor overheat
Infiltration of contaminants into the compressor
Burn-in on the orbiting scroll
Sludge formation and adhesion
Clogged expansion valve and capillary tubes
Poor cooling performance
Compressor overheat
Oil degradation
Burn-in on the orbiting scroll
Dust, dirt
Infiltration of
contaminants
Mineral oil
etc.
*1. Contaminants is defined as moisture, air, processing oil, dust/dirt, wrong types of refrigerant, and refrigerating machine oil.
- 17 -
™ Restrictions
[1] T ypes and Maximum allowable Length of Cables
1. Wiring work
(1) Notes
1) Have all electrical work performed by an authorized electrician according to the local regulations and instructions in this manual.
2) Install external transmission cables at least 5cm [1-31/32"] away from the power supply cable to avoid noise interference.
(Donot put the control cable and power supply cable in the same conduit tube.)
3) Provide grounding for the outdoor unit as required.
4) Run the cable from the electric box of the indoor or outdoor unit in such way that the box is accessible for servicing.
5) Do not connect power supply wiring to the terminal block for transmission line. Doing so will damage the electronic components on the terminal block.
6) Use 2-core shielded cables as transmission cables.
Use a separate 2-core control cable for each refrigerant system. Do not use a single multiple-core cable to connect indoor
units that belong to different refrigerant systems. The use of a multiple-core cable may result in signal transmission errors and
malfunctions.
Unit
Unit
Unit
Unit
2-core cable
Multiplecore cable
Remote
controller
Remote
controller
BC controller
BC controller
2-core cable
7) When extending the transmission cable, be sure to extend the shield wire.
(2) Control wiring
Types and maximum allowable length of cables
Control lines are categorized into 2 types: transmission line and remote controller line.
Use the appropriate type of cables and observe the maximum allowable length specified for a given system. If a given system
has a long transmission line or if a noise source is located near the unit, place the unit away from the noise source to reduce
noise interference.
PWFY-P100VM-E-BU
Transmission cables
MA Remote controller cables
External input
External output
Cable diameter
Shielding wire (2-core)
CVVS, CPEVS or MVVS
More than 1.25 mm2
Sheathed 2-core cable (shielded)
CVVS
0.3 ~ 1.25 mm2 (0.75 ~ 1.25 mm2)*1
Sheathed multi-core cable (shielded)
CVVS or MVVS
0.3 ~ 0.5 mm2
Sheathed multi-core cable (unshielded)
CVV or MVV
0.3 ~ 1.25 mm2
Remarks
-
Max.length: 200 m
Max.length: 100 m
Rated voltage: L1-N: 220 ~ 240 V
Rated load: 0.6 A
Type of cable
PWFY-P100/200VM-E/E1/E2-AU
Transmission cables
MA Remote controller cables
External input
External output
Cable diameter
Shielding wire (2-core)
CVVS, CPEVS or MVVS
More than 1.25 mm2
Sheathed 2-core cable
CVV (unshielded)
0.3 ~ 1.25 mm2 (0.75 ~ 1.25 mm2)*1
Sheathed multi-core cable
CVV or MVV (unshielded)
0.3 ~ 0.5 mm2
Sheathed multi-core cable (unshielded)
CVV or MVV
0.3 ~ 1.25 mm2
Remarks
-
Max.length: 200 m
Max.length: 100 m
Rated voltage: L1-N: 220 ~ 240 V
Rated load: 0.6 A
Type of cable
*1 Connected with simple remote controller. CVVS, MVVS: PVC insulated PVC jacketed shielded control cable
CVV, MVV : PVC insulated PVC sheathed control cable
CPEVS
: PE insulated PVC jacketed shielded communication cable
- 18 -
[2] Types of Switch Setting and Address Setting
1. Switch setting
Type and method of switch setting
Switch setting vary depending on the system configuration. Make sure to read “[3] Examples of system connection”
before conducting electrical work. Turn off the power before setting the switch. Operating the switch while the unit is
being powered will not change the setting, and the unit will not properly function.
2. Address setting
(1) Address setting varies depending on the system configuration. See “[3] Examples of system connection”
section for details.
Unit or controller
Unit
Main/sub units
MA remote controller
Setting method
Assign the smallest address to the indoor unit to
become the main unit within the same group, and
then use sequential numbers to assign an address
to all the indoor units in the group.
If applicable, set the sub BC controllers in an R2
system in the following order:
(1) Indoor unit to be connected to the main BC controller
(2) Indoor unit to be connected to No.1 sub BC controller
(3) Indoor unit to be connected to No.2 sub BC controller
Set the address so that (1) < (2) < (3)
0, 01~50
(Note 1)
No address setting required. (When operating with 2 remote controllers,
the main/sub selector switch must be set.
Outdoor unit
Auxiliary
units
Address
setting range
BC controller (Main)
0, 51~100
(Note 1, 2, 3)
Use the address that equals the sum of the smallest indoor
unit address in the same refrigerant system and 50.
52~100
(Note 2, 3)
Use the address that equals the sum of the address of the
heat source unit in the same refrigerant system and 1.
Factory
setting
00
Main
00
Use the address that equals the sum of the smallest
address of the indoor unit out of all the indoor units
that are connected to the BC controller and 50.
When a sub BC controller is connected, the automatic
start up function will not be available.
BC controller (Sub)
Notes:
1. Address setting is not required for a single refrigerant system (with a few exception).
2. When setting the unit and outdoor auxiliary unit address to “100,” make it “50.”
3. When an address in a system overlapped with the heat source unit or BC controller (Main) address of other refrigerant system,
choose an another address within the set range that is not in use (with a few exceptions).
4. BC controller is found only in the R2 systems.
(2) Unit port switch setting (R2 series (Factory Setting: “0”))
Make the settings for the port switch that corresponds to the connected BC (Main/Sub) controller.
When more than two ports are used, make the setting on the port with a smaller port number.
(3) Various start-stop controls (Unit settings)
Each unit (or group of units) can be controlled individually by setting SW 1-3 and 1-4.
Function
Operation of the indoor unit when the operation is resumed after the unit was stopped
Power ON/OFF by the
plug (Note 1)
Unit will go into operation regardless of its operation status before power off
(power failure). (In approx. 5 minutes)
Automatic restoration
after power failure
Unit will go into operation if it was in operation when the power was turned off
(or cut off due to power failure). (In approx. 5 minutes)
Unit will remain stopped regardless of its operation status before power off
(power failure).
Setting (SW1) (Note 2)
3
4
OFF
ON
ON
ON
OFF
OFF
(Note 1) Do not cut off power to the outdoor unit.
Cutting off the power supply to the outdoor unit will cut off the power supply to the crankcase heater and may cause the
compressor to malfunction when the unit is put back into operation.
(Note 2) Requires that the dipswitch settings for all the units in the group be made.
- 19 -
[3] Examples of system connection
1. Connecting remote controller, indoor and outdoor transmission cabls
•
Connect unit TB5 and outdoor unit TB3. (Non-polarized 2-wire (shield))
The “S” on unit TB5 is a shielding wire connection. For specifications about the connecting cables, refer to
the outdoor unit installation manual.
•
Install a remote controller following the manual supplied with the remote controller.
2. System using MA remote controller
(1) In the case of single refrigerant system (Automatic address set-up)
•
Connect the “1” and “2” on unit TB15 to a MA remote controller. (Non-polarized 2-wire)
MA Remote controller
(A)
(B)
(C)
TB3
TB02
TB5
TB15
M1M2 S
M1M2 S
1 2 S
(E)
M1M2
(A) Outdoor unit
(B) BC controller
(C) PWFY-P100VM-E-BU
(D) PWFY-P100, 200VM-E/E1/E2-AU
(E) MA remote controller
earth cable
(shielded)
(D)
(shielding wire)
TB5
M1M2 S
•
(E)
TB15
1
2
DC 10 to 13 V between 1 and 2 (MA remote controller)
PWFY- P100VM-E-BU
PWFY- P100, 200VM-E/E1/E2-AU
(B)
(B)
S
2
(D)
2
(D)
(A)
1
S
1
S
(A)
M2
M2
(E)
M1
DC10~13V
(E)
M1
DC10~13V
(C)
L
•
N
A B
1 2
(A) Non-polarized
(B) TB15 (MA remote controller cables)
(C) MA remote Controller
(D) TB5 (Transmission cables)
(E) TB2 (Power supply wiring)
(C)
L
N
A
1
B
2
The MA remote controller cannot be used at the same time or interchangeably.
Note:
Ensure that the wiring is not pinched when fitting the terminal box cover. Pinching the wiring may cut it.
•
•
•
•
Caution:
Use wire with supplemental insulation.
Input to TB142A, TB142B, and TB142C should not carry voltage.
Cables from equipment connected to external input/output should have supplemental insulation.
Use a single multiple-core cable for external input/output to allow for connection to the PG screw.
Caution:
Wire the power supply so that no tension is imparted. Otherwise disconnection, heating or fire result.
- 20 -
[4] Restrictions on piping length
The same piping length restrictions apply as the ones that apply to the conventional indoor units.
Refer to the Service Manual that came with the outdoor unit for restrictions on piping length.
Design the water piping system so that the total amount of water in the entire system will be as
shown in the table below.
- 21 -
£ Components of the Unit
[1] Appearance of the Components and Refrigerant Circuit
< PWFY-P100VM-E-BU >
Pressure sensor (63LS)
Pressure switch (63H1)
Heat exchanger assy
Thermistor (TH8)
Pressure sensor (63HS)
Heat exchanger assy
Linear expansion valve
Linear expansion valve coil
(LEV2W)
Thermistor (TH11)
Thermistor (TH13)
Check joint
Linear expansion valve
(LEV1W)
Compressor
Thermistor (TH6)
Thermistor (TH22)
< PWFY-P100, 200VM-E/E1-AU >
Heat exchanger assy
Thermistor (TH8,TH23)
Linear expansion valve
(LEV1Wa,b)
Solenoid valve
Solenoid valve coil (SV)
Check valve
Thermistor (TH6,TH22)
- 22 -
< PWFY-P100, 200VM-E2-AU >
Thermistor (TH23)
Heat exchanger assy
Thermistor (TH8)
Check valve (CV1)
Linear expansion valve
(LEV1Wa,LEV1Wb)
Solenoid valve
Solenoid valve coil (SVG)
Solenoid valve
Solenoid valve coil (SV1)
Check valve (CV2)
Solenoid valve
Solenoid valve coil (SVL)
Thermistor (TH22)
Thermistor (TH6)
- 23 -
[2] Control Box
< PWFY-P100VM-E-BU >
Thermistor (THHS)
INV board
Fan
Reactor
Noise filter
Fuse
Terminal block
(TB2)
Control board
Terminal block
(TB5)
Terminal block (TB15)
< PWFY-P100, 200VM-E/E1-AU >
Transformer
Fuse
Control board
Terminal block assy (TB5)
Terminal block assy (TB15)
DSA board
Terminal block assy
(TB2)
- 24 -
< PWFY-P100, 200VM-E2-AU >
Transformer
Fuse
Control board
Terminal block assy (TB5)
Terminal block assy (TB15)
Fuse
DSA board
Terminal block assy
(TB2)
- 25 -
- 26 -
LED4
CN3A
LED1
CN2M
CN422
CN421
CN401
CN402
CN403
CN404
CN405
CN63LS
CN63HS
CN3T
TB141B
SWP1 SWP2 SWP3 F631
CN631
(IN1)
(IN2)
(IN3)
(IN4)
(IN5)
(IN6)
(IN7)
(IN8)
TB142C
SW5 SW1 SW3
(COM+)
SW2 SW4 TB142A TB142A TB142B TB142B
TB142C TB142C TB142C TB142C
CN661
(63H1)
TB141A, TB142A, TB142B, TB142C : Refer to 5 Electrical Wiring Diagram
TB141A TB141A TB141A TB141A
(OUT1) (OUT2) (OUT3) (OUT4)
LED3
SWU1
SWU2
SWU3
F01
CNLVC
CNLVB
CNLVA
CN2
CN4
CN52C
CN506A,B
CN501
CN507
CNAC
[3] Circuit Board
1. Main board
< PWFY-P100VM-E-BU, PWFY-P100, 200VM-E-AU, PWFY-P100, 200VM-E1-AU, PWFY-P100, 200VM-E2-AU >
2. Power board
< PWFY-P100VM-E-BU >
CN5 CN4
CN3
CN2
U
V
LD2
LD9
LD1
W
R
S
- 27 -
3. Noise filter
< PWFY-P100VM-E-BU >
E2
E1
CNAC1
NI
LI
E3
CNAC2
CN5
NO
CN52C
LO
4. DSA
< PWFY-P100,200VM-E-AU, PWFY-P100,200VM-E1-AU, PWFY-P100,200VM-E2-AU >
CN1
- 28 -
¢ Remote Controller
[1] Functions and Specifications of MA Remote Controller
MA remote controller is connected to each unit.
Function/specification
MA remote controller
Remote controller address setting
Not required
Indoor/outdoor unit address setting
Not required (required only by a system with one outdoor unit)
Wiring method
Non-polar 2 wires
✻ Daisy-chain the units with non-polar 2 wires when running
a group operation.
Installation location of remote controller
Connectable to any unit in the group
Making group changes
MA remote controller wires between units require rewiring.
- 29 -
[2] Interlocking Setting via the MA Remote Controller
1. Remote controller function selection via the MA remote controller
Function selection of remote controller
The setting of the following remote controller functions can be changed using the remote controller function selection mode. Change the setting when needed.
Item 2
Item 1
Item 3 (Setting content)
1. Change Language
(“CHANGE
LANGUAGE”)
Language setting to display
• Display in multiple languages is possible
2. Function limit
(“FUNCTION
SELECTION”)
(1) Operation function limit setting (operation lock) (“LOCKING
FUNCTION”)
• Setting the range of operation limit (operation lock)
(2) Operation mode skip setting (“SELECT MODE”)
• Setting the use or non-use of each operation mode
(3) Temperature range limit setting (“LIMIT TEMP FUNCTION”)
• Setting the temperature adjustable range (maximum, minimum)
(1) Remote controller main/sub setting (“CONTROLLER MAIN/
SUB”)
• Selecting main or sub remote controller
* When two remote controllers are connected to one group, one
controller must be set to sub.
(2) Use of clock setting (“CLOCK”)
• Setting the use or non-use of clock function
(3) Timer function setting (“WEEKLY TIMER”)
• Setting the timer type
(4) Contact number setting for error situation (“CALL.”)
• Contact number display in case of error
• Setting the telephone number
(5) Temp off set setting (“TEMP OFF SET FUNCTION”)
• Setting the use or non-use of setback amount setting
(1) Temperature display ˚C/˚F setting (“TEMP MODE ˚C/˚F”)
• Setting the temperature unit (˚C or ˚F) to display
(2) Water temperature display setting (“WATER TEMP DISP
SELECT”)
• Setting the use or non-use of the display of water temperature
3. Mode selection
(“MODE SELECTION”)
4. Display change
(“DISP MODE
SETTING”)
Function selection flowchart
[1] Stop the unit to start remote controller function selection mode. [2] Select from item 1.
3)
[5] Setting completed.
[6] Change the display to the normal one. (End)
[3] Select from item 2.
[4] Make the setting. (Details are specified in item
Normal display (Display when
the unit is not running)
(Hold down the E button and press the D button for two
seconds.)
* The display cannot be changed during the test run and
the self diagnosis.
Item 1
Press the G button.
Change Language
(“CHANGE LANGUAGE”)
(Hold down the E button and press
the D button for two seconds.)
* The remote controller records the
setting that is made in this way.
Remote Controller Function
Selection Mode
See [3]–1
Item 3
(Setting content)
Item 2
Press the
E button.
Function limit
(“FUNCTION
SELECTION”) Press the
Operation function limit setting (“LOCKING FUNCTION”)
Press the G button.
Operation mode skip setting (“SELECT MODE”)
G button.
Temperature range limit setting (“LIMIT TEMP FUNCTION”)
Press the Press the
E button. E button.
Press the
Mode selection G button.
Remote controller main/sub setting (“CONTROLLER MAIN/SUB”)
Press the G button.
Use of clock setting (“CLOCK”)
(“MODE
SELECTION”)
Press the
E button.
NOTE
Timer operation stops when the display for
remote controller function selection is
changed to the normal one.
Press the
D button.
Dot display
The language that is selected in
CHANGE LANGUAGE mode appears on this display. English is
set in this manual.
