service manual
SPLIT-TYPE, AIR TO WATER HEAT PUMP
August 2015
SERVICE MANUAL
Outdoor unit
[Model Name]
PUHZ-SW75VHA
PUHZ-SW100VHA
PUHZ-SW100YHA
PUHZ-SW120VHA
PUHZ-SW120YHA
Salt proof model
PUHZ-SW75VHA-BS
PUHZ-SW100VHA-BS
PUHZ-SW100YHA-BS
PUHZ-SW120VHA-BS
PUHZ-SW120YHA-BS
No. OCH533
REVISED EDITION-D
R410A
[Service ref.]
PUHZ-SW75VHA.UKPUHZ-SW75VHAR3.UK
PUHZ-SW75VHAR4.UK
PUHZ-SW100VHA.UKPUHZ-SW100VHAR3.UK
PUHZ-SW100VHAR4.UK
PUHZ-SW100YHA.UKPUHZ-SW100YHAR1.UK
PUHZ-SW100YHAR3.UKPUHZ-SW100YHAR4.UK
PUHZ-SW120VHA.UKPUHZ-SW120VHAR3.UK
PUHZ-SW120VHAR4.UK
PUHZ-SW120YHA.UKPUHZ-SW120YHAR1.UK
PUHZ-SW120YHAR3.UKPUHZ-SW120YHAR4.UK
Revision:
• Added
PUHZ-SW75VHAR4.UK,
PUHZ-SW75VHAR4-BS.UK,
PUHZ-SW100VHAR4.UK,
PUHZ-SW100VHAR4-BS.UK,
PUHZ-SW100YHAR4.UK,
PUHZ-SW100YHAR4-BS.UK,
PUHZ-SW120VHAR4.UK,
PUHZ-SW120VHAR4-BS. UK,
PUHZ-SW120YHAR4.UK and
PUHZ-SW120YHAR4-BS.UK
in REVISED EDITION-D.
• Some descriptions have
been modified.
PUHZ-SW75VHA-BS.UKPUHZ-SW75VHAR3-BS.UK
PUHZ-SW75VHAR4-BS.UK
PUHZ-SW100VHA-BS.UKPUHZ-SW100VHAR3-BS.UK • Please void OCH533
REVISED EDITION-C.
PUHZ-SW100VHAR4-BS.UK
PUHZ-SW100YHA-BS.UKPUHZ-SW100YHAR1-BS.UK Note:
PUHZ-SW100YHAR3-BS.UKPUHZ-SW100YHAR4-BS.UK • This manual describes
service data of the outdoor
PUHZ-SW120VHA-BS.UKPUHZ-SW120VHAR3-BS.UK
units only.
PUHZ-SW120VHAR4-BS.UK
PUHZ-SW120YHA-BS.UKPUHZ-SW120YHAR1-BS.UK
PUHZ-SW120YHAR3-BS.UKPUHZ-SW120YHAR4-BS.UK
CONTENTS
1. TECHNICAL CHANGES................................. 2
2. REFERENCE MANUAL.................................. 3
3. SAFETY PRECAUTION.................................. 4
4. FEATURES...................................................... 8
5. SPECIFICATIONS........................................... 9
6. DATA.............................................................. 13
7. OUTLINES AND DIMENSIONS.................... 15
8. WIRING DIAGRAM....................................... 17
9. WIRING SPECIFICATIONS........................... 24
10. REFRIGERANT SYSTEM DIAGRAM............... 25
11. TROUBLESHOOTING................................... 27
12. DISASSEMBLY PROCEDURE...................... 82
PARTS CATALOG (OCB533)
PUHZ-SW75VHA.UK
PUHZ-SW75VHA-BS.UK
1
TECHNICAL CHANGES
Service ref. have been changed as follows.
PUHZ-SW75VHAR3(-BS).UK
PUHZ-SW100VHAR3(-BS).UK
PUHZ-SW100YHAR3(-BS).UK
PUHZ-SW120VHAR3(-BS).UK
PUHZ-SW120YHAR3(-BS).UK
PUHZ-SW75VHAR4(-BS).UK
PUHZ-SW100VHAR4(-BS).UK
PUHZ-SW100YHAR4(-BS).UK
PUHZ-SW120VHAR4(-BS).UK
PUHZ-SW120YHAR4(-BS).UK
PUHZ-SW75VHA(-BS).UK
PUHZ-SW100VHA(-BS).UK
PUHZ-SW100YHAR1(-BS).UK
PUHZ-SW120VHA(-BS).UK
PUHZ-SW120YHAR1(-BS).UK
PUHZ-SW75VHAR3(-BS).UK
PUHZ-SW100VHAR3(-BS).UK
PUHZ-SW100YHAR3(-BS).UK
PUHZ-SW120VHAR3(-BS).UK
PUHZ-SW120YHAR3(-BS).UK
PUHZ-SW100YHA(-BS).UK
PUHZ-SW120YHA(-BS).UK
PUHZ-SW100YHAR1(-BS).UK
PUHZ-SW120YHAR1(-BS).UK
• A compliance with ErP directive Lot 1 has been authorized.
• All circuit boards (C.B./P.B./N.F./CONV.B) have been changed (including a change of production site).
• Added a new function "Energy Monitor" which allows remote controller to display power consumption and heat output.
• Power circuit board (P.B.) has been changed.
OCH533D
2
2
REFERENCE MANUAL
INDOOR UNIT SERVICE MANUAL
Model name
Service ref.
Service manual No.
EHST20C-VM6HB
EHST20C-YM9HB
EHST20C-TM9HB
EHST20C-VM2B
EHST20C-VM6B
EHST20C-YM9B
EHST20C-VM6EB
EHST20C-YM9EB
EHST20C-VM6SB
EHST20C-VM6HB.UK
EHST20C-YM9HB.UK
EHST20C-TM9HB.UK
EHST20C-VM2B.UK
EHST20C-VM6B.UK
EHST20C-YM9B.UK
EHST20C-VM6EB.UK
EHST20C-YM9EB.UK
EHST20C-VM6SB.UK
OCH531
EHSC-VM2B
EHSC-VM6B
EHSC-YM9B
EHSC-TM9B
EHSC-VM6EB
EHSC-YM9EB
ERSC-VM2B
EHSC-VM2B.UK
EHSC-VM6B.UK
EHSC-YM9B.UK
EHSC-TM9B.UK
EHSC-VM6EB.UK
EHSC-YM9EB.UK
ERSC-VM2B.UK
OCH532
EHST20C-VM2C
EHST20C-VM6C
EHST20C-YM9C
EHST20C-TM9C
EHST20C-VM2EC
EHST20C-VM6EC
EHST20C-YM9EC
EHST20C-MHCW
EHST20C-MEC
ERST20C-VM2C
ERST20C-MEC
EHST20C-VM2C(R1).UK
EHST20C-VM6C(R1).UK
EHST20C-YM9C(R1).UK
EHST20C-TM9C(R1).UK
EHST20C-VM2EC(R1).UK
EHST20C-VM6EC(R1).UK
EHST20C-YM9EC(R1).UK
EHST20C-MHCW(R1).UK
EHST20C-MEC(R1).UK
ERST20C-VM2C(R1).UK
ERST20C-MEC(R1).UK
OCH570
EHSC-MEC
EHSC-VM2C
EHSC-VM2EC
EHSC-VM6C
EHSC-VM6EC
EHSC-YM9C
EHSC-YM9EC
EHSC-TM9C
ERSC-MEC
ERSC-VM2C
EHSC-MEC(R1).UK
EHSC-VM2C(R1).UK
EHSC-VM2EC(R1).UK
EHSC-VM6C(R1).UK
EHSC-VM6EC(R1).UK
EHSC-YM9C(R1).UK
EHSC-YM9EC(R1).UK
EHSC-TM9C(R1).UK
ERSC-MEC(R1).UK
ERSC-VM2C(R1).UK
OCH571
OCH533D
3
3
SAFETY PRECAUTION
3-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must disconnected.
Preparation before the repair service.
Precautions during the repair service.
• Prepare the proper tools.
• Prepare the proper protectors.
• Provide adequate ventilation.
• After stopping the operation of the air conditioner, turn off
the power-supply breaker.
• Discharge the condenser before the work involving
the electric parts.
• Do not perform the work involving the electric parts
with wet hands.
• Do not pour water into the electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating cycle.
• When the repair or the inspection of the circuit needs to be
done without turning off the power,
exercise great caution not to touch the live parts.
3-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
Use new refrigerant pipes.
Do not use refrigerant other than R410A.
In case of using the existing pipes for R22, be careful with
the following:
· Be sure to perform replacement operation before test run.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
If other refrigerant (R22, etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.
Make sure that the inside and outside of refrigerant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil, etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Contamination inside refrigerant piping can cause deterioration of refrigerant oil, etc.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
Tools for R410A
Flare tool
Size adjustment gauge
Vacuum pump adaptor
Electronic refrigerant
charging scale
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
Do not use a charging cylinder.
If large amount of mineral oil enters, that can cause deterioration of refrigerant oil, etc.
If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.
Charge refrigerant from liquid phase of gas
cylinder.
Use the specified refrigerant only.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
OCH533D
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
4
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is a syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Unit
Gravimeter
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No.
1
Tool name
Gauge manifold
Specifications
· Only for R410A
· Use the existing fitting specifications. (UNF1/2)
· Use high-tension side pressure of 5.3MPa·G or over.
2
Charge hose
· Only for R410A
3
Electronic scale
4
Gas leak detector
· Use the detector for R134a, R407C or R410A.
5
Adaptor for reverse flow check
· Attach on vacuum pump.
6
Refrigerant charge base
7
Refrigerant cylinder
· Use pressure performance of 5.09MPa·G or over.
—
—
· Only for R410A
· Top of cylinder (Pink)
· Cylinder with syphon
8
Refrigerant recovery equipment
OCH533D
—
5
3-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES
Flowchart
• Refer to the flowchart below to determine if the existing pipes can be used and if it is necessary to use a filter dryer.
• If the diameter of the existing pipes is different from the specified diameter, refer to technological data materials to confirm if the pipes can be used.
Measure the existing pipe thickness and
check for damage.
The existing pipe thickness does not meet
specifications or the pipes are damaged.
The existing pipe thickness meets specifications and the pipes are not damaged.
▼
Check if the existing outdoor unit can operate.
▼
After operating the cooling system for about 30
minutes, do a pump down work.
• If the existing outdoor unit cannot operate, use
a refrigerant recovery device to collect the refrigerant.
▼
Disconnect the existing outdoor unit from the
pipes.
Use new pipes for SW75, SW100 and SW120 models.
▼
Attach the new outdoor unit
▼
Perform the airtight test, vacuum air purging,
additional refrigerant charging (if necessary),
and gas leak check.
▼
The existing pipes cannot be reused.
Use new pipes.
3-4. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL
Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the performance of the unit.
1.Avoid installing the unit in a location where it will be exposed directly to seawater or sea breeze.
2.If the cover panel may become covered with salt, be sure to install the unit in a location where the salt will be washed away
by rainwater. (If a sunshade is installed, rainwater may not clean the panel.)
3.To ensure that water does not collect in the base of the outdoor unit, make sure that the base is level, not at angle. Water
collecting in the base of the outdoor unit could cause rust.
4.If the unit is installed in a coastal area, clean the unit with water regularly to remove any salt build-up.
5.If the unit is damaged during installation or maintenance, be sure to repair it.
6.Be sure to check the condition of the unit regularly.
7.Be sure to install the unit in a location with good drainage.
OCH533D
6
Cautions for refrigerant piping work
New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same
as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working
pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.
1 Thickness of pipes
Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness
shown below. (Never use pipes of 0.7mm or below.)
Diagram below: Piping diameter and thickness
Thickness (mm)
Nominal
Outside
dimensions(inch) diameter (mm)
R410A
R22
0.8
0.8
6.35
1/4
0.8
0.8
9.52
3/8
0.8
0.8
12.70
1/2
1.0
1.0
15.88
5/8
—
1.0
19.05
3/4
2 Dimensions of flare cutting and flare nut
The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that,
R410A is a refrigerant, which has higher risk of leakage because its working pressure is higher than that of other refrigerants. Therefore, to enhance airtightness and strength, flare cutting dimension of copper pipe for R410A has been
specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A
also has partly been changed to increase strength as shown below. Set copper pipe correctly referring to copper pipe
flaring dimensions for R410A below. For 1/2 and 5/8 inch pipes, the dimension B changes.
Use torque wrench corresponding to each dimension.
Dimension A
Dimension B
Flare cutting dimensions
Nominal
Outside
dimensions(inch)
diameter
6.35
1/4
9.52
3/8
12.70
1/2
15.88
5/8
19.05
3/4
(mm)
Dimension A ( +0
-0.4 )
R410A
R22
9.0
9.1
13.0
13.2
16.2
16.6
19.4
19.7
—
23.3
Flare nut dimensions
Outside
Nominal
diameter
dimensions(inch)
6.35
1/4
9.52
3/8
12.70
1/2
15.88
5/8
19.05
3/4
(mm)
Dimension B
R410A
R22
17.0
17.0
22.0
22.0
24.0
26.0
27.0
29.0
—
36.0
3 Tools for R410A (The following table shows whether conventional tools can be used or not.)
R410A tools
Can R22 tools be used? Can R407C tools be used?
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester oil and alkylbenzene
Ester oil:
Alkylbenzene oil: minimum amount
oil (minimum amount)
Prevent compressor malfunction Tool exclusive for R410A
Safety charger
when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out Tool exclusive for R410A
Charge valve
when detaching charge hose
Vacuum drying and air
Tools for other refrigerants can
Vacuum pump
(Usable if equipped
(Usable if equipped
with adapter for reverwith adapter for reverpurge
be used if equipped with adapse flow)
se flow)
ter for reverse flow check
Flaring work of piping
Tools for other refrigerants
Flare tool
(Usable by adjusting
(Usable by adjusting
can be used by adjusting
flaring dimension)
flaring dimension)
flaring dimension
Bend the pipes
Tools for other refrigerants can be used
Bender
Tools for other refrigerants can be used
Cut the pipes
Pipe cutter
Tools for other refrigerants can be used
Welder and nitrogen gas cylinder Weld the pipes
Tools for other refrigerants can be used
Refrigerant charging scale Refrigerant charge
Vacuum gauge or thermis- Check the degree of vacuum. (Vacuum Tools for other refrigerants
valve prevents back flow of oil and refri- can be used
tor vacuum gauge and
gerant to thermistor vacuum gauge)
vacuum valve
Refrigerant charge
Charging cylinder
Tool exclusive for R410A
: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)
: Tools for other refrigerants can be used under certain conditions.
: Tools for other refrigerants can be used.
Tools and materials
Gauge manifold
Charge hose
Gas leak detector
Refrigerant recovery equipment
Refrigerant cylinder
Applied oil
OCH533D
Use
Air purge, refrigerant charge
and operation check
Gas leak check
Refrigerant recovery
Refrigerant charge
Apply to flared section
7
4
FEATURES
PUHZ-SW75VHA
PUHZ-SW75VHA-BS
PUHZ-SW100VHA
PUHZ-SW100YHA
PUHZ-SW120VHA
PUHZ-SW120YHA
PUHZ-SW100VHA-BS
PUHZ-SW100YHA-BS
PUHZ-SW120VHA-BS
PUHZ-SW120YHA-BS
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
(Maximum 10 m (PUHZ-SW75–120))
The refrigerant circuit with LEV (Linear Expansion Valve) and accumulator always control the optimal refrigerant level regardless of the length (10 m maximum and 5 m minimum) of piping. The additional refrigerant charging work during installation often
causes problems. Heretofore it is completely eliminated. This unique system improves the quality and reliability of the work done.
It also helps to speed up the installation time.
OCH533D
8
5
SPECIFICATIONS
<Reference data> Plate heat exchanger (ACH70-40 plates)
PUHZ-SW75VHA(-BS).UK
PUHZ-SW75VHAR3(-BS).UK
Nominal water flow
Heating
(A7/W35)
Capacity
Heating
(A2/W35)
Heating
(A2/W45)
Capacity
22.9
Nominal water flow
8.00
Heating
(A7/W35)
4.40
kW
kW
1.82
3.40
kW
2.35
Capacity
kW
7.50
COP
kW
2.20
Capacity
kW
7.50
COP
Heating
(A2/W45)
2.83
kW
7.10
EER
Heating
(A7/W45)
Heating
(A2/W35)
Heating
(A2/W45)
Capacity
Cooling
(A35/W18)
4.01
kW
Cooling
(A35/W7)
Cooling
(A35/W18)
32.1
kW
11.2
4.45
Power input
kW
2.51
Capacity
kW
11.2
COP
3.42
Power input
kW
3.27
Capacity
kW
10.0
COP
3.32
Power input
kW
3.02
Capacity
kW
10.0
COP
Nominal water flow
Capacity
2.66
kW
3.76
L/min
26.1
kW
9.10
EER
2.75
Power input
kW
3.31
Capacity
kW
10.0
EER
Power input
4.35
kW
2.30
Note: "COP" and "Power input" in the above table do NOT
contain the "pump input (based on EN 14511)".
OCH533D
COP
9
3.23
Power input
kW
4.95
Capacity
kW
12.0
COP
3.24
Power input
kW
3.70
Capacity
kW
12.0
COP
Capacity
2.52
kW
4.76
L/min
35.8
kW
12.5
EER
2.32
Power input
kW
5.38
Capacity
kW
14.0
EER
Power input
1.77
L/min
COP
Power input
16.0
6.60
PUHZ-SW100VHA(-BS).UKPUHZ-SW100VHAR3(-BS).UK
PUHZ-SW100YHA(-BS).UKPUHZ-SW100YHAR1/R3(-BS).UK
Heating
(A7/W35)
kW
Cooling
(A35/W7)
Capacity
4.10
Capacity
Nominal water flow
2.59
16.0
3.90
Power input
2.55
kW
kW
18.9
kW
45.9
Power input
L/min
kW
L/min
COP
2.65
Power input
Nominal water flow
Capacity
kW
EER
Power input
Heating
(A2/W35)
3.40
Power input
Capacity
Heating
(A7/W45)
8.00
Power input
Nominal water flow
Cooling
(A35/W18)
kW
COP
Power input
Cooling
(A35/W7)
L/min
COP
Power input
Heating
(A7/W45)
PUHZ-SW120VHA(-BS).UKPUHZ-SW120VHAR3(-BS).UK
PUHZ-SW120YHA(-BS).UKPUHZ-SW120YHAR1/R3(-BS).UK
Rating conditions
Nominal operating condition
Heating (A7/W35)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
Heating (A7/W45)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
Heating (A2/W35)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
Heating (A2/W45)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
Cooling (A35/W7)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
Cooling (A35/W18)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
4.08
kW
3.43
+ 7°C
+ 6°C
+ 30°C/+ 35°C
+ 7°C
+ 6°C
+ 40°C/+ 45°C
+ 2°C
+ 1°C
+ 30°C/+ 35°C
+ 2°C
+ 1°C
+ 40°C/+ 45°C
+ 35°C
+ 24°C
+ 12°C/+ 7°C
+ 35°C
+ 24°C
+ 23°C/+ 18°C
PUHZ-SW120VHAR4(-BS).UK
PUHZ-SW120YHAR4(-BS).UK
PUHZ-SW75VHAR4(-BS).UK
Nominal water flow
Heating
(A7/W35)
Capacity
L/min
22.9
Nominal water flow
kW
8.00
Heating
(A7/W35)
COP
Heating
(A7/W45)
4.40
Power input
kW
1.82
Capacity
kW
8.00
COP
Power input
Heating
(A2/W35)
Capacity
3.40
kW
kW
COP
Heating
(A2/W45)
kW
2.20
Capacity
kW
7.50
Nominal water flow
Capacity
2.83
Power input
Capacity
Heating
(A7/W35)
Capacity
kW
kW
7.10
4.43
1.60
L/min
32.1
kW
11.2
4.45
Power input
kW
2.51
Capacity
kW
11.2
3.42
Power input
kW
3.27
Capacity
kW
10.0
3.32
Power input
kW
3.01
Capacity
kW
10.0
COP
Power input
Nominal water flow
Cooling
(A35/W7)
Capacity
2.66
kW
3.76
L/min
26.1
kW
9.10
EER
Cooling
(A35/W18)
2.75
Power input
kW
3.31
Capacity
kW
10.0
EER
Power input
OCH533D
COP
4.35
kW
2.30
Cooling
(A35/W18)
kW
4.95
Capacity
kW
12.0
COP
3.24
Power input
kW
3.70
Capacity
kW
12.0
COP
Capacity
2.52
kW
4.76
L/min
35.8
kW
12.5
EER
2.32
Power input
kW
5.39
Capacity
kW
14.0
EER
Power input
Rating conditions
Nominal operating condition
Heating (A7/W35)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
Heating (A7/W45)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
Heating (A2/W35)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
Heating (A2/W45)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
Cooling (A35/W7)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
Cooling (A35/W18)
Outside air temperature (Dry-bulb)
Outside air temperature (Wet-bulb)
Water temperature (inlet/outlet)
10
3.23
Power input
Power input
2.31
kW
COP
Heating
(A2/W45)
16.0
6.60
COP
Heating
(A2/W35)
kW
Cooling
(A35/W7)
COP
Heating
(A7/W45)
Capacity
Nominal water flow
2.86
4.10
3.90
18.9
kW
16.0
kW
L/min
PUHZ-SW100VHAR4(-BS).UK
PUHZ-SW100YHAR4(-BS).UK
Nominal water flow
Heating
(A2/W45)
kW
Power input
2.65
EER
Power input
Heating
(A2/W35)
45.9
COP
kW
EER
Cooling
(A35/W18)
7.50
Power input
Power input
Cooling
(A35/W7)
2.35
3.40
COP
Heating
(A7/W45)
Capacity
L/min
4.08
kW
3.43
+ 7°C
+ 6°C
+ 30°C/+ 35°C
+ 7°C
+ 6°C
+ 40°C/+ 45°C
+ 2°C
+ 1°C
+ 30°C/+ 35°C
+ 2°C
+ 1°C
+ 40°C/+ 45°C
+ 35°C
+ 24°C
+ 12°C/+ 7°C
+ 35°C
+ 24°C
+ 23°C/+ 18°C
PUHZ-SW75VHA.UK
PUHZ-SW75VHAR3.UK
PUHZ-SW75VHA-BS.UK
PUHZ-SW75VHAR3-BS.UK
Single, 50Hz, 230V
19
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
TNB220FLHMT
1.3
Inverter
HP switch
Comp. surface thermo
Discharge thermo
Over current detection
—
Plate fin coil
Propeller fan o 1
0.074
55(1,940)
Reverse cycle
48
51
950(37-3/8)
330+30(13+1-3/16)
943(37-1/8)
75(165)
R410A
3.2(7.0)
0.87(FV50S)
9.52(3/8)
15.88(5/8)
Flared
Flared
Maximum 10 m
2 to 40 m
Service Ref.
OUTDOOR UNIT
Power supply (phase, cycle, voltage)
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan
Fan(drive) o No.