See [3]–2. (1)
See [3]–2. (2)
See [3]–2. (3)
Press the
D button.
See [3]–3. (1)
F
I
TEMP.
Timer function setting (“WEEKLY TIMER”)
See [3]–3. (3)
Contact number setting for error situation (“CALL.”)
See [3]–3. (4)
Temp off set setting (“TEMP OFF SET FUNCTION”)
See [3]–3. (5)
A
E
G
MENU
BACK
PAR-W21MAA
MONITOR/SET
(“DISP MODE
SETTING”)
ON/OFF
DAY
CLOCK
INITIAL SETTING
CHECK
CIR.WATER
TEST
CLEAR
B
C
Press the
Display change G button.
ON/OFF
See [3]–3. (2)
Temperature display ˚C/˚F setting (“TEMP MODE ˚C/˚F”)
Press the G button.
Water temperature display setting (“WATER TEMP DISP SELECT”)
- 30 -
Press the
D button.
See [3]–4. (1)
See [3]–4. (2)
D
H
[3]–3. Mode selection setting
Detailed setting
(1) Remote controller main/sub setting
• To switch the setting, press the [ ON/OFF] button D.
1 Main : The controller will be the main controller.
2 Sub : The controller will be the sub controller.
[3]–1. CHANGE LANGUAGE setting
The language that appears on the dot display can be selected.
• Press the [ MENU] button to change the language.
1 English (GB), 2 German (D), 3 Spanish (E), 4 Russian (RU),
5 Italian (I), 6 French (F), 7 Swedish
(2) Use of clock setting
• To switch the setting, press the [ ON/OFF] button D.
1 ON : The clock function can be used.
2 OFF : The clock function cannot be used.
[3]–2. Function limit
(1) Operation function limit setting (operation lock)
• To switch the setting, press the [ ON/OFF] button.
1 no1 : Operation lock setting is made on all buttons other than the
[ ON/OFF] button.
2 no2 : Operation lock setting is made on all buttons.
3 OFF (Initial setting value) : Operation lock setting is not made.
* To make the operation lock setting valid on the normal screen, it is necessary to
press buttons (Press and hold down the [CIR.WATER] and [ ON/OFF] buttons
at the same time for two seconds.) on the normal screen after the above setting
is made.
(2) Operation mode skip setting
After setting is changed, the operation mode can not be changed within the changed
range.
• To switch the following settings, press the [ ON/OFF] button.
1 Heating mode
: Sets the use or non-use of the Heating mode.
2 Heating ECO mode
: Sets the use or non-use of the Heating ECO
mode.
3 Hot Water mode
: Sets the use or non-use of the Hot Water mode.
4 Anti-freeze mode
: Sets the use or non-use of the Anti-freeze
mode.
5 Cooling mode
: Sets the use or non-use of the Cooling mode.
6 OFF (Initial setting value) : Operation mode skip is not executed.
* When the setting, other than OFF, is made, the skip settings of the Heating,
Heating ECO, Hot Water, Anti-freeze, and Cooling modes are executed at the
same time.
* A mode that is not available on the unit to connect cannot be used even if the
setting is “AVAILABLE.”
(3) Temperature range limit setting
After this setting is made, the temperature can be changed within the set range.
• To switch the setting, press the [ ON/OFF] button.
1 LIMIT TEMP HEATING MODE:
The temperature range can be changed on heating mode.
2 LIMIT TEMP HOT WATER MODE:
The temperature range can be changed on heating/hot water mode.
3 LIMIT TEMP ANTI-FREEZE MODE:
The temperature range can be changed on anti-freeze mode.
4 LIMIT TEMP COOLING MODE:
The temperature range can be changed on cooling mode.
5 OFF (Initial setting) : The temperature range limit is not active.
* When the setting, other than OFF, is made, the temperature range limit setting
on hot water, anti-freeze and cooling mode is made at the same time. However,
the range cannot be limited when the set temperature range has not changed.
• To increase or decrease the temperature, press the [
TEMP.
or
]
button.
• Settable range
Hot Water mode
: Lower limit: 30 ~70 ˚C (87 ~158 ˚F)
Upper limit: 70 ~30 ˚C (158 ~ 87 ˚F)
Heating mode
: Lower limit: 30 ~45 ˚C (87 ~113 ˚F)
Upper limit: 45 ~30 ˚C (113 ~ 87 ˚F)
Cooling mode
: Lower limit: 10 ~30 ˚C (50 ~ 87 ˚F)
Upper limit: 30 ~10 ˚C (87 ~ 50 ˚F)
* The settable range varies depending on the unit to connect.
(3) Timer function setting
• To switch the setting, press the [ ON/OFF] button D (Choose one of the
followings.).
1 WEEKLY TIMER (Initial setting value): The weekly timer can be used.
2 AUTO OFF TIMER : The auto off timer can be used.
3 SIMPLE TIMER
: The simple timer can be used.
4 TIMER MODE OFF : The timer mode cannot be used.
* When the use of clock setting is OFF, the “WEEKLY TIMER” cannot be used.
(4) Contact number setting for error situation
• To switch the setting, press the [ ON/OFF] button D.
1 CALL OFF
: The set contact numbers are not displayed in case of error.
2 CALL **** *** **** : The set contact numbers are displayed in case of error.
CALL_
: The contact number can be set when the display is as
shown on the left.
• Setting the contact numbers
To set the contact numbers, follow the following procedures.
Move the flashing cursor to set numbers. Press the [
TEMP.
or
] button F to move the cursor to the right (left). Press the [ CLOCK
or
] button C to set the numbers.
(5) Temp off set setting
• To switch the following settings, press the [
ON/OFF] button D.
1 ON : The setback amount setting is displayed under the water temperature
initial setting mode.
2 OFF : The setback amount setting is not displayed under the water temperature initial setting mode.
[3]–4. Display change setting
(1) Temperature display ˚C/˚F setting
• To switch the setting, press the [
ON/OFF] button D.
1 ˚C: The temperature unit ˚C is used.
2 ˚F: The temperature unit ˚F is used.
(2) Water temperature display setting
• To switch the setting, press the [ ON/OFF] button D.
1 ON : The water temperature is displayed.
2 OFF : The water temperature is not displayed.
- 31 -
63LS
TH11 t∞
TH8 t∞
TH6 t∞
TH13 t∞
- 32 -
CN63LS
red
CN403
red
MS V white
3~
black
U red
RS4
12
CN5
red
RS3
X512
X513
X514
12
CN3
t∞
THHS
red
U
CT1
LED1
X516
X517
blue
red
SW5
ON
OFF 1 5
RS1 RS2
CB1
+
CB2
+
CB3
+
ON
OFF 1
ON
OFF 1
SW2
SW1
gray
SW4
IN1
red
red
2
L4
1 3 CNAC1
E3
3
CNAC2
1 red
RS
red
CY4
N
blue
U
CX1
Z1
L2
NI
L1
CY1
R1
CY2
CY3
CX2
CX3
CX4
CY6
CX5
blue
E2
gray
DSA
E1
gray
U
TB2
yellow/green
Z2
2
CN5
red
1
2
CN52C
black
1
6
5
CNLVB 4
3
2
1
CT1
NO
2
1
7
6
5
6
5
CNLVA 4
3
blue
2
1
CN2
CN4 2 1
CN52C
blue 2 1
CN506B 2 1
X506 CN506A 2 1
F01
AC250V CNAC
red 1 2
6.3A
Power Supply
~220/230/240V
50Hz/60Hz
L
red
LI
L3
CX6
CX7
52C
CY5
24V
LO
U
ZNR01
Noise
Filter
S(SHIELD) TB15
To MA remote
controller
1
gray
gray
COM+ IN6
COM+ IN5 IN7
IN8
*7
TB142C
SWU3
SWU1
SWU2
SWP3
SWP2
SWP1
orange black
blue
N
CN631
3 pink
Power
Supply circuit
F631
DC700V
4A
P
1
Unit address setting(SWU1,SWU2)
Connection No.(SWU3)
*6
TB142B
IN3 IN4
10
10
blue
ACL
IN2
*5
TB142A
ON
10 OFF 1
ON
10 OFF 1
SW3
S(SHIELD) TB5
INV control
circuit
To outdoor unit/
BC controller
M1 M2
yellow purple
S
R
PFC
black
W
CT2
CIS
Control Board
LED1 Display setting(SW2)
Function setting(SW1,SW3,SW4)
INV Board
CYP
TB141B
CPS
+
OUT5
OUT7
OUT6
X515
1 3
CN661
yellow
P
LED3:Lit when powered
LED4:Remote controller
when powered
white
V
12
567
CN2
OUT1
OUT3
OUT2
OUT4
X511
CYN
IPM
12
CN4
TB141A
*4
CN3A
3 1 blue
CN2M
21 blue
CN422
3 2 1 blue
CN421
3 2 1 black
21 CN401
CN402
21 green
21
CN404
21 black
CN405
21 yellow
321
3 2 1 CN63HS
W
Moter
(Compressor)
black
CN422
3 2 1 blue
4-20mA
CN421
3 2 1 black
4-20mA
1
2
3
TH22 t∞
1
2
3
63HS
63H1
Fan motor
(DC)
Fan motor
(DC)
gray
3 2 1 CN-E1
M LEV1W
M LEV2W
M
M
Function
Operation ON/OFF
Defrost
Compressor
Error signal
Function
Common
Hot water
Heating ECO
Anti-freeze
Symbol Explanation
Pressure
High pressure switch
63H1
switch
(High pressure protection for the booster unit)
63HS
Discharge pressure
Pressure
sensor
63LS
Low pressure
52C
Magnetic relay(main circuit)
ACL
AC reactor
CT1,CT2 Current sensor(AC)
LEV1W Linear
BC controller/outdoor unit
expansion
valve
LEV2W
Booster unit
Power supply
TB2
Terminal
block
TB5
Outdoor unit/BC controller
TB15
MA remote controller
TH11
Thermistor
Compressor discharge temp
TH13
Evaporator outlet temp
TH22
liquid pipe temp
TH6
water inlet temp
TH8
water outlet temp
IGBT temp
THHS
<Symbol explanation>
Symbol
COM+
IN5
IN6
IN7
*7 TB142C(input)
Symbol Function
IN3
Connection demand
IN4
Operation ON/OFF
*6 TB142B(input)
Symbol Function
IN1
Pump interlock
*5 TB142A(input)
Symbol
OUT1
OUT2
OUT3
OUT4
<HIGH VOLTAGE WARNING>
Control box houses high-voltage parts.
Before inspecting the inside of the control box, turn off the power,
keep the unit off for at least 10 minutes,and confirm that the voltage
CN631 on Control Board has dropped to DC20V or less.
<CAUTION FOR INSTALLATION>
Prior to installation,read the Installation Manual carefully.
*1.Single-dotted lines indicate wiring not supplied with the unit.
*2.Dot-dash lines indicate the control box boundaries.
*3.Faston terminals have a locking function.
Make sure the terminals are securely locked in place after insertion.
Press the tab on the terminals to removed them.
*4 TB141A(output)
∞ Electrical Wiring Diagram
[1] PWFY-P100VM-E-BU
t∞
TH8
CN422
3 2 1 blue
4-20mA
CN421
3 2 1 black
4-20mA
t∞
TH6
TH23 t∞
TH22 t∞
CN403
red
- 33 -
TB141A
*4
CN3A
3 1 blue
CN2M
21 blue
CN422
3 2 1 blue
CN421
3 2 1 black
CN402
21 green
21
CN404
21 black
CN405
21 yellow
X512
X513
X514
OUT1
OUT3
OUT2
OUT4
X511
LED1
X516
X517
OUT5
OUT7
OUT6
X515
M2
SW2
SW1
SW4
SW3
IN1
*6
TB142B
2
*7
TB142C
TB15
COM+ IN6 IN8
COM+ IN5 IN7
To MA remote
controller
1
SWU1
SWU2
SWP3
SWP2
SWP1
SWU3
U
L
red
N
blue
gray
CN1
ZNR1
1
U
3
TB2
yellow/green
red
DSA Board
DSA1
*3
M LEV1Wb
6
5
CNLVC 4
3
2
1
SV1
M LEV1Wa
3
3
6
5
CNLVB 4
3
2
1
X502 CN502
black 1
CN507 1
F01
AC250V CNAC
6.3A
red 1 2
Power Supply
~220/230/240V
50Hz/60Hz
ZNR01
Unit address setting(SWU1,SWU2)
Connection No.(SWU3)
IN3 IN4
10
10
orange black
*5
TB142A
ON
10 OFF 1
ON
10 OFF 1
S(SHIELD) TB5
ON
OFF 1
ON
OFF 1
To outdoor unit/
BC controller/
M1
yellow purple
TB141B
5
SW5
ON
OFF 1
Control Board
LED1 Display setting(SW2)
Function setting(SW1,SW3,SW4)
LED3:Lit when powered
LED4:Remote controller
when powered
3 1
CN3T
red
T01
Function
Operation ON/OFF
Defrost
Error signal
Function
Common
Heating
Heating ECO
Anti-freeze
Cooling
Symbol
SV1
LEV1Wa
LEV1Wb
TB2
TB5
TB15
TH22
TH23
TH6
TH8
Thermistor
Solenoid valve
Linear
expansion valve
Terminal
block
Explanation
For opening/closing the bypass circuit
BC controller/outdoor unit
BC controller/outdoor unit
Power supply
Outdoor unit/BC controller
MA remote controller
liquid pipe temp
gas pipe temp
water inlet temp
water outlet temp
<Symbol explanation>
Symbol
COM+
IN5
IN6
IN7
IN8
*7 TB142C(input)
Symbol Function
IN3
Connection demand
IN4
Operation ON/OFF
*6 TB142B(input)
Symbol Function
IN1
Flow switch
*5 TB142A(input)
Symbol
OUT1
OUT2
OUT4
*4 TB141A(output)
Model name Appliance
P100
*3 do not exist
P200
*3 exist
<CAUTION FOR INSTALLATION>
Prior to installation,read the Installation Manual carefully.
*1.Single-dotted lines indicate wiring not supplied with the unit.
*2.Dot-dash lines indicate the control box boundaries.
*3.Difference of appliance
[2] PWFY-P100, 200VM-E-AU, PWFY-P100, 200VM-E1-AU
TH22 t˚
- 34 -
X514
blue
X513
black
X512
OUT1
X511
OUT3
OUT2
OUT4
TB141A
*4
CN3A
3 1 blue
CN2M
21 blue
CN422
3 2 1 blue
CN422
3 2 1 blue
CN402
21 green
CN403
red
CN421
3 2 1 black
t˚
TH8
21
CN404
21 black
CN405
21 yellow
CN421
3 2 1 black
4-20mA
4-20mA
t˚
TH6
TH23 t˚
LED1
X516
X517
OUT5
OUT7
OUT6
X515
M2
SW2
SW1
SW4
SW3
IN1
10
10
2
3
TB15
To MA remote
controller
1
SVL
1
white
F02
AC250V
3.15A T
red
COM+ IN6 IN8
COM+ IN5 IN7
CNSV1
IN3 IN4
*7
TB142C
SWU3
SWU1
SWU2
SWP3
SWP2
SWP1
2
L
N
red
blue
gray
3
TB2
yellow/green
red
CN1
1
U
ZNR1
DSA Board
DSA1
*3
M LEV1Wb
LEV1Wa
6
5
CNLVC 4
3
2
1
SV1
M
3
6
5
CNLVB 4
3
2
1
CN502
X502 black 1
3
CNAC
red 1 2
CN507 1
Power Supply
~220/230/240V
50Hz/60Hz
CNSV2
red
red
SVG
1
F03
AC250V
3.15A T
U
ZNR01
Unit address setting(SWU1,SWU2)
Connection No.(SWU3)
*6
TB142B
orange black
IN2
*5
TB142A
ON
10 OFF 1
ON
10 OFF 1
S(SHIELD) TB5
ON
OFF 1
ON
OFF 1
To outdoor unit/
BC controller/
M1
5
SW5
ON
OFF 1
yellow purple
TB141B
Control Board
LED1 Display setting(SW2)
Function setting(SW1,SW3,SW4,SW5)
LED3:Lit when powered
LED4:Remote controller
when powered
3 1
CN3T
red
F01
AC250V
6.3A T
T01
Function
Common
Heating
Heating ECO
Anti-freeze
Cooling
LEV1Wa
LEV1Wb
TB2
TB5
TB15
TH22
TH23
TH6
TH8
SVL
SVG
Thermistor
Linear
expansion valve
Terminal
block
Symbol Explanation
Solenoid valve
SV1
For opening/closing the bypass circuit
For opening/closing the gas
refrigerant circuit
For opening/closing the liquid
refrigerant circuit
BC controller/outdoor unit
BC controller/outdoor unit
Power supply
Outdoor unit/BC controller
MA remote controller
liquid pipe temp
gas pipe temp
water inlet temp
water outlet temp
<Symbol explanation>
Symbol
COM+
IN5
IN6
IN7
IN8
*7 TB142C(input)
Symbol Function
IN3
Connection demand
IN4
Operation ON/OFF
*6 TB142B(input)
Symbol Function
Flow switch
IN1
*5 TB142A(input)
Symbol Function
Operation ON/OFF (Voltage contact)
OUT1
OUT2
Defrost
Error signal
OUT4
OUT3 is no function.