Fan motor output
Airflow
Defrost method
Noise level
REFRIGERANT PIPING
Dimensions
Weight
Refrigerant
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
A
kW
W
kW
K/min(CFM)
Cooling
Heating
W
D
H
dB
dB
mm (in)
mm (in)
mm (in)
kg (lb)
kg (lb)
L
mm (in)
mm (in)
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
PUHZ-SW75VHAR4.UK
PUHZ-SW75VHAR4-BS.UK
Single, 50Hz, 230V
17
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
SNB220FAGMC-L1
1.5
Inverter
HP switch
Comp. surface thermo
Discharge thermo
Over current detection
—
Plate fin coil
Propeller fan o 1
0.074
55(1,940)
Reverse cycle
48
51
950(37-13/32)
330+30(13+1-3/16)
943(37-1/8)
75(166)
R410A
3.2(7.0)
0.60(FV50S)
9.52(3/8)
15.88(5/8)
Flared
Flared
Maximum 30 m
2 to 40 m
Service Ref.
OUTDOOR UNIT
Power supply (phase, cycle, voltage)
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan
Fan(drive) o No.
Fan motor output
Airflow
Defrost method
Noise level
REFRIGERANT PIPING
Dimensions
Weight
Refrigerant
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
OCH533D
A
kW
W
kW
K/min(CFM)
Cooling
Heating
W
D
H
dB
dB
mm (in)
mm (in)
mm (in)
kg (lb)
kg (lb)
L
mm (in)
mm (in)
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
11
Service Ref.
OUTDOOR UNIT
Power supply (phase, cycle, voltage)
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan
Fan(drive) o No.
Fan motor output
Airflow
Defrost method
Noise level
Dimensions
Weight
Refrigerant
REFRIGERANT PIPING
Connection method
Between the indoor &
outdoor unit
kW
W
kW
K/min(CFM)
Cooling
Heating
W
D
H
dB
dB
m (in)
mm (in)
mm (in)
kg (lb)
kg (lb)
Charge
Oil (Model)
Pipe size O.D.
A
OUTDOOR UNIT
Power supply (phase, cycle, voltage)
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Dimensions
Weight
Refrigerant
REFRIGERANT PIPING
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
OCH533D
4.6(10.2)
1.40(FV50S)
9.52(3/8)
15.88(5/8)
Flared
Flared
Maximum 30 m
2 to 75 m
L
Liquid
mm (in)
Gas
mm (in)
Indoor side
Outdoor side
Height difference
Piping length
PUHZ-SW100YHA.UK
PUHZ-SW100YHAR3.UK
PUHZ-SW100YHAR4.UK
PUHZ-SW100YHA-BS.UK
PUHZ-SW100YHAR3-BS.UK
PUHZ-SW100YHAR4-BS.UK
Service Ref.
Crankcase heater
Heat exchanger
Fan
Fan(drive) o No.
Fan motor output
Airflow
Defrost method
Noise level
PUHZ-SW100VHA.UK
PUHZ-SW120VHA.UK
PUHZ-SW100VHAR3.UK
PUHZ-SW120VHAR3.UK
PUHZ-SW120VHAR4.UK
PUHZ-SW100VHAR4.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW100VHA-BS.UK
PUHZ-SW120VHAR3-BS.UK
PUHZ-SW100VHAR3-BS.UK
PUHZ-SW120VHAR4-BS.UK
PUHZ-SW100VHAR4-BS.UK
Single 50Hz, 230V
29.5
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
ANB42FNEMT
ANB33FNEMT
2.5
2.5
Inverter
HP switch
LP switch
Discharge thermo
Comp. surface thermo
Over current detection
—
Plate fin coil
Propeller fan o 2
0.074+0.074
100(3,353)
Reverse cycle
50
51
54
54
950(37-13/32)
330+30(13+1-3/16)
1,350(53-1/8)
118(261)
R410A
A
kW
ANB33FNDMT
2.5
W
kW
K/min(CFM)
Cooling
Heating
W
D
H
dB
dB
m (in)
mm (in)
mm (in)
kg (lb)
50
54
kg (lb)
PUHZ-SW120YHA.UK
PUHZ-SW120YHAR3.UK
PUHZ-SW120YHAR4.UK
PUHZ-SW120YHA-BS.UK
PUHZ-SW120YHAR3-BS.UK
PUHZ-SW120YHAR4-BS.UK
3 phase, 50Hz, 400V
13
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
Inverter
HP switch
LP switch
Discharge thermo
Comp.surface thermo
Over current detection
—
Plate fin coil
Propeller fan o 2
0.074+0.074
100(3,353)
Reverse cycle
950(37-13/32)
330+30(13+1-3/16)
1,350(53-1/8)
130(287)
R410A
4.6(10.1)
L
Liquid
mm (in)
Gas
mm (in)
Indoor side
Outdoor side
Height difference
Piping length
1.40(FV50S)
9.52(3/8)
15.88(5/8)
Flared
Flared
Maximum 30 m
2 to 75 m
12
ANB42FNDMT
2.5
51
54
6
DATA
6-1. REFILLING REFRIGERANT CHARGE (R410A : kg)
Piping length (one way)
Service Ref.
Initial
10 m
20 m
30 m
40 m
50 m
60 m
75 m
charged
PUHZ-SW75VHA(-BS).UK
PUHZ-SW75VHAR3(-BS).UK
3.2
3.6
4.0
4.6
—
—
—
3.2
PUHZ-SW75VHAR4(-BS).UK
3.2
3.35
3.5
4.1
—
—
—
3.2
PUHZ-SW100VHA(-BS).UK
PUHZ-SW100VHAR3(-BS).UK
PUHZ-SW100YHA(-BS).UK
PUHZ-SW100YHAR1(-BS).UK
PUHZ-SW100YHAR3(-BS).UK
4.6
4.8
5.0
5.6
6.2
6.8
7.4
4.6
PUHZ-SW100V/YHAR4(-BS).UK
4.6
4.8
5.0
5.6
6.2
6.8
7.5
4.6
PUHZ-SW120VHA(-BS).UK
PUHZ-SW120VHAR3(-BS).UK
PUHZ-SW120YHA(-BS).UK
PUHZ-SW120YHAR1(-BS).UK
PUHZ-SW120YHAR3(-BS).UK
4.6
4.8
5.0
5.6
6.2
6.8
7.4
4.6
PUHZ-SW120V/YHAR4(-BS).UK
4.6
4.8
5.0
5.6
6.2
6.8
7.5
4.6
Additional charge is required for pipes
longer than 10 m.
6-2. COMPRESSOR TECHNICAL DATA PUHZ-SW75VHA.UK
PUHZ-SW75VHAR3.UK
PUHZ-SW75VHA-BS.UK
PUHZ-SW75VHAR3-BS.UK
PUHZ-SW75VHAR4.UK
PUHZ-SW75VHAR4-BS.UK
PUHZ-SW100VHA.UK
PUHZ-SW100VHAR3.UK
PUHZ-SW100VHAR4.UK
PUHZ-SW100VHA-BS.UK
PUHZ-SW100VHAR3-BS.UK
PUHZ-SW100VHAR4-BS.UK
TNB220FLHMT
SNB220FAGMC-L1
ANB33FNEMT
U-V
0.88
0.95
0.19
U-W
0.88
0.95
0.19
W-V
0.88
0.95
0.19
Service Ref.
Compressor model
Winding
Resistance
(")
(at 20°C)
(at 20°C)
Service Ref.
PUHZ-SW100YHA.UK
PUHZ-SW100YHAR1.UK
PUHZ-SW100YHAR3.UK
PUHZ-SW100YHAR4.UK
PUHZ-SW100YHA-BS.UK
PUHZ-SW100YHAR1-BS.UK
PUHZ-SW100YHAR3-BS.UK
PUHZ-SW100YHAR4-BS.UK
PUHZ-SW120YHA.UK
PUHZ-SW120YHAR1.UK
PUHZ-SW120YHAR3.UK
PUHZ-SW120YHAR4.UK
PUHZ-SW120YHA-BS.UK
PUHZ-SW120YHAR1-BS.UK
PUHZ-SW120YHAR3-BS.UK
PUHZ-SW120YHAR4-BS.UK
ANB42FNEMT
ANB33FNDMT
ANB42FNDMT
U-V
0.19
0.30
0.30
U-W
0.19
0.30
0.30
W-V
0.19
0.30
0.30
Compressor model
Winding
Resistance
(")
PUHZ-SW120VHA.UK
PUHZ-SW120VHAR3.UK
PUHZ-SW120VHAR4.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW120VHAR3-BS.UK
PUHZ-SW120VHAR4-BS.UK
OCH533D
13
6-3. NOISE CRITERION CURVES
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
PUHZ-SW75VHA(-BS).UK
PUHZ-SW75VHAR3(-BS).UK
PUHZ-SW75VHAR4(-BS).UK
MICROPHONE
1m
UNIT
1.5m
GROUND
MODE SPL(dB)
COOLING
48
HEATING
51
LINE
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
NC-20
125
250
500
1000
2000
4000
8000
BAND CENTER FREQUENCIES, Hz
MODE SPL(dB)
COOLING
50
HEATING
54
LINE
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
125
NC-20
250
500
1000
2000
4000
PUHZ-SW120VHA(-BS).UK
PUHZ-SW120VHAR3(-BS).UK
PUHZ-SW120VHAR4(-BS).UK
PUHZ-SW120YHA(-BS).UK
PUHZ-SW120YHAR1(-BS).UK
PUHZ-SW120YHAR3(-BS).UK
PUHZ-SW120YHAR4(-BS).UK
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
PUHZ-SW100VHA(-BS).UK
PUHZ-SW100VHAR3(-BS).UK
PUHZ-SW100VHAR4(-BS).UK
PUHZ-SW100YHA(-BS).UK
PUHZ-SW100YHAR1(-BS).UK
PUHZ-SW100YHAR3(-BS).UK
PUHZ-SW100YHAR4(-BS).UK
8000
14
LINE
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
125
NC-20
250
500
1000
2000
4000
BAND CENTER FREQUENCIES, Hz
BAND CENTER FREQUENCIES, Hz
OCH533D
MODE SPL(dB)
COOLING
51
HEATING
54
8000
over 100mm
over 10mm
Service space
Over10
Front piping hole
(Knockout)
Front trunking hole
(Knockout)
92
[92
40
65
45
Power supply wiring hole
(2-[27Knockout)
19
92
55
Right piping hole
(Knockout)
75
Piping Knockout Hole Details
Air Intake
500
Over
Handle for moving
1 Refrigerant GAS pipe connection (FLARE)[15.88(5/8 inch)
2 Refrigerant LIQUID pipe connection (FLARE)[9.52(3/8 inch)
*1...Indication of STOP VALVE connection location.
Example of Notes
over 500mm
over 10mm
FREE
2 SERVICE SPACE
Dimensions of space needed
for service access are
shown in the below diagram.
Over
40
[92
Over100
65
Right trunking hole
(Knockout)
45
92
[92
40
Side Air Intake
Handle for moving
Handle for moving
Rear Air Intake
Rear piping hole
(Knockout)
Power supply wiring hole
(2-[27Knockout)
Rear trunking hole
(Knockout)
FOUNDATION
<Foundation bolt height>
Handle for moving
Side Air Intake
4 PIPING-WIRING DIRECTIONS
Piping and wiring connections
can be made from 4 directions:
front, right, rear and below.
3 FOUNDATION BOLTS
Power supply wiring hole
(2-[27Knockout)
500
Please secure the unit firmly
with 4 foundation (M10) bolts.
(Bolts and washers must be
purchased locally.)
943
30
322
220
175
145
145
Earth terminal
950
145
Air Discharge
600
Installation Feet
Rear Air Intake
41
Drain hole
(5-[33)
71
2
1
Handle for moving
Service panel
Terminal Connections
Left···Power supply wiring
Right···Indoor/Outdoor wiring
2-12 o 36 oval holes
(Foundation Bolt M10)
57
175
2-U Shaped notched holes
(Foundation Bolt M10)
417
1 FREE SPACE (Around the unit)
55
27
330
30
23
The diagram below shows a
basic example.
Explanation of particular details is
given in the installation manuals etc.
73 63
23
63
23 27 92
73
30
55
27
VHAR4
VHA/R3
Rear piping cover
Front piping cover
Bottom piping hole
(Knockout)
71
Less than
73 63
23
473
219
81
40
54
53
19
370
28
*1 431
15
A
OCH533D
*1 447
A
670
673
7
OUTLINES AND DIMENSIONS
PUHZ-SW75VHA.UKPUHZ-SW75VHAR3.UK PUHZ-SW75VHAR4.UK
PUHZ-SW75VHA-BS.UKPUHZ-SW75VHAR3-BS.UK PUHZ-SW75VHAR4-BS.UK
Unit : mm
FREE
er
m
10m
er
Ov
Ov
mm
0
15
10
Service space
Over
500
Over
Front piping hole
(Knockout)
92
{ 92
65
Power supply wiring hole
(2-{27Knockout)
Front trunking hole 40
45
(Knockout)
19
92
75
Right piping hole
(Knockout)
Piping Knockout Hole Details
55
{92
Air intake
Handle for moving
*1 ···Indication of STOP VALVE connection location.
150
Over
500
40
65
45
Right trunking hole
(Knockout)
92
{92
40
Rear piping hole
(Knockout)
Rear trunking hole
(Knockout)
Side Air Intake
Handle for moving
Handle for moving
Power supply wiring hole
(2-{27Knockout)
FOUNDATION
Rear Air Intake
Piping and wiring connections
can be made from 4 directions:
front, right, rear and below.
Please secure the unit firmly
with 4 foundation (M10) bolts.
(Bolts and washers must be
purchased locally.)
<Foundation bolt height>
4 PIPING-WIRING DIRECTIONS
3 FOUNDATION BOLTS
Power supply wiring hole
(2-{27Knockout)
1····Refrigerant GAS pipe connection (FLARE){15.88(5/8 inch)
2····Refrigerant LIQUID pipe connection (FLARE){ 9.52(3/8 inch)
Example of Notes
e
Ov
mm
10m
m
00
0
r1
Ov
er
Over
Dimensions of space needed
for service access are
shown in the below diagram.
2 SERVICE SPACE
Side Air Intake
Handle for moving
1350
The diagram below shows a
basic example.
Explanation of particular details is
given in the installation manuals etc.
55
27
330
1 FREE SPACE (Around the unit)
73 63
23
73 63
23
63
23 27 92
73
Less than
30
55
27
635
371
30
322
220
175
145
145
145
Earth terminal
950
Air Discharge
Installation Feet
600
Rear Air Intake
42
Drain hole
(5-{33)
71
2
1
Handle for moving
Service panel
Terminal connection
Left···Power supply wiring
Right···Indoor/Outdoor wiring
2-12 x 36 Oval holes
(Foundation Bolt M10)
66
175
2-U Shaped notched holes
(Foundation Bolt M10)
417
Front piping cover
Rear piping cover
930
YHA
A
1,079
VHA
Bottom piping hole
(Knockout)
*1 431
30
23
219
PUHZ-SW100VHAR3.UKPUHZ-SW100VHAR4.UK
PUHZ-SW100VHAR3-BS.UKPUHZ-SW100VHAR4-BS.UK
PUHZ-SW100YHAR1.UKPUHZ-SW100YHAR3.UK
PUHZ-SW100YHAR1-BS.UKPUHZ-SW100YHAR3-BS.UK
PUHZ-SW120VHAR3.UKPUHZ-SW120VHAR4.UK
PUHZ-SW120VHAR3-BS.UKPUHZ-SW120VHAR4-BS.UK
PUHZ-SW120YHAR1.UKPUHZ-SW120YHAR3.UK
PUHZ-SW120YHAR1-BS.UKPUHZ-SW120YHAR3-BS.UK
81
(19)
45
56
370
53
28
71
16
A
OCH533D
*1 447
PUHZ-SW100VHA.UK
PUHZ-SW100VHA-BS.UK
PUHZ-SW100YHA.UK
PUHZ-SW100YHA-BS.UK
PUHZ-SW120VHA.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW120YHA.UK
PUHZ-SW120YHA-BS.UK
PUHZ-SW100YHAR4.UK
PUHZ-SW100YHAR4-BS.UK
UHZ-SW120YHAR4.UK
P
PUHZ-SW120YHAR4-BS.UK
Unit : mm
8
WIRING DIAGRAM
BH79B652H01
PUHZ−SW75VHA WIRING DIAGRAM
PUHZ-SW75VHA.UKPUHZ-SW75VHAR3.UK
PUHZ-SW75VHA-BS.UKPUHZ-SW75VHAR3-BS.UK
NAME
SYMBOL
Terminal Block <Power Supply, Indoor/Outdoor> P.B.
Motor for Compressor
R, S
Fan Motor
U, V, W
Solenoid Valve (Four-Way Valve)
IPM
High Pressure Switch
PFC
CB1, CB2, CB3
High Pressure Sensor
Thermistor <Liquid>
N.F.
LI, LO
Thermistor <Discharge>
NI, NO
Thermistor <2-Phase Pipe>
EI, E2, E3
Thermistor <Ambient>
52C
Thermistor <Heat Sink>
Thermistor <Comp. Surface>
C.B.
Linear Expansion Valve
SW1
Reactor
SW4
Capacitor
M
1 3
3 63L
63H (RED)
(YLW)
1 3 1
5
5
51
LEV-A LEV-B
C N VM N T C N M N T
(WHT) (RED)
(WHT) (WHT)
1
3
1
CNDC
(PNK)
1
1
F1
3
2
3
1
5
X52
F3
21S4 1
(GRN)
F4
4
3
1
3 CN52C
(RED)
3
1
X51
3
7
X54
CNAC
(WHT)
1 2
CN31
1
CN4
(WHT)
1 2
2
F2
CNS
(WHT)
CN2
1 (WHT)
TRAN S
14
CNM
(WHT)
1
*1
SW6
*1
1
SW7
M
t°
1
4 1 2 2 1 1 3 2 1
TH7/6 TH3 TH4 63HS TH34
(RED) (WHT)(WHT) (WHT) (RED)
C N F2
7 (WHT)
1
t°
SW9
t°
SW1
CNF1
7 (WHT)
MF1 1
MS
3~
t°
NAME
Switch <Function Switch, Model Select>
Switch <Model Select>
Switch <Function Switch>
Switch <Function Switch>
Switch <Function Switch>
Switch <Pump Down>
Connector <Emergency Operation>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
LED <Operation Inspection Indicators>
Fuse <T6.3AL250V>
Relay
CN51 CNDM CN3S
(WHT) (WHT) (WHT)
t°
SYMBOL
SW5
SW6
SW7
SW8
SW9
SWP
CN31
CNDM
CN51
SV1/CH
SS
CNM
LED1, LED2
F1, F2, F3, F4
X51, X52, X54
LEV-A LEV-B
TH34
SW5
C. B.
63HS
SW4 SWP SW8
TH7 TH6 TH3 TH4
NAME
Power Circuit Board
Connection Terminal <L/N-Phase>
Connection Terminal <U/V/W-Phase>
Power Module
Converter
Main Smoothing Capacitor
Noise Filter Circuit Board
Connection Terminal <L-Phase>
Connection Terminal <N-Phase>
Connection Terminal <Ground>
52C Relay
Controller Circuit Board
Switch <Manual Defrost, Defect History,
Record Reset, Refrigerant Address>
Switch <Test Operation>
LED1
63H
LED2
SYMBOL
TB1
MC
MF1
21S4
63H
63HS
TH3
TH4
TH6
TH7
TH8
TH34
LEV-A, LEV-B
ACL
CY1, CY2
3 SV1
1
/CH
3 SS
(WHT)
(GRY)
5
21S4
RED
RED
W HT
W HT
RED
W HT
AC L
V
MC
U
U
V
W
R
RED
S W HT
+
CB3
+
CN4 1
(WHT) 2
2
CN3 1
(WHT) 2
TH8
1
5
E3
2
1
3
t°
CN2
(WHT)
7
1
2
E2
+
CB2
CN5 1
(RED) 2
CN5
(RED)
IPM
1
MODEL
ON
75V OFF
SW5-6 *2
SW6
1 2 3 4 5 6 7 8
ON
OFF
LI
BRN
ORN
GRN/YLW
N
1 2 3 4 5 6
*2 SW5 -1 to 5 : Function Switch
OCH533D
L
BLU
The black square ( ) indicates a switch position.
RED
YLW
CNAC1
(WHT)
3
*1 MODEL SELECT
2
2
CNAC2
(RED)
PFC
CB1
1
CN52C
(BLK)
BLK
WHT
RED
P. B.
MS
3~
N. F.
NO
52C
W
LO
CY1
CY2
S1 S2 S3 TB1
INDOOR
UNIT
POWER SUPPLY
~/N 230V 50Hz
17
NI
EI
2
PUHZ-SW75VHAR4.UKPUHZ-SW75VHAR4-BS.UK
SYMBOL
NAME
C.B.
Controller Circuit Board
F1, F2, F3, F4 Fuse <T6.3AL250V>
Switch <Manual Defrost, Defect History Record Reset,
SW1
Refrigerant Address>
Switch <Function Switch>
SW4
Switch <Function Switch, Model Select>
SW5
Switch <Model Select>
SW6
Switch <Function Switch>
SW7
Switch <Function Switch>
SW8
Switch <Function Switch>
SW9
Switch <Pump Down>
SWP
Connector <Connection for Option>
CNDM
Connector <Connection for Option>
SV1/CH
Connector <Connection for Option>
SV3/SS
Connector <Connection for Option>
CNM
TH7 TH6
C. B.
t°
TH3
TH4
t°
t°
t°
TH34
63HS
63H
SELECT
*1 MODEL
The black square ( ) indicates a switch position.
MODEL
SW5-6 *2
SW6
ON
75V OFF
ON
OFF
1 2 3 4 5 6 7 8
LEV-A
LEV-B
M
M
t°
63H
(YE)
LED2
3
1
TRAN S
CN2
(RD)
1
3
CNDC
(PK)
LE V-A
(WH)
5 1
LE V-B
(RD)
LED1
3
CNDM
(WH)
7
3
1
2
X52
CNAC
(WH)
1
2
1
14
CNM
(WH)
*1
CN4
(WH)
1 2
F3
F1
CNS
(WH)
5
1
7
F2
3
1
SW1
1
2 1
T H34
(RD)
X51
7
CNF1
(WH)
1
1
3
63HS
(WH)
1 2 2 1
TH3 TH4
(WH) (WH)
SW5
4
SW4 SWP SW8
TH7/6
(RD)
X54
1
SW6
*1
MF1
MS
3~
1 2 3 4 5 6
*2 SW5 -1 to 5 : Function Switch
SW7
NAME
Terminal Block <Power Supply, Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (4-Way Valve)
High Pressure Switch
High Pressure Sensor
Thermistor <Liquid>
Thermistor <Discharge>
Thermistor <2-Phase Pipe>
Thermistor <Ambient>
Thermistor <Heat Sink>
Thermistor <Comp. Surface>
Linear Expansion Valve
Reactor
Capacitor
Power Circuit Board
SW9
SYMBOL
TB1
MC
MF1
21S4
63H
63HS
TH3
TH4
TH6
TH7
TH8
TH34
LEV-A, LEV-B
ACL
CY1, CY2
P.B.
F4
1
3
4
21S4
(GN)
1
3
SV1/CH
(GY)
1
3
SV3/SS
(WH)
21S4
TH8
2
P. B.
t°
1
IC710
3 CNAC1
(WH)
1
3
CNAC2
(RD)
BK
CY2
Q600
+
–
L
DB3
E4
~
~
TBL4
N
BN
7
CN2
(RD)
OG
BK
1
YE
E3
~
–
S1 S2 S3 TB1
BK
TBL2
POWER SUPPLY
~/N 230V 50Hz
AC L
OCH533D
CY1
EI
GNYE
~
– DB1
+
~
CNDC
(PK)
1
R/L1
7
Uo
3
S/N1
~
+
RD
1
2
CN6
(WH)
1
WH
MS V WH
3~ U
Vo
MC
+
Wo
W
DB2
CN4
(WH)
RD
BK
2
18
TO
INDOOR UNIT
PUHZ-SW100VHA.UKPUHZ-SW100VHAR3.UK
PUHZ−SW100/120VHA WIRING DIAGRAM
BH79B653H01
PUHZ-SW100VHA-BS.UKPUHZ-SW100VHAR3-BS.UK
PUHZ-SW120VHA.UKPUHZ-SW120VHAR3.UK
PUHZ-SW120VHA-BS.UKPUHZ-SW120VHAR3-BS.UK
MF2
MS
3~
1
CNF2
7 (WHT)
t°
1
5
5 1
LEV-A LEV-B
(WHT) (RED)
1 3 1
5
CNVMNT CNMNT
(WHT) (WHT)
CNM
(WHT)
1
1 3
63H
(YLW)
CN2
1 (WHT) 7
TRANS
1
CNDC
(PNK)
14
C N4
(WHT)
1 2
21S4 1
(GRN)
F4
4
3
1
X51
3
CN31
3
X54
F1
1
F3
CNAC
(WHT)
1
2
*1
7
X52
F2
*1
3 CN52C
(RED)
1
2
CNS
(WHT)
3
t°
1 3
63L
(RED)
3
2
t°
1
4 1 2 2 1 1 3 2 1
TH7/6 TH3 TH4 63HS TH34
(RED) (WHT)(WHT) (WHT) (RED)
3 S V1 1
3 SS
(WHT)
/CH
(GRY)
NAME
Switch <Function Switch>
Switch <Function Switch>
Switch <Function Switch>
Switch <Pump Down>
Connector <Emergency Operation>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
LED <Operation Inspection Indicators>
Fuse <T6.3AL250V>
Relay
SW7
CNF1
7 (WHT)
M
SW6
1
LEV-B
M
SW5
t° t°
MF1
MS
3~
LEV-A
SW4 SWP SW8
C. B.
TH34
SYMBOL
SW7
SW8
SW9
SWP
CN31
CNDM
CN51
SV1/CH
SS
CNM
LED1, LED2
F1, F2, F3, F4
X51, X52, X54
SW9
63HS
TH7 TH6 TH3 TH4
SW1
63L
LED1
63H
NAME
Power Circuit Board
Connection Terminal <U/V/W-Phase>
Connection Terminal <L-Phase>
Connection Terminal <N-Phase>
Connection Terminal
Connection Terminal
Connection Terminal <Reactor>
Power Module
Connection Terminal <Ground>
52C Relay
Controller Circuit Board
Switch <Manual Defrost, Defect History,
Record Reset, Refrigerant Address>
Switch <Test Operation>
Switch <Function Switch, Model Select>
Switch <Model Select>
CN51 CNDM CN3S
(WHT) (WHT) (WHT)
NAME
SYMBOL
Terminal Block <Power Supply, Indoor/Outdoor> P. B.
Motor for Compressor
U, V, W
Fan Motor
LI
Solenoid Valve (Four-Way Valve)
NI
High Pressure Switch
P2
Low Pressure Switch
N2
High Pressure Sensor
DCL1, DCL2
Thermistor <Liquid>
IGBT
Thermistor <Discharge>
EI, E2, E3, E4
Thermistor <2-Phase Pipe>
52C
C. B.
Thermistor <Ambient>
Thermistor (internal) <Heat Sink>
SW1
Thermistor <Comp. Surface>
Linear Expansion Valve
SW4
Reactor
SW5
Main Smoothing Capacitor
SW6
Capacitor
LED2
SYMBOL
TB1
MC
MF1, MF2
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
TH34
LEV-A, LEV-B
DCL
CB
CY1, CY2
1
3
1
3
1
5
21S4
2
7
1 2
C N4
(WHT)
1
3
7
C N2
(WHT)
P. B.
CN52C
3 (RED)
1
52C
52C
B LK
CNDC
(PNK) 3
+
+
RED
1
(RED)
CNAC2
N2
P2
-
1
IGBT
3
~
E2
WHT
CB
E3
2
1
TH8
DCL2
BLK
WHT
RED
W V U
W
+
3
~
E4
EI
DCL1
B LK
DCL
V
U
MS
3~
(WHT)
CNAC1
t°
NI
LI
B LK
L
*1 MODEL SELECT
N
BRN
CY1
CY2
ORN
GRN/YLW
YLW
BLU
RED
MC
S1 S2 S3 TB1
The black square ( ) indicates a switch position.
MODEL
SW5-6 *2
SW6
ON
100V OFF
1 2 3 4 5 6 7 8
ON
120V OFF
1 2 3 4 5 6 7 8
ON
OFF
ON
OFF
1 2 3 4 5 6
INDOOR
UNIT
POWER SUPPLY
~/N 230V 50Hz
1 2 3 4 5 6
*2 SW5 -1 to 5 : Function Switch
OCH533D
19
B LK
RED
W HT
PUHZ-SW100VHAR4.UKPUHZ-SW120VHAR4.UK
PUHZ-SW100VHAR4-BS.UKPUHZ-SW120VHAR4-BS.UK
TH7 TH6 TH3 TH4 63HS TH34
1 3
63L
(RD)
1
3
63H
(YE)
1
2
3
CNDC
(PK)
TRANS
CN2
1 (RD)
CNS
(WH)
3
*1
1
CN4
(WH)
1 2
14
CNM
(WH)
CN52C
(RD)
1 3
CNDM 1
(WH)
3
7
2
F2
F1
1
F3
CNAC
(WH)
1
2
3
7
1
F4
4
3 21S4 1
(GN)
3 SV1/CH 1
(GY)
3 SV3/SS
(WH)
21S4
2
1
CN4
(WH)
7
2
3
1 CN2
(RD)
1
7
P. B.
CN52C
3 (RD)
BK
2
E3
1
CNAC2
(RD)
CNDC
(PK)
3
TH8
+
DCL2
W V U
W
V
U
MS
3~
BK
DCL
1
IGBT
3
~
E2
1
3
~
E4
EI
DCL1
WH
CNAC1
(WH)
t°
BK
NI
LI
BK
MC
N
POWER SUPPLY
~/N 230V 50Hz
20
BN
OG
GNYE
YE
RD
L
BU
CY1
CY2
OCH533D
1 2 3 4 5 6 7 8
*2 SW5 -1 to 5 : Function Switch
*1
4 1 2 2 1 1 3 2 1 1
5
5 1
TH3 TH4 63HS TH34 LEV-A
LEV-B
(WH) (WH) (WH) (RD)
(WH)
(RD)
CNF2
7 (WH)
1 2 3 4 5 6 7 8
SW7
TH7/6
(RD)
120V
ON
OFF
SW9
1
1
X51
MS
3~
CNF1
7 (WH)
M
100V
t°
X54
MF2
1
t°
LED1
MS
3~
t°
LEV-B
M
X52
MF1
t° t°
LED2
C. B.
LEV-A
SW6
ON
OFF
SW6
63L
MODEL
SW1
SW4
*1 MODEL SELECT
The black square ( ) indicates a switch position.
SW5
SW1
NAME
SYMBOL
NAME
Thermistor <Ambient>
Switch <Function Switch, Model Select>
SW5
Thermistor internal <Heat Sink>
Switch <Model Select>
SW6
Thermistor <Comp. Surface>
Switch <Function Switch>
SW7
Linear Expansion Valve
Switch <Function Switch>
SW8
Reactor
Switch <Function Switch>
SW9
Capacitor
Switch <Pump Down>
SWP
Connector <Connection for Option>
Power Circuit Board
CNDM
SV1/CH Connector <Connection for Option>
Controller Circuit Board
SV3/SS Connector <Connection for Option>
Switch <Manual Defrost, Defect History
Connector <Connection for Option>
CNM
Record Reset, Refrigerant Address>
F1, F2, F3, F4 Fuse <T6.3AL250V>
Switch <Function Switch>
SW4 SWP SW8
SYMBOL
TH7
TH8
TH34
LEV-A, LEV-B
DCL
CY1, CY2
P. B.
C. B.
63H
BK
WH
RD
MC
MF1, MF2
21S4
63H
63L
63HS
TH3
TH4
TH6
NAME
Terminal Block <Power
Supply, Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (4-Way Valve)
High Pressure Switch
Low Pressure Switch
High Pressure Sensor
Thermistor <Liquid>
Thermistor <Discharge>
Thermistor <2-Phase Pipe>
+
SYMBOL
TB1
S1 S2 S3 TB1
TO
INDOOR
UNIT
BK
3
SW5-6 *2
ON
OFF
ON
OFF
1 2 3 4 5 6
1 2 3 4 5 6
BH79B654H01
PUHZ-SW100/120YHA WIRING DIAGRAM
PUHZ-SW100YHA.UKPUHZ-SW120YHA.UK
PUHZ-SW100YHA-BS.UKPUHZ-SW120YHA-BS.UK
CNF2
7 (WHT)
LEV-B
(RED)
5
1
14
CNM
(WHT)
CN4
(WHT)
1 2
F2
F1
1
3
CN31
7
F3
CNAC
(WHT)
1
2
*1
3 CN52C
(RED)
1
2
CNS
(WHT)
*1
1 3 1
5
CNVMNT CNMNT
(WHT) (WHT)
3
3 SV1
/CH
(GRY)
21S4 1
(GRN)
F4
4
1
1
SW7
5 1
SW6
LEV-A
(WHT)
CN2
1 (WHT) 7
TRANS
1
CNDC
(PNK)
3
3
63L
(RED)
1
3
63H
(YLW)
3
2
1
1
SW9
t°
SW1
t°
1
3
1
3
1
*1 MODEL SELECT
CN51
(WHT)
t°
4 1 2 2 1 1 3 2 1
TH7/6 TH3 TH4 63HS TH34
(RED) (WHT) (WHT) (WHT) (RED)
NAME
Controller Circuit Board
Switch <Manual Defrost, Defect History,
SW1
Record Reset, Refrigerant Address>
Switch <Test Operation>
SW4
Switch <Function Switch, Model Select>
SW5
Switch <Model Select>
SW6
Switch <Function Switch>
SW7
Switch <Function Switch>
SW8
Switch <Function Switch>
SW9
Switch <Pump Down>
SWP
Connector <Emergency Operation>
CN31
Connector <Connection for Option>
CNDM
Connector <Connection for Option>
CN51
Connector <Connection for Option>
SV1/CH
Connector <Connection for Option>
SS
Connector <Connection for Option>
CNM
LED1, LED2 LED <Operation Inspection Indicators>
F1, F2, F3, F4 FUSE <T6.3AL250V>
X51, X52, X54 Relay
X51
1
1
M
X54
MF2
MS
3~
t° t°
CNF1
7(WHT)
LEV-B
M
X52
1
LEV-A
TH34
SW5
C. B.
MF1
MS
3~
63HS
TH7 TH6 TH3 TH4
SYMBOL
C. B.
CNDM CN3S
(WHT) (WHT)
63L
NAME
Power Circuit Board
Connection Terminal <U/V/W-Phase>
Connection Terminal <L1/L2/L3-Power Supply>
Connection Terminal
52C Relay
Noise Filter Circuit Board
Connection Terminal <L1/L2/L3/N-Power Supply>
Connection Terminal <L1/L2/L3/N-Power Supply>
Connection Terminal <Ground>
Converter Circuit Board
Connection Terminal <L1-Power Supply>
Connection Terminal <L1-Power Supply>
Connection Terminal <L2-Power Supply>
Connection Terminal <L3-Power Supply>
Connection Terminal
Connection Terminal
SW4 SWP SW8
63H
SYMBOL
P. B.
TB-U/V/W
TB-L1/L2/L3
TB-N
X52CA
N. F.
LI1/LI2/LI3/NI
LO1/LO2/LO3/NO
GD1, GD3
CONV. B.
L1-A1/IN
L1-A2/OU
L2-A2/OU
L3-A2/OU
N-IN
CK-OU
LED1
NAME
Terminal Block <Power Supply>
Terminal Block <Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (Four-Way Valve)
High Pressure Switch
Low Pressure Switch
High Pressure Sensor
Thermistor <Liquid>
Thermistor <Discharge>
Thermistor <2-Phase Pipe>
Thermistor <Ambient>
Thermistor <Heat Sink>
Thermistor <Comp. Surface>
Linear Expansion Valve
Reactor
Capacitor
Capacitor
Rush Current Protect Resistor
LED2
SYMBOL
TB1
TB2
MC
MF1, MF2
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
TH34
LEV-A, LEV-B
ACL1, ACL2, ACL3, ACL4
CY1, CY2
CK
RS
The black square ( ) indicates a switch position.
5
3 SS
(WHT)
MODEL
SW6
ON
100Y OFF
21S4
ON
120Y OFF
3
P. B.
TH8
7
2
2
*2
t°
SW5-6 *2
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
TB-L1
TB-L2
TB-L3
RED
RED
RED
RS
TB1
POWER
SUPPLY
3N~
400V 50Hz
CNAC2
3 (RED)
L1
RED
L2
WHT
LI2
LO2
WHT
BLK
LI3
LO3
BLK
BLU
NI
NO
BLU
GRN/YLW
N
LO1
RED
-
OCH533D
21
3
1 CNL
(BLU)
BRN
2
3
BRN
CNDC 1
(PNK)
GD3
BLK
BLK
GD1
RED
L1-A2
WHT
RED
L1-OU
L2-A2
WHT
+
+
BLK CK-OU
N-IN
L1-IN
ACL1
LI1
L3
L2-OU
BLK
L1-A1
21
BLU
CNCT
(RED) 1
3
RED
2
1
CONV. B.
1
N. F.
CNAC1
(WHT)
L3-A2
BLK
L3-OU
3
CN7
(WHT)
YLW
3
MC
RED
S3
ORN
INDOOR
UNIT
S2
V W
U MS
3~
BRN
S1
CK
BLK
CY1
CY2
RED TB-U
WHT TB-V
BLK TB-W
X52CA
TB-N
TB2
ACL4
ON
OFF
1 2 3 4 5 6
1 2 3 4 5 6
SW5 -1 to 5 : Function Switch
7 1 2
1 3 1 21 2 1
CN2
CN4
CN7 CN6 CN5
(WHT) (WHT) (RED) (WHT) (WHT)
BLK
WHT
ON
OFF
ACL2
ACL3
PUHZ-SW100/120YHA WIRING DIAGRAM
PUHZ-SW100YHAR1.UKPUHZ-SW100YHAR3.UK
PUHZ-SW100YHAR1-BS.UKPUHZ-SW100YHAR3-BS.UK
PUHZ-SW120YHAR1.UKPUHZ-SW120YHAR3.UK
PUHZ-SW120YHAR1-BS.UKPUHZ-SW120YHAR3-BS.UK
1
14
CNM
(WHT)
CN4
(WHT)
1 2
4
1
3 SV1
1
/CH
3 SS
(WHT)
(GRY)
SW7
*1 MODEL SELECT
The black square ( ) indicates a switch position.
5
MODEL
SW6
ON
100Y OFF
21S4
ON
120Y OFF
3
P. B.
TH8
2
7
2
*2
t°
WHT
RED
X52CA
TB-U
TB-V
TB-W
L3IN
TB-L2
1 3 1 21 2 1
7 1 2
CN2
CN7 CN6 CN5
CN4
(WHT) (WHT) (RED) (WHT) (WHT)
L3OUT TB-L3
BLK
X52CB
RED
RS
TB-L1
RED
L1
L2
21
CNAC2
3 (RED)
LI1
LO1
RED
WHT
LI2
LO2
WHT
LO3
BLK
NO
BLU
L3
BLK
N
BLU
NI
+
+
-
OCH533D
3
22
1 CNL
(BLU)
BRN
2
3
BRN
CNDC 1
(PNK)
GD3
BLK
BLK
GD1
RED
WHT
RED
L2-A2
L2-OU
L1-IN
ACL1
RED
LI3
RED
RED
CNCT
(RED) 1
3
GRN/YLW
POWER
SUPPLY
3N~
400V 50Hz
WHT
CN7
(WHT)
2
TB1
CONV. B.
1
N. F.
1
BLK
L3-OU
BLK
3
MC
CNAC1
(WHT)
L3-A2
BLK
RED
WHT
BLK
YLW
3
CK
L1-A1
S3
ORN
INDOOR
UNIT
S2
1 2 3 4 5 6 7 8
ACL4
ON
OFF
ON
OFF
1 2 3 4 5 6
1 2 3 4 5 6
SW5 -1 to 5 : Function Switch
TB-N
V W
U MS
3~
BRN
S1
1 2 3 4 5 6 7 8
BLK
CY1
CY2
TB2
SW5-6 *2
L1-A2
3
3
3
1
L1-OU
1
21S4 1
(GRN)
F4
3
1
N-IN
F1
1
CN51
(WHT)
CNS
(WHT)
CN31
7
F3
CNAC
(WHT)
1
2
*1
3 CN52C
(RED)
1
2
F2
*1
1 3 1
5
CNVMNT CNMNT
(WHT) (WHT)
SW9
5
SW6
LEV-B
(RED)
CN2
1 (WHT) 7
TRANS
1
CNDC
(PNK)
5 1
BLK CK-OU
1
3
63H
(YLW)
3
3
3
63L
(RED)
LEV-A
(WHT)
BLU
1
1
NAME
Controller Circuit Board
Switch
<Manual
Defrost, Defect History,
SW1
Record Reset, Refrigerant Address>
Switch <Test Operation>
SW4
Switch <Function Switch, Model Select>
SW5
Switch <Model Select>
SW6
Switch <Function Switch>
SW7
Switch <Function Switch>
SW8
Switch <Function Switch>
SW9
Switch <Pump Down>
SWP
Connector <Emergency Operation>
CN31
Connector <Connection for Option>
CNDM
Connector <Connection for Option>
CN51
Connector <Connection for Option>
SV1/CH
Connector <Connection for Option>
SS
Connector <Connection for Option>
CNM
LED1, LED2 LED <Operation Inspection Indicators>
F1, F2, F3, F4 FUSE <T6.3AL250V>
X51, X52, X54 Relay
SW1
4 1 2 2 1 1 3 2 1
TH7/6 TH3 TH4 63HS TH34
(RED) (WHT) (WHT) (WHT) (RED)
CNF2
7 (WHT)
2
M
t°
X51
1
1
t°
X54
MF2
MS
3~
CNF1
7(WHT)
t°
LEV-B
M
X52
1
t° t°
LEV-A
TH34
SW5
C. B.
MF1
MS
3~
63HS
TH7 TH6 TH3 TH4
SYMBOL
C. B.
CNDM CN3S
(WHT) (WHT)
63L
NAME
Power Circuit Board
Connection Terminal <U/V/W-Phase>
Connection Terminal <L1/L2/L3-Power Supply>
Connection Terminal
52C Relay
Noise Filter Circuit Board
Connection Terminal <L1/L2/L3/N-Power Supply>
Connection Terminal <L1/L2/L3/N-Power Supply>
Connection Terminal <Ground>
Converter Circuit Board
Connection Terminal <L1-Power Supply>
Connection Terminal <L1-Power Supply>
Connection Terminal <L2-Power Supply>
Connection Terminal <L3-Power Supply>
Connection Terminal
Connection Terminal
SW4 SWP SW8
63H
SYMBOL
P. B.
TB-U/V/W
TB-L1/L2/L3
TB-N
X52CA/B
N. F.
LI1/LI2/LI3/NI
LO1/LO2/LO3/NO
GD1, GD3
CONV. B.
L1-A1/IN
L1-A2/OU
L2-A2/OU
L3-A2/OU
N-IN
CK-OU
LED1
NAME
Terminal Block <Power Supply>
Terminal Block <Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (Four-Way Valve)
High Pressure Switch
Low Pressure Switch
High Pressure Sensor
Thermistor <Liquid>
Thermistor <Discharge>
Thermistor <2-Phase Pipe>
Thermistor <Ambient>
Thermistor <Heat Sink>
Thermistor <Comp. Surface>
Linear Expansion Valve
Reactor
Capacitor
Capacitor
Rush Current Protect Resistor
LED2
SYMBOL
TB1
TB2
MC
MF1, MF2
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
TH34
LEV-A, LEV-B
ACL1, ACL2, ACL3, ACL4
CY1, CY2
CK
RS
ACL2
ACL3
PUHZ-SW100YHAR4.UKPUHZ-SW120YHAR4.UK
PUHZ-SW100YHAR4-BS.UKPUHZ-SW120YHAR4-BS.UK
1
TH7/6
(RD)
1 3
63L
(RD)
3
63H
(YE)
1
3
CNDC
(PK)
TRANS
1
F1
F3
CNAC
(WH)
1
2
3
1 2 3 4 5 6
t°
*1
*1
1
14
CNM
(WH)
CN4
(WH)
1 2
CNDM 1
(WH)
7
3
7
1
F4
4
3 21S4 1
(GN)
3 SV1/CH 1
(GY)
3 SV3/SS
(WH)
21S4
TH8
3
P. B.
t°
2
7
2
TB-L2
WH
X52CA RD
RD
~
~
~
L3IN
1 3 1 2 1 2 1 CN2 7 1 2
CN7 CN6 CN5
CN4
(RD)
(WH) (WH) (RD)
(WH)
L3OUT
TB-L3
BK
X52CB
TB-L1
+
RD
CK-OU
BK
BU
CNAC2
3 (RD)
ACL1
L1
RD
LI1
L2
WH
LI2
LO2 WH
ACL2
ACL3
LO1 RD
LO3 BK
N
BU
NI
NO
+
GD3
BK
BK
CNDC 1
(PK)
23
2
3
3
+
~
LI3
-
~
BK
GNYE
L3
GD1
OCH533D
21
RD
CNCT
(RD) 1
3
RD
CNAC1
(WH) 1
POWER
SUPPLY
3N~
400V 50Hz
L1-A2
RD
N-IN
N. F.
TB1
L1-OU
L2-A2
CONV. B.
1
2
WH
WH
3
MC
L2-OU
BK
L3-A2
BK
L3-OU
3
CN7
(WH)
BK
YE
CK
L1-IN
S3
+
L1-A1
S2
+
U V W
MS
3~
OG
TO
INDOOR
UNIT
RD
BN
S1
RS
TB-N
RD TB-U
WH TB-V
BK TB-W
CY1
CY2
TB2
BK
BU
1 CNL
(BU)
ACL4
1 2 3 4 5 6 7 8
SW5-6 *2
ON
OFF
*2 SW5 -1 to 5 : Function Switch
2
F2
CNS
(WH) 3
CN2
1 (RD)
120Y
SW5-6 *2
ON
OFF
SW6
ON
OFF
1 2 3 4 5 6 7 8
100Y
4 1 2 2 1 1 3 2 1 1
5
5 1
LEV-B
TH3 TH4 63HS TH34 LEV-A
(WH)
(RD)
(WH) (WH) (WH) (RD)
1
MODEL
SW7
1
CNF2
7 (WH)
2
M
ON
OFF
SW9
CNF1
7 (WH)
t°
X51
MS
3~
1
t°
X54
MF2
t° t°
X52
MS
3~
LEV-B
M
SW6
MODEL
SW6
C. B.
MF1
LEV-A
TH7 TH6 TH3 TH4 63HS TH34
*1 MODEL SELECT
The black square ( ) indicates a switch position.