*4 TB141A(output)
Model name Appliance
P100
*3 do not exist
P200
*3 exist
<CAUTION FOR INSTALLATION>
·Prior to installation,read the Installation Manual carefully.
*1.Single-dotted lines indicate wiring not supplied with the unit.
*2.Dot-dash lines indicate the control box boundaries.
*3.Difference of appliance
[3] PWFY-P100, 200VM-E2-AU
§ Refrigerant Circuit
[1] Refrigerant Circuit Diagram
< PWFY-P100VM-E-BU >
ST2
CJ
LEV1W TH22
LEV2W
TH6
ST1
Water inlet
Brazed
screw
63HS
63LS
ST3
TH8
TH11
Water outlet
screw
Brazed
PHEX
TH13
PHEX
63H1
COMP
< PWFY-P100VM-E-AU, PWFY-P100VM-E1-AU >
Flow switch *1
Field supply
Gas
piping
TH23
ST2
Brazed
Field supply
TH8
Screw
CV1
Water outlet
Brazed
Brazed
SV
Liquid
LEV1Wa
ST3
TH22
TH6
piping
Brazed
Screw Water inlet
PHEX
*1 A flow switch is not supplied with PWFY-P100VM-E-AU. Please therefore supply it by yourself.
< PWFY-P200VM-E-AU, PWFY-P200VM-E1-AU >
Flow switch *1
Field supply
Gas
piping
Brazed
piping
Screw
CV1
SV
Liquid
TH8
TH23
ST2
Field supply
Brazed
Brazed
LEV1Wa
TH6
TH22
ST4
LEV1Wb
Brazed
PHEX
Screw Water inlet
*1 A flow switch is not supplied with PWFY-P200VM-E-AU. Please therefore supply it by yourself.
- 35 -
Water outlet
< PWFY-P100VM-E2-AU >
Flow switch
Field supply
Field supply
SVG
TH23
ST2
Gas
piping
TH8
Screw
Brazed
Brazed
Brazed
Water outlet
CV1
CV2
SV
SVL
Liquid
piping
LEV1Wa
ST3
TH22
TH6
Screw
Brazed
Water inlet
< PWFY-P200VM-E2-AU >
Flow switch
Field supply
Field supply
SVG
TH23
ST2
Gas
piping
TH8
Screw
Brazed
Brazed
Brazed
Water outlet
CV1
CV2
SV
LEV1Wa
SVL
Liquid
TH22
ST4
LEV1Wb
piping
TH6
Screw Water inlet
Brazed
[2] Pump interlock
PWFY-P100/P200VM-E/E1/E2-AU,
E/E1/E2
*PWFY-P100/P200VM-E/E1 ONLY
Implement the following for a PWFY-P100/P200VM-E/E1-AU unit that meets conditions
(1) and (2) below:
• Pump interlock
• Use of a solenoid valve kit (PAC-SV01PW-E)
packaged
Conditions
(1) When Y, Zubadan, WY, or Replace-Y series models are used for the outdoor units
(2) When PWFY-P100/P200VM-E/E1-AU units are used for heating only and are
placed on the same refrigerant circuit as the indoor units or other
PWFY-P100/P200VM-E/E1/E2-AU units
However, this does not apply in cases where brine is added to the water line or
cases where the unit is run in heating mode only as a refrigerant circuit system
(Fig.C)
- 36 -
A
B
[3] Functions of Principal Parts
1. Unit
Symbols
Part
(functions)
Name
Compres- MC1
sor
High
63HS
-pressure
sensor
Notes
Usage
Adjusts the amount of circulating
refrigerant by adjusting the operating
frequency based on the operating
pressure data
1) Detects high pressure
2) Regulates frequency and provides
high-pressure protection
Specifications
High-pressure shell rotary
compressor
20˚C[68˚F] : 0.583Ω
63HS
123
Connector
Pressure
0~3.60 MPa [522psi]
Vout 0.5~3.5V
0.071V/0.098 MPa [14psi]
Pressure [MPa]
=1.38 x Vout [V]-0.69
Pressure [psi]
=(1.38 x Vout [V] - 0.69) x 145
GND (Black)
Vout (White)
Vcc (DC5V) (Red)
1
2
3
Low
63LS
-pressure
sensor
1) Detects low pressure
2) Provides low-pressure protection
63LS
123
Connector
Pressure
0~1.7 MPa [247psi]
Vout 0.5~3.5V
0.173V/0.098 MPa [14psi]
Pressure [MPa]
=0.566 x Vout [V] - 0.283
Pressure [psi]
=(0.566 x Vout [V] - 0.283) x 145
1
2
3
Pressure
switch
63H1
GND (Black)
Vout (White)
Vcc (DC5V) (Red)
1) Detects high pressure
3.60MPa[522psi] OFF setting
2) Provides high-pressure protection
- 37 -
Check method
Symbols
Part
(functions)
Name
Thermistor TH11
(Discharge)
Notes
Usage
Specifications
1 Detects discharge temperature
2 Protects high pressure
0˚C
10˚C
20˚C
30˚C
40˚C
50˚C
:
:
:
:
:
:
698kΩ
413kΩ
250kΩ
160kΩ
104kΩ
70kΩ
60˚C
70˚C
80˚C
90˚C
100˚C
110˚C
: 48kΩ
: 34kΩ
: 24kΩ
: 17.5kΩ
: 13.0kΩ
: 9.8kΩ
For LEV2 control
Controls compressor suction
superheat based on the difference
with the saturation temperature
yielded from the TH13 and 63LS
values.
TH13
TH6
(Inlet water
temperature)
Detects inlet water temperature
TH22
TH23
Controls LEV1, using TH22, TH23
TH8
(Outlet water
temperature)
Detects water temperature at the
outlet
THHS
Inverter
heat sink
temperature
Heat sink
Controls inverter cooling fan, using
THHS temperature.
R120=7.465kΩ
R25/120=4057
Rt =
7.465exp{4057(
R0=15kΩ
R0/80=3460
Rt =
15exp{3460(
0˚C : 15kΩ
10˚C : 9.7kΩ
20˚C : 6.4kΩ
Check method
Resistance value
check
1
1
)}
273+t 393
Resistance value
check
1
1
)}
273+t 273
25˚C : 5.3kΩ
30˚C : 4.3kΩ
40˚C : 3.1kΩ
R0=17kΩ
R25/120=4170
Rt =
1
17exp{4170(
273+t
1
)}
323
0˚C : 181kΩ 25˚C : 50kΩ
10˚C : 105kΩ 30˚C : 40kΩ
20˚C : 64kΩ 40˚C : 26kΩ
Solenoid
valve
PWFY-P100,200 A refrigerant bypass circuit that
SV1
VM-E/E1/E2-AU functions to prevent water heat
Bypass
exchanger from icing up during the
only
solenoid
defrost cycle.
valve (defrost)
AC220~240V
Open when energized
Closed when not energized
Continuity check
with a tester
Linear
SVG
PWFY-P100, Stops LEV1W(a,b) leaking due to
expansion LEV leak
200VM-E2-AU PHEX freezing prevention.
valve
protect
only
solenoid valve
(gas)
AC230V
Open during energized
Closed during not energized
Continuity check
with a tester
SVL
PWFY-P100, Stops LEV1W(a,b) leaking due to
LEV leak
200VM-E2-AU PHEX freezing prevention.
protect
only
solenoid valve
(liquid)
AC220~240V
Open during energized
Closed during not energized
Continuity check
with a tester
1 Adjusts superheat at the unit heat DC12V
exchanger outlet during cooling
Opening of stepping motor
2 Adjusts subcool at the unit heat
driving valve 0-(1400) pulses
exchanger outlet during hot water
or heating
LEV1
Refer to the section
on continuity test
with a tester
Continuity between
white-red-orange
Continuity between
yellow-brown-blue
White
M
Red
Orange
Switch
LEV2
PWFY-P100
VM-E-BU
only
Flow switch
PWFY-P100,200 Detects water flow
VM-E1/E2-AU
only
Adjusts compressor suction superheat
- 38 -
DC12V
Opening of a valve driven by
a stepping motor 0-480
pulses
(direct driven type)
P100: ON when water flow is
1.1m3/h or more
P200: ON when water flow is
1.8 m3/h or more
Yellow Brown Blue
¶ Control
[1] Dip Switch Functions and Their Factory Settings
1. Unit
(1) Main board
Error history deleted
Normal
Resets the pre-error data overwrite protection. *4 Keep overwrite protection
Sets the restart interval for the
delay mode. *4, *5
9 seconds
Deleted
Reset overwrite protection *6
9 minutes and 59 seconds
Before power on
*4 This function is available on ver. 1.24 or later.
*5 When setting DipSW3-10 to ON, make sure that the water flow rate in the system is greater than the minimum design amount.
*6 This switch is reset when set from OFF to ON.
- 39 -
2. Frequency control <PWFY-P100VM-E-BU>
• The following table shows the frequency change of the inverter compressor during normal operation.
Model
Frequency/heating
Speed
PWFY-P100VM-E-BU
25~100Hz
2Hz/sec.
(1) Pressure limit
The maximum limit of high pressure (Pd) is set for frequency level. If this limit is exceeded, the frequency will
be reduced every 1 minute.
(2) Discharge temperature limit
• Control is performed 1 min after compressor start-up and every 1 min thereafter.
(3) Periodic frequency control
Frequency control other than the ones performed at startup, upon status change, and for protection is called
periodic frequency control (conversent control) and is performed in the following manner.
1 Periodic control cycle
Periodic control is performed after the following time has passed
(a) 1 min after either compressor start up or the completion of defrost operation
(b) 1 min after frequency control by discharge temperature or by pressure limit
2 The amount of frequency change
The amount of frequency change is controlled to approximate the target value based on the set tempera
ture.
3. Subcool control for Heating or Hot water mode (Linear expantion valve <LEV1W(a,b)>)
• The amount of subcool is controlled by LEV1W(a,b) based on the differential between liquid refrigerant temperature (TH22) and condensing temperature every 1 miniute.
• Defrost operation
(1) Booster Unit (PWFY-P100VM-E-BU)
It stays closed at (LEV1W = 0 pulse) during defrost operation
(2) HEX Unit (PWFY-P100, 200VM-E/E1/E2-AU)
It depends on inletwater temperature (TH6) as below.
defrost start
TB142A IN1
*1. TH7 - Outdoor unit's thermistor for ambient temperature
*2. High or Low mean as below
Open
High
Low
Short
16˚C
Outdoor ambient
temperature(TH7*1)
18˚C
TH6
TH7 < -10
TH7 -10
Inletwater
temperature(TH6)
Low*2
High*2
LEV1Wa, b = opened.
SV as bypass circuit for PHEX = shut off.
LEV1Wa, b = closed.
SV as bypass circuit for PHEX = open.
4. Superheat control for Cooling mode (Linear expantion valve <LEV1Wa,b>)
< PWFY-P100/200VM-E/E1/E2-AU>
• The amount of superheat is controlled by LEV1W(a,b) based on the differential between gas refrigerant temperature (TH23) and liquid refrigerant temperature (TH22) every 1 miniute.
- 40 -
5. Control at initial startup
• When the unit is started for the first time, it will run the following course of operation.
<Flow chart of initial operation mode>
✻Do not operate the unit in the initial operation mode 12 or more hours after power on.
Less than 12 hours after power on
Initial operation mode begins
Frequency is fixed at 25 Hz for one minute after startup.
Initial operation mode completed
6. Control box cooling System <PWFY-P100VM-E-BU>
On the PWFY-P100VM-E-BU model, the cooling fan operates for the period between one minute before
compressor startup and one minute after compressor stoppage to prevent INV temperature from rising.
7. Super heat control of the high-side (R134a) of the binary cycle.
(Linear expansion valve <LEV2W>) <PWFY-P100VM-E-BU>
(1) LEV2W control
(a) LEV2W control range.
0 LEV2W 480 pulses
(b) LEV2W Control method
LEV2W
Hot Water
Pd/Ps < 1.7
Pd/Ps
Down
1.7
TdSH
Down
15
TdSH > 15
SH < 2
Down
2 < SH < 4
Down
SH
5
0
5 < SH
7
Up
4
7 < SH
Up
*TdSH = TH11 - T(63HS)
*Pd/Ps = 6SHS/63LS
*SH = TH13 - T(63LS)
8. Operation mode
(1) Unit operation modes
An operation mode can be selected from the following modes on the remote controller.
PWFY-P100VM-E-BU
PWFY-P100/P200VM-E/E1/E2-AU
1
Hot Water
Heating
2
-
Cooling
- 41 -
• Test Run
[1] Check Items before Test Run
1
Check refrigerant leak, loose power source or transmission line if found.
2
Measure resistance between the power source terminal block and ground with a 500V megger to confirm it is exceeding 1.0MΩ.
Notes: 1. Do not operate the unit when the insulation resistance stays below 1.0MΩ.
2. Never apply a megger to the transmission line terminal block. Otherwise, the control board will be damaged.
3. At immediately after installation or when the unit is left with the main power source turned off for a long time, the insulation
resistance between the power source terminal block and ground may drop down to 1MΩ approximately due to refrigerant
accumulated inside the compressor.
4. Never measure the insulation resistance of the transmission terminal block for the MA remote controller.
3
Confirm that the ball valves of outdoor unit are fully opened at both gas and liquid sides.
Note: 1. Make sure to tighten the cap.
4
Check the input voltage to the power supply terminal block TB2.
[2] Test Run Method
1
A
0
2
9
3
8
TEMP.
ON/OFF
4
7
MENU
BACK
5
MONITOR/SET
PAR-W21MAA
ON/OFF
DAY
CLOCK
INITIAL SETTING
CHECK
CIR.WATER
6
TEST
1
2
3
4
5
6
7
8
9
0
A
*
[Set Temperature] buttons (
Down/
Up buttons)
[TIMER MENU] button (MONITOR/SET button)
[Mode] button (Return button)
[Set Time] buttons (
Back/
Ahead buttons)
[TIMER ON/OFF] button (SET DAY button)
[CHECK] button (CLEAR button)
[TEST RUN] button
Not available
[CIR. WATER] button ( <Enter> button)
Down/
Up buttons)
[INITIAL SETTING] button (
[ON/OFF] button
Opening the lid.
CLEAR
Operation procedures
Turn on the main power.
"PLEASE WAIT" appears on the LCD for up to five minutes.
Press the Test button twice.
"TEST RUN" will appear on the LCD.
Cancel the test run by pressing the ON/OFF button.
Stop
Note 1: Refer to the following pages if an error code appears on the remote controller or when the unit malfunctions.
2: The OFF timer will automatically stop the test run after 2 hours.
[3] Refrigerant
Unit type
Refrigerant type
Refrigerant charge
PWFY-P100VM-E-BU
R134a
1.1kg
- 42 -
[4] Symptoms that do not Signify Problems
Symptom
Remote controller display
Fan does not stop while stopping operation.
Extinguished
When the auxiliary heater is turned on, fan operates
for one minute after stopping to remove residual heat.
The display shown right will appear
on the indoor unit remote controller
for about 5 minutes when the main
power source is turned on.
"PLEASE WAIT" ("HO")
blinking display
The system is under starting up.
Operate the remote controller after the blinking of
“PLEASE WAIT” (“HO”) is disappeared.
Normal display
Sound of the refrigerant flow is
heard from the indoor unit
immediately after starting operation.
Cause
This is caused by the transient instability of the
refrigerant flow and is normal.
[5] Standard operation data
PWFY-P100VM-E-BU
Indoor DB/WB
C
20/-
Outdoor DB/WB
C
7/6
Water flow rate
3
m /h
2.15
Comp discharge temp.