SW1
63L
NAME
Switch <Function Switch>
Switch <Function Switch, Model Select>
Switch <Model Select>
Switch <Function Switch>
Switch <Function Switch>
Switch <Function Switch>
Switch <Pump Down>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Fuse <T6.3AL250V>
SW5
SW1
NAME
SYMBOL
Thermistor <Comp. Surface>
SW4
Linear Expansion Valve
SW5
SW6
Reactor
SW7
Capacitor
SW8
Capacitor
SW9
Rush Current Protect Resistor
SWP
Power Circuit Board
CNDM
Noise Filter Circuit Board
SV1/CH
SV3/SS
Converter Circuit Board
CNM
Controller Circuit Board
F1, F2, F3, F4
Switch <Manual Defrost, Defect History
Record Reset, Refrigerant Address>
SW4 SWP SW8
63H
SYMBOL
TH34
LEV-A, LEV-B
ACL1, ACL2,
ACL3, ACL4
CY1, CY2
CK
RS
P. B.
N. F.
CONV. B.
C. B.
LED1
NAME
Terminal Block <Power Supply>
Terminal Block <Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (4-Way Valve)
High Pressure Switch
Low Pressure Switch
High Pressure Sensor
Thermistor <Liquid>
Thermistor <Discharge>
Thermistor <2-Phase Pipe>
Thermistor <Ambient>
Thermistor <Heat Sink>
LED2
SYMBOL
TB1
TB2
MC
MF1, MF2
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
1 2 3 4 5 6
9
WIRING SPECIFICATIONS
FIELD ELECTRICAL WIRING (power wiring specifications)
Outdoor unit model
Outdoor unit power supply
*1
Wiring
Wire No. ×
size (mm2)
Outdoor unit input capacity Main switch (Breaker)
Outdoor unit power supply
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
Outdoor unit L-N (single)
Outdoor unit L1-N, L2-N, L3-N (3 phase)
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
Circuit rating
*2
*2
*3
SW75V
SW100V
SW120V
SW100, 120Y
~/N (single),
50 Hz, 230 V
25 A
3 × Min. 2.5
3 × 1.5 (Polar)
1 × Min. 1.5
2 × 0.3 (Non-polar)
~/N (single),
50 Hz, 230 V
32 A
3 × Min. 4
3 × 1.5 (Polar)
1 × Min. 1.5
2 × 0.3 (Non-polar)
~/N (single),
50 Hz, 230 V
40 A
3 × Min. 6
3 × 1.5 (Polar)
1 × Min. 1.5
2 × 0.3 (Non-polar)
3N~ (3 ph 4-wires),
50 Hz, 400 V
16 A
5 × Min. 1.5
3 × 1.5 (Polar)
1 × Min. 1.5
2 × 0.3 (Non-polar)
*4
230 V AC
230 V AC
230 V AC
230 V AC
*4
*4
*4
230 V AC
24 V DC
12 V DC
230 V AC
24 V DC
12 V DC
230 V AC
24 V DC
12 V DC
230 V AC
24 V DC
12 V DC
*1.A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
Make sure that the current leakage breaker is one compatible with higher harmonics.
Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter.
The use of an inadequate breaker can cause the incorrect operation of inverter.
*2.Maximum 45 m
If 2.5 mm2 is used, maximum 50 m.
If 2.5 mm2 is used and S3 is separated, maximum 80 m.
*3.The 10 m wire is attached in the remote controller accessory.
*4.The figures are NOT always against the ground.
S3 terminal has 24 V DC against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national codes.
2. Power supply cables and the cables between Interface unit/Flow temp. controller and outdoor unit shall not be lighter than polychloroprene
sheathed flexible cables. (Design 60245 IEC 57)
3. Be sure to connect the cables between Interface unit/Flow temp. controller and outdoor unit directly to the units (no intermediate connections
are allowed).
Intermediate connections may result in communication errors. If water enters at the intermediate connection point, it may cause insufficient
insulation to ground or a poor electrical contact .
(If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)
4. Install an earth longer than other cables.
5. Do not construct a system with a power supply that is turned ON and OFF frequently.
Power
supply
Isolator
Outdoor Unit
3 poles isolator
S1
S1
S2
S2
S3
S3
Indoor unit
(Interface unit /
Flow temp.
controller)
Warning:
· In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation
between power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3
terminals when the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in smoke emission, a fire or communication failure.
OCH533D
24
10
REFRIGERANT SYSTEM DIAGRAM
PUHZ-SW75VHA.UKPUHZ-SW75VHAR3.UK PUHZ-SW75VHAR4.UK
PUHZ-SW75VHA-BS.UKPUHZ-SW75VHAR3-BS.UK PUHZ-SW75VHAR4-BS.UK
Thermistor TH7
(Ambient)
Heat
exchanger
Thermistor TH6
(2-phase pipe)
Pressure
sensor 63HS
Stop valve
(with service port)
Refrigerant GAS pipe
connection [15.88(5/8)
4-way valve
Strainer
#50
Charge plug
(High pressure)
Charge plug
(Low pressure)
unit: mm (in)
Thermistor TH3
(Liquid)
High pressure
switch 63H
Distributor
Thermistor TH4
(Discharge)
Strainer
#100
Linear
expansion valve B
Stop valve
(with service port)
Refrigerant LIQUID pipe
connection [9.52(3/8)
Thermistor TH34
(Comp. surface)
Strainer
#100
Power
receiver
P.B
TH8
Compressor
Linear expansion valve A
Strainer
#100
PUHZ-SW100VHA.UK
PUHZ-SW100VHA-BS.UK
PUHZ-SW100YHA.UK
PUHZ-SW100YHA-BS.UK
PUHZ-SW120VHA.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW120YHA.UK
PUHZ-SW120YHA-BS.UK
Strainer
#100
PUHZ-SW100VHAR3.UKPUHZ-SW100VHAR4.UK
PUHZ-SW100VHAR3-BS.UKPUHZ-SW100VHAR4-BS.UK
PUHZ-SW100YHAR1.UKPUHZ-SW100YHAR3.UK
PUHZ-SW100YHAR1-BS.UKPUHZ-SW100YHAR3-BS.UK
PUHZ-SW120VHAR3.UKPUHZ-SW120VHAR4.UK
PUHZ-SW120VHAR3-BS.UKPUHZ-SW120VHAR4-BS.UK
PUHZ-SW120YHAR1.UKPUHZ-SW120YHAR3.UK
PUHZ-SW120YHAR1-BS.UKPUHZ-SW120YHAR3-BS.UK
PUHZ-SW100YHAR4.UK
PUHZ-SW100YHAR4-BS.UK
UHZ-SW120YHAR4.UK
P
PUHZ-SW120YHAR4-BS.UK
Thermistor TH7
(Ambient)
Thermistor TH6
Heat
(2-phase pipe)
exchanger
Pressure
sensor 63HS
Ball valve
Refrigerant GAS pipe
connection ø15.88(5/8)
Strainer
#50
4-way valve
Distributor
Charge plug
(High pressure)
Charge plug
(Low pressure)
Strainer
#100
Low pressure
switch 63L
Thermistor TH3
(Liquid)
High pressure
switch 63H
Thermistor TH4
(Discharge)
Strainer
#100
Linear
expansion valve B
Stop valve
(with service port)
Refrigerant LIQUID pipe
connection ø9.52(3/8)
Symbol
COMP
H/P SW
L/P SW
REV/V
Charge plug
P-Sensor
LEV-A
LEV-B
TH3
TH4
TH6
TH7
TH34
Power Receiver
OCH533D
Thermistor TH34
(Comp. surface)
Power
receiver
Strainer
#100
Compressor
P.B
TH8
Linear expansion valve A
Refrigerant flow in cooling
Strainer
#100
Strainer
#100
Detail
Part name
Compressor
High pressure switch (63H)
Low pressure switch (63L)
Reversing (4-way) valve (21S4)
Charge plug
Pressure sensor (63HS)
Linear expansion valve -A
Linear expansion valve -B
Liquid temperature thermistor
Discharge temperature thermistor
2-phase pipe temperature thermistor
Ambient temperature thermistor
Comp.surface temperature thermistor
Power Receiver
DC inverter twin rotary compressor (Mitsubishi Electric Corporation)
For protection (OFF:4.15MPa)
For protection (OFF:-0.03MPa) (SW100/120)
Change the refrigerant circuit (Heating / Cooling) and for Defrosting
High pressure / Low pressure / For production test use
For calculation of the condensing temperature from high pressure
Heating:Secondary LEV Cooling:Primary LEV
Heating:Primary LEV
Cooling:Secondary LEV
Heating:Evaporating temperature Cooling:Sub cool liquid temperature
For LEV control and for compressor protection
Outdoor 2-phase pipe temperature
For fan control and for compressor frequency control
For compressor protection
For accumulation of refrigerant
25
Refrigerant flow in heating
10-1. Refrigerant collecting (pump down)
When relocating or disposing of the indoor/outdoor unit, pump down the system following the procedure below so that no refrigerant is released into the atmosphere.
1 Turn off the power supply (circuit breaker).
2 Connect the low-pressure valve on the gauge manifold to the charge plug (lowpressure side) on the outdoor unit.
3 Close the liquid stop valve completely.
4 Supply power (circuit breaker).
• Even if power can be supplied, the pump down procedure cannot be completed depending on the unit's status. For more
information, refer to the FTC Installation Manual or Service Manual.
• Startup of the indoor-outdoor communication takes about 3 minutes after the power (circuit breaker) is turned on. Start the
pump-down operation 3 to 4 minutes after the power (circuit breaker) is turned on.
5 Perform the refrigerant collecting operation (cooling test run).
• Push the pump-down SWP switch (push-button type) on the control board of the outdoor unit. The compressor and ventilators
(indoor and outdoor units) start operating (refrigerant collecting operation begins). (LED1 and LED2 on the control board of
the outdoor unit are lit.)
• Only push the pump-down SWP switch if the unit is stopped. However, even if the unit is stopped and the pump-down SWP
switch is pushed less than 3 minutes after the compressor stops, the refrigerant collecting operation cannot be performed.
Wait until the compressor has been stopped for 3 minutes and then push the pump-down SWP switch again.
6 Fully close the ball valve on the gas pipe side of the outdoor unit when the pressure gauge on the gauge manifold shows 0.05
to 0 MPa [Gauge] (approx. 0.5 to 0 kgf/cm²) and quickly stop the air conditioner.
• Since the unit automatically stops in about 3 minutes when the refrigerant collecting operation is completed (LED1 off, LED2
lit), be sure to quickly close the gas ball valve. However, if LED1 is lit, LED2 is off, and the unit is stopped, open the liquid
stop valve completely, close the valve completely after 3 minutes or more have passed, and then repeat step 5. (Open the
gas ball valve completely.)
• If the refrigerant collecting operation has been completed normally (LED1 off, LED2 lit), the unit will remain stopped until the
power supply is turned off.
• Note that when the extension piping is very long with a large refrigerant amount, it may not be possible to perform a pumpdown operation. In this case, use refrigerant recovery equipment to collect all of the refrigerant in the system.
7 Turn off the power supply (circuit breaker), remove the gauge manifold, and then disconnect the refrigerant pipes.
Warning:
When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
• If the refrigerant pipes are disconnected while the compressor is operating and the stop valve (ball valve) is open, the
pressure in the refrigeration cycle could become extremely high if air is drawn in, causing the pipes to burst, personal
injury, etc.
10-2. Unit replacement operation
When reusing the existing pipes that carried R22 refrigerant for the SW75/100/120 models, replacement operation
must be performed before performing a test run.
1 If new pipes are used, these procedures are not necessary.
2 If existing pipes that carried R22 refrigerant are used for the SW75/100/120 models, these procedures are not necessary.
(The replacement operation cannot be performed.)
3 During replacement operation, “C5” is displayed on “A-Control Service Tool (PAC-SK52ST)”. (This is applied to only
SW75/100/120 models.)
OCH533D
26
11
TROUBLESHOOTING
11-1. TROUBLESHOOTING
<Check code displayed by self-diagnosis and actions to be taken for service (summary)>
Present and past check codes are logged, and they can be displayed on the control board of outdoor unit. Actions to be taken
for service, which depends on whether or not the trouble is reoccurring in the field, are summarized in the table below. Check
the contents below before investigating details.
Unit conditions at service
Check code
Actions to be taken for service (summary)
Displayed
Judge what is wrong and take a corrective action according to
“11-2. SELF-DIAGNOSIS ACTION TABLE”.
The trouble is reoccurring.
Not displayed
1 Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise, etc. Recheck the symptom, and check the installation environment,
refrigerant amount, weather when the trouble occurred,
matters related to wiring, etc.
2 Reset check code logs and restart the unit after finishing
service.
3 There is no abnormality in electrical component, controller
board, etc.
Logged
The trouble is not reoccurring.
1 Re-check the abnormal symptom.
2 Conduct troubleshooting and ascertain the cause of the
trouble.
3 Continue to operate unit for the time being if the cause is
not ascertained.
4 There is no abnormality concerning of parts such as
electrical component, controller board, etc.
Not logged
OCH533D
Conduct troubleshooting and ascertain the cause of the
trouble.
27
11-2. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is turned on>
Check code Abnormal point and detection method
—
None
F3
Note: Refer to indoor unit section for code P and code E.
Judgment and action
Case
1No voltage is supplied to terminal 1Check following items.
a) Power supply breaker
block (TB1) of outdoor unit.
b) Connection of power supply terminal block
a) Power supply breaker is
(TB1)
turned off.
c) Connection of power supply terminal block
b) Contact failure or
(TB1)
disconnection of power
supply terminal
2Check following items.
a) Connection of power supply terminal block
c) Open phase (L or N phase)
(TB1)
2Electric power is not charged
b) Connection of terminal on outdoor power
to power supply terminal of
circuit board
outdoor power circuit board.
SW75V: Check connection of the conneca) Contact failure of power
tor R or S. Refer to "11-6. TEST
supply terminal
POINT DIAGRAM".
b) Open phase on the outdoor
power circuit board
SW100/120V: Check connection of the
SW75V: Disconnection of
connector LI or NI.
connector R or S
Refer to "11-6. TEST POINT
SW100/120V:
DIAGRAM".
Disconnection of connector 3 Check connection of the connector (CNDC)
on the outdoor controller circuit board.
LI or NI
Check connection of the connector, CNDC
on the outdoor power circuit board(V)/the
3Electric power is not supplied
noise filter(Y). Refer to "11-6. TEST POINT
to outdoor controller circuit
DIAGRAM".
board.
a) Disconnection of connector 4 Check connection of reactor. (DCL or ACL)
(CNDC)
SW75VHA(R3) : Check connection of “LO” and
“NO” on the outdoor noise filter
circuit board. Check connection
4Disconnection of reactor (DCL
or ACL)
of "R" and "S" on the outdoor
power circuit board. Refer to
"11-6. TEST POINT DIAGRAM".
SW75VHAR4:Check connection of "TBL2" and
"TBL4" on the outdoor power circuit board. "11-6. TEST POINT
DIAGRAM".
SW100/120V: Check connection of "DCL1"
5Disconnection of outdoor noise
filter circuit board or parts failure
and "DCL2" on the outdoor
in outdoor noise filter circuit
power circuit board. Refer to
board
"11-6. TEST POINT DIAGRAM".
As for SW75VHA(R3), it is
5 a) Check connection of outdoor noise filter
especially needed to check the
circuit board.
resistance RS on the noise filter b) Replace outdoor noise filter circuit board.
circuit board.
Refer to "11-6. TEST POINT DIAGRAM".
6Defective outdoor power circuit 6 Replace outdoor power circuit board.
board
7Defective outdoor controller
7 Replace controller board (When items above
circuit board
are checked but the units cannot be repaired).
63L connector open (SW100/120 only)
1Disconnection or contact failure
Abnormal if 63L connector circuit is open for
of 63L connector on outdoor
3 minutes continuously after power supply.
controller circuit board
63L: Low-pressure switch
2Disconnection or contact failure
of 63L
363L is working due to
refrigerant leakage or defective
parts.
4Defective outdoor controller
circuit board
F5
63H connector open
1Disconnection or contact failure
Abnormal if 63H connector circuit is open for
of 63H connector on outdoor
3 minutes continuously after power supply.
controller circuit board
63H: High-pressure switch
2Disconnection or contact failure
of 63H
363H is working due to defective
parts.
4Defective outdoor controller
circuit board
OCH533D
28
1Check connection of 63L connector on
outdoor controller circuit board.
Refer to "11-6. TEST POINT DIAGRAM".
2Check the 63L side of connecting wire.
3Check refrigerant pressure.
Charge additional refrigerant.
Check continuity by tester.
Replace the parts if the parts are defective.
4Replace outdoor controller circuit board.
1Check connection of 63H connector on
outdoor controller circuit board.
Refer to "11-6. TEST POINT DIAGRAM".
2Check the 63H side of connecting wire.
3Check continuity by tester.
Replace the parts if the parts are defective.
4Replace outdoor controller circuit board.
Check code
2 connector open (SW100/120 only)
Abnormal if both 63H and 63L connector
circuits are open for three minutes
continuously after power supply.
F9
EA
Eb
63H: High-pressure switch
63L: Low-pressure switch
Indoor/outdoor unit connector
miswiring, excessive number of units (4
units or more)
1.Outdoor controller circuit board can
automatically check the number of
connected indoor units. Abnormal if the
number cannot be checked automatically
due to miswiring of indoor/outdoor unit
connecting wire and etc. after power is
turned on for 4 minutes.
2.Abnormal if outdoor controller circuit
board recognizes excessive number of
indoor units.
Judgment and action
1Disconnection or contact failure
of connector (63H,63L) on
outdoor controller circuit board
2Disconnection or contact failure
of 63H, 63L
363H and 63L are working due
to defective parts.
4Defective outdoor controller
board
1Check connection of connector (63H,63L) on
outdoor controller circuit board.
Refer to "11-6. TEST POINT DIAGRAM".
2Check the 63H and 63L side of connecting
wire.
3Check continuity by tester.
Replace the parts if the parts are defective.
4Replace outdoor controller circuit board.
1Contact failure or miswiring of
indoor/outdoor unit connecting
wire
2Diameter or length of indoor/
outdoor unit connecting wire is
out of specified capacity.
3Excessive number of indoor
units are connected to 1
outdoor unit (2 units or more).
4Defective transmitting receiving
circuit of outdoor controller
circuit board
5Defective transmitting receiving
circuit of indoor controller board
6Defective indoor power board
72 or more outdoor units have
refrigerant address “0” .
(In case of group control)
8Noise has entered into power
supply or indoor / outdoor unit
connecting wire.
1Check disconnection or looseness or polarity
of indoor/outdoor unit connecting wire of
indoor and outdoor units.
2Check diameter and length of indoor/outdoor
unit connecting wire.
Total wiring length: 80 m
(including wiring connecting each indoor unit
and between indoor and outdoor unit)
Also check if the connection order of flat
cable is S1, S2, S3.
3Check the number of indoor units that are
connected to one outdoor unit. (If EA is
detected)
4–6 Turn the power off once, and on again to
check.
Replace outdoor controller circuit board,
indoor controller board or indoor power
board if abnormality occurs again.
Miswiring of indoor/outdoor unit
connecting wire (converse wiring or
disconnection)
Outdoor controller circuit board can
automatically set the unit number of indoor
units.
Abnormal if the indoor unit number cannot
be set within 4 minutes after power on
because of miswiring (converse wiring
or disconnection) of indoor/outdoor unit
connecting wire.
1Contact failure or miswiring of 7Check if refrigerant addresses (SW1-3 to
indoor/outdoor unit connecting
SW1-6 on outdoor controller circuit board) are
wire
overlapping in case of group control system.
2Diameter or length of indoor/
outdoor unit connecting wire is 8Check transmission path, and remove the
out of specified capacity.
cause.
4Defective transmitting receiving
circuit of outdoor controller circuit Note: The descriptions above, 1–8, are for
board
EA, Eb and EC.
5Defective transmitting receiving
circuit of indoor controller board
6Defective indoor power board
72 or more outdoor units have
refrigerant address “0” .
(In case of group control)
8Noise has entered into power
supply or indoor/outdoor unit
connecting wire.
Startup time over
The unit cannot finish startup process
within 4 minutes after power on.
1Contact failure of indoor/
outdoor unit connecting wire
2Diameter or length of indoor/
outdoor unit connecting wire is
out of specified capacity.
72 or more outdoor units have
refrigerant address “0” .
(In case of group control)
8Noise has entered into power
supply or indoor/outdoor unit
connecting wire.
Incorrect connection
The outdoor unit does not receive the signals of I/F or FTC.
1A device other than Interface
unit or Flow temp. controller
unit is connected to the unit.
EC
EE
Case
Abnormal point and detection method
OCH533D
29
1Connect I/F or FTC to the unit.
<Abnormalities detected while unit is operating>
Check code
Abnormal point and detection method
High pressure (High-pressure switch
63H operated)
Abnormal if high-pressure switch 63H
operated (4.15 MPa) during compressor
operation.
63H: High-pressure switch
U1
Case
1Defective operation of stop
valve (Not fully open)
2Clogged or broken pipe
3Locked outdoor fan motor
4Malfunction of outdoor fan
motor
5Short cycle of outdoor unit
6Dirt of outdoor heat exchanger
7Decreased airflow caused by
defective inspection of outside
temperature thermistor
(It detects lower temperature
than actual temperature.)
8Disconnection or contact failure
of connector (63H) on outdoor
controller board
9Disconnection or contact failure
of 63H connection
0Defective outdoor controller
board
Judgment and action
1Check if stop valve is fully open.
2Check piping and repair defect.
3–6 Check outdoor unit and repair defect.
7Check the detected temperature of outside
temperature thermistor on LED display.
(SW2 on A-Control Service Tool : Refer to
"11-7. FUNCTION OF SWITCHES,
CONNECTORS AND JUMPERS".)
8–0Turn the power off and check F5 is
displayed when the power is turned again.
When F5 is displayed, refer to “Judgment
and action” for F5.
1Defective action of linear
expansion valve
1Check linear expansion valve.
Refer to "11-4. HOW TO CHECK THE
PARTS".
2Malfunction of fan driving circuit 2Replace outdoor controller board.
High discharge temperature
(1) Abnormal if discharge temperature
thermistor (TH4) exceeds 125: or
110: continuously for 5 minutes.
Abnormal if discharge temperature
thermistor (TH4) exceeds 110: or
more continuously for 30 seconds after
90 seconds have passed since the
defrosting operation started.
U2
(2) Abnormal if discharge superheat
(Cooling: TH4−T63HS /
Heating: TH4−T63HS) exceeds 70:
continuously for 10 minutes.
High comp. surface temperature
Abnormal if comp. surface temperature
(TH34) exceeds 125:. In the case of
high comp. surface temperature error,
compressor does not restart unless the
thermistor (TH34) becomes less than
95:.
U3
Open/short circuit of discharge
temperature thermistor (TH4) / Comp.
surface temperature thermistor (TH34)
Abnormal if open (3: or less) or short
(217: or more) is detected during
compressor operation.
(Detection is inoperative for 10 minutes
of compressor starting process and for 10
minutes after and during defrosting.)
OCH533D
1Overheated compressor
operation caused by shortage
of refrigerant
2Defective operation of stop
valve
3Defective thermistor
4Defective outdoor controller
board
1Check intake superheat.
Check leakage of refrigerant.
Charge additional refrigerant.
2Check if stop valve is fully open.
34Turn the power off and check if U3 is
displayed when the power is turned on again.
When U3 is displayed, refer to “Judgment
and action” for U3.
5Defective action of linear
5Check linear expansion valve.
expansion valve
Refer to "11-4. HOW TO CHECK THE
PARTS".
6Clogging with foreign objects in
refrigerant circuit
6 After recovering refrigerant, remove water
Note: Clogging occur in the parts
from entire refrigerant circuit under vacuum
which become below
more than 1 hour.
freezing point when water
enters in refrigerant circuit.
1Disconnection or contact failure 1Check connection of connector (TH4/TH34)
on the outdoor controller circuit board.
of connector (TH4/TH34) on
Check breaking of the lead wire for
the outdoor controller circuit
thermistor (TH4/TH34). Refer to "11-6. TEST
board
POINT DIAGRAM".
2Defective thermistor
2Check resistance value of thermistor (TH4/
TH34) or temperature by microprocessor.
(Thermistor/TH4/TH34: Refer to "11-4. HOW
TO CHECK THE PARTS".)
3Defective outdoor controller
circuit board
(SW2 on A-Control Service Tool: Refer to "11-7.
FUNCTION OF SWITCHES, CONNECTORS
AND JUMPERS". )
3Replace outdoor controller board.
30
Check code
Abnormal point and detection method
(
U4
U5
U6
U7
U8
Judgment and action
Case
Open/short of outdoor unit thermistors 1Disconnection or contact failure 1 Check connection of connector (TH3, TH7/6) on the
(TH3, TH6, TH7, and TH8)
of connectors
outdoor controller circuit board. Check connection
Abnormal if open or short is detected
of connector (CN3) on the outdoor power circuit
Outdoor controller circuit board:
during compressor operation.
board. Check breaking of the lead wire for thermistor
TH3, TH7/6
Open detection of thermistors TH3 and
(TH3, TH6,TH7,TH8). Refer to "11-6. TEST POINT
Outdoor power circuit board:
TH6 is inoperative for 10 seconds to 10
DIAGRAM".
CN3
minutes after compressor starting and 10
2 Check resistance value of thermistor (TH3,
minutes after and during defrosting.
TH6,TH7,TH8) or check temperature by
Note: Check which unit has abnormality in its
microprocessor. (Thermistor/TH3,TH6,TH7,TH8:
2Defective thermistor
thermistor by switching the mode of SW2.
Refer to "11-4. HOW TO CHECK THE PARTS".) (SW2
(PAC-SK52ST) (Refer to "11-7. FUNCTION
on A-Control Service Tool: Refer to "11-7. FUNCTION
OF SWITCHES, CONNECTORS AND
OF SWITCHES, CONNECTORS AND JUMPERS".)
3Defective outdoor controller
JUMPERS". )
circuit board
3 Replace outdoor controller circuit board.
Note: SW100/120V, Heat sink
Note: Emergency operation is available in case of
thermistor(TH8) is in the power module.
abnormalities of TH3, TH6 and TH7.
Thermistors
Open detection
Short detection
Symbol
Name
TH3
Thermistor <Liquid>
−40°C or below
90°C or above
TH6
Thermistor <2-phase pipe>
−40°C or below
90°C or above
TH7
Thermistor <Ambient>
−40°C or below
90°C or above
TH8
Thermistor <Heat sink> SW75V SW100/120Y
−27°C or below
102°C or above
TH8
Internal thermistor SW100/120V
−35°C or below
170°C or above
Temperature of heat sink
Abnormal if heat sink thermistor (TH8)
detects temperature indicated below.
SW75VHA(R3)·································· 79°C
SW75VHAR4····································· 77°C
SW100V ········································· 94°C
SW100Y ········································· 84°C
SW120V ········································· 94°C
SW120Y ········································· 84°C
)
1The outdoor fan motor is
locked.
2 Failure of outdoor fan motor
3 Air flow path is clogged.
4 Rise of ambient temperature
12 Check outdoor fan.
3 Check air flow path for cooling.
4 Check if there is something which causes
temperature rise around outdoor unit.
(Upper limit of ambient temperature is 46:.)
Turn off power, and on again to check if U5 is
displayed within 30 minutes.
If U4 is displayed instead of U5, follow the
action to be taken for U4.
5 Check resistance value of thermistor (TH8)
or temperature by microprocessor.
(Thermistor/TH8: Refer to "11-4. HOW TO
5 Defective thermistor
CHECK THE PARTS".) (SW2 on A-Control
Service Tool: Refer to "11-7. FUNCTION OF
SWITCHES, CONNECTORS AND JUMPERS".)
6 Defective input circuit of
outdoor power circuit board
6 Replace outdoor power circuit board.
7 Failure of outdoor fan drive circuit 7 Replace outdoor controller circuit board.
Power module
1Outdoor stop valve is closed.
Check abnormality by driving power module 2Decrease of power supply voltage
in case overcurrent is detected.
3Looseness, disconnection or
(UF or UP error condition)
converse of compressor wiring
connection
4Defective compressor
5Defective outdoor power circuit
board
1Open stop valve.
2 Check facility of power supply.
3 Correct the wiring (U•V•W phase) to
compressor. Refer to "11-6. TEST POINT
DIAGRAM" (Outdoor power circuit board).
4 Check compressor referring to "11-5. HOW
TO CHECK THE PARTS".
5 Replace outdoor power circuit board.
Too low superheat due to low discharge 1Disconnection or loose
temperature
connection of discharge
Abnormal if discharge superheat is
temperature thermistor (TH4)
continuously detected less than or equal
2 Defective holder of discharge
to−15: for 3 minutes even though linear
temperature thermistor
expansion valve has minimum open pulse after 3 Disconnection or loose connection
compressor starts operating for 10 minutes.
of linear expansion valve’s coil
4 Disconnection or loose
connection of linear expansion
valve’s connector
5 Defective linear expansion valve
12 C
heck the installation conditions of
discharge temperature thermistor (TH4).
Outdoor fan motor
1 Failure in the operation of the
Abnormal if rotational frequency of the fan
DC fan motor
motor is not detected during DC fan motor 2 Failure in the outdoor circuit
operation.
controller board
Fan motor rotational frequency is abnormal if;
• 100 rpm or below detected continuously
for 15 seconds at 20: or more outside
air temperature.
• 50 rpm or below or 1500 rpm or more
detected continuously for 1 minute.
1 Check or replace the DC fan motor.
OCH533D
31
3 Check the coil of linear expansion valve.
Refer to "11-5. HOW TO CHECK THE
COMPONENTS".
4 Check the connection or contact of LEV-A
and LEV-B on outdoor controller circuit board.
5 Check linear expansion valve. Refer to "114. HOW TO CHECK THE PARTS".
2C
heck the voltage of the outdoor circuit
controller board during operation.
3 Replace the outdoor circuit controller board.
(When the failure is still indicated even after
performing the action 1 above.)
Check Code Abnormal point and detection method
Case
Judgment and action
To find out the details about U9 error, turn ON SW2-1, 2-2, 2-3, 2-4, 2-5 and 2-6 when U9 error occurs.
Detailed To find out the detail history (latest) about U9 error, turn ON SW2-1, 2-2 and 2-6.
codes
Refer to "11-7. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS".
01
02
U9
04
08
Overvoltage error
1 Abnormal increase in power source volt• Increase in DC bus voltage to
age
SW75VHA(R3): 420 V
2 Disconnection of compressor wiring
SW75VHAR4: 400 V
3D
efective outdoor power circuit
SW100, 120V: 400 V
board
SW100, 120Y: 760 V
4C
ompressor has a ground fault.
1 Check the field facility for the power supply.
2C
orrect the wiring (U.V.W phase) to
compressor. Refer to "11-6. TEST POINT
DIAGRAM" (Outdoor power circuit board).
3 Replace outdoor power circuit board.
4 Check compressor for electrical
insulation. Replace compressor.
Undervoltage error
1 Decrease in power source voltage,
• Instantaneous decrease in DC
instantaneous stop
bus voltage to
2 Disconnection or loose connection of
SW75, 100, 120V: 200 V
CN52C on the outdoor power circuit
SW100, 120Y: 350 V
board/controller circuit board (SW100,
120V)
3D
isconnection or loose connection
of CN52C on the outdoor noise filter
circuit board/controller circuit board
(SW75VHA(R3))
4D
efective converter drive circuit in
outdoor power circuit board (SW·V)
5D
efective 52C drive circuit in outdoor
power circuit board (SW100, 120V/Y,
SW75VHAR4)
6 Defective 52C drive circuit in
outdoor noise filter circuit board
(SW75VHA(R3))
7 Defective outdoor converter circuit
board (SW·Y)
8D
isconnection or loose connection of
rush current protect resistor RS (SW·Y)
9 Defective rush current protect resistor RS (SW·Y)
0 Disconnection or loose connection
of main smoothing capacitor CB
(SW100,120V)
1 Disconnection or loose connection of
CN2 on the outdoor power circuit board
/controller circuit board (SW100,120V)
2 Power circuit failure on DC supply
for 18V DC output on outdoor controller circuit board (SW100,120V)
1C
heck the field facility for the power
supply.
23 Check CN52C wiring. (SW·V excluding SW75VHAR4)
Input current sensor error/
1L
1-phase open (SW·Y)
L1-phase open error
isconnection or loose connection
2D
between TB1 and outdoor noise filter
• Decrease in input current
circuit board (SW75V(R3), SW·Y)
through outdoor unit to 0.1 A
only if operation frequency is 3 Disconnection or loose connection of
CN5 on the outdoor power circuit board/
more than or equal to 40 Hz
CNCT on the outdoor noise filter board
or compressor current is more
(SW75V(R3), SW·Y)
than or equal to 6 A.
4 Defective ACCT (AC current trans)
on the outdoor noise filter circuit
board (SW75V(R3), SW·Y)
5 Defective input current detection
circuit in outdoor power circuit board
6D
efective outdoor controller circuit board
Abnormal power synchronous 1
signal
• No input of power synchronous 2
signal to power circuit board
• Power synchronous signal
3
of 44 Hz or less, or 65 Hz or
more is detected on power
circuit board.
4
OCH533D
istortion of power source voltage,
D
Noise superimposition.
Disconnection or loose connection
of earth wiring
Disconnection or loose connection
of CN2 on the outdoor power circuit
board /controller circuit board
Defective power synchronous signal
circuit in outdoor controller circuit board
5 Defective power synchronous signal
circuit in outdoor power circuit board
32
4 Replace outdoor power circuit board.
(SW·V)
5 Replace outdoor power circuit board.
(SW100,120V/Y, SW75VHAR4)
6 Replace outdoor noise filter circuit
board. (SW75VHA(R3))
7 Replace outdoor converter circuit
board. (SW·Y)
8 Check RS wiring. (SW·Y)
9 Replace RS. (SW·Y)
0 Check CB wiring. (SW100,120V)
1 Check CN2 wiring. (SW100,120V)
2R
eplace outdoor controller circuit
board. (SW100,120V)
1C
heck the field facility for the power
supply. (SW·Y)
2 Check the wiring between TB1 and
outdoor noise filter circuit board.
(SW75V(R3), SW·Y)
3 Check CN5/CNCT wiring. (SW75V(R3),
SW·Y)
4R
eplace outdoor noise filter circuit
board. (SW·Y)
5 Replace outdoor power circuit board.
6 Replace outdoor controller circuit board.
1C
heck the field facility for the power
supply.
2 Check earth wiring.
3 Check CN2 wiring.
4 Replace outdoor controller circuit board.
5 Replace outdoor power circuit board.
Check Code Abnormal point and detection method
Detailed PFC error (Overvoltage/
codes Undervoltage/Overcurrent)
• PFC detected any of the following
a) Increase of DC bus voltage to
420 V (SW75VHA(R3),SW·V),
400 V (SW75VHAR4)
ecrease in PFC control
b) D
10
voltage to 12 V DC or lower
c) Increase in input current to
50A peak
U9
(SW75V only)
20
Ud
UE
UF
UH
PFC/IGBT error (Undervoltage)
• When Compressor is running,
DC bus voltage stays at 310V or
lower for consecutive 10 seconds
(SW·V only)
Overheat protection
Abnormal if liquid thermistor (TH3), condensing temperature T63HS detects 70:
or more during compressor operation.
Judgment and action
Case
bnormal increase in power
1A
source voltage
2 Decrease in power source
voltage, instantaneous stop
3 Disconnection of compressor
wiring
4 Misconnection of reactor (ACL)
5 Defective outdoor power circuit
board
6D
efective reactor (ACL)
7D
isconnection or loose
connection of CN2 on the
outdoor power circuit board/
controller circuit board
12 C
heck the field facility for the power
supply.
3 Correct the wiring (U.V.W phase) to
compressor. Refer to "11-6. TEST POINT
DIAGRAM" (Outdoor power circuit board).
4
5
6
7
Correct the wiring of reactor (ACL).
Replace outdoor power circuit board.
Replace reactor (ACL).
Check CN2 wiring.
1 Incorrect switch settings on the 1 Correction of a model select
outdoor controller circuit board
for model select
2D
efective outdoor power circuit 2 Replace outdoor power circuit board.
board
3D
efective outdoor controller circuit 3 Replace outdoor controller circuit board.
board
1Check outdoor unit air passage.
1Defective outdoor fan (fan
motor) or short cycle of outdoor
unit during cooling operation
2Defective liquid thermistor
23 Turn the power off and on again to check
(TH3), condensing temperature
the check code. If U4 is displayed, follow
T63HS
the U4 processing direction.
3Defective outdoor controller board
1Check connection of connector (63HS) on
the outdoor controller circuit board.
Check breaking of the lead wire for
thermistor (63HS).
2 Check pressure by microprocessor.
(Pressure sensor/ 63HS)
(SW2: Refer to "11-7. FUNCTION OF
SWITCHES, CONNECTORS AND JUMPERS". )
3Replace outdoor controller board.
1Stop valve is closed.
1Open stop valve.
2Decrease of power supply
2Check facility of power supply.
voltage
3Correct the wiring (U • V • W phase) to
3Looseness, disconnection or
converse of compressor wiring
compressor.
connection
Refer to "11-6. TEST POINT DIAGRAM".
(Outdoor power circuit board).
4Defective compressor
4Check compressor.
Refer to "11-4. HOW TO CHECK THE PARTS".
5Defective outdoor power board 5Replace outdoor power circuit board.
Abnormal pressure of pressure sensor 1Disconnection or contact
(63HS)
failure of connector (63HS) on
Abnormal if pressure sensor (63HS)
the outdoor controller circuit
detects 0.1 MPa or less.
board
Detection is inoperative for 3 minutes after 2Defective pressure sensor
compressor starting and 3 minutes after
and during defrosting.
3Defective outdoor controller
circuit board
Compressor overcurrent interruption
(When compressor locked)
Abnormal if overcurrent of DC bus or
compressor is detected within 30 seconds
after compressor starts operating.
Current sensor error or input current error
• Abnormal if current sensor detects −1.0A
to 1.0A during compressor operation. (This
error is ignored in case of test run mode.)
• Abnormal if 40A (SW100/120V, SW75VHAR4)
of input current is detected or 37A
(SW100/120V, SW75VHAR4) or more of
input current is detected for 10 seconds
continuously.
1Disconnection of compressor
wiring
2Defective circuit of current
sensor on outdoor power circuit
board
3Decrease of power supply
voltage
4Leakage or shortage of
refrigerant
1 Correct the wiring (U • V • W phase) to
compressor. Refer to "11-6. TEST POINT
DIAGRAM" (Outdoor power circuit board).
2Replace outdoor power circuit board.
Low pressure (63L operated)
(SW100/120 only)
Abnormal if 63L is operated (under
−0.03MPa) during compressor operation.
63L: Low-pressure switch
1Stop valve of outdoor unit is
closed during operation.
2Disconnection or loose
connection of connector (63L)
on outdoor controller board
3Disconnection or loose
connection of 63L
4Defective outdoor controller
board
5Leakage or shortage of
refrigerant
6Malfunction of linear expansion
valve
1Check stop valve.
UL
OCH533D
33
3Check the facility of power supply.
4Check leakage of refrigerant.
2–4 Turn the power off and on again to check
if F3 is displayed on restarting.
If F3 is displayed, follow the F3 processing
direction.
5Correct to proper amount of refrigerant.
6Check linear expansion valve.
Refer to "11-4. HOW TO CHECK THE PARTS".
Check Code
Abnormal point and detection method
Compressor overcurrent interruption
Abnormal if overcurrent DC bus or
compressor is detected after compressor
starts operating for 30 seconds.
UP
Case
1Stop valve of outdoor unit is
closed.
2Decrease of power supply
voltage
3Looseness, disconnection or
converse of compressor wiring
connection
4Defective fan of outdoor units
5Short cycle of outdoor units
6Defective input circuit of
outdoor controller board
E0
or
E4
E1
or
E2
Remote controller control board
1Abnormal if data cannot be normally
read from the nonvolatile memory of the
remote controller control board.
(Check code: E1)
2Abnormal if the clock function of remote
controller cannot be normally operated.
(Check code: E2)
OCH533D
1Open stop valve.
2 Check facility of power supply.
3C
orrect the wiring (U•V•W phase) to
compressor. Refer to "11-6. TEST POINT
DIAGRAM" (Outdoor power circuit board).
4 Check outdoor fan.
5Solve short cycle.
6Replace outdoor controller circuit board.
Note: Before the replacement of the outdoor
controller circuit board, disconnect the
wiring to compressor from the outdoor
power circuit board and check the output
voltage among phases, U, V, W, during
test run.
No defect on board if voltage among
phases (U-V, V-W and W-U) is same.
Make sure to perform the voltage check
with same performing frequency.
7Defective compressor
8Defective outdoor power circuit 7 Check compressor. Refer to "11-4. HOW TO
board
CHECK THE PARTS".
9Dip switch setting difference of 8Replace outdoor power circuit board.
outdoor controller circuit board
9Check the DIP switch setting of outdoor
controller circuit board.
Remote controller transmission error (E0)/ 1Contact failure at transmission
signal receiving error (E4)
wire of remote controller
1 Abnormal if main or sub remote
2All remote controllers are set
controller cannot receive normally
as “sub” remote controller.
any transmission from indoor unit of
In this case, E0 is displayed
refrigerant address “0” for 3 minutes.
on remote controller, and E4
(Check code : E0)
is displayed at LED (LED1,
LED2) on the outdoor controller
2 Abnormal if sub remote controller could
not receive any signal for 2 minutes.
circuit board.
(Check code: E0)
3Miswiring of remote controller
1 Abnormal if indoor controller board
cannot receive normally any data from
remote controller board or from other
indoor controller board for 3 minutes.
(Check code: E4)
2 Indoor controller board cannot receive
any signal from remote controller for 2
minutes. (Check code: E4)
Judgment and action
1Check disconnection or looseness of indoor
unit or transmission wire of remote controller.
2Set one of the remote controllers “main” if
there is no problem with the action above.
3Check wiring of remote controller.
Refer to the indoor unit's Installation Manual
for remote controller connection.
If the cause of trouble is not in above 1–3,
4Diagnose remote controllers.
a) When “RC OK” is displayed,
Remote controllers have no problem.
Turn the power off, and on again to check.
If abnormality generates again, replace
4Defective transmitting receiving
indoor controller board.
circuit of remote controller
b) When “RC NG” is displayed,
5Defective transmitting receiving
Replace remote controller.
circuit of indoor controller board
c) When "RCE3" or "ERC00-66" is displayed,
of refrigerant address “0”
noise may be causing abnormality.
6Noise has entered into the
Note: If the unit is not normal after replacing
transmission wire of remote
indoor controller board in group control,
controller.
indoor controller board of address “0”
may be abnormal.
1Defective remote controller
34
1Replace remote controller.
Check code
E3
or
E5
E6
E8
E9
Abnormal point and detection method
Judgment and action
12 remote controller are set as
1Set a remote controller to main, and the
“main.”
other to sub.
(In case of 2 remote controllers)
Interface unit/Flow temp. controller
or outdoor unit communication error
(Signal receiving error)
1Abnormal if Interface unit/Flow temp.
controller cannot receive any signal
normally for 6 minutes after turning the
power on.
2Abnormal if Interface unit/Flow temp.
controller cannot receive any signal
normally for 3 minutes.
1Contact failure, short circuit
Note: Check LED display on the outdoor
or, miswiring (converse wiring)
controller circuit board. (Connect
of Interface unit/Flow temp.
A-control service tool, PAC-SK52ST.)
controller or outdoor unit
1Check disconnection or looseness of
connecting wire
Interface unit/Flow temp. controller or
2Defective transmitting receiving
outdoor unit connecting wire of Interface unit/
circuit of outdoor controller
Flow temp. controller or outdoor unit.
circuit board
2–4 Turn the power off, and on again to check.
3Defective transmitting receiving
If abnormality generates again, replace
circuit of Interface unit/Flow
Interface unit/Flow temp. controller or
temp. controller
outdoor controller circuit board.
4Noise has entered into Interface
unit/Flow temp. controller or
outdoor unit connecting wire.
2Remote controller is connected 2Remote controller is connected with only one
with 2 indoor units or more.
indoor unit.
3Repetition of refrigerant
3The address changes to a separate setting.
address
4Defective transmitting receiving 4–6 Diagnose remote controller.
circuit of remote controller
a)When “RC OK” is displayed, remote
5Defective transmitting receiving
controllers have no problem.
circuit of indoor controller board
Turn the power off, and on again to check.
1Abnormal if indoor controller board could 6Noise has entered into
When becoming abnormal again, replace
not find blank of transmission path.
transmission wire of remote
indoor controller board.
(Check code: E5)
controller.
b)When “RC NG” is displayed, replace
2Indoor controller board receives
remote controller.
transmitted data at the same time,
c)When “RC E3” or “ERC 00-66” is
compares the data, and when detecting
displayed, noise may be causing
it, judges different data to be abnormal
abnormality.
30 continuous times. (Check code: E5)
Indoor/outdoor unit communication error 1Contact failure of indoor/
1Check disconnection or looseness of indoor/
(Signal receiving error) (Outdoor unit)
outdoor unit connecting wire of indoor or
outdoor unit connecting wire
Abnormal if outdoor controller circuit board 2Defective communication circuit
outdoor units.
could not receive anything normally for 3
of outdoor controller circuit board 2–4 Turn the power off, and on again to
minutes.
check. Replace indoor controller board
3Defective communication circuit
or outdoor controller circuit board if
of indoor controller board
abnormality is displayed again.
4Noise has entered into indoor/
outdoor unit connecting wire.
Indoor/outdoor unit communication error
(Transmitting error) (Outdoor unit)
1Abnormal if “0” receiving is detected
30 times continuously though outdoor
controller circuit board has transmitted “1”.
2 Abnormal if outdoor controller
circuit board could not find blank of
transmission path for 3 minutes.
1Indoor/ outdoor unit connecting 1Check disconnection or looseness of indoor/
outdoor unit connecting wire.
wire has contact failure.
2Defective communication circuit 2–4 Turn the power off, and on again to
of outdoor controller circuit board
check. Replace outdoor controller circuit
board if abnormality is displayed again.
3Noise has entered power supply.
4Noise has entered indoor/
outdoor unit connecting wire.
Non defined check code
This code is displayed when non defined
check code is received.
1Noise has entered transmission 12 Turn the power off, and on again to check.
wire of remote controller.
Replace indoor controller board or outdoor
controller circuit board if abnormality is
2Noise has entered indoor/
outdoor unit connecting wire.
displayed again.
3Replace outdoor unit with inverter type
3Outdoor unit is not inverter
outdoor unit.
models.
EF
Ed
Case
Remote controller transmission error (E3)/
signal receiving error (E5)
1Abnormal if remote controller could not
find blank of transmission path for 6
seconds and could not transmit.