C
92.0
Water inlet
C
65.0
Water outlet
C
70.0
Frequency
Hz
High pressure
kg/cm
Tc
C
100
2
22.5
74.4
2
Low pressure
kg/cm
Te
C
34.4
LEV1
pulse
680
LEV2
pulse
380
7.8
PWFY-P100VM-E/E1/E2-AU
Heating
PWFY-P200VM-E/E1/E2-AU
Cooling
Cooling
Indoor DB/WB
C
20/-
20/-
Indoor DB/WB
C
Heating
20/-
Outdoor DB/WB
C
7/6
35/24
Outdoor DB/WB
C
7/6
35/24
Water flow rate
3
m /h
2.15
1.93
Water flow rate
m3/ h
4.3
3.86
Water inlet
C
30.0
23.0
Water inlet
C
30.0
23.0
Water outlet
C
35.0
18.0
Water outlet
C
35.0
18.0
28.1
High pressure
kg/cm
31
28.4
51.9
47
Tc
C
50.5
47.5
6.5
7.1
Low pressure
6.7
7.4
High pressure
kg/cm
Tc
C
Low pressure
2
kg/cm 2
31.5
2
kg/cm 2
20/-
Te
C
-1.5
0
Te
C
-1.2
1.5
LEV1
pulse
474
220
LEV1
pulse
480
220
- 43 -
ª Troubleshooting
[1] Check Code List
BU: PWFY-P100VM-E-BU
AU: PWFY-P100, 200VM-E/E1/E2-AU
1. Error Code and Preliminary Error Code List
Error
Code
Preliminary
error
code
Error
(preliminary)
detail
code
0403
4300
-
Serial communication error
O
1102
1202
-
Discharge temperature fault
O
1301
1401
-
Low pressure fault
O
1302
-
-
High pressure fault 1
O
1302
1402
-
High pressure fault 2
O
2000
2100
-
Pump interlock error
O
2000
2100
-
Flow switch error
2134
2234
-
Abnormal water temperature
O
O
2135
2235
-
Water-source heat exchanger freezing
O
O
4102
4152
-
Open phase
O
4115
4165
-
Power supply signal sync error
O
[01]
Bus voltage error (PAM damage)
O
[108]
Abnormal bus voltage drop
O
[109]
Abnormal bus voltage rise
O
[121]
Converter Fo error
O
Heatsink overheat protection
O
4220
(Note)
4320
(Note)
Searched unit
Error code definition
Notes
BU
AU
O
4230
4330
-
4250
(Note)
4350
(Note)
[101]
IPM error
O
[102]
ACCT overcurrent (H/W detection)
O
5102
1210
-
Temperature sensor fault (TH22)
O
O
5103
1209
-
Temperature sensor fault (TH23,TH13)
O
O
5104
1202
-
Temperature sensor fault (TH11)
O
5106
2237
-
Temperature sensor fault (TH6)
O
O
5108
2238
-
Temperature sensor fault (TH8)
O
O
5110
1214
-
Temperature sensor fault (THHS)
O
5201
1402
-
High-pressure sensor fault
O
5202
1401
-
Low-pressure sensor fault
O
-
ACCT sensor Shor circuit/open circuit
O
5301
4300
ACCT sensor fault
O
[115]
- 44 -
[2] Responding to Error Display on the Remote Controller
1. Error Code
0403
Serial communication error
2. Error definition and error detection method
Serial communication error between the control board and the INV board on the compressor, and between
the control board and the Fan board
Detail code 01: Between the control board and the INV board
Detail code 05: Between the control board and the Fan board
3. Cause, check method and remedy
(1) Faulty wiring
Check the following wiring connections.
1) Between Control board and INV board
Control board INV board
CN2
CN2
CN4
CN4
(2) INV board failure and Control board failure
Replace the INV board or control board when the power turns on automatically, even if the power source is reset.
Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the
inverter.(page 70)
- 45 -
1. Error Code
1102
Abnormal discharge air temperature
2. Error definition and error detection method
1) If a discharge temperature of 115 C [239 F] or higher is detected (first detection), units will stop, go into the 3-minute
restart delay mode, and automatically restart after three minutes.
2) If a discharge temperature of 115 C [239 F ] or higher is detected again (second detection) within 30 minutes of the
first stoppage of the units as described above, units will stop, go into the 3 minute restart delay mode, and automatically
restart after three minutes.
3) If a discharge temperature of 115 C [239 F ] or higher is detected again (third detection) within 30 minutes of the
second stoppage of the units as described above, the units will come to an abnormal stop, and the error code "1102"
will appear.
4) If a discharge temperature of 115 C [239 F ] or higher is detected after 30 minutes have elapsed after a stoppage
(first or second) of the unit as described above, it is regarded as the first detection and the sequence as described
above will be followed.
5) The period of 30 minutes after a stoppage of the units is considered a preliminary error, and a preliminary error code
will appear on the LED.
3. Cause, check method and remedy
Cause
Check method and remedy
(1)
Gas leak, gas shortage
Refer to the page on refrigerant amount
evaluation.(page 42)
(2)
Overload operation
Check the operating conditions and operational status.
(3)
LEV actuation failure
Refer to the section on troubleshooting the LEV.(page 64)
(4)
Thermistor failure
(TH11)
Check the thermistor resistor.(page 55)
(5)
Input circuit failure on the controller board
thermistor
Check the inlet air temperature on the LED monitor.
(6)
Shortage of circulating water
Check that the pump meets the required specifications.
0.6m3/h~2.15m3/h
(7)
Clogged heat vent outlet
Check that the heat vent outlet (located on the left side of
the unit) is not clogged.
1. Error Code
1301
Abnormal low pressure
2. Error definition and error detection method
When starting the compressor from Stop Mode for the first time if low pressure reads 0.098MPa [14psi]
immediately before start-up, the operation immediately stops.
3. Cause, check method and remedy
Cause
(1)
Inner pressure drop due to a leakage
(2)
Low pressure sensor failure
(3)
Short-circuited pressure sensor cable due to
torn outer rubber
(4)
A pin on the male connector is missing.
(5)
Disconnected wire
(6)
Failure of the low pressure input circuit on the
controller board
(7)
Shortage of circulating water
Check method and remedy
Refer to the section on troubleshooting the low pressure
sensor.(page 62)
Check that the pump meets the required specifications.
0.6m3/h~2.15m3/h
- 46 -
1. Error Code
1302
Abnormal high pressure 1
2. Error definition and error detection method
1) If a pressure of 3.23MPa [468 psi ] or higher is detected during operation, units will stop, go into the 3 minute restart
delay mode, and automatically restart after three minutes.
2) If a pressure of 3.23MPa [468 psi ] or higher is detected again (second detection) within 30 minutes of the first stoppage
of the units, units will stop, go into the 3 minute restart delay mode, and automatically restart after three minutes.
3) If a pressure of 3.23 MPa [468 psi ] or higher is detected again (third detection) within 30 minutes of the second stoppage
of the units, the unit will come to an abnormal stop, and the check code "1302" will appear on the display.
4) If a pressure of 3.23MPa [468 psi ] or higher is detected after 30 minutes have elapsed after a stoppage of the units, it is
regarded as the first detection, and the sequence as described in section 1) above is followed.
5) Preliminary error code will remain on the LED for 30 minutes after the stoppage of the uinit.
6) The outdoor unit makes an error stop immediately when not only the pressure sensor but also the pressure switch detects
3.60+0,-0.15 MPa [522+0,-22 psi]
3. Cause, check method and remedy
Cause
Check method and remedy
(1) LEV actuation failure
Refer to the section on troubleshooting the
LEV.(page 64)
(2) Pressure sensor failure
Refer to the page on the troubleshooting of the high
pressure sensor. (page 61)
(3) Failure of the thermistor input circuit and pressure sensor input circuit on the controller board
Check the temperature and the pressure of the sensor
with LED monitor.
(4) Disconnected male connector on the pressure
switch (63HS) or disconnected wire
Check the temperature and the pressure of the sensor
with LED monitor.
(5) Shortage of circulating water
Check that the pump meets the required specifications.
0.6m3/h~2.15m3/h
1. Error Code
1302
Abnormal high pressure 2 (outdoor unit)
2. Error definition and error detection method
If the pressure of 0.098MPa [14psi] or lower is registered on the pressure sensor immediately before
start-up, it will trigger an abnormal stop, and error code "1302" will be displayed.
3. Cause, check method and remedy
Cause
Check method and remedy
(1)
Inner pressure drop due to a leakage.
Refer to the page on the troubleshooting of the
high pressure sensor.(page 61)
(2)
Pressure sensor failure
(3)
Shorted-circuited pressure sensor cable due to torn
outer rubber
(4)
A pin on the male connector on the pressure sensor
is missing or contact failure
(5)
Disconnected pressure sensor cable
(6)
Failure of the pressure sensor input circuit on the
controller board
- 47 -
1. Error Code
2000
Pump interlock error (BU only)
2. Error definition and error detection method
Preliminary pump interlock error is detected when the pump interlock circuit becomes open while the units are
stopped during Thermo-ON.
When a preliminary error is detected, units will go into the Thermo-OFF state and into the restart-prevention mode.
When the amount of time listed below has elapsed since the time when a given preliminary error was detected, an
error code "2000" will be detected, and the units will come to an abnormal stop.
DipSW3-10=OFF 9 seconds *1
DipSW3-10=ON 9 minutes and 59 seconds *1
*1 When the version of the software is before 1.24, this value will be 9 minutes and 59 seconds regardless of the
DipSW settings.
3. Cause, check method and remedy
Cause
(1)
Pump is not connected properly.
Check method and remedy
Check the pump for proper connection.
Check the pump interlock circuit.
1. Error Code
2000
Flow switch error (AU only)
2. Error definition and error detection method
When the water flow rate of the water supply to the unit is the specified rate or less, the flow switch does not
detect, and the unit will be stopped.
3. Cause, check method and remedy
Cause
(1)
Water shortage
Check method and remedy
Check the water flow rate.
Check the strainer for proper operation.
1. Error Code
2134
Abnormal water temperature
2. Error definition and error detection method
In the case of BU and WH, if the value of TH6 becomes equal to or greater than 85°C, units will stop and go into the
3 minute restart delay mode.
For a period of thirty minutes after units came to a stop is considered a preliminary error.
3. Cause, check method and remedy
Cause
Check method and remedy
Check the pump for proper connection.
(1)
Pump is not connected properly.
(2)
Thermistor fault
Replace thermistor TH6.
(3)
Disconnected thermistor connector
Check the thermistor connector.
- 48 -
1. Error Code
2135
Water heat exchanger freeze up
2. Error definition and error detection method
Condition 1
Condition 2
Condition 3
Condition 4
Condition 5
Both TH22 and TH23 of 1˚C or below have been detected for three minutes in a mode other than Heating Thermo-ON.
If PWFY is running in Heating Thermo-ON mode TH22 of -15˚C or below has been detected for 3 continuous minutes
when the defrost cycle starts
starting from 2 minutes after the start of the defrost cycle.
If PWFY is running in a mode other than Heating TH22 of -15˚C or below has been detected for 3 continuous minutes
Thermo-ON mode when the defrost cycle starts
starting from 4 minutes after the start of the defrost cycle.
TH22 of -8˚C or below has been detected for 90 seconds except during the defrost cycle and while PWFY is running in
modes other than Cooling Thermo-ON.
TH6 or TH8 of 2˚C or below has been detected while the PWFY unit is in operation.
The PWFY unit has a power failure while the outdoor unit is in the defrost cycle.
For a period of 60 minutes after the units came to a stop is considered a preliminary error.
3. Cause, check method and remedy
(1)
(2)
(3)
Cause
Pump is not connected properly.
Shortage of circulating water
Thermistor fault
Disconnected thermistor connector
Check method and remedy
Check the pump for proper connection.
Check the amount of circulating refrigerant.
Replace thermistor TH6, TH8.
Check the thermistor connector.
1. Error Code
4102
Open phase
2. Error definition and error detection method
An open phase of the power supply (L phase, N phase) was detected at power on.
The N phase current is outside of the specified range.
The open phase of the power supply may not always be detected if a power voltage from another circuit is applied.
3. Cause, check method and remedy
Cause
Check method and remedy
Check the input voltage to the power supply terminal block TB2.
(1)
Power supply problem
Open phase voltage of the power supply
Power supply voltage drop
(2)
Noise filter problem
Coils (L1 to L3) problem
Circuit board failure
(3)
Wiring failure
Confirm that the voltage at the control board connector CNAC
is 198 V or above.
If the voltage is below 180V, check the wiring between CNAC2
on the noise filter board and CNAC on the control board.
Check the wiring between the power supply terminal block
(TB2) and the tab terminals LI and NI on the noise filter board.
Check the wiring between the tab terminals LO and NO on the
noise filter board and the ACL.
Check the wiring between the ACL and the tab terminals R
and S on the INV board.
Check the wiring between CN5 on the noise filter board and
CN5 on the INV board.
(4)
Blown fuse
(5)
INV board failure
Check for a blown fuse (F01) on the control board.
→If a blown fuse is found, check for a short-circuiting or earth
fault of the actuator.
Replace the inverter if this problem is detected after the
compressor has gone into operation.
(6)
Control board failure
Check the coil connections.
Check for coil burnout.
Check that the voltage at CNAC2 connector is 198V or above.
Replace the control board if none of the above is causing the
problem.
- 49 -
1.
Error Code
4115
Power supply signal sync error
2.
Error definition and error detection method
The frequency cannot be determined when the power is switched on.
3.
Cause, check method and remedy
Cause
Check method and remedy
(1)
Power supply error
Check the voltage of the power supply terminal block
(TB2).
(2)
Noise filter problem
Coils (L1 to L3) problem
Circuit board failure
(3)
Faulty wiring
Check fuse F01 on the control board.
(4)
Wiring fault
Between CNAC2 on the noise filter board and
CNAC on the control board
Confirm that the voltage at the control board connector
CNAC is 198 V or above.
Check the wiring between the power supply terminal
block (TB2) and the tab terminals LI and NI on the
noise filter board.
(5)
Control board failure
If none of the items described above is applicable,
and if the trouble reappears even after the power is
switched on again, replace the control board.
Check the coil connections.
Check for coil burnout.
Confirm that the voltage at the CNAC2 connector
is 198 V or above.
- 50 -
1. Error Code
4220
Abnormal bus voltage drop (Detail code 108)
2. Error definition and error detection method
If Vdc 200V or less is detected during Inverter operation. (S/W detection)
3. Cause, check method and remedy
(1) Power supply environment.
Check whether the unit makes an instantaneous stop when the detection result is abnormal or a power failure occurs.
Check that the interphase power supply voltage is 198V or above.
(2) Voltage drop detected.
If the bus voltage that appears on the LED monitor is 200V or below during inverter operation, check the following.
1) Replace the control board if the voltage across pins 1-3 of CN631 on the control board is 200V or above
during inverter operation.
2) Checking the wiring connections
1 Check the wiring between the INV board and CN631 on the control board.
2 Check the wiring between the ACL and the tab terminals R and S on the INV board.
3 Check the wiring between the tab terminals LO and NO on the noise filter board and the ACL.
4 Check the wiring between the power supply terminal block (TB2) and the tab terminals LI and NI on the
noise filter board.
3) Noise filter board fault
1 Check for broken coils (L1-L3).
2 Check the RS value → 20Ω ± 5%.
4) Replace the INV board if no problems are found with the above items.
Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the
inverter.(page 70)
1. Error Code
4220
Bus voltage error (PAM damage) (Detail code 01)
2. Error definition and error detection method
PWM circuit error on the INV board is detected.
3. Cause, check method and remedy
(1) INV board failure
Replace the INV board.
Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the
inverter.(page 70)
- 51 -
1. Error Code
4220
Abnormal bus voltage rise (Detail code 109)
2. Error definition and error detection method
If Vdc 380V is detected during inverter operation.
3. Cause, check method and remedy
(1) Different voltage connection.
Check the power supply voltage on the power supply terminal block (TB2).
(2) INV board failure.
Replace the INV board if no problems are found with the power supply.
Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the
inverter.(page 70)
1. Error Code
4220
Converter Fo error (Detail code 121)
2. Error definition and error detection method
INV board converter circuit error is detected.
3. Cause, check method and remedy
(1) INV board failure
Replace the INV board.
Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the
inverter.(page 70)
- 52 -
1. Error Code
4230
Heat sink overheat protection
2. Error definition and error detection method
When the heat sink temperature (THHS) remains at or above 85˚C is detected.