(Check code: E3)
2Remote controller receives transmitted
data at the same time, compares the
data, and when detecting it, judges
different data to be abnormal 30
continuous times. (Check code: E3)
Serial communication error
1Breaking of wire or contact
12 Check connection of each connector CN2
1Abnormal if serial communication between
failure of connector CN2
and CN4 between the outdoor controller
outdoor controller circuit board and
between the outdoor controller
circuit board and the outdoor power circuit
outdoor power circuit board is defective.
circuit board and the outdoor
board.
power circuit board
2Breaking of wire or contact
failure of connector CN4
between the outdoor controller
circuit board and the outdoor
power circuit board
3Defective communication circuit 3Replace outdoor power circuit board.
of outdoor power circuit board
4Defective communication circuit 4Replace outdoor controller circuit board.
of outdoor controller circuit board
for outdoor power circuit board
OCH533D
35
Check Code
P6
Abnormal point and detection method
Case
Freezing/overheating protection is working
Overheating protection <Heating mode>
Abnormal if condensing temperature of
pressure sensor (63HS) detects
Tcond. °C or more and compressor
operation frequency is less than or equal
to 25 Hz. Detection is inoperative during
defrosting.
1Overcharge of refrigerant
2Defective refrigerant circuit (clogs)
3Malfunction of linear expansion valve
4Reduced water flow
· Clogged filter
· Leakage of water
5High temperature
· Over-load
· Inlet water is too warm.
6Defective water pump
Judgment and action
heck operating condition of refrigerant
12 C
circuit.
3Check linear expansion valve.
45 Check water piping.
6Check water pump.
stage-a
stage-s
stage-b
stage-c
Tcond
stage-d
stage-f
stage-e
stage-g
−18
−17
−15 −14
−12 −11
−9
−8
−6
stage-a stage-b stage-c stage-d stage-e stage-f
Tcond
63
61
60
58
56
53
SW75
63
62
61
60
59
57
SW100/120
P9
Actual tank temperature thermistor (TH5) 1Defective thermistor characteristics
1 The unit is 3-minute resume prevention mode if short/open of thermistor is
2Contact failure of interface unit/
detected. Abnormal if the unit does not
Flow temp. controller
reset normally after 3 minutes. (The unit Refer to the indoor unit's Instalreturns to normal operation, if it has been
lation Manual for TH5 connecreset normally)
tion.
3 Breaking of wire or contact
failure of thermistor wiring
2 Constantly detected during cooling,
heating, heating ECO, anti freeze and
4 Defective PCB of interface
hot water operation.
unit/Flow temp. controller
−5
−3
stage-g
50
51
−2
stage-s
61
61
27 28
Ambient temperature (TH7) [°C]
1–3 Check resistance value of thermistor.
0:.... 15.0 k"
30:...... 4.3 k"
10:...... 9.6 k"
40:...... 3.0 k"
20:...... 6.3 k"
If you put force on (draw or bend) the lead wire
with measuring resistance value of thermistor,
breaking of wire or contact failure can be detected.
2Check contact failure of Interface unit/Flow
temp. controller. Refer to the indoor unit's
Installation Manual.
Turn the power on again and check restart
after inserting connector again.
4Check actual tank temperature display on
remote controller.
Replace PCB of Interface unit/Flow temp.
controller if there is abnormal difference with
actual tank temperature.
Turn the power off, and on again to operate
after check.
11-3. TROUBLESHOOTING
Phenomena
1. Remote controller display does not
work.
Factor
Countermeasure
112 V DC is not supplied to remote controller.
(Power supply display
is not indicated on LCD.)
1Check LED2 on indoor controller board.
(1) When LED2 is lit.
Check the remote controller wiring for
breaking or contact failure.
(2) When LED2 is blinking.
Check short circuit of remote
controller wiring.
(3) When LED2 is not lit.
Refer to No.3 below.
212–15 V DC is supplied to remote controller, however, 2Check the following.
no display is indicated.
• Failure of remote controller if “PLEASE
• “PLEASE WAIT” is not displayed.
WAIT” is not displayed
• “PLEASE WAIT” is displayed.
• Refer to No.2 below if “PLEASE WAIT”
is displayed.
1Normal operation
2. “PLEASE WAIT” display is remained 1At longest 2 minutes after the power supply “PLEASE
2Self-diagnosis of remote controller
WAIT” is displayed to start up.
on the remote controller.
3”PLEASE WAIT” is displayed for 6 minutes
2Communication error between the remote controller
at most in case of indoor/outdoor unit
and indoor unit
communication error. Check LED3 on indoor
3Communication error between the indoor and outdoor
controller board.
unit
(1) When LED3 is not blinking.
Check indoor/outdoor connecting wire for
miswiring. (Converse wiring of S1 and S2, or
break of S3 wiring.)
(2) When LED3 is blinking.
Indoor/outdoor connecting wire is normal.
4Check LED display on outdoor controller
4Outdoor unit protection device connector is open.
circuit board. Refer to "11-7. FUNCTION OF
SWITCHES, CONNECTORS AND JUMPERS".
Check protection device connector (63L and
63H) for contact failure. Refer to "11-6. TEST
POINT DIAGRAM".
OCH533D
36
Factor
Phenomena
3. When pressing the remote controller 1After cancelling to select function from the remote
operation switch, the OPERATION
controller, the remote controller operation switch will
display is appeared but it will be
be not accepted for approx. 30 seconds.
turned off soon.
Countermeasure
1Normal operation
4. Even controlling by the wireless
1The pair number settings of the wireless remote
1Check the pair number settings.
remote controller, no beep is heard controller and indoor controller board are mismatched.
and the unit does not start operating. Operation display is indicated
on wireless remote controller.
5. When operating by the wireless
remote controller, beep sound is
heard, however, unit does not start
operating.
1No operation for 2 minutes at most after the power
1Normal operation
supply ON.
2Local remote controller operation is prohibited.
2Normal operation
• Remote controlling adaptor is connected to CN32
on the indoor controller board.
• Local remote controller operation is prohibited
by centralized controller etc. since it is connected to
MELANS.
3Phenomena of No.2.
3Check the phenomena No.2.
6. Remote controller display works
1Refrigerant shortage
normally and the unit performs cooling operation, however, the capacity
cannot be fully obtained. (The air
does not cool well.)
2Filter clogging
3Heat exchanger clogging
4Air duct short cycle
7. Remote controller display works
normally and the unit performs
heating operation, however, the
capacity cannot be fully obtained.
1Linear expansion valve fault
Opening cannot be adjusted well due to linear
expansion valve fault.
2Refrigerant shortage
3Lack of insulation for refrigerant piping
4Filter clogging
5Heat exchanger clogging
6Air duct short cycle
7Bypass circuit of outdoor unit fault
12Normal operation
8. 1For 3 minutes after temperature
(For protection of compressor)
adjuster turns off, the compressor
will not start operating even if temperature adjuster is turned on.
2For 3 minutes after temperature
adjuster turns on, the compressor
will not stop operating even if temperature adjuster is turned off.
(Compressor stops operating
immediately when turning off by
the remote controller.)
OCH533D
37
1• If refrigerant leaks, discharging temperature rises and LEV opening increases.
Inspect leakage by checking the temperature and opening.
• Check pipe connections for gas leakage.
2Open intake grille and check the filter.
Clean the filter by removing dirt or dust on
it.
3• If the filter is clogged, indoor pipe temperature rises and discharging pressure
increases. Check if heat exchanger is
clogged by inspecting discharging pressure.
• Clean the heat exchanger.
4Remove the blockage.
1• Discharging temperature and indoor heat
exchanger temperature does not rise.
Inspect the failure by checking discharging pressure.
• Replace linear expansion valve.
2• If refrigerant leaks, discharging tempera
ture rises and LEV opening increases.
Inspect leakage by checking the temperature and opening.
• Check pipe connections for gas leakage.
3Check the insulation.
4Open intake grille and check the filter.
Clean the filter by removing dirt or dust on
it.
5• If the filter is clogged, indoor pipe
temperature rises and discharging
pressure increases. Check if heat
exchanger is clogged by inspecting
discharging pressure.
• Clean the heat exchanger.
6Remove the blockage.
7Check refrigerant system during operation.
12Normal operation
Phenomena
Countermeasure
A flowing water sound or occasional hissing sound is heard. ■ T
hese sounds can be heard when refrigerant and/or water is (are) flowing in the indoor unit or refrigerant pipe, or when the refrigerant and/or water is (are) chugging.
Water does not heat or cool well.
■ Clean the filter of water piping. (Flow is reduced when the filter is dirty or clogged.)
■ Check the temperature adjustment and adjust the set temperature.
■ Make sure that there is plenty of space around the outdoor unit.
Water or vapour is emitted from the outdoor unit.
■ During cooling mode, water may form and drip from the cool pipes and joints.
■ During heating mode, water may form and drip from the heat exchanger of
outdoor unit.
■ During defrosting mode, water on the heat exchanger of outdoor unit evaporates and water vapour may be emitted.
The operation indicator does not appear in the remote controller display.
“
■ Turn on the power switch. “
” will appear in the remote controller display.
■ During external signal control, “ ” appears in the remote controller display
and FTC operation cannot be started or stopped using the remote controller.
” appears in the remote controller display.
When restarting the outdoor unit soon after stopping it,
it does not operate even though the ON/OFF button is
pressed.
■ Wait approximately 3 minutes. (Operation has stopped to protect the outdoor
unit.)
FTC operates without the ON/OFF button being pressed.
■ Is the on timer set?
Press the ON/OFF button to stop operation.
■ Is the FTC connected to a external signal?
Consult the concerned people who control the FTC.
■ Does “ ” appear in the remote controller display?
Consult the concerned people who control the FTC.
■ Has the auto recovery feature from power failures been set?
Press the ON/OFF button to stop operation.
FTC stops without the ON/OFF button being pressed.
■ Is the off timer set?
Press the ON/OFF button to restart operation.
■ Is the air conditioner connected to a central remote controller?
Consult the concerned people who control the FTC.
■ Does “ ” appear in the remote controller display?
Consult the concerned people who control the FTC.
Remote controller timer operation cannot be set.
■ Are timer settings invalid?
If the timer can be set, WEEKLY ,
remote controller display.
SIMPLE
, or
AUTO OFF
appears in the
“PLEASE WAIT” appears in the remote controller display.
■ The initial settings are being performed. Wait approximately 3 minutes.
■ If the remote controller is not only for FTC, change it.
An check code appears in the remote controller display.
■ The protection devices have operated to protect the FTC and outdoor unit.
■ Do not attempt to repair this equipment by yourself.
Turn off the power switch immediately and consult your dealer. Be sure to
provide the dealer with the model name and information that appeared in the
remote controller display.
• If the unit cannot be operated properly after test run, refer to the following table to find the cause.
Symptom
Wired remote controller
For about 2
minutes after
power-on
PLEASE WAIT
PLEASE WAIT
→ Check code
Display messages do not
appear even when operation
switch is turned ON (operation
lamp does not light up).
Subsequent to
about 2 minutes
after power-on
LED 1, 2 (PCB in outdoor unit)
After LED 1, 2 are lighted, LED 2 is
turned off, then only LED 1 is
lighted. (Correct operation)
Only LED 1 is lighted.
→
LED 1, 2 blink.
Only LED 1 is lighted.
→
LED 1 blinks twice,
LED 2 blinks once.
Cause
• For about 2 minutes following power-on,operation of the remote controller is not possible
due to system start-up. (Correct operation)
• Connector for the outdoor unit’s protection
device is not connected.
• Reverse or open phase wiring for the outdoor
unit’s power terminal block (L1, L2, L3)
• Incorrect wiring between FTC and outdoor
(incorrect polarity of S1, S2, S3)
• Remote controller wire short
Note: Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2, 3) provided on the FTC, refer to the following table.
LED1 (power for microprocessor)
Indicates whether control power is supplied. Make sure that this LED is always lit.
LED2 (power for remote controller)
Indicates whether power is supplied to the remote controller.
This LED lights only in the case of the FTC which is connected to the outdoor unit
refrigerant addresses “0”.
LED3 (communication between FTC and outdoor units)
Indicates state of communication between the FTC and outdoor units.
Make sure that this LED is always blinking.
OCH533D
38
Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller.
Cause
Diagnosis flow
Inspection method and
troubleshooting
Check the display time of “PLEASE WAIT”
after turning on the main power.
6 minutes
or more
How long is “PLEASE WAIT”
kept being displayed on the
remote controller?
2 minutes
or less
2 to 6
minutes
Are any check codes
displayed on the
remote controller?
Check the LED display of the
outdoor controller circuit board.
Are any check codes
displayed on the LED?
• “PLEASE WAIT”
• Normal
will be displayed
The start-up diagnosis will
during the start-up
be over in around 2 minutes.
diagnosis after turning
on the main power.
NO
YES
YES
• Miswiring of indoor/
outdoor connecting
wire
• Breaking of indoor/
outdoor connecting
wire (S3)
• Defective indoor
controller board
• Defective outdoor
controller circuit
board
NO
• Defective indoor
controller board
• Defective remote
controller
OCH533D
39
• Refer to “Self-diagnosis
action table” in order to
solve the trouble.
• In case of communication
errors, the display of
remote controller may not
match the LED display of
the outdoor unit.
Symptoms: Nothing is displayed on the remote controller. 1
Diagnosis flow
Cause
LED display of the indoor
controller board
LED1 :
LED2 :
LED3 :
Inspection method and
troubleshooting
Check the voltage between S1
and S2 on the terminal block
(TB4) of the indoor unit which
is used to connect the indoor
unit and the outdoor unit.
198 to 264 V AC?
YES
NO
Check the voltage among L(L3) and
N on the terminal block (TB1) of the
outdoor power circuit board.
198 to 264 V AC?
NO
• Troubles concerning
power supply
• Check the power wiring
to the outdoor unit.
• Check the breaker.
• Bad wiring of the
outdoor controller
board
• The fuses on the
outdoor controller
circuit board are
blown.
• Check the wiring of the
outdoor unit.
• Check if the wiring is bad.
Check if the fuses are blown.
The fuses on the outdoor
controller circuit board will
be blown when the indoor
/outdoor connecting wire
short-circuits.
• Bad wiring of the
outdoor controller
board
• The fuses on the
outdoor controller
circuit board are
blown.
• Check if miswiring, breaking
or poor contact is causing this
problem. Indoor/outdoor
connecting wire is polarized
3-core type. Connect the
indoor unit and the outdoor
unit by wiring each pair of
S1, S2 and S3 on the both
side of indoor/outdoor
terminal blocks.
• Defective indoor
controller board
• Replace the indoor
controller board.
YES
Check the voltage between S1
and S2 on the terminal block
(TB1) of the outdoor unit which
is used to connect the indoor
unit and the outdoor unit.
198 to 264 V AC?
YES
Check the voltage of indoor
controller board (CN2D).
12 to 16 V DC?
NO
YES
NO
Check the voltage of the unit after
removing the indoor power board
(CN2S).
12 to 16 V DC?
YES
• Miswiring, breaking
• Check if there is miswiring
or poor connection of or breaking of wire.
indoor/outdoor
connecting wire
NO
• Defective indoor
power board
OCH533D
40
• Replace the indoor
power board.
Symptoms: Nothing is displayed on the remote controller. 2
Diagnosis flow
Cause
LED display of the indoor
controller board
LED1 :
LED2 :
LED3 :
or
Inspection method and
troubleshooting
Check the voltage between S1 and S2 on the terminal block (TB4)
of the indoor unit which is used to connect the indoor unit and the
outdoor unit.
NO
198 to 264 V AC?
YES
Not lighting.
Check the status
of the indoor controller
board LED3 display.
Check the looseness or disconnection
of the indoor/outdoor connecting wire.
Blinking.
Are there looseness or
disconnection of the indoor/
outdoor connecting wire?
YES
NO
• Breaking or poor contact • Fix the breaking or poor
of the indoor/outdoor contact of the indoor/outdoor
connecting wire
connecting wire.
Check the refrigerant address of
the outdoor unit. (SW1-3 to 1-6)
NO
Is the refrigerant
address “0”?
YES
Check the LED display of the
outdoor unit after turning on the
main power again.
Not displayed.
Is anything displayed?
Displayed.
Is “EA” or “Eb”
displayed?
• Normal
Only the unit which
has the refrigerant
address “0” supplies
power to the remote
controller.
• Set the refrigerant
address to “0”. In case of
the multiple grouping
system, recheck the
refrigerant address again.
• Defective outdoor
controller circuit
board
• Replace the outdoor
controller circuit board.
• Defective outdoor
controller circuit
board
• Replace the outdoor
controller circuit board.
• Defective indoor
controller board
• Replace the indoor controller
board of the indoor unit which
does not operate.
NO
YES
Is “E8” displayed?
YES
NO
Can the unit be restarted?
Can all the indoor
unit be operated?
Check the voltage between S2
and S3 on the terminal block of
the outdoor unit.
17 to 28 V DC?
YES
• Not abnormal.
• Influence of
electromagnetic noise There may be the influence
of electromagnetic noise.
Check the transmission wire
and get rid of the causes.
NO
YES
OCH533D
NO
41
• Defective outdoor
power circuit board
• Replace the outdoor
power circuit board.
• Defective indoor
power board
• Replace the indoor
power board.
Symptoms: Nothing is displayed on the remote controller. 3
Diagnosis flow
Cause
LED display of the indoor
controller board
LED1 :
LED2 :
or
LED3 : —
Inspection method and
troubleshooting
Check the voltage of the
terminal block (TB6) of
the remote controller.
10 to 16 V DC?
YES
• Defective
remote controller
• Replace the
remote controller.
NO
Check the status
of the LED2.
Lighting
• Breaking or poor
• Check if there is breaking
contact of the remote or poor contact of the
controller wire
remote controller wire.
Check the voltage of the
terminal block connecting
the remote controller wire.
If it is not between 10 and
16 V DC, the indoor
controller board must be
defective.
Blinking
Check the status of the LED2
after disconnecting the remote
controller wire from the terminal
block of the indoor unit.
Check the status
of the LED2.
Lighting
• The remote controller • Check if the remote
wire short-circuits
controller wire is
short-circuited.
Blinking
• Defective indoor
controller board
OCH533D
42
• Replace the indoor
controller board.
11-4. HOW TO CHECK THE PARTS
PUHZ-SW75VHA.UKPUHZ-SW75VHAR3.UK
PUHZ-SW75VHAR4.UK
PUHZ-SW75VHA-BS.UK PUHZ-SW75VHAR3-BS.UK
PUHZ-SW75VHAR4-BS.UK
PUHZ-SW100VHA.UK PUHZ-SW100VHAR3.UKPUHZ-SW100VHAR4.UK
PUHZ-SW100VHA-BS.UK PUHZ-SW100VHAR3-BS.UKPUHZ-SW100VHAR4-BS.UK
PUHZ-SW100YHA.UK PUHZ-SW100YHAR1.UK PUHZ-SW100YHAR3.UKPUHZ-SW100YHAR4.UK
PUHZ-SW100YHA-BS.UK PUHZ-SW100YHAR1-BS.UK PUHZ-SW100YHAR3-BS.UKPUHZ-SW100YHAR4-BS.UK
PUHZ-SW120VHA.UK PUHZ-SW120VHAR3.UKPUHZ-SW120VHAR4.UK
PUHZ-SW120VHA-BS.UK PUHZ-SW120VHAR3-BS.UKPUHZ-SW120VHAR4-BS.UK
PUHZ-SW120YHA.UK PUHZ-SW120YHAR1.UK PUHZ-SW120YHAR3.UKPUHZ-SW120YHAR4.UK
PUHZ-SW120YHA-BS.UK PUHZ-SW120YHAR1-BS.UK PUHZ-SW120YHAR3-BS.UKPUHZ-SW120YHAR4-BS.UK
Check points
Parts name
Thermistor (TH3)
<Liquid>
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 10 to 30:)
Thermistor (TH4)
<Discharge>
Normal
TH4
Thermistor (TH6)
<2-phase pipe>
TH34
Thermistor (TH7)
<Ambient>
TH6
Abnormal
160 to 410 k"
TH3
Open or short
4.3 to 9.6 k"
TH7
Thermistor (TH8)
<Heat sink>
(SW75V, SW100/120Y)
39 to 105 k"
TH8
Thermistor (TH34)
<Comp. surface>
Fan motor
(MF1,MF2)
Refer to the next page.
Solenoid valve coil
<4-way valve>
(21S4)
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20:)
Normal
Abnormal
1435i150 "
Open or short
Motor for compressor Measure the resistance between the terminals with a tester.
(Winding temperature 20:)
U
(MC)
Normal
V
W
SW75V (R1/R2/R3)
0.88 "
Abnormal
SW75VR4
SW100/120V
SW100/120Y
0.95 "
0.19 "
0.30 "
Open or short
Linear expansion valve Disconnect the connector then measure the resistance with a tester.
(LEV-A/LEV-B)
(Winding temperature 20:)
M
Gray
2
Red
3
Yellow
4
Black
5
OCH533D
Normal
1
Orange
Gray - Black
Gray - Yellow
Gray - Red
46i3 "
43
Abnormal
Gray - Orange
Open or short
Check method of DC fan motor (fan motor/outdoor controller circuit board)
1 Notes
· High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service.
· Do not pull out the connector (CNF1, 2) for the motor with the power supply on.
(It causes trouble of the outdoor controller circuit board and fan motor.)
2 Self check
Symptom : The outdoor fan cannot rotate.
Fuse check
Check the fuse (F5) on outdoor
controller board.
Replace the outdoor controller board
(C.B) and the fan motor (MF1, 2).
Yes
Did the fuse blow?
No
Wiring contact check
Contact of fan motor connector (CNF1, 2)
Recover wiring.
Yes
Is there contact failure?
No
Power supply check (Remove the connector (CNF1, 2))
Measure the voltage in the outdoor controller circuit board.
TEST POINT 1 : VDC (between 1 (+) and 4 (−) of the fan connector):VDC 250–330 V DC
TEST POINT 2 : VCC (between 5 (+) and 4 (−) of the fan connector):VCC 15 V DC
Is the voltage normal?
Replace the fan motor.
Yes
Yes
No
OK
Check the operation of fan.
Replace the outdoor
controller board.
END
Fail
Replace the outdoor controller board.
OK
Check the operation.
END
Fail
Replace the fan motor.
11-5. HOW TO CHECK THE COMPONENTS
<HIGH PRESSURE SENSOR>
Vout (V)
MULTI
CONTROLLER BOARD
4.5
WHT
SENSOR
2.5
Vout BLU
2
BLK
1
63HS
0.5
2.5
OCH533D
5 V DC
3
5
PRESSURE
(MPa)
3-1 : 5 V (DC)
2-1 : Output Vout (DC)
44
MICRO
PROCESSOR
GND
<Thermistor feature chart>
50
Low temperature thermistors
• Thermistor <Liquid> (TH3)
• Thermistor <2-phase pipe> (TH6)
• Thermistor <Ambient> (TH7)
Resistance (k")
40
Thermistor R0 = 15 k" ± 3%
B constant = 3480 ± 2%
Rt =15exp{3480(
0:
10:
20:
25:
15
9.6
6.3
5.2
k"
k"
k"
k"
1
1
)}
–
273+t 273
30: 4.3 k"
40: 3.0 k"
30
20
10
0
-20 -10 0 10 20 30 40 50
Temperature (:)
200
Medium temperature thermistor
• Thermistor <Heat sink> (TH8)
(SW75V, SW100/120Y only)
Thermistor R50 = 17 k" ± 2%
B constant = 4150 ± 3%
Resistance (k")
150
1
1
Rt =17exp{4150( 273+t – 323)}
0: 180 k"
25: 50 k"
50: 17 k"
70:
8 k"
90:
4 k"
100
50
0
• Thermistor <Discharge> (TH4)
• Thermistor <Comp. surface> (TH34)
Resistance (k")
1
1
Rt =7.465exp{4057( 273+t – 393)}
k"
k"
k"
k"
k"
300
200
100
0
OCH533D
125
400
Thermistor R120 = 7.465 k" ± 2%
B constant = 4057 ± 2%
70:
34
80:
24
90: 17.5
100: 13.0
110: 9.8
50
75
100
Temperature (:)
500
High temperature thermistor
20: 250 k"
30: 160 k"
40: 104 k"
50: 70 k"
60: 48 k"
25
45
25
50
75
Temperature (:)
100
120
Linear expansion valve
(1) Operation summary of the linear expansion valve
• Linear expansion valve opens/closes through stepping motor after receiving the pulse signal from the outdoor controller board.