3. Cause, check method and remedy
Cause
Check method and remedy
(1)
Checking the fan wiring.
Check connectors CN506A and CN506B on the control board.
Check the fan wiring for breakage and damage.
(2)
Checking the control
board output voltage
Check the output voltage at CN506A and CN506B on the control
board during inverter operation.
Criteria : Output voltage 22V
Replace the control board if no voltage is output during inverter
operation.
Replace the fan if voltage is output from the control board but the
fan does not operate.
(3)
Checking the air passage
for blockage
Check the heatsink cooling air passage for blockage.
(4)
THHS fault
1)
Check INV board IGBT for proper connection.
Check that heatsink on IGBT is installed properly.
2)
Check the THHS wiring for damage.
Replace the THHS sensor if problems are found.
3)
Check the THHS sensor value on the LED monitor.
Replace the THHS sensor if the values are abnormal.
Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the
inverter.(page 70)
- 53 -
1. Error Code
4250
IPM error (Detail code 101)
2. Error definition and error detection method
Overcurrent is detected while power module error detection signal is output.
3. Cause, check method and remedy
Cause
Check method and remedy
(1)
Check the inverter output wiring
for proper connection.
Check the fan wiring for breakage and damage.
Check that the wiring is connected with correct polarity.
(2)
Compressor failure
Check the compressor for earth fault and short circuit.
Replace the INV board if no problems are found with the above
items.
Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the
inverter.(page 70)
1. Error Code
4250
ACCT overcurrent (H/W detection) (Detail code 102)
2. Error definition and error detection method
Overcurrent 34.5Apeak or 16Arm and above is detected
3. Cause, check method and remedy
Cause
Check method and remedy
(1)
Check the inverter output wiring for proper connection.
Check the fan wiring for breakage and damage.
Check that the wiring is connected with correct
polarity.
(2)
Compressor failure
Check the compressor for earth fault and
short circuit.
Replace the INV board if no problems are
found with the above items.
Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the
inverter.(page 70)
- 54 -
1. Error Code
5102
TH22 temperature sensor failure (BU, AU )
5103
TH13, TH23 temperature sensor failure (BU, AU)
5104
TH11 temperature sensor failure (BU)
5106
TH6 temperature sensor failure (BU, AU )
5108
TH8 temperature sensor failure (BU, AU )
2. Error definition and error detection method
When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected
(the first detection), the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts when the
detected temperature of the thermistor.
When a short or an open is detected again (the second detection) after the first restart of the outdoor unit,
the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected
temperature is within the normal range.
When a short or an open is detected again (the third detection) after the previous restart of the outdoor unit,
the outdoor unit makes an error stop.
When a short or an open of the thermistor is detected just before the restart of the outdoor unit, the outdoor
unit makes an error stop, and the error code "5102", "5103", 5104", "5105", "5106"or "5108" will appear.
During 3-minute antirestart mode, preliminary errors will be displayed on the LED display.
A short or an open described above is not detected for 10 minutes after the compressor start, during defrost
mode, or for 3 minutes after defrost mode.
3. Cause, check method and remedy
Cause
Check method and remedy
(1)
Thermistor failure
Check thermistor resistance.
(2)
Pinched lead wire
Check for pinched lead wire.
(3)
Torn wire coating
Check for wire coating.
(4)
A pin on the male connector is missing or
contact failure
Check connector.
(5)
Disconnected wire
Check for wire.
(6)
Thermistor input circuit failure on the control
board
Check the intake temperature of the sensor with
the LED monitor.
When the temperature is far different from the actual
temperature, replace the control board.
<Reference>
TH22
TH13,TH23
TH11
TH6
TH8
Short detection
70 C [158 F ] and above (0.4 k )
110 C [230 F ] and above (0.4 k )
240 C [464 F ] and above (0.57 k )
70 C [158 F ] and above (0.4 k )
70 C [158 F ] and above (1.14 k )
-40
-40
0
-40
-40
- 55 -
Open detection
C [ -40 F ] and below (130 k
C [ -40 F ] and below (130 k
C [ 32 F ] and below (698 k
C [ -40 F ] and below (130 k
C [ -40 F ] and below (130 k
)
)
)
)
)
1. Error Code
5110
Heat sink failure
2. Error definition and error detection method
When a short or an open of THHS is detected just before or during the inverter operation.
3. Cause, check method and remedy
Cause
(1)
Check method and remedy
INV board failure
If the problem recurs when the unit is put into operation,
replace the INV board.
Refer to section - 5 - "Inverter" under part [3] "Trouble shooting principal parts" for error codes related to the
inverter.(page 70)
1. Error Code
5201
High pressure sensor failure (63HS)
2. Error definition and error detection method
If the high pressure sensor detects 0.098MPa [14psi] or less during the operation, the outdoor unit stops once,
turns to antirestart mode for 3 minutes, and restarts after 3 minutes when the detected high pressure sensor is
0.098MPa [14psi] or more.
If the high pressure sensor detects 0.098MPa [14psi] or less just before the restart, the outdoor unit makes an
error stop, and the error code "5201" will appear.
During 3-minute antirestart mode, preliminary errors will be displayed on the LED display.
A error is not detected for 3 minutes after the compressor start, during defrost operation, or 3 minutes after
defrost operation.
3. Cause, check method and remedy
Cause
Check method and remedy
(1) High pressure sensor failure
Refer to the page on the troubleshooting of the high pressure sensor.
(9 [3] -1-(page 61))
(2) Pressure drop due to refrigerant leak
(3) Torn wire coating
(4) A pin on the male connector is missing or contact failure
(5) Disconnected wire
(6) High pressure sensor input circuit failure on the control board
- 56 -
1. Error Code
5202
Low-pressure sensor fault
2. Error definition and error detection method
When a pressure sensor reading of 4.06 MPa [589 psi] or above is detected, error code "5202" will appear.
The unit will continue its operation by using other sensors as a backup.
3. Cause, check method and remedy
Cause
Check method and remedy
(1)
Low pressure sensor failure
Refer to the page on the troubleshooting of the high pressure sensor.
(9 [3] -1-(page 61))
(2)
Pressure drop due to refrigerant leak
(3)
Torn wire coating
(4)
A pin on the male connector is missing or contact failure
(5)
Disconnected wire
(6)
Low pressure sensor input circuit failure on the control board
1. Error Code
5301
ACCT sensor short circuit/open circuit
2. Error definition and error detection method
Abnormal value is detected by the ACCT sensor detection circuit immediately before inverter startup.
3. Cause, check method and remedy
Cause
Check method and remedy
(1)
INV board failure
Replace the INV board if compressor failure
(see below) is ruled out.
(2)
Compressor failure
Check the compressor for earth fault and short
circuit.
1. Error Code
5301
ACCT sensor fault (Detail code 115)
2. Error definition and error detection method
When the formula "output current < 1.5 Arms" remains satisfied for 10 seconds while the inverter is in operation.
3. Cause, check method and remedy
Cause
Check method and remedy
(1)
Inverter open output phase
Check the output wiring connections.
(2)
Compressor failure
Check the compressor for earth fault and short
circuit.
(3)
INV board failure
If no problems are found with the above items,
replace the INV board.
- 57 -
-1- Troubleshooting according to the remote controller malfunction or the external input error
1. Phenomena
Even if the operation button on the remote controller is pressed, the display remains unlit and the unit does not
start running.(Power indicator
does not appear on the screen.)
2. Cause
1) Power is not supplied to the unit.
The main power to the unit is not turned on.
Connectors on the circuit board are disconnected.
The fuse on the circuit board is blown.
Transformer fault or broken wiring
2) Incorrect wiring for the MA remote controller
Disconnected wire for the MA remote controller or disconnected line to the terminal block.
Short-circuited MA remote controller wiring
Incorrect wiring of the MA remote controller cables
Incorrect connection of the MA remote wiring to the terminal block for transmission line (TB5) on the indoor unit
Wiring mixup between the MA remote controller cable and 200 VAC power supply cable
3)
4)
5)
6)
7)
The number of the MA remote controllers that are connected to an indoor unit exceeds the allowable range (2 units).
The length or the diameter of the wire for the MA remote controller are out of specification.
Short circuit of the wire for the remote display output of the outdoor unit or reversed polarity connection of the relay.
Circuit board fault
MA remote controller failure
3. Check method and remedy
1) Measure voltages of the MA remote controller terminal (among 1 to 3).
If the voltage is between DC 9 and 12V, the remote controller is a failure.
If no voltage is applied, check the causes 1) and 3) and if the cause is found, correct it.
If no cause is found, refer to 2).
2) Remove the wire for the remote controller from the terminal block (TB15) on the MA remote controller for the
indoor unit, and check voltage among 1 to 3.
If the voltage is between DC 9 and 12 V, check the causes 2) and 4) and if the cause is found, correct it.
If no voltage is applied, check the cause 1) and if the cause is found, correct it.
If no cause is found, check the wire for the remote display output (relay polarity).
If no further cause is found, replace the indoor unit board.
- 58 -
1. Phenomena
2. Cause
! " # $ %
&
'()*
" '()* ) +% , -
% '+, &
( 3. Check method and remedy
When 2) and 3) above apply, check code 7102 will be displayed on the self-diagnosis LED.
0
/
2
&&
%
'+, .
(%
1#
" 3*
0
/
.
(% )
(%
!
/
3 !*40
.
(% ,
(% (
.
0
/
( $ &
( - 59 -
1. Phenomena
"HO" or "PLEASE WAIT" display on the remote controller does not disappear, and no operation is performed even
if the button is pressed. ("HO" or "PLEASE WAIT" display will normally turn off 5 minutes later after the power on.)
2.
1)
2)
3)
Cause
The power for the M-NET transmission line is not supplied from the outdoor unit.
Short-circuited transmission line
Incorrect wiring of the M-NET transmission line on the outdoor unit.
Disconnected wire for the MA remote controller or disconnected line to the terminal block.
The male power supply connectors on the multiple outdoor units are connected to the female power supply switch
connector (CN40).
In the system to which the power supply unit for transmission lines is connected, the male power supply connector
is connected to the female power supply switch connector (CN40) on the outdoor unit
4) Broken M-NET transmission line on the unit side
5) Faulty wiring or loose connector between the terminal block for M-NET transmission line connection (TB5) on the
unit and CM2M on the indoor unit circuit board
6) Incorrect wiring for the MA remote controller
Short-circuited wire for the MA remote controller
Disconnected wire for the MA remote controller (No.2) and disconnected line to the terminal block.
Reversed daisy-chain connection between groups
Incorrect wiring for the MA remote controller to the terminal block for transmission line connection (TB5) on the
indoor unit
The M-NET transmission line is connected incorrectly to the terminal block (TB13) for the MA remote controller.
7) The sub/main setting of the MA remote controller is set to sub.
8) 2 or more main MA remote controllers are connected.
9) Circuit board fault (MA remote controller communication circuit)
10) Remote controller failure
11) Outdoor unit failure
3. Check method and remedy
1) When 2) and 3) above apply, check code 7102 will be displayed on the self-diagnosis LED.
Same symptom for all units in a
system with one outdoor unit?
NO
Measure the voltages at the terminal
block for transmission line connection
(TB5) on the unit.
YES
Check the self-diagnosis LED
Check 4.
Is the error code 7102
displayed?
YES
NO
Check
2 and 3.
YES
Check for 5 and 6.
NO
YES
Error found?
17 - 30V?
YES
Correct
the error.
Replace the M-NET remote
controller with the MA
remote controller
Error found?
NO
Circuit board fault or MA
remote controller error
NO
Check (1).
Correct
the error.
- 60 -
[3] T roubleshooting Principal Parts
-1- High-Pressure Sensor (63HS)
1. Compare the pressure that is detected by the high pressure sensor, and the high-pressure gauge pressure to
check for failure.
By configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by
the high-pressure sensor appears on the LED1 on the control board.
SW1
1 2 3 4 5 6 7 8 9 10
ON
(1) While the sensor is stopped, compare the gauge pressure and the pressure displayed on self-diagnosis LED1.
1) When the gauge pressure is between 0 and 0.098MPa [14psi], internal pressure is caused due to gas leak.
2) When the pressure displayed on self-diagnosis LED1 is between 0 and 0.098MPa [14psi], the connector may be
defective or be disconnected. Check the connector and go to (4).
3) When the pressure displayed on self-diagnosis LED1 exceeds 3.60MPa [522psi], go to (3).
4) If other than 1), 2) or 3), compare the pressures while the sensor is running. Go to (2).
(2) Compare the gauge pressure and the pressure displayed on self-diagnosis LED1 while the sensor is running.
(Com-pare them by MPa [psi] unit.)
1) When the difference between both pressures is within 0.098MPa [14psi], both the high pressure sensor and the control
board are normal.
2) When the difference between both pressures exceeds 0.098MPa [14psi], the high pressure sensor has a problem.
(performance deterioration)
3) When the pressure displayed on self-diagnosis LED1 does not change, the high pressure sensor has a problem.
(3) Remove the high pressure sensor from the control board to check the pressure on the self-diagnosis LED1.
1) When the pressure displayed on self-diagnosis LED1 is between 0 and 0.098MPa [14psi], the high pressure sensor
has a problem.
2) When the pressure displayed on self-diagnosis LED1 is approximately 3.60MPa [522psi], the control board has a problem.
(4) Remove the high pressure sensor from the control board, and short-circuit between the No.2 and 3 connectors
(63HS) to check the pressure with self-diagnosis LED1.
1) When the pressure displayed on the self-diagnosis LED1 exceeds 3.60MPa [522psi], the high pressure sensor has a problem.
2) If other than 1), the control board has a problem.
2. Pressure sensor configuration
The high pressure sensor consists of the circuit shown in the figure below. If DC 5V is applied between the red and
the black wires, voltage corresponding to the pressure between the white and the black wires will be output, and the
value of this voltage will be converted by the microcomputer. The output voltage is 0.1028V per 0.098MPa [14psi].
The pressure sensor on the body side is designed to connect to the connector. The connector pin number on the
body side is different from that on the control board side.
Body side
Control board side
Vcc
Pin 1
Pin 3
Vout
Pin 2
Pin 2
GND
Pin 3
Pin 1
63HS
123
Pressure 0 ~ 3.60 MPa [522psi]
Vout 0.5 ~ 3.5 V
0.1028 V / 0.098 MPa [14 psi]
2
3
3.0 [435]
Pressure (MPa [psi])
Connector
1
3.5 [508]
GND (Black)
Vout (White)
2.5 [363]
2.0 [290]
1.5 [218]
1.0 [145]
0.5 [73]
Vcc (DC 5 V)(Red)
0
0
0.5
1
1.5
2
2.5
Output voltage (V)
- 61 -
3
3.5
-2- Low-Pressure Sensor (63LS)
1. Compare the pressure that is detected by the low pressure sensor, and the low pressure gauge pressure to
check for failure.
By configuring the digital display setting switch (SW1) as shown in the figure below, the pressure as measured by
the low-pressure sensor appears on the LED1 on the control board.
SW1
1 2 3 4 5 6 7 8 9 10
ON
(1) While the sensor is stopped, compare the gauge pressure and the pressure displayed on self-diagnosis LED1.
1) When the gauge pressure is between 0 and 0.098MPa [14psi], internal pressure is caused due to gas leak.
2) When the pressure displayed on self-diagnosis LED1 is between 0 and 0.098MPa [14psi], the connector may be
defective or be disconnected. Check the connector and go to (4).
3) When the pressure displayed on self-diagnosis LED1 exceeds 1.7MPa [247psi], go to (3).
4) If other than 1), 2) or 3), compare the pressures while the sensor is running. Go to (2).
(2) Compare the gauge pressure and the pressure displayed on self-diagnosis LED1 while the sensor is running.
(Compare them by MPa [psi] unit.)
1) When the difference between both pressures is within 0.03MPa [4psi], both the low pressure sensor and the control
board are
. normal
2) When the difference between both pressures exceeds 0.03MPa [4psi], the low pressure sensor has a problem.
(performance deterioration)
3) When the pressure displayed on the self-diagnosis LED1 does not change, the low pressure sensor has a problem.
(3) Remove the low pressure sensor from the control board to check the pressure with the self-diagnosis LED1 display.
1) When the pressure displayed on the self-diagnosis LED1 is between 0 and 0.098MPa [14psi], the low pressure
sensor has a problem.
2) When the pressure displayed on self-diagnosis LED1 is approximately 1.7MPa [247psi], the control board has a problem.
When the outdoor temperature is 30 C [86 F] or less, the control board has a problem.