• Valve position can be changed in proportion to the number of pulse signal.
<Connection between the outdoor controller board and the linear expansion valve>
Outdoor controller board
12 V DC
Gray
LEV
1
Drive circuit
3
6
Orange 2
[4
3
[3
[2
Yellow 4
[2
[1
Black
5
[1
[4
M
2
1
5
4
[3
Red
Connector LEV-A
LEV-B
LEV-C
<Output pulse signal and the valve operation>
Output
(Phase)
Output
1
2
3
5
4
6
7
8
[1
ON ON OFF OFF OFF OFF OFF ON
[2
OFF ON
[3
OFF OFF OFF ON
[4
OFF OFF OFF OFF OFF ON ON ON
ON ON OFF OFF OFF OFF
ON ON OFF OFF
(2) Linear expansion valve operation
Valve position (capacity)
C
Close
Opening a valve : 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 8
Closing a valve : 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 1
The output pulse shifts in above order.
· When linear expansion valve operation stops, all output phases
become OFF.
· When the power is turned on, 700 pulse closing valve signal will
be sent till it goes to A point in order to define the valve position.
(The pulse signal is being sent for about 20 seconds.)
When the valve moves smoothly, there is no sound or vibration
occurring from the linear expansion valve : however, when the
pulse number moves from B to A or when the valve is locked,
more sound can be heard.
No sound is heard when the pulse number moves from B to A in
case coil is burnt out or motor is locked by open-phase.
Open
· Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion
valve.
500 pulse
Opening a valve
all the way
A
B
Pulse number
Extra tightening (about 32 pulse)
OCH533D
46
(3) How to attach and detach the coil of linear expansion valve
<Composition>
Linear expansion valve is separable into the main body and the coil as shown in the diagram below.
Stopper
Main body
Coil
Lead wire
<How to detach the coil>
Hold the lower part of the main body (shown as A) firmly so that
the main body does not move and detach the coil by pulling it
upward.
Be sure to detach the coil holding main body firmly. Otherwise
pipes can bend due to stress.
A
<How to attach the coil>
Hold the lower part of the main body (shown as A) firmly so that
the main body does not move and attach the coil by inserting it
downward into the main body. Then securely attach the coil stopper to main body. (At this time, be careful that stress is not added
to lead wire and main body is not wound by lead wire.) If the
stopper is not firmly attached to main body, coil may be detached
from the main body and that can cause defective operation of linear expansion valve.
To prevent piping stress, be sure to attach the coil holding the
main body of linear expansion valve firmly. Otherwise pipe may
break.
Be sure to attach
the stopper.
A
OCH533D
47
PUHZ-SW75VHA(-BS).UK
PUHZ-SW100VHAR3(-BS).UK
PUHZ-SW100YHA(-BS).UK
PUHZ-SW100YHAR3(-BS).UK
PUHZ-SW75VHAR3(-BS).UK
PUHZ-SW120VHA(-BS).UK
PUHZ-SW120YHA(-BS).UK
PUHZ-SW120YHAR1(-BS).UK
VCC (TEST POINT 2)
(voltage between pins of
C6B): 15 V DC
PUHZ-SW100VHA(-BS).UK
PUHZ-SW120VHAR3(-BS).UK
PUHZ-SW100YHAR1(-BS).UK
PUHZ-SW120YHAR3(-BS).UK
CNDC
280–380 V DC Connect
from outdoor power circuit
board for VHA, connect
from noise filter board for
YHA(CNDC)
}
11-6. TEST POINT DIAGRAM
Outdoor controller circuit board
+
–
VDC (TEST POINT 1)
(voltage between pins of C5E)
: 250–380 V DC
VSP (TEST POINT 3)
CNS
(voltage between pins of
C5A, C5B): 0 V DC (when
stopped), 1–6.5 V DC
(when operated)
(Indoor/outdoor unit
connecting wire)
VFG (TEST POINT 4)
(voltage between right
pins of PC5C and PC5D,
pin 3 and pin 4)
63H
High pressure switch
CNAC
TH6
2–4: Power supply for
outdoor controller circuit
board (230 V AC)
1–3: Power supply for
indoor and outdoor unit
connection wire (230 V
AC)
Thermistor
<2-phase pipe>
TH7
Thermistor<Ambient>
TH3
Thermistor
<Liquid>
CN2
TH4
Connect to the outdoor
power circuit board (CN2)
1–5: Power circuit board
→ Transmitting signal to
the controller circuit board
(0–5 V DC)
2–5: Zero cross signal
(0-5V DC)
3–4: Not used
(SW75V,100/120Y)
18 V DC (SW100/120V)
6–5: 16 V DC
7–5: 16 V DC
Thermistor <Discharge>
63HS
High pressure sensor
TH34
Thermistor
<Comp. surface>
LEV-A,-B
Linear expansion valve
[5: – 1,2,6,7: + ]
21S4
63L
Low pressure switch
(SW100/120)
4-way valve
CN4
SW4
Transmission to outdoor power circuit
board (CN4)
Test operation
SW5
Function switch,
Model select
SW6
Model select
SW1
Manual defrost, detect
history record reset,
refrigerant address
CN52C
(Connect to the outdoor noise
filter circuit board (SW75V)/
the outdoor power circuit
board (SW100/120V))
Only for SW·VHA
OCH533D
CN51
External signal output
• Compressor operating signal
• Abnormal signal
SW9
Function switch
CNDM
SWP
Pump down
1–2: Input of low-level sound priority mode
1–3: Input of external contact point
48
SW7
Demand control setting
Outdoor controller circuit board
PUHZ-SW75VHAR4.UK
PUHZ-SW100VHAR4.UK
PUHZ-SW75VHAR4-BS.UK PUHZ-SW100VHAR4-BS.UK
PUHZ-SW100YHAR4.UK
PUHZ-SW120YHAR4.UK
PUHZ-SW100YHAR4-BS.UK PUHZ-SW120YHAR4-BS.UK
CNDC
280–380 V DC Connect from outdoor
power circuit board for VHA, connect
from noise filter board for YHA(CNDC)
}
<CAUTION> TEST POINT1 is high voltage.
PUHZ-SW120VHAR4.UK
PUHZ-SW120VHAR4-BS.UK
–
CNS
+
VDC (TEST POINT 1)
(voltage between pins of C5E)
: 250–380 V DC
VSP (TEST POINT 3)
(Indoor/outdoor unit
connecting wire)
(voltage between pins of
C5A, C5B): 0 V DC (when
stopped), 1–6.5 V DC
(when operated)
63H
High pressure switch
VFG (TEST POINT 4)
(voltage between right
pins of PC5C and PC5D,
pin 3 and pin 4)
VCC (TEST POINT 2)
(voltage between pins of
C821): 15 V DC
TH6
Thermistor
<2-phase pipe>
CNAC
TH7
2–4: Power supply for
outdoor controller
circuit board (230
V AC)
1–3: Power supply
for indoor and
outdoor unit connection wire (230
CN2 V AC)
Connect to the outdoor
power circuit board (CN2)
1–5: Power circuit board →
Transmitting signal to the
controller circuit board
(0–5 V DC)
2–5: Zero cross signal
(0-5V DC)
3–4: Not used.
(SW75V,100/120Y)
18 V DC (SW100/120V)
6–5: 16 V DC
7–5: 16 V DC
Thermistor<Ambient>
TH3
Thermistor
<Liquid>
TH4
Thermistor <Discharge>
63L
Low pressure switch
(SW100/120)
63HS
High pressure sensor
TH34
Thermistor
<Comp. surface>
LEV-A,-B
Linear expansion valve
[5: – 1,2,6,7: + ]
21S4
SW4
4-way valve
Test operation
CN4
Transmission to outdoor power circuit
board (CN4)
SW5
Function switch,
Model select
SW6
Model select
SW1
Manual defrost, detect
history record reset,
refrigerant address
SW9
CN52C
Function switch
(Connect to the outdoor noise
filter circuit board (SW75V)/
the outdoor power circuit
board (SW100/120V))
Only for SW·VHA
OCH533D
CNDM
SWP
Pump down
1–2: Input of low-level sound priority mode
1–3: Input of external contact point
49
SW7
Demand control setting
Outdoor noise filter circuit board
PUHZ-SW75VHA.UK
PUHZ-SW75VHA-BS.UK
PUHZ-SW75VHAR3.UK PUHZ-SW75VHAR3-BS.UK
EI, E2
Connect to the earth
LI, NI
Voltage of 230
V AC is input.
(Connect to the
terminal block
(TB1))
E3
Connect to
the earth
CNAC1, CNAC2
230 V AC
(Connect to the
outdoor controller
circuit board
(CNAC))
CN5
Primary current
(Connect to the
outdoor power
circuit board
(CN5))
CN52C
52C relay signal
(Connect to the
outdoor controller
circuit board
(CN52C))
LO, NO
Voltage of 230 V AC is output.
(Connect ACL)
OCH533D
50
Outdoor noise filter circuit board
PUHZ-SW100YHA.UK
PUHZ-SW120YHA.UK
PUHZ-SW100YHA-BS.UK
PUHZ-SW120YHA-BS.UK
PUHZ-SW100YHAR1.UK
PUHZ-SW100YHAR3.UK
PUHZ-SW100YHAR1-BS.UK PUHZ-SW100YHAR3-BS.UK
PUHZ-SW120YHAR1.UK
PUHZ-SW120YHAR3.UK
PUHZ-SW120YHAR1-BS.UK PUHZ-SW120YHAR3-BS.UK
LI1, LI2, LI3, NI
POWER SUPPLY
LI1-LI2/LI-LI3/LI3-LI1 : 400 V AC input
LI1-NI/LI2-NI/LI3-NI : 230 V AC input
(Connect to the terminal block (TB1))
GD1
Connect to the earth
GD3
Connect to the earth
CNAC2
230 V AC
(Connect to the
outdoor controller
circuit board (CNAC))
CNDC
(Connect to the
outdoor controller
circuit board
(CNDC))
CNCT
Primary current
(Connect to the outdoor power circuit
board (CN5))
CNL
Connect to the ACL4
OCH533D
NO
Connect to the
outdoor converter
circuit board(N-IN)
LO1, LO2, LO3
POWER SUPPLY
LO1-LO2/LO2-LO3/LO3-LO1 : 400 V AC OUTPUT
(Connect to the outdoor converter circuit board (L1-IN), ACL2 and ACL3)
51
Outdoor noise filter circuit board
PUHZ-SW100YHAR4.UK
PUHZ-SW120YHAR4.UK
PUHZ-SW100YHAR4-BS.UK
PUHZ-SW120YHAR4-BS.UK
LI1, LI2, LI3, NI
POWER SUPPLY
LI1-LI2/LI-LI3/LI3-LI1 : 400 V AC input
LI1-NI/LI2-NI/LI3-NI : 230 V AC input
(Connect to the terminal block (TB1))
PCB maker trade mark
lot number
UL mark
GD1
Connect to the earth
CNAC1, CNAC2
230 V AC
GD3
(Connect to the
outdoor controller
circuit board
(CNAC))
Connect to the earth
CNDC
(Connect to the
outdoor controller
circuit board
(CNDC))
CNCT
Primary current
(Connect to the outdoor
power circuit board
(CN5))
CNL
Connect to the ACL4
LO1, LO2, LO3
POWER SUPPLY
LO1-LO2/LO2-LO3/LO3-LO1: 400 V AC OUTPUT
(Connect to the outdoor power circuit board (TB1-L1, L2, L3))
OCH533D
52
Outdoor power circuit board
PUHZ-SW75VHA.UK
PUHZ-SW75VHAR3.UK
PUHZ-SW75VHA-BS.UK
PUHZ-SW75VHAR3-BS.UK
Brief Check of DIP-IPM and DIP-PFC
Usually, they are in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.).
If they are short-circuited, it means that they are broken.
1. Check of DIP-IPM
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
2. Check of DIP-PFC
P1 - L , P1 - N , L - N1 , N - N1
Note:The marks L , N , N1 , N2 , P1 , P2 , U , V and W shown
in the diagram are not actually printed on the board.
R, S
Connect to the ACL
230 V AC
U, V, W
Connect to the compressor (MC)
Voltage among phases: 5 to 180 V AC
DIP-PFC
P1
LD1-LD2
280–380 V DC
Connect to
the outdoor
controller
circuit board
(CNDC)
N
N2
L
W
N1
V
N1
U
LD9
Connect to
the earth
P2
DIP-IPM
CN2
Connect to the outdoor controller circuit board (CN2)
1–5:Outdoor power circuit board → Transmitting signal
to the outdoor controller circuit board (0–5 V DC)
2–5: Zero cross signal (0–5 V DC)
3–4: Not used
1, 2, 6, 7 : +
6–5: 16V DC
5:–
7–5: 16 V DC
[
OCH533D
CN3
Thermistor
<Heat sink>
(TH8)
]
53
CN4
Connect from the
outdoor controller
circuit board
(CN4)
CN5
Primary current detection
(Connect to the outdoor
noise filter circuit board
(CN5))
Outdoor power circuit board
PUHZ-SW75VHAR4.UK
PUHZ-SW75VHAR4-BS.UK
Brief Check of DIP-IPM and D.B.
Usually, they are in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.). If they
are short-circuited, it means that they are broken.
1. Check of DIP-IPM
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
2. Check of IGBT (Q600)
DB3 + - DB3 −
3. Check of diode bridge
P2 - L , P2 - N , N2 - L , N2 - N
Note: The marks N1 , N2 , P1 , P2 , U , V , W , L , N , + and −
shown in the diagram are not actually printed on the board.
U, V, W
Connect to the
compressor (MC)
DIP-IPM
Voltage among phases:
IGBT (Q600)
10–180 V AC
CNAC1, CNAC
Connect to the outdoor controller circuit
board (230 V AC)
R/L1, S/N1
Voltage of 230 V AC
EI, E3
is input. (Connect to the Connect to
terminal block (TB1))
the earth
P2
U
V
W
N2
CN4
Connect to the
CN6
outdoor controller Thermistor (TH8)
circuit board (CN4) <Heat sink>
N1
N
N
P1
+
P1
L
L
−
N1
E4
Connect to the
earth
CNDC
Diode bridge TBL2, TBL4
280–380 V DC
(DB1, DB2) Connect to ACL
Connect to the outdoor
controller circuit board
(CNDC)
CN2
Connect to the outdoor controller circuit board (CN2)
1–5: Outdoor power circuit board → Transmitting signal to the outdoor controller circuit board (0–5 V
DC)
2–5: Zero cross signal (0–5 V DC)
3–4: 15 V DC 1, 2, 6, 7 : +
6–5: 16 V DC
5:–
7–5: 16 V DC
[
OCH533D
54
]
Outdoor power circuit board
PUHZ-SW100VHA.UK
PUHZ-SW100VHAR3.UK
PUHZ-SW120VHA.UK
PUHZ-SW120VHAR3.UK
PUHZ-SW100VHA-BS.UK
PUHZ-SW100VHAR3-BS.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW120VHAR3-BS.UK
Note: The marks R , S , L1 , L2 , P , N1 , U , V and W
shown in the diagram are not actually printed on the board.
CN2
Connect to the outdoor controller circuit board (CN2)
1–5:Transmitting signal to outdoor controller circuit
board (0–5 V DC)
2–5: Zero cross signal (0–5 V DC)
3–4: 18 V DC
6–5: 16 V DC
7–5: 16 V DC
CN52C
CNDC
CN4
Connect to the outdoor
controller circuit board (CN4)
N2
Power module
Brief Check of POWER MODULE
Usually, they are in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.).
If they are short-circuited, it means that they are broken.
1. Check of POWER MODULE
1 Check of DIODE circuit
R - L1 , S - L1 , R - N1 , S - N1
2 Check of IGBT circuit
L2 - N1
3 Check of INVERTER circuit
P - U , P - V , P - W , N1 - U , N1 - V , N1 - W
Connect to the smoothing
capacitor CB −
52C driving signal
Connect to the outdoor
controller circuit board
(CN52C)
S
W
U/V/W
V
Connect to the compressor (MC) Voltage among
phases: 10–180 V AC
OCH533D
U
P2
L2
P
N1
280–380 V DC (1+, 3−)
Connect to the outdoor
controller circuit board
E2, E3
(CNDC)
Connect to the earth
R
L1
DCL1, DCL2
EI, E4
Connect to the smooth- Connect to DCL Connect to the
ing capacitor CB +
earth
55
CNAC1, CNAC2
230 V AC
Connect to the outdoor controller circuit
board (CNAC)
NI, LI
Voltage of 230 V AC is
input (Connect to the terminal block (TB1))
Outdoor power circuit board
PUHZ-SW100VHAR4.UK
PUHZ-SW120VHAR4.UK
PUHZ-SW100VHAR4-BS.UK
PUHZ-SW120VHAR4-BS.UK
Brief Check of POWER MODULE
Usually, they are in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.).
If they are short-circuited, it means that they are broken.
1. Check of POWER MODULE
1 Check of DIODE circuit
R - L1 , S - L1 , R - N1 , S - N1
2 Check of IGBT circuit
L2 - N1
3 Check of INVERTER circuit
P - U , P - V , P - W , N1 - U , N1 - V , N1 - W
Note: The marks R , S , L1 , L2 , P , N1 , U , V and W
shown in the diagram are not actually printed on the board.
CN4
Connect to the outdoor
controller circuit board (CN4)
CN2
Connect to the outdoor controller circuit board (CN2)
1–5:Transmitting signal to outdoor controller circuit
board (0–5 V DC)
2–5: Zero cross signal (0–5 V DC)
3–4: 18 V DC
6–5: 16 V DC
7–5: 16 V DC
CN52C
CNDC
52C driving signal
Connect to the outdoor
controller circuit board
(CN52C)
Power module
S
W
U/V/W
Connect to the compressor (MC) Voltage among
phases: 10–180 V AC
OCH533D
V
U
L2
P
280–380 V DC (1+, 3−)
Connect to the outdoor
controller circuit board
E2, E3
(CNDC)
Connect to the earth
R
N1 L1
DCL1, DCL2
Connect to DCL
EI, E4
Connect to the
earth
56
CNAC1, CNAC2
230 V AC
Connect to the outdoor controller circuit
board (CNAC)
NI, LI
Voltage of 230 V AC is
input (Connect to the terminal block (TB1))
Outdoor power circuit board
PUHZ-SW100YHA.UK
PUHZ-SW120YHA.UK
PUHZ-SW100YHA-BS.UK
PUHZ-SW120YHA-BS.UK
Brief Check of POWER MODULE
Usually, they are in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.).
If they are short-circuited, it means that they are broken.
1. Check of DIODE MODULE
L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1
2. Check of DIP-IPM
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
Note: The marks L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram are not actually printed on the board.
TB-U, TB-V, TB-W
TB-N
Connect to the compressor (MC)
Voltage among phases:
10–400 V AC
Connect to the CK capacitor
Diode module
N2
W
V
U
P2
DIP-IPM
P1
L1
L2
L3
N1
TAB connector
on X52CA
Connect to the
RS resistor
CN4
Connect to the
outdoor controller
circuit board (CN4)
CN5
Detection of primary
current (Connect to
the outdoor noise filter
circuit board (CNCT))
CN2
Connect to the outdoor controller circuit board (CN2)
1–5: Power circuit board → Transmitting
signal to the controller board (0–5 V DC)
2–5: Zero cross signal (0–5 V DC)
3–4: Not used
6–5: 16 V DC
7–5: 16V DC
[ 5 : − 1, 2, 6, 7 : + ]
OCH533D
CN7
Connect to the
outdoor converter
circuit board (CN7)
CN6
Thermistor
<Heat sink> (TH8)
57
TB-L1, TB-L2, TB-L3
Connect to the outdoor
converter circuit board
(L1-OU, L2-OU, L3-OU)
400 V AC
Outdoor power circuit board
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PUHZ-SW120YHAR3.UK
PUHZ-SW120YHAR4.UK
PUHZ-SW100YHAR1-BS.UK
PUHZ-SW100YHAR3-BS.UK
PUHZ-SW100YHAR4-BS.UK
PUHZ-SW120YHAR1-BS.UK
PUHZ-SW120YHAR3-BS.UK
PUHZ-SW120YHAR4-BS.UK
Brief Check of POWER MODULE
Usually, they are in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.).
If they are short-circuited, it means that they are broken.
1. Check of DIODE MODULE
L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1
2. Check of DIP-IPM
P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W
Note: The marks L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W
shown in the diagram are not actually printed on the board.
TB-U, TB-V, TB-W
TB-N
Connect to the compressor (MC)
Voltage among phases:
10–400 V AC
Connect to the CK capacitor
Diode module
N2
W
V
U
P2
DIP-IPM
TAB connector
on X52CA
P1
L1
L2
L3
N1
Connect to the
RS resistor
TB-L1,
TB-L2,
TB-L3
Connect to the
outdoor converter
circuit board
(L1-OU, L2-OU,
L3-OU)
400 V AC
CN5
CN4
Connect to the
outdoor controller
circuit board (CN4)
Detection of primary
current (Connect to
the outdoor noise filter
circuit board (CNCT))
CN2
Connect to the outdoor controller circuit board (CN2)
1–5: Power circuit board → Transmitting
signal to the controller board (0–5 V DC)
2–5: Zero cross signal (0–5 V DC)
3–4: Not used
6–5: 16 V DC
7–5: 16 V DC
[ 5 : − 1, 2, 6, 7 : + ]
OCH533D
CN7
Connect to the
outdoor converter
circuit board (CN7)
CN6
Thermistor
<Heat sink> (TH8)
58
L3OUT-L3IN
Lead connect
Outdoor converter circuit board
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PUHZ-SW120YHA-BS.UK
PUHZ-SW120YHAR1-BS.UK
CK-OU
L1-IN, N-IN
Connect to the CK capacitor
Connect to the noise filter
circuit board (LO1, NO)
PUHZ-SW100YHAR3.UK
PUHZ-SW100YHAR3-BS.UK
PUHZ-SW120YHAR3.UK
PUHZ-SW120YHAR3-BS.UK
L1-A1
Connect to the ACL1
CN7
Connect to the
outdoor power
circuit board
(CN7)
L1-OU, L2-OU, L3-OU
L1-A2, L2-A2, L3-A2
Connect to the ACL1, ACL2, ACL3
OCH533D
59
Connect to the outdoor power circuit board
(TB-L1, L2, L3)
Outdoor converter circuit board
PUHZ-SW100YHAR4.UK
PUHZ-SW100YHAR4-BS.UK
CK-OU
PUHZ-SW120YHAR4.UK
PUHZ-SW120YHAR4-BS.UK
L1-IN, N-IN
Connect to the CK capacitor
L1-A1
Connect to the noise filter
circuit board (LO1, NO)
Connect to the ACL1
CN7
Connect to the
outdoor power
circuit board
(CN7)
L1-A2, L2-A2, L3-A2
Connect to the ACL1, ACL2, ACL3
OCH533D
L1-OU, L2-OU, L3-OU
Connect to the outdoor power circuit board
(TB-L1, L2, L3)
60
11-7. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
(1) Function of switches
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PUHZ-SW100VHA-BS.UK
PUHZ-SW100VHAR3-BS.UK
PUHZ-SW100YHA.UK
PUHZ-SW100YHAR1.UK
PUHZ-SW100YHAR3.UK
PUHZ-SW100YHA-BS.UK
PUHZ-SW100YHAR1-BS.UKPUHZ-SW100YHAR3-BS.UK
PUHZ-SW120VHA.UK
PUHZ-SW120VHAR3.UK
PUHZ-SW120VHA-BS.UKPUHZ-SW120VHAR3-BS.UK
PUHZ-SW120YHA.UK
PUHZ-SW120YHAR1.UK
PUHZ-SW120YHAR3.UK
PUHZ-SW120YHA-BS.UK
PUHZ-SW120YHAR1-BS.UKPUHZ-SW120YHAR3-BS.UK
The black square ( ) indicates a switch position.