When the outdoor temperature exceeds 30 C [86 F], go to (5).
(4) Remove the low pressure sensor from the control board, and short-circuit between the No.2 and 3 connectors
(63LS:CN63LS) to check the pressure with the self-diagnosis LED1.
1) When the pressure displayed on the self-diagnosis LED1 exceeds 1.7MPa [247psi], the low pressure sensor has a
problem.
2) If other than 1), the control board has a problem.
(5) Remove the high pressure sensor (63HS) from the control board, and insert it into the connector for the low
pressure sensor (63LS) to check the pressure with the self-diagnosis LED1.
1) When the pressure displayed on the self-diagnosis LED1 exceeds 1.7MPa [247psi], the control board has a problem.
2) If other than 1), the control board has a problem.
2. Low-pressure configuration
The low pressure sensor consists of the circuit shown in the figure below. If DC5V is applied between the red and
the black wires, voltage corresponding to the pressure between the white and the black wires will be output, and the
value of this voltage will be converted by the microcomputer. The output voltage is 0.173V per 0.098MPa [14psi].
The pressure sensor on the body side is designed to connect to the connector. The connector pin number on the
body side is different from that on the control board side.
Body side
Control board side
Vcc
Pin 1
Pin 3
Vout
Pin 2
Pin 2
GND
Pin 3
Pin 1
1.8 [261]
Pressure 0 ~ 1.7 MPa [247psi]
Vout 0.5 ~ 3.5 V
0.173 V / 0.098 MPa [14 psi]
Pressure (MPa [psi])
1.6 [232]
63LS
123
1.4 [203]
1.2 [174]
1.0 [145]
0.8 [116]
Connector
0.6 [87]
1
2
3
0.4 [58]
GND (Black)
0.2 [29]
Vout (White)
0
Vcc (DC 5 V)(Red)
0
0.5
1
1.5
2
2.5
Output voltage (V)
- 62 -
3
3.5
-3- Solenoid Valve
Check whether the output signal from the control board and the operation of the solenoid valve match.
Setting the self-diagnosis switch (SW1) as shown in the figure below causes the ON signal of each relay to be
output to the LED's.
Each LED shows whether the relays for the following parts are ON or OFF. LEDs light up when relays are ON.
The circuits on some parts are closed when the relays are ON. Refer to the following instructions.
Display
SW1
LD1
Upper
LD2
LD3
LD4
LD5
LD6
LD7
LD8
SV1
SW1
1 2 3 4 5 6 7 8 9 10
ON
Lower
When there is a problem with a solenoid valve, first check for loose solenoid valve coil, broken lead wire,
incorrect connecter connections on the circuit board, and broken wire at the connectors.
(1) In case of SV1 (Bypass valve)
This solenoid valve opens when powered (Relay ON).
1) This valve turns on during defrost, and its operation can be verified on the LED or by the operation sound it makes
when it closes.
2) The open or closed status of the valve can be verified by measuring the temperature of the pipe at the downstream
of SV1. When the valve is closed, pipes will be hot. Do not touch the pipe to check its temperature.
- 63 -
-4- LEV1W(a,b)
LEV1W(a,b) operation
LEV1W(a,b) are stepping-motor-driven valves that operate by receiving the pulse signals from the indoor and outdoor
unit control boards.
(1) LEV
The valve opening changes according to the number of pulses.
1) Indoor and outdoor unit control boards and the LEV (Indoor unit: Linear expansion valve)
Outdoor control board
Intermediate connector
LEV
4
M
6
5
2
3
1
Blue
DC12V
2
Brown
6
5
Red
5
Drive circuit
Brown
4
1
Blue
4
4
Yellow
3
3
Orange
3
3
2
4
Yellow
2
2
1
6
White
1
1
White Red Orange
Note. The connector numbers on the intermediate connector and the connector on the control board di ffer. Check the color of the lead wire
to judge the number.
2) Pulse signal output and valve operation
Output
(phase)
number
Output state
1
1
ON
2
OFF
3
OFF
4
ON
2
3
ON
OFF
ON
ON
OFF
ON
OFF
OFF
4
OFF
OFF
ON
ON
Output pulses change in the following orders when the
Valve is closed; 1
2
3
4
1
Valve is open; 4
3
2
1
4
*1. When the LEV opening angle does not change,
all the output phases will be off.
*2. When the output is open phase or remains ON,
the motor cannot run smoothly, and rattles and vibrates.
3) LEV valve closing and opening operation
Valve opening (refrigerant flow rate)
D
C
*When the power is turned on, the valve closing signal of 2200 pulses
will be output from the indoor board to LEV to fix the valve position.
It must be fixed at point A .
When the valve operates smoothly, no sound from LEV or no vibration
occurs, however, when the pulses change from E to A in the chart or
the valve is locked, a big sound occurs.
*Whether a sound is generated or not can be determined by
holding a screwdriver against it, then placing your ear against the handle.
Valve closed
Valve open
A
Fully open: 1400 pulses
E
B
Pulses
80 - 100 pulses
- 64 -
(2) Judgment methods and possible failure mode
Malfunction
mode
Microcomputer
driver circuit failure
Judgment method
Remedy
Disconnect the control board connector and connect
the check LED as shown in the figure below.
6
Target
LEV
When the drive circuit has a
problem, replace the control
board.
BU
AU
5
4
3
2
1k
LED
1
resistance : 0.25W 1k
LED : DC15V 20mA or more
When the main power is turned on, the indoor unit circuit board outputs pulse signals to the indoor unit LEV
for 10 seconds, and the outdoor unit circuit board outputs pulse signals to the outdoor unit LEV for 17 seconds.
If any of the LED remains lit or unlit, the drive circuit is
faulty.
LEV mechanism
is locked
If the LEV is locked, the drive motor runs idle, and
makes a small clicking sound.
When the valve makes a closing and opening sound,
the valve has a problem.
Replace the LEV.
BU
AU
Disconnected or
short-circuited
LEV motor coil
Measure resistance between the coils (red - white, red
-orange, brown - yellow, brown - blue) using a tester.
They are normal if resistance is 150ohm 10%.
Replace the LEV coils.
BU
AU
Measure resistance between the coils (red - white, red
-orange, brown - yellow, brown - blue) using a tester.
They are normal if resistance is 46ohm 3%.
Replace the LEV coils.
BU
AU
Incomple sealing To check the LEV for leakage, stop the unit in question, If there is a large amount of
(leak from the
and operate the other units in the cooling mode. Next, leakage, replace the LEV.
valve)
check the temperature of the unit liquid pipe (TH22) on
the service LED. When the unit is stopped, the LEV is
fully closed, so unless there is a leak, the pipe temperature
will not go down. If the liquid pipe temperature is considerably
lower than the water temperature reading on the remote
controller, it indicates a valve closure failure. (The LEV
is not sealed properly.) If the amount of leakage is insignificant
and does not have negative effects, the valve does not
need to be replaced.
AU
Thermistor
(liquid piping
temperature detection)
Linear Expansion Valve
Faulty wire connections in the
connector or
faulty contact
1.
Check for loose pins on the connector and check
the colors of the lead wires visually
2.
Disconnect the control board's connector and
conduct a continuity check using a tester.
- 65 -
Check the continuity at the
points where an error occurs.
BU
AU
(3) LEV coil removal procedure
Motor
Driver
Locknut
Bellows
Valve assembling
Refrigerant Circuit
Valve body side
Orifice
Notes on the procedure
1) Do not put undue pressure on the motor.
2) Do not use motors if dropped.
3) Do not remove the cap until immediately before the procedure.
4) Do not wipe off any molybdenum.
5) Do not remove the packing.
6) Do not apply any other than specified liquid such as screw lock agent, grease and etc.
Molybdenum
Motor
Packing
Cap
- 66 -
Replacement procedure
1) Stop all the indoor and outdoor units. Check that all the units are stopped, and turn off the power to the outdoor unit.
2) Prepare two spanners. Hold the valve body with one spanner and loosen the locknut with another one.
Turning the locknut counter-clockwise from motor side view can loosen it.
Two spanners must be used.
Do not hold the motor with one hand and loosen the locknut with only one spanner.
3) Turning the locknut several times. The locknut will come off and then the motor can be removed.
4) Prepare a motor replacement. Use only factory settings, which the head part of the driver does not come out.Use of
other than factory settings may result in malfunction and failure of valve flow rate control.
5) Keep dust, contaminants, and water out of the space between the motor and the valve body during replacement. (The
space is the mechanical section of the valve.) Do not damage the junction with tools.
After removing the motor, blow N2 gas or etc. into bellows in order to blow off water from inside.
6) Remove the cap of the motor replacement. Joint the axis of the motor and the one of the valve body with the locknut to
stick precisely. Apply screw lock agent to whole part of the screw. Do not introduce screw lock agent into the
motor.
Use new motors if problems are found on the motor during the replacement.
7) After rotating the locknut 2~3 times by hands, hold the valve body with the spanner, and tighten the locknut with the
specified torque with a torque wrench. Apply the tightening torque of 15N m (150kgf cm) (administration value
15 1 N m (150 10kgf cm)).
Note that undue tightening may cause breaking a flare nut.
8) When tightening the locknut, hold the motor with hands so that undue rotary torque and load can not be applied.
9) The differences of relative position after assembling the motor and the valve body do not affect the valve control and
the switching function.
Do not relocate the motor and the valve body after tightening the locknut. Even the relative position is different from
before and after assembling.
Difference in rotational direction is acceptable.
The motor may not be fixed with clamp because of the changing of the motor configuration. However, the fixing is not
necessary due to the pipe fixing.
10) Connect the connector. Do not pull hard on the lead wire. Make sure that the connector is securely inserted into the
specified position, and check that the connector does not come off easily.
11) Turn on the indoor unit, and operate the air conditioner. Check that no problems are found.
- 67 -
(4) LEV2W
The valve opening changes according to the number of pulses.
1) Connections between the control board and LEV2W
Outdoor control board
DC 12V
LEV
4
1
M
6
5
2
3
6
Red
6
5
Brown
5
4
Blue
4
4
3
Orange
3
3
2
Yellow
2
2
1
White
1
1
Drive circuit
2) Pulse signal output and valve operation
Output state
Output
(phase)
number
1
2
3
4
5
6
7
Output pulses change in the following orders when the
Valve is open; 1 2 3 4 5 6 7 8
Valve is closed; 8 7 6 5 4 3 2 1
8
1
ON OFF OFF OFF OFF OFF ON ON
2
ON ON ON OFF OFF OFF OFF OFF
3
OFF OFF ON ON ON OFF OFF OFF
4
OFF OFF OFF OFF ON ON ON OFF
*1. When the LEV opening angle does not change,
all the output phases will be off.
*2. When the output is open phase or remains ON,
the motor cannot run smoothly, and rattles and vibrates.
3) LEV valve closing and opening operation
Valve opening (refrigerant flow rate)
B
*When the power is turned on, the valve closing signal of 520 pulses
will be output from the indoor board to LEV to fix the valve position.
It must be fixed at point A .
(Pulse signal is output for approximately 17 seconds.)
When the valve operates smoothly, there is no sound from the LEV and no
vibration occurs, but when the valve is locked, noise is generated.
*Whether a sound is generated or not can be determined by
holding a screwdriver against it, then placing your ear against the handle.
Valve closed
1
8
*If liquid refrigerant flows inside the LEV, the sound may become smaller.
Valve open
Fully open: 480 pulses
A
Pulses
- 68 -
(5) LEV (LEV2W) coil removal procedure
1) LEV component
As shown in the figure, the outdoor LEV is made in such a way that the coils and the body can be separated.
Body
Coils
Stopper
Lead wire
2) Removing the coils
Fasten the body tightly at the bottom (Part A in the figure) so that the body will not move, then pull out the coils toward the
top.If the coils are pulled out without the body gripped, undue force will be applied and the pipe will be bent.
Part A
3) Installing the coils
Fix the body tightly at the bottom (Part A in the figure) so that the body will not move, then insert the coils from the
top, and insert the coil stopper securely in the pipe on the body. Hold the body when pulling out the coils to prevent
so that the pipe will not be bent.
If the coils are pushed without the body gripped, undue force will be applied and the pipe will be bent. Hold the body
when pulling out the coils to prevent so that the pipe will not be bent.
Part A
- 69 -
-5- Inverter
Replace only the compressor if only the compressor is found to be defective.
Replace the defective components if the inverter is found to be defective.
If both the compressor and the inverter are found to be defective, replace the defective component(s) of both devices.
(1) Inverter-related problems: Troubleshooting and remedies
1) The inverter board has a large-capacity electrolytic capacitor, in which residual voltage remains even after the main power is
turned off, posing a risk of electric shock. Before inspecting the inside of the control box, turn off the power, leave the unit
turned off for at least 10 minutes, and check that the voltage between the pins of CN631 has dropped to 20V or less.
(It takes about 10 minutes to discharge electricity after the power supply is turn off.)
2) If cables are not inserted properly to the Faston terminals or connectors are not connected properly, inverter parts will be
damaged. If a problem occurs after replacing some of the parts, mixed up wiring is often the cause of the problem. Check for
proper connection of the wiring, screws, connectors, and Faston terminals.
3) To avoid damage to the circuit board, do not connect or disconnect the inverter-related connectors with the main power
turned on.
4) Faston terminals have a locking function. Make sure the terminals are securely locked in place after insertion. Press the
tab in the middle of the terminals to remove them.
Squeeze down with your finger
Plastic tab
Cable
5) When replacing the INV (inverter) board, apply a thin layer of grease (supplied with the service parts) evenly to the
radiation plate. Wipe off any grease that may get on the wiring terminal to avoid terminal contact failure.
6) Faulty wiring to the compressor damages the compressor. Connect the wiring in the correct phase sequence.
- 70 -
Error display/failure condition
Measure/inspection item
[1]
Inverter related errors
4102, 4115, 4220, 4230, 4250, 5110, 5301, 0403
Check the details of the inverter error in the error log at 10 . [1 ] LED
Monitor Display.
Take appropriate measures to the error code and the error details in accordance with 9 . [1] Check Code List
[2]
Main power breaker trip
Refer to "(3) Trouble treatment when the main power breaker is
tripped".(page 73)
[3]
Main power earth leakage breaker trip
Refer to "(4) Trouble treatment when the main power earth leakage
breaker is tripped".(page 73)
[4]
Only the compressor does not operate.
Check the inverter frequency on the LED monitor and proceed to (2) [4] if the compressor is in operation.(page 72)
[5]
The compressor vibrates violently at all times or makes an abnormal sound.
See (2)-[4].(page 72)
[6 ]
Noise is picked up by the peripheral device
<1> Check that power supply wiring of the peripheral device does not
run close to the power supply wiring of the outdoor unit.
<2> Check if the inverter output wiring is not running parallel to the
power supply wiring and the transmission lines.
<3> Check that the shielded wire is used as the transmission line when
it is required, and check that the grounding work is performed properly on the shielded wire.
<4> Meg failure for electrical system other than the inverter
<5> Attach a ferrite core to the inverter output wiring. (Contact the factory for details of the service part settings.)
<6> Provide separate power supply to the air conditioner and other
electric appliances.
<7> If the error occurred suddenly, a ground fault of the inverter output
can be considered. See (2)-[4].(page 72)
*Contact the factory for cases other than those listed above.
[7 ]
Sudden malfunction (as a result of external noise.)
<1> Check that the grounding work is performed properly.
<2>Check that the shielded wire is used as the transmission line when
it is required, and check that the grounding work is performed properly on the shielded wire.
<3>Check that neither the transmission line nor the external connection wiring does not run close to another power supply system or
does not run through the same conduit pipe.
* Contact the factory for cases other than those listed above.
- 71 -
(2) Inverter output related troubles
Items to be checked
(1)
[1]
Check the
INV board error detection
circuit.
(2)
Terminals on the
inverter board
Remove the inverter
output cable from
U, V, and W terminals.
Operate the units.
Phenomena
Remedy
1) Overcurrent error
(4250 Detail code No. 101, 102)
Replace the INV board.
2) Converter-related errors
(4220 Detail code No. 01, 108,
109, 121)
Replace the INV board.
3) ACCT sensor circuit failure
(5300 Detail code No.115)
Replace the INV board.
4) IPM open
(5300 Detail code No. [-] None)
Normal
5) Power-supply-related problems occur. Replace the INV board.
Error code : 4115, 4102
Detail code : 01, [-] None
[2]
Check for
compressor
ground fault
or coil error.
Disconnect the compressor
wiring, and check the compressor Meg, and coil resistance.
1) Compressor Meg failure
Error if less than 1 Mohm.
Check that there is no liquid refrigerant in the compressor.
If there is none, replace the compressor.
2) Compressor coil resistance failure
Coil resistance value of 1 ohm
(20˚C [68˚F]): BU, AU
Replace the compressor.
1) Inverter-related problems are detected.
Turn SW5-1 to OFF, and see
item "1."
2) Inverter voltage is not output at the
terminals
Replace the INV board.
(3) Operate the units.
3) There is an voltage imbalance between the wires.
Check the inverter
Greater than 5% imbalance or 5V
output volt-age after the
inverter output frequency 4) There is no voltage imbalance behas stabilized.
tween the wires.
Replace the INV board.
[3]
(1) Remove the inverter
Check whether
output cable from U, V,
the inverter is
and W-W terminals.
damaged.
(No load)
(2) Turn SW5-1 on the
control board to ON.
[4]
Check whether
the inverter is
damaged.
(During compressor operation)
Operate the units.
Check the inverter
output volt-age after the
inverter output frequency
has stabilized.
1) There is an voltage imbalance between the wires.
Greater than 5% imbalance or 5V
- 72 -
Normal
*Turn SW5-1 to OFF.
Replace the INV board.
(3) Trouble treatment when the main power breaker is tripped
Items to be checked
Phenomena
Remedy
[1] Check the breaker capacity.
Use of a non-specified break- Replace it with a specified breaker.
er
[2] Perform Meg check between the
terminals on the power terminal
block TB1.
Zero to several ohm, or Meg
failure
[3] Turn on the power again and
check again.
1) Main power breaker trip
2) No remote control display
[4] Turn on the outdoor unit and check 1) Operates normally without
that it operates normally.
tripping the main breaker.
2) Main power breaker trip
Check each part and wiring.
*Refer to (5) "Simple checking proc edures
for individual components of main inverter
circuit".(page 74)
INV board
Noise filter board
AC reactor
a) The wiring may have been short-circuited. Search for the wire that short-circuited, and repair it.
b) If item a) above is not the cause of the
problem, refer to (2)-[1].
(4) Trouble treatment when the main power earth leakage breaker is tripped
Items to be checked
Phenomena
Remedy
[1] Check the earth leakage breaker
capacity and the sensitivity current.
Use of a non-specified earth
leakage breaker
Replace with a regulation earth leakage
breaker.
[2] Check the resistance at the power
supply terminal block (TB1) with a
megger.
Failure resistance value
Check each part and wiring.
*Refer to (5) "Simple checking proc edures
for individual components of main inverter
circuit".(page 74)
INV board
Noise filter board
AC reactor
[3] Disconnect the compressor wirings and check the resistance of
the compressor with a megger.
Failure compressor if the insulating resistance value is not in
specified range.
Failure when the insulating resistance value is 1 Mohm or
less.
Check that there is no liquid refrigerant in
the compressor. If there is none, replace
the compressor.
The insulation resistance could go down to close to 1Mohm after installation or when the power is kept off for an
extended period of time because of the accumulation of refrigerant in the compressor. If the earth leakage breaker
is triggered, please use the following procedure to take care of this.
Disconnect the wires from the compressor's terminal block.
If the resistance is less than 1 Mohm, switch on the power for the outdoor unit with the wires still disconnected.
Leave the power on for at least 12 hours.
Check that the resistance has recovered to 1 Mohm or greater.
Earth leakage current measurement method
For easy on-site measurement of the earth leakage current, enable the filter with a measurement instrument that
has filter functions as below, clamp all the power supply wires, and measure.
Recommended measurement instrument: CLAMP ON LEAK HiTESTER 3283 made by HIOKI E.E. CORPORATION
When measuring one device alone, measure near the device's power supply terminal block.
- 73 -
(5) Simple checking procedure for individual components of main inverter circuit
Leave the power turned off for 10 minutes, check that the voltage between pins 1 and 3 of CN631 on the control
board is 20V or below, and remove the circuit board or the parts from the control box. When any problem is found
with the circuit board or other parts, replace them.
Part name
Judgment method
INV board
See " Inver ter output related troubles "( 9 [3] - 5 - (2) )(page 72)
Noise filter board
(Inrush current
limiting resistor)
Measure the resistance between terminal RS: 20 ohm
Noise filter board
(Electromagnetic
relay 52C)
This electromagnetic relay is rated at DC12V and is driven by a coil.
Check the resistance between terminals (52C on the noise filter board)
Parts
Coil
Contact
DC reactor ACL
10%
Checkpoints
Criterion value
Not to be short-circuited
Between pins 1 and 2 of CN52C (Center value 16 ohm)
Both ends of RS
20 ohm
10%
Measure the resistance between terminals: 1ohm or lower (almost 0 ohm)
Measure the resistance between terminals and the chassis:
- 74 -
[4] Maintenance
1. Section 1 Recovering and charging refrigerant from the R134a side
Before replacing the parts on PWFY-P100VM-E-BU
(compressor, LEV, strainer (ST2), PHEX), be sure to
take the following steps.
[Recovering the refrigerant]
1. Stop all indoor and outdoor units, and turn off all
power supplies to the units.
1) Check that all indoor and outdoor units are stopped.
2. Recover all refrigerant remaining inside the unit through
the check joint.
Do not release the extracted refrigerant into the atmosphere.
[Charging refrigerant]
1. Evacuate air from the unit through the check joint.
Refer to section 1-[8] "Vacuum Drying" for detailed procedures.
2. Charge 1.1 kg of R134a through the check joint.
Check the Service Manual that came with the
outdoor unit for how to recover refrigerant from
or charge refrigerant into the outdoor units.
Check joint (CJ)
[Cleaning the water strainer]
1. Remove the caulking used to fill the space
between the insulation material and the unit.
2. Peel off the tape that is holding insulation
material together.
3. Remove the strainer, take the net out, and
clean it with a brush.
To remove the strainer, hold part A with a pipe
wrench so that the strainer will not move, and
loosen part B with a spanner.
Use two spanners to tighten or loosen the
strainer.
4. When cleaning is finished, replace the parts
in the reverse order as they were removed.
Caulking material
Peel off the tape.
Part A
Part B
Remove the strainer
and clean it.
[Replacing the strainer]
1. Remove the caulking used to fill the space
between the insulation material and the unit.
Caulking material
B
Peel off the tape.
2. Peel off the tape that is holding insulation
material together.
Rotation direction
3. Hold part A with a spanner, and loosen part B
with a spanner by turning it counterclockwise,
and remove the strainer.
Use two spanners to tighten or loosen the
strainer.
A
4. Replace the parts in the reverse order as they
were removed.
- 75 -
[Replacing the parts on PWFY-P100VM-E-BU]
Recover the refrigerant before replacing the parts.
Refer to section 1 "Recovering the refrigerant"
for how to recover the refrigerant.
1. Stop all indoor and outdoor units, and turn off all
power supplies to the units.
1) Check that all indoor and outdoor units are stopped.
2. Recover all refrigerant remaining inside the unit
through the check joint.
Do not release the extracted refrigerant into the
atmosphere.
[Replacing the compressor]
1. Debraze the parts on the pipe that are marked
with an arrow, and replace the compressor.
2. After replacement is complete, securely connect
the cables, and place the cover (A) back on.
Brazed part
Discharge pipe
U phase
(wire color: red)
Cover (A)
V phase
(wire color: white)
W phase
(wire color: black)
Front
Check joint
- 76 -
[Replacing the LEV]
Replacing LEV1
1. Debraze the parts on the pipe that are indicated in the figure, and replace LEV1.
2. Connect the connector to CNLVC on the circuit board.
In the case of PWFY-P200VM-E/E1/E2-AU, connect the connectors to CNLVB and CNLVC on the circuit board.
Replacing LEV2
1. Debraze the parts on the pipe that are indicated in the figure, and replace LEV1.
2. Connect the connector to CNLVA on the circuit board after installation is complete.
LEV2 : Brazed part
LEV1 : Brazed parts
LEV1 : Brazed parts
[Replacing the heat exchanger]
Replacing the refrigerant-refrigerant heat exchanger
1. Cut the part that is indicated in the figure.
2. Debraze the parts on the pipe that are indicated in the figure.
3. Rebraze the debrazed parts after replacement.
*PWFY-P100VM-E/E1/E2-AU only has one LEV.
Replacing the water-refrigerant heat exchanger
1. Debraze the parts on the pipe that are indicated in the figure.
2. Rebraze the debrazed parts after replacement.
Refrigerant-refrigerant heat exchanger
Brazed parts
CUT
Brazed part
Brazed parts
Brazed part
Water - refrigerant heat exchanger
Water - refrigerant heat exchanger
*Common to PWFY-P100/P200VM-E/E1/E2-AU
- 77 -
[Replacing the strainer]
1. Debraze the parts on the pipe that are indicated
in the figure.
2. Rebraze the debrazed parts after replacement.
ST2
Brazed parts
[Replacing the solenoid valve]
1. Unscrew the screws.
2. Debraze the parts on the pipe that are indicated
in the figure.
3. Rebraze the debrazed parts after replacement.
4. Connect the connector to CN502 on the circuit
board.
<PWFY-P100/P200VM-E/E1-AU>
<PWFY-P100/P200VM-E2-AU>
Screw
Screw
(SVG)
Screw
(SV1)
Brazed parts
(SV1)
Brazed parts
Brazed parts
(SVL)
*Common to PWFY-P100/P200VM-E1/E2-AU
- 78 -
Brazed parts
(SVG)
Screw
(SVL)
[Replacing the check valve]
1. Debraze the parts on the pipe that are indicated
in the figure.
2. Rebraze the debrazed parts after replacement.
<PWFY-P100/P200VM-E/E1-AU>
<PWFY-P100/P200VM-E2-AU>
Brazed parts
(CV1)
Brazed parts
(CV2)
Brazed parts
[Replacing the strainer ST3, ST4]
1. Debraze the parts on the pipe that are indicated
in the figure.
2. Rebraze the debrazed parts after replacement.
<PWFY-P100/P200VM-E/E1-AU>
<PWFY-P100/P200VM-E2-AU>
ST2
ST4*
Brazed parts
Brazed parts
(ST2)
*ST3 in the case of P100VM-E/E1/E2-AU
- 79 -
ST4*
Brazed parts
0
LED display
[1] LED Monitor Display
1. How to Read the LED on the Service Monitor
(1) How to read the LED
By setting the DIP SW 2-1 through 2-10 (Switch number 10 is represented by 0), the operating condition of the unit can be
monitored on the service monitor. (Refer to the table on the following pages for DIP SW settings.)
The service monitor uses 4-digit 7-segment LED to display numerical values and other types of information.
7SEG LED
SW2
1
2
3
4
5
6
7
8
9 10
ON
SW1-10 is represented as "0" in the table.
Pressure and temperature are examples of numerical values, and operating conditions and the on-off status of solenoid valve
are examples of flag display.
1) Display of numerical values
Example: When the pressure data sensor reads 18.8kg/cm2 (Item No. 55)
The unit of pressure is in kg/cm2
Use the following conversion formula to convert the displayed value into
a value in SI unit.
Value in SI unit (MPa) = Displayed value (kg/cm2) x 0.098
2) Flag display
Example: Pump interlock
Upper
Lower
LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8
(2) LED display at initial setting
From power on until the completion of initial settings, the following information will be displayed on the monitor screen.
(Displays No. 1 through No. 4 in order repeatedly.)
No
Item
Display
Remarks
Software version
1
[0104] : Version 1.04
Refrigerant type
2
[ 134] : R134A
Model and capacity
[A-04] : PWFY-P100VM-E-AU
[A-08] : PWFY-P200VM-E-AU
[b-04] : PWFY-P100VM-E-BU
3
Communication address
4
[ 01] : Address 1
After the initial settings have been completed, the information on these items can be checked by making the switch setting
that corresponds to No. 261 in the LED display table.
Only item No. 1 "Software Version" appears on the display if there is a wiring failure between the control board and the transmission line power supply board or if the circuit board has failed.
- 80 -
(3) Time data storage function
If an error (including a preliminary error) occurs, the error history data and the error detection time are stored into the service
memory.
The error detection time stored in the service memory and the current time can be seen on the service LED.
1) Use the time displayed on the service LED as a reference.
2) The date and the time are set to "00" by default.
3) The time is not updated while the power of the indoor unit is turned off. When the power is turned off and then on again, the
count will resume from the time before the power was turned off. Thus, the time that differs the actual time will be displayed.
(This also applies when a power failure occurs.)
(3)-1 Reading the time data:
1) Time display
Example: 12 past 9
* Disappears if the time data is deviated due to a power failure, or if a
system controller that sets the time is not connected.
2) Date display
When the main controller that can set the time is connected
Example: May 10, 2003
Alternate display
Alternate display of year and month, and date
* Appears between the year and the month, and nothing appears
when the date is displayed.
When the main controller that can set the time is not connected
Example: 52 days after power was turned on
Alternate display
Day count
* Appears between the year and the month, and nothing
appears when the date is displayed.
- 81 -
- 82 -
0000000000
1000000000
0100000000
1100000000
0010000000
1010000000
0110000000
1110000000
0001000000
1001000000
0101000000
1101000000
0011000000
1011000000
0111000000
1111000000
0000100000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1234567890
SW1
0
No.
Current data
Item
0000 to 9999
Operation status
External signal
External signal
52C
LD5
3-minutes restart mode
-99.9 to 999.9
Compressor in
operation
Preliminary error
0000 to 9999
Contact point
demand
LD4
LD6
Error
0000 to 9999 (Address and error codes highlighted)
SV1
LD3
Contact point demand
capacity
Outlet
LD2
0000 to 9999
Inlet
Comp in operation
LD1
Display
Communication demand capacity
TH0
Preset temperature
Error code display 2
Preliminary BU/WH error
Error code display 1
BU/WH error
Relay output display 1
Lighting
LED monitor display
3-minutes restart after instantaneous
power failure
Pump interlock
(Contact:
open)
BU
LD7
CPU in operation
LD8
If not demanded controlled, "----" [ % ] appears on the display.
If not demanded controlled, "----" [ % ] appears on the display.
Display of the latest preliminary error
If no preliminary errors
are detected, "----" appears on the display.
Remarks
- 83 -
1000100000
0100100000
1100100000
0010100000
1010100000
0110100000
1110100000
0001100000
1001100000
0101100000
1101100000
0011100000
1011100000
0111100000
1111100000
0000010000
1000010000
0100010000
1100010000
0010010000
1010010000
0110010000
1110010000
0001010000
1001010000
0101010000
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
1234567890
SW1
17
No.
Current data
Control mode
BC controller operation
mode
Operation mode
Item
Stop
Standby
Heating
Hot
Water
Permit
Cooling
OFF
LD2
Cooling
ON
LD1
Abnormal stop
Prohibit
Heating
ECO
Heating
ON
LD3
Scheduled
control
Defrost
Antifreeze
Heating
OFF
LD4
Display
Cooling
LD5
Defrost
LD6
High frequency
oil recovery
LD7
Low frequency
oil recovery
Stop
LD8
Remarks
- 84 -
0001110000
1001110000
0101110000
1101110000
0011110000
1011110000
0111110000
1111110000
0000001000
1000001000
56
57
58
59
60
61
62
63
64
65
Test-run mode
LD5
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
Power failure
LD4
0000 to 9999
0000 to 9999
-99.9 to 999.9
-99.9 to 999.9
COMP output frequency
COMP 1 primary current
COMP operating current
0 to 480
0000 to 9999
COMP control frequency
LEV2
LEV1
-99.9 to 999.9
Anti-freeze
LD3
Low-pressure sensor
data
Refrigerant recovery
LD2
-99.9 to 999.9
LD1
Display
High-pressure sensor
data
THHS1
TH8
TH6
TH22
TH13/TH23
TH11
Control mod
Item
LD6
*1 Output frequency of the inverter depends on the type of compressor and equals the integer multiples of the operating frequency of the compressor.
1110110000
55
1010110000
0110110000
53
54
1000110000
49
0010110000
0000110000
48
52
1111010000
47
0100110000
0111010000
46
1100110000
1011010000
45
50
0011010000
44
51
1101010000
1234567890
SW1
43
No.
Current data
LD7
LD8
The unit is [Arms]
The unit is [Arms]
The unit is [rps]
Compressor operating
frequency (*1)
The unit is [rps]
LEV opening (Fully
open : 480)
The unit is [kgf/cm2]
The unit is [ C]
The unit is [ C]
Remarks
- 85 -
1100001000
0010001000
1010001000
0110001000
1110001000
0001001000
1001001000
0101001000
1101001000
0011001000
1011001000
0111001000
1111001000
0000101000
1000101000
0100101000
1100101000
0010101000
1010101000
0110101000
1110101000
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
0100001000
1234567890
SW1
66
No.
Current data
0000 to 9999
LD5
0000 to 9999
0000 to 9999
0000 to 9999
Lower 4 digits of the
number of COMP startstops
Upper 4 digits of operation time (excluding
stoppage time)
Lower 4 digits of operation time (excluding
stoppage time)
Td rise
0000 to 9999
Upper 4 digits of the
number of COMP startstops
Backup
0000 to 9999
Lower 4 digits of COMP
operation time
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
LD4
0000 to 9999
Low-pressure
drop
LD3
Upper 4 digits of COMP
operation time
LD2
-99.9 to 999.9
High-pressure
rise
LD1
Display
Td*
SC
SH
Target SC
Target SH
Te
Tc
COMP bus voltage
Item
LD6
LD7
LD8
Circulating water
replacement indicator
timer
The unit is [ h ]
The unit is [ C]
The unit is [ V ]
Remarks
- 86 -
0111101000
1111101000
0000011000
1000011000
0100011000
1100011000
0010011000
94
95
96
97
98
99
100
0001011000
1001011000
0101011000
1101011000
0011011000
1011011000
0111011000
1111011000
0000111000
1000111000
0100111000
1100111000
0010111000
104
105
106
107
108
109
110
111
112
113
114
115
116
1110011000
1011101000
93
103
0011101000
92
1010011000
1101101000
91
0110011000
0101101000
90
101
1001101000
102
0001101000
89
1234567890
SW1
88
No.
Current data
Item
LD1
LD2
LD3
LD4
Display
LD5
LD6
LD7
LD8
Remarks
- 87 -
1101111000
0011111000
1011111000
0111111000
1111111000
0000000100
1000000100
0100000100
1100000100
0010000100
1010000100
0110000100
1110000100
0001000100
123
124
125
126
127
128
129
130
131
132
133
134
135
136
0011000100
1011000100
0111000100
1111000100
0000100100
1000100100
140
141
142
143
144
145
1101000100
0101111000
122
139
1001111000
121
1001000100
0001111000
120
0101000100
1110111000
119
137
0110111000
138
1010111000
118
1234567890
SW1
117
No.
Current data
Item
LD1
LD2
LD3
LD4
Display
LD5
LD6
LD7
LD8
Remarks
- 88 -
0101100100
1101100100
0011100100
1011100100
0111100100
1111100100
0000010100
1000010100
0100010100
154
155
156
157
158
159
160
161
162
1110010100
0001010100
1001010100
0101010100
1101010100
0011010100
1011010100
0111010100
167
168
169
170
171
172
173
174
0110010100
1001100100
153
166
0001100100
152
1010010100
1110100100
151
165
0110100100
150
1100010100
1010100100
149
0010010100
0010100100
148
163
1100100100
164
0100100100
147
1234567890
SW1
146
No.
Current data
Item
LD1
LD2
LD3
LD4
Display
LD5
LD6
LD7
LD8
Remarks
- 89 -
SW1
1111010100
0000110100
1000110100
176
177
1234567890
175
No.
Current data
Item
LD1
LD2
LD3
LD4
Display
LD5
LD6
LD7
LD8
Remarks
- 90 -
SW1
0100001100
194
0000 to 9999
Display
LD5
200
Error details of inverter (0001-0120)
Error details of inverter
1110001100
0001001100
199
0000 to 9999
Error details of inverter (0001-0120)
0000 to 9999
Error details of inverter (0001-0120)
0000 to 9999
Error details of inverter (0001-0120)
0000 to 9999
Error details of inverter (0001-0120)
0000 to 9999
Error details of inverter (0001-0120)
0000 to 9999
Error details of inverter (0001-0120)
0000 to 9999
Error details of inverter (0001-0120)
0000 to 9999
Error details of inverter (0001-0120)
0000 to 9999
Error details of inverter (0001-0120)
LD4
0000 to 9999
LD3
Error history of inverter
(At the time of last data
backup before error)
LD2
0110001100
LD1
Error details of inverter (0001-0120)
Error history 10
Error details of inverter
Error history 9
Error details of inverter
Error history 8
Error details of inverter
Error history 7
Error details of inverter
Error history 6
Error details of inverter
Error history 5
Error details of inverter
Error history 4
Error details of inverter
Error history 3
Error details of inverter
Error history 2
Error details of inverter
Error history 1
Item
Error details of inverter
198
1000001100
193
1010001100
0000001100
192
197
1111110100
191
1100001100
0111110100
190
0010001100
1011110100
189
196
0011110100
188
195
1101110100
187
0001110100
184
1001110100
1110110100
182
183
0101110100
0110110100
181
185
1010110100
180
186
1100110100
0010110100
179
0100110100
1234567890
178
No.
Error history
LD6
LD7
LD8
Address and error codes
highlighted
If no errors are detected,
"---- " appears on the display.
Remarks
- 91 -
0010101100
1010101100
0110101100
1110101100
0001101100
1001101100
0101101100
1101101100
0011101100
1011101100
0111101100
1111101100
213
214
215
216
217
218
219
220
221
222
223
0000101100
208
212
1111001100
207
1100101100
0111001100
206
211
1011001100
205
0100101100
0011001100
204
210
1101001100
203
1000101100
0101001100
202
209
1001001100
1234567890
SW1
201
No.
Data before error
TH8
TH6
TH22
TH13/TH23
TH11
Preset temperature
Relay output display 1
Lighting
Control mode
BC controller operation
mode
Operation mode
Operation status
Item
Comp in operation
Stop
Refrigerant recovery
Standby
Heating
Hot
Water
Permit
Cooling
OFF
LD2
Cooling
ON
BC operation
signal
LD1
SV1
Anti-freeze
Abnormal stop
Prohibit
Heating
ECO
Heating
ON
3-minutes restart mode
LD3
52C
Test-run mode
Cooling
Preliminary error
LD5
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
Power failure
Scheduled
control
Defrost
Antifreeze
Heating
OFF
Compressor in
operation
LD4
Display
Defrost
Error
LD6
BU
High frequency
oil recovery
3-minutes restart after instantaneous
power failure
LD7
Always lit
Low frequency
oil recovery
Stop
Preliminary low
pressure error
LD8
The unit is [ C]
Items No. 201 through
No. 255 indicate abnormal unit stoppage or preliminary error data.
Remarks
- 92 -
0001011100
1001011100
232
233
0010111100
1010111100
0110111100
1110111100
244
246
247
1100111100
243
245
1000111100
0100111100
241
0000111100
240
242
0111011100
1111011100
238
239
1011011100
1110011100
231
237
0110011100
230
0011011100
1010011100
229
236
0010011100
228
1101011100
1100011100
227
235
0100011100
226
0101011100
1000011100
234
0000011100
225
1234567890
SW1
224
No.
Data before error
LD5
-99.9 to 999.9
LD4
-99.9 to 999.9
COMP operating current
SH
Target SC
Target SH
Te
Tc
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
-99.9 to 999.9
0000 to 9999
-99.9 to 999.9
COMP 1 primary current
COMP bus voltage
0000 to 9999
0000 to 9999
0 to 480
0000 to 9999
COMP output frequency
COMP control frequency
LEV2
LEV1
-99.9 to 999.9
LD3
Low-pressure sensor
data
LD2
-99.9 to 999.9
LD1
Display
High-pressure sensor
data
THHS1
Item
LD6
LD7
LD8
The unit is [ C]
The unit is [ V ]
The unit is [ Arms]
The unit is [ Arms]
Compressor operating
frequency
The unit is [ rps]
The unit is [ rps]
LEV opening (Fully
open : 480)
The unit is [kgf/cm2]
Remarks
- 93 -
0111111100
1111111100
0000000010
254
255
256
0101000010
1101000010
0011000010
1011000010
0111000010
1111000010
0000100010
266
268
269
270
271
272
1001000010
265
267
1110000010
0001000010
0110000010
262
263
1010000010
264
0010000010
260
261
1100000010
1011111100
253
259
0011111100
252
0100000010
1101111100
251
258
0101111100
250
1000000010
1001111100
249
257
0001111100
1234567890
SW1
248
No.
Data before error
0000 to 9999
Lower 4 digits of the
number of COMP startstops
BC controller address
BC address
INV version 1
OC address
LD7
0.00 to 99.99
OC address
S/W version -> Refrigerant type -> Model and capacity -> Communication address display
Count-up display of number of connected units
RC address
Version / capacity
LD6
The unit displays its own address and the model code alternately.
0000 to 9999
Upper 4 digits of the
number of COMP startstops
Unit address
LD5
-99.9 to 999.9
LD4
0000 to 9999
LD3
Lower 4 digits of COMP
operation time
LD2
0000 to 9999
LD1
Display
Upper 4 digits of COMP
operation time
SC
Item
LD8
The unit is [ h ]
Remarks
- 94 -
0101010010
1101010010
0011010010
298
300
1001010010
297
299
1110010010
0001010010
0110010010
294
295
1010010010
293
296
0010010010
292
1011100010
285
1100010010
0011100010
284
291
1101100010
283
0100010010
0101100010
282
290
1001100010
281
1000010010
0001100010
280
0000010010
1110100010
279
289
0110100010
278
288
1010100010
277
1111100010
0010100010
276
287
1100100010
275
0111100010
0100100010
286
1000100010
274
1234567890
SW1
273
No.
Data before error
Item
LD1
LD2
LD3
LD4
Display
LD5
LD6
LD7
LD8
Remarks
- 95 -
SW1
1000001010
0100001010
1100001010
0010001010
1010001010
0110001010
1110001010
0001001010
1001001010
321
323
324
325
326
327
328
329
0000001010
320
322
1111110010
319
1001110010
313
0111110010
0001110010
312
1011110010
1110110010
311
318
0110110010
310
317
1010110010
309
0011110010
0010110010
308
316
1100110010
307
0101110010
0100110010
306
1101110010
1000110010
305
314
0000110010
304
315
0111010010
1111010010
302
303
1011010010
1234567890
301
No.
Current data
Item
LD1
LD2
LD3
LD4
Display
LD5
LD6
LD7
LD8
Remarks
- 96 -
0011101010
1011101010
0111101010
350
0110101010
342
349
1010101010
341
348
0010101010
340
1101101010
1100101010
339
347
0100101010
338
0101101010
1000101010
337
1001101010
0000101010
336
346
1111001010
335
345
0111001010
334
0001101010
1011001010
333
344
0011001010
332
1110101010
1101001010
343
0101001010
331
1234567890
SW1
330
No.
Current data
Item
LD1
LD2
LD3
LD4
Display
LD5
LD6
LD7
LD8
Remarks
- 97 -
0111011010
1111011010
0000111010
1000111010
0100111010
1100111010
0010111010
1010111010
0110111010
1110111010
0001111010
1001111010
0101111010
367
368
369
370
371
372
373
374
375
376
377
378
0101011010
362
366
1001011010
361
1011011010
0001011010
360
0011011010
1110011010
359
365
0110011010
358
364
1010011010
357
1101011010
0010011010
356
363
0100011010
1100011010
1000011010
353
354
0000011010
352
355
1111101010
1234567890
SW1
351
No.
Data on indoor unit system
Item
LD1
LD2
LD3
LD4
Display
LD5
LD6
LD7
LD8
Remarks
- 98 -
1101000110
1011000110
0111000110
1111000110
0000100110
1000100110
0100100110
1100100110
0010100110
1010100110
0110100110
1110100110
397
398
399
400
401
402
403
404
405
406
407
0101000110
394
0011000110
1001000110
393
395
0001000110
392
396
0110000110
1110000110
1010000110
389
390
0010000110
388
391
1100000110
0000000110
384
387
1111111010
383
1000000110
0111111010
382
0100000110
1011111010
381
385
0011111010
380
386
1101111010
1234567890
SW1
379
No.
Data on indoor unit system
Item
LD1
LD2
LD3
LD4
Display
LD5
LD6
LD7
LD8
Remarks
- 99 -
0001100110
1001100110
0101100110
1101100110
0011100110
1011100110
0111100110
1111100110
0000010110
1000010110
0100010110
1100010110
0010010110
1010010110
0110010110
1110010110
0001010110
1001010110
0101010110
1101010110
0011010110
1011010110
0111010110
1111010110
0000110110
1000110110
0100110110
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
1234567890
SW1
408
No.
Item
Time of error detection 1
Current time -2
Current time
Data on indoor unit system
LD1
LD2
LD3
LD5
00:00 to 23:59
00.00 to 99.12/1 to 31
00:00 to 23:59
LD4
Display
LD6
LD7
LD8
Hour: minute
Year and month, and date
alternate display
Hour: minute
Remarks
- 100 -
1100110110
0010110110
1010110110
0110110110
1110110110
0001110110
1001110110
0101110110
1101110110
0011110110
1011110110
0111110110
1111110110
0000001110
1000001110
0100001110
1100001110
0010001110
1010001110
0110001110
1110001110
0001001110
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
1234567890
SW1
435
No.
Item
LD5
00.00 to 99.12/1 to 31
00:00 to 23:59
00.00 to 99.12/1 to 31
00:00 to 23:59
00.00 to 99.12/1 to 31
00:00 to 23:59
00.00 to 99.12/1 to 31
00:00 to 23:59
00.00 to 99.12/1 to 31
00:00 to 23:59
00.00 to 99.12/1 to 31
00:00 to 23:59
00.00 to 99.12/1 to 31
00:00 to 23:59
00.00 to 99.12/1 to 31
00:00 to 23:59
00.00 to 99.12/1 to 31
00:00 to 23:59
00.00 to 99.12/1 to 31
LD4
00.00 to 99.12/1 to 31
LD3
Time of last data backup before
error -2
LD2
00:00 to 23:59
LD1
Display
Time of last data backup before
error
Time of error detection 10-2
Time of error detection 10
Time of error detection 9-2
Time of error detection 9
Time of error detection 8-2
Time of error detection 8
Time of error detection 7-2
Time of error detection 7
Time of error detection 6-2
Time of error detection 6
Time of error detection 5-2
Time of error detection 5
Time of error detection 4-2
Time of error detection 4
Time of error detection 3-2
Time of error detection 3
Time of error detection 2-2
Time of error detection 2
Time of error detection 1-2
Data on indoor unit system
LD6
LD7
LD8
Year and month, and date
alternate display
Hour: minute
Year and month, and date
alternate display
Hour: minute
Year and month, and date
alternate display
Hour: minute
Year and month, and date
alternate display
Hour: minute
Year and month, and date
alternate display
Hour: minute
Year and month, and date
alternate display
Hour: minute
Year and month, and date
alternate display
Hour: minute
Year and month, and date
alternate display
Hour: minute
Year and month, and date
alternate display
Hour: minute
Year and month, and date
alternate display
Hour: minute
Year and month, and date
alternate display
Remarks
- 101 -
1011101110
1111101110
0000011110
1000011110
0100011110
1100011110
0010011110
1010011110
479
480
481
482
483
484
485
0011101110
476
0111101110
1101101110
475
477
0101101110
474
478
0001101110
1001101110
472
1110101110
471
473
0110101110
1100101110
0010101110
467
468
470
0100101110
466
1010101110
1000101110
465
469
0000101110
464
1011001110
461
0111001110
0011001110
460
1111001110
1101001110
459
462
0101001110
458
463
1001001110
1234567890
SW1
457
No.
Data on indoor unit system
Item
LD1
LD2
LD3
LD4
Display
LD5
LD6
LD7
LD8
Remarks
- 102 -
0100111110
1100111110
0010111110
1010111110
0110111110
1110111110
0001111110
1001111110
498
499
500
501
502
503
504
505
1111111110
1000111110
497
0111111110
0000111110
496
511
1111011110
495
510
0111011110
494
1011111110
1011011110
493
509
0011011110
492
0011111110
1101011110
491
508
0101011110
490
0101111110
1001011110
489
1101111110
0001011110
488
506
1110011110
487
507
0110011110
1234567890
SW1
486
No.
LD3
LD4
0 to 254
LD2
INV board 1 WDT Reset counter
LD1
Display
0 to 254
Item
Control board WDT Reset
counter
Data on indoor unit system
LD5
LD6
LD7
LD8
Remarks

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