Type of
Switch No.
Switch
Action by the switch operation
ON
OFF
Function
1
Manual defrost *1
2
Abnormal history clear
Start
Clear
3
SW1
4
DIP
switch
5
Refrigerant address
setting
6
ON
1 2 3 4 5 6
0
ON
1 2 3 4 5 6
1
ON
1 2 3 4 5 6
2
ON
1 2 3 4 5 6
3
1 2 3 4 5 6
4
1 2 3 4 5 6
5
When power supply ON
—
2
No function
—
—
—
Pump down
Start
Normal
Under suspension
1
No function
—
—
—
2
Power failure
automatic recovery *2
Auto recovery
No auto recovery
When power supply ON
3,4,5
No function
—
—
—
6
model select
3
4
5
SW8
Off or operating
ON
—
2
DIP
switch
Normal
ON
—
1
SW7
*4
When compressor is working
in heating operation. *1
No function
SWP
SW5
Normal
1
SW4
Push
switch
Effective timing
Following SW5-6 reference
SW7-1
OFF
ON
OFF
Setting of demand
control
*3
SW7-2
OFF
OFF
ON
Power consumption
(Demand switch ON)
0% (Operation stop)
50%
75%
—
—
—
No function
Always
SW7
4
OFF
OFF
ON
Breaker size setting
*Only SW75
Breaker size
Both for indoor unit Only for outdoor unit
5 and outdoor unit
25A (Default)
20A
OFF
16A
20A
ON
16A
—
ON
When power supply ON
6
Defrost setting
For high humidity
Normal
1
Use of existing pipe
Used
Not used
Always
Always
2
No function
—
—
—
3
No function
—
—
—
1
No function
—
—
—
SW9
2
Function switch
Valid
Normal
Always
No function
—
—
—
SW6
3,4
1
2
3
4
5
6
7
8
6
SW5
MODEL
Model select
SW5-6
SW6
75V
ON
OFF
100V
ON
OFF
120V
ON
OFF
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ON
OFF
ON
OFF
ON
OFF
1 2 3 4 5 6
1 2 3 4 5 6
MODEL
SW5-6
SW6
100Y
ON
OFF
120Y
ON
OFF
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ON
OFF
ON
OFF
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4 5 6
Continue to the next page
OCH533D
61
*1 Manual defrost should be done as follows.
1Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
2Manual defrost will start by the above operation 1 if all these conditions written below are satisfied.
• Heat mode setting
• 10 minutes have passed since compressor started operating or previous compulsory defrosting finished.
• Pipe temperature is less than or equal to 8:.
Manual defrost will finish if certain conditions are satisfied.
Manual defrost can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.
After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This depends on the service conditions.
*2 ‘Power failure automatic recovery’ can be set by either remote controller or this DIP SW. If one of them is set to ON,
‘Auto recovery’ activates. Please set “Auto recovery” basically by remote controller because all units do not have DIP SW.
Please refer to the indoor unit installation manual.
*3 SW7-1,2 are used for demand control. SW7-1,2 are effective only at the demand control.
(Refer to the next page : Special function (b))
*4 Please do not use SW7-3~6 usually. Trouble might be caused by the usage condition.
Special function
(a) Low-level sound priority mode (Local wiring) only for air-conditioners
Unit enters into Low-level sound priority mode by external signal input setting.
Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual.
Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional contactor for demand
input located on the outdoor controller board enables to control compressor operation frequency.
Note: The performance depends on the load of conditioned outdoor temperature.
How to wire
<Low-level sound priority mode circuit>
Insulate this point securely as
this is not used.
Purchased locally
Relay
supply
Adaptor for external
signal input
(PAC-SC36NA)
Red 3
Brown 2
Orange 1
~ SW1
X
X
SW1 : Switch
X : Relay (Contact spec. : DC1mA)
Outdoor unit
controller board
3
2
1
CNDM
Max. 10 m including local wiring
1) Make the circuit as shown above with Adaptor for external signal input (PAC-SC36NA).
2) Turn SW1 to on for Low-level sound priority mode.
Turn SW1 to off to release Low-level sound priority mode and normal operation.
OCH533D
62
PUHZ-SW75VHAR4.UK
PUHZ-SW100VHAR4.UKPUHZ-SW100YHAR4.UK
PUHZ-SW75VHAR4-BS.UK
PUHZ-SW100VHAR4-BS.UKPUHZ-SW100YHAR4-BS.UK
PUHZ-SW120VHAR4.UKPUHZ-SW120YHAR4.UK
PUHZ-SW120VHAR4-BS.UKPUHZ-SW120YHAR4-BS.UK
Type of
Switch No.
Switch
Action by the switch operation
ON
OFF
Function
1
Manual defrost *1
2
Abnormal history clear
Start
Clear
3
SW1
4
DIP
switch
5
Refrigerant address
setting
6
SW8
ON
1 2 3 4 5 6
0
ON
1 2 3 4 5 6
1
ON
1 2 3 4 5 6
2
ON
1 2 3 4 5 6
3
1 2 3 4 5 6
4
1 2 3 4 5 6
5
When power supply ON
—
—
—
—
—
—
Pump down
Start
Normal
Under suspension
1
No function
—
—
—
2
Power failure
automatic recovery *2
Auto recovery
No auto recovery
When power supply ON
3,4,5
No function
—
—
—
model select
2
Mode select *4
No function
3
No function
4
Following SW5-6 reference
No function
Low noise mode
—
—
—
—
Breaker size setting
(Only SW75)
Breaker size
Both for indoor unit Only for outdoor unit
5 and outdoor unit
25A (Default)
20A
OFF
16A
20A
ON
16A
—
ON
Always
—
—
SW7
4
OFF
OFF
ON
When power supply ON
6
Defrost setting
For high humidity
Normal
1
Use of existing pipe
Used
Not used
Always
Always
2
No function
—
—
—
3
No function
—
—
—
1
No function
—
—
—
Normal
Always
—
—
SW9
2
Function switch
Valid
No function
—
SW6
3,4
1
2
3
4
5
6
7
8
6
SW5
Off or operating
ON
No function
5
DIP
switch
Normal
ON
No function
6
1
SW7*3
When compressor is working
in heating operation. *1
2
SWP
SW5
Normal
1
SW4
Push
switch
Effective timing
MODEL
Model select
SW5-6
SW6
75V
ON
OFF
100V
ON
OFF
120V
ON
OFF
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ON
OFF
ON
OFF
ON
OFF
1 2 3 4 5 6
1 2 3 4 5 6
MODEL
SW5-6
SW6
100Y
ON
OFF
120Y
ON
OFF
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ON
OFF
ON
OFF
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4 5 6
*1 Manual defrost should be done as follows.
1Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
2Manual defrost will start by the above operation 1 if all these conditions written below are satisfied.
• Heat mode setting
• 10 minutes have passed since compressor started operating or previous manual defrost is finished.
• Pipe temperature is less than or equal to 8:.
Manual defrost will finish if certain conditions are satisfied.
Manual defrost can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.
After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This depends on the service conditions.
*2 ‘Power failure automatic recovery’ can be set by either remote controller or this DIP SW. If one of them is set to ON,
‘Auto recovery’ activates. Please set “Auto recovery” basically by remote controller because all units do not have DIP SW.
Please refer to the indoor unit installation manual.
*3 Please do not use SW7-3 to 6 usually. Trouble might be caused by the usage condition.
*4 It is effective only in case of external input. (Local wiring is necessary. Refer to the next page: Special function.)
OCH533D
63
Special function
(a) Low-level sound priority mode (Local wiring)
By performing the following modification, operation noise of the outdoor unit can be reduced by about 3-4 dB.
The low noise mode will be activated when a commercially available timer or the contact input of an ON/OFF switch is added to
the CNDM connector (option) on the control board of the outdoor unit.
•The ability varies according to the outdoor temperature and conditions, etc.
1Complete the circuit as shown when using the external input adapter (PAC-SC36NA-E). (Option)
2SW7-1 (Outdoor unit control board): OFF
3SW1 ON: Low noise mode
SW1 OFF: Normal operation
A
C
X
F
Orange
X
Brown
SW1
B
OCH533D
D
Red
CNDM
1
3
ACircuit diagram example
(low noise mode)
BOn-site arrangement
CExternal input adapter
(PAC-SC36NA-E)
E
64
X: Relay
DOutdoor unit control board
EMaximum 10 m
FPower supply for relay
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<Display function of inspection for outdoor unit>
The blinking patterns of both LED1 (green) and LED2 (red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part “A-Control Service Tool (PAC-SK52ST)” to connector CNM on
outdoor controller board.
[Display]
(1)Normal condition
Unit condition
When the power is turned on
When unit stops
When compressor is warming up
When unit operates
Outdoor controller board
A-Control Service Tool
LED1 (Green)
LED2 (Red)
Check code
Lighted
Lighted
Lighted
Lighted
Lighted
Not lighted
Not lighted
Lighted
00, etc.
08, etc.
C5, H7, etc.
Indication of the display
Alternately blinking display
Operation mode
(2)Abnormal condition
Indication
Outdoor controller board
LED1 (Green) LED2 (Red)
Error
Contents
1 blinking 2 blinking Connector(63L) is open.
Connector(63H) is open.
2 connectors are open.
2 blinking 1 blinking Miswiring of I/F or FTC or outdoor unit
Check
code
*1
Inspection method
F3
F5
F9
—
1Check if connector (63H or 63L) on the outdoor controller
board is not disconnected.
2Check continuity of pressure switch (63H or 63L) by tester.
E0
1Check if connecting wire of I/F or FTC unit or remote controller
is connected correctly.
2Check if noise entered into transmission wire of remote
controller.
3Re-check error by turning off power, and on again.
1Check if I/F or FTC or outdoor connecting wire is connected
correctly.
— 2Check if 2 or more I/F or FTC units are connected to
outdoor unit.
3Check if noise entered into I/F or FTC or outdoor connecting
wire or power supply.
Startup time over
— 4Re-check error by turning off power, and on again.
2 blinking I/F or FTC or outdoor unit communication E6 1Check if I/F or FTC or outdoor connecting wire is connected
error (signal receiving error) is detected by
correctly.
FTC unit.
if noise entered into I/F or FTC or outdoor connecting
2Check
I/F or FTC or outdoor unit communication
—
wire or power supply.
error (signal receiving error) is detected by
(E8)
outdoor unit.
3Check if noise entered into I/F or FTC or outdoor controller
—
I/F or FTC or outdoor unit communication
board.
error (transmitting error) is detected by
(E9) 4Re-check error by turning off power, and on again.
outdoor unit.
connecting wire, excessive number of
indoor units (2 units or more)
Miswiring of I/F or FTC or outdoor unit
connecting wire (converse wiring or
disconnection)
3 blinking Remote controller signal receiving
error is detected by remote controller.
Remote controller transmitting error
is detected by remote controller.
E3
Remote controller signal receiving
error is detected by I/F or FTC unit.
E4
Remote controller transmitting error
is detected by I/F or FTC unit.
E5
4 blinking Check code is not defined.
EF
*1 Check code displayed on remote controller
*2 Refer to Technical manual of ATW, I/F, FTC.
OCH533D
1Check if noise entered into transmission wire of remote
controller.
2Check if noise entered into I/F or FTC or outdoor connecting
wire.
3Re-check error by turning off power, and on again.
Continue to the next page
65
Indication
Outdoor controller board
LED1 (Green) LED2 (Red)
Contents
3 blinking 1 blinking Abnormality of comp. surface
thermistor(TH34) and discharging
temperature (TH4)
Abnormality of superheat due
to low discharge temperature
Error
Check
Inspection method
code
*1
U2 1Check if stop valves are open.
2Check if connectors (TH4, TH34, LEV-A, and LEV-B) on outdoor controller
board are not disconnected.
3Check if unit is filled with specified amount of refrigerant.
4Measure resistance values among terminals on indoor valve and
U7
outdoor linear expansion valve using a tester.
Detailed
reference
page
P.30
P.31
2 blinking Abnormal high pressure (High U1 1Check if outdoor units have a short cycle on their air ducts.
P.30
2Check if connector (63H/63L) on outdoor controller board is not disconnected.
pressure switch 63H operated.)
3Check if heat exchanger and filter is not dirty.
UL 4Measure resistance values among terminals on linear expansion valve
Abnormal low pressure (Low
using a tester.
P.33
pressure switch 63L operated.)
3 blinking Abnormality of outdoor fan
motor rotational speed
Protection from overheat operation(TH3)
4 blinking Compressor overcurrent
breaking(Startup locked)
Compressor overcurrent breaking
Abnormality of current sensor (P.B.)
Abnormality of power module
Open/short
of discharge thermistor (TH4)
5 blinking
and comp. surface thermistor (TH34)
U8 1Check the outdoor fan motor.
P.31
Ud
UF 1Check if stop valves are open.
P.33
P.33
U6
U3 1Check if connectors (TH3, TH4, TH6, TH7 and TH34) on outdoor controller
P.34
P.33
P.34
P.30
2Check if connector (TH3) on outdoor controller board is disconnected.
2Check looseness, disconnection, and converse connection of
compressor wiring.
UP 3Measure resistance values among terminals on compressor using a tester.
4Check if outdoor unit has a short cycle on its air duct.
UH 5Check leakage of refrigerant.
Open/short of outdoor thermistors U4
(TH3, TH6, TH7 and TH8)
6 blinking Abnormality of heat sink
temperature
7 blinking Abnormality of voltage
4 blinking 1 blinking Abnormality of room temperature thermistor (TH1)
Abnormality of pipe temperature thermistor /Liquid (TH2)
Abnormality of pipe temperature
thermistor/Condenser-Evaporator
2 blinking Abnormality of drain sensor (DS)
Float switch(FS) connector open
board, and connector (CN3) on outdoor power board are not disconnected.
2Measure resistance value of outdoor thermistors.
U5 1Check if outdoor units have a short cycle on their air ducts.
2Measure resistance value of outdoor thermistor(TH8).
U9 1Check looseness, disconnection, and converse connection of
compressor wiring.
2Measure resistance value among terminals on compressor using a tester.
3Check the continuity of contactor (52C).
4Check if power supply voltage decreases.
5Check the wiring of CN52C.
6Check the wiring of CNAF.
P.31
P.31
P.32,33
P1 1Check if connectors (CN20, CN21, CN29 and CN44) and terminal
blocks on indoor controller board are not disconnected.
P2 2Measure
resistance value of indoor thermistors.
P9 Note: Refer to the indoor unit's Installation Manual.
*2
*2
*2
P4 1Check if connector (CN31)(CN4F) and terminal blocks on indoor controller
*2
board is not disconnected.
2Measure resistance value of indoor thermistors.
resistance value among terminals on drain-up machine using a tester.
Indoor drain overflow protection P5 3Measure
4Check if drain pump works.
5Check drain function.
Note: Refer to the indoor unit's Installation Manual.
3 blinking Freezing (cooling)/overheating P6 1Check if indoor unit has a short cycle on its air duct.
2Check if heat exchanger and filter is not dirty.
(heating) protection
3Measure resistance value on indoor and outdoor fan motors.
*2
4 blinking Abnormality of pipe
temperature
*2
4Check if the inside of refrigerant piping is not clogged.
P8 1Check if indoor thermistors(TH2 and TH5) are not disconnected from holder.
2Check if stop valve is open.
3Check converse connection of extension pipe. (on plural units connection)
4Check if indoor/outdoor connecting wire is connected correctly.
(on plural units connection)
*1 Check code displayed on remote controller
*2 Refer to service manual for indoor unit.
OCH533D
66
<Outdoor unit operation monitor function>
[When optional part ‘A-Control Service Tool (PAC-SK52ST)’ is connected to outdoor controller board (CNM)]
Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of check code by
controlling DIP SW2 on ‘A-Control Service Tool’.
Operation indicator
SW2 : Indicator change of self diagnosis
SW2 setting
Explanation for display
Display detail
Unit
ON
1 2 3 4 5 6
<Digital indicator LED1 working details>
(Be sure that the 1 to 6 in the SW2 are set to OFF.)
(1) Display when the power supply ON
When the power supply ON, blinking displays by turns.
Wait for 4 minutes at the longest.
(2) When the display lights (Normal operation)
1Operation mode display.
1 second
interval
(Lighting)
SW2
LED1
ON
(Initial setting)
1 2 3 4 5 6
The tens digit : Operation mode
Display
Operation Model
OFF/FAN
COOLING
HEATING
DEFROSTING
O
C
H
d
2Display during error postponement
Postponement code is displayed when
compressor stops due to the work of
protection device.
Postponement code is displayed while
error is being postponed.
The ones digit : Relay output
Display
Warming-up
Compressor
Compressor
4-way valve
Solenoid valve
0
1
2
3
4
5
6
7
8
A
—
—
—
—
—
—
—
—
ON
ON
—
—
—
—
ON
ON
ON
ON
—
—
—
—
ON
ON
—
—
ON
ON
—
ON
—
ON
—
ON
—
ON
—
ON
—
—
(3) When the display blinks
Inspection code is displayed when compressor stops due to the work of protection devices.
Display
Contents to be inspected (During operation)
U1 Abnormal high pressure (63H worked)
U2 Abnormal high discharge temperature and shell thermistor, shortage of refrigerant
U3 Open/short circuit of discharge thermistor(TH4) and comp. surface thermistor(TH34)
U4 Open/short of outdoor unit thermistors(TH3, TH6, TH7 and TH8)
U5 Abnormal temperature of heat sink
U6 Abnormality of power module
U7 Abnormality of superheat due to low discharge temperature
U8 Abnormality in outdoor fan motor
Ud Overheat protection
UF Compressor overcurrent interruption (When Comp. locked)
Display Inspection unit
UH Current sensor error
Outdoor unit
0
UL Abnormal low pressure
Indoor unit 1
1
UP Compressor overcurrent interruption
Indoor unit 2
2
P1–P8 Abnormality of indoor units
Indoor unit 3
3
A0–A7 Communication error of M-NET system
Display
F3
F5
F9
E8
E9
EA
Eb
EC
E0–E7
Contents to be inspected (When power is turned on)
63L connector(red) is open.
63H connector(yellow) is open.
2 connectors(63H/63L) are open.
Indoor/outdoor communication error (Signal receiving error) (Outdoor unit)
Indoor/outdoor communication error (Transmitting error) (Outdoor unit)
Miswiring of indoor/outdoor unit connecting wire, excessive number of indoor units (4 units or more)
Miswiring of indoor/outdoor unit connecting wire(converse wiring or disconnection)
Startup time over
Communication error except for outdoor unit
OCH533D
67
The black square ( ) indicates a switch position.
Pipe temperature/Liquid (TH3)
−40 to 90
ON
Explanation for display
Display detail
SW2 setting
1 2 3 4 5 6
−40 to 90
(When the coil thermistor detects 0: or below, “–”
and temperature are displayed by turns.)
(Example) When −10:;
0.5 s
0.5 s
2s
Unit
:
10
Discharge temperature (TH4)
3 to 217
ON
1 2 3 4 5 6
ON
3 to 217
(When the discharge thermistor detects 100: or
more, hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 105:;
0.5 s
0.5 s
2s
1
05
:
Output step of outdoor FAN
0 to 10
0 to 10
The number of ON/OFF times of compressor
0 to 9999
0 to 9999
(When the number of times is 100 or more,
hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 42500 times (425 ×100 times);
0.5 s
0.5 s
2s
4
25
100 times
0 to 9999
(When it is 100 hours or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 2450 hours (245 ×10 hours);
0.5 s
0.5 s
2s
2
45
10 hours
Step
1 2 3 4 5 6
ON
1 2 3 4 5 6
Compressor integrating operation times
0 to 9999
ON
1 2 3 4 5 6
ON
Compressor operating current
0 to 50
0 to 50
Note: Omit the figures after the decimal fractions.
Compressor operating frequency
0 to 255
0 to 255
(When it is 100 Hz or more, hundreds digit, tens
digit and ones digit are displayed by turns.
(Example) When 125 Hz;
0.5 s
0.5 s
2s
1
25
A
1 2 3 4 5 6
ON
1 2 3 4 5 6
LEV-A opening pulse
0 to 480
ON
1 2 3 4 5 6
ON
0 to 480
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.
(Example) When 150 pulse;
0.5 s
0.5 s
2s
1
50
Error postponement code history (1)
of outdoor unit
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
“00” is displayed in case of no postponement.
Operation mode on error occurring
Operation mode of when operation stops due to
error is displayed by setting SW2 like below.
1 2 3 4 5 6
ON
(SW2)
ON
1 2 3 4 5 6
1 2 3 4 5 6
OCH533D
68
Hz
Pulse
Code
display
Code
display
The black square ( ) indicates a switch position.
SW2 setting
ON
Explanation for display
Display detail
Pipe temperature/Liquid (TH3) on error
occurring
−40 to 90
−40 to 90
(When the coil thermistor detects 0: or below, “–”
and temperature are displayed by turns.)
(Example) When −15:;
0.5 s
0.5 s
2s
15
:
Compressor temperature (TH34) or
discharge temperature (TH4) on error
occurring
3 to 217
3 to 217
(When the temperature is 100: or more, the
hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 130:;
0.5 s
0.5 s
2s
1
30
:
Compressor operating current on error
occurring
0 to 50
0 to 50
Error history (1) (latest)
Alternate display of abnormal unit
number and code
When no error history,
“ 0 ” and “– –” are displayed by turns.
Error history (2)
Alternate display of error unit number
and code
When no error history,
“ 0 ” and “– –” are displayed by turns.
Thermostat ON time
0 to 999
0 to 999
(When it is 100 minutes or more, the hundreds digit,
tens digit and ones digit are displayed by turns.)
(Example) When 245 minutes;
0.5 s
0.5 s
2s
2
45
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
Unit
A
1 2 3 4 5 6
ON
Code
display
1 2 3 4 5 6
ON
Code
display
1 2 3 4 5 6
ON
1 2 3 4 5 6
OCH533D
Test run elapsed time
0 to 120
0 to 120
(When it is 100 minutes or more, the hundreds digit,
tens digit and ones digit are displayed by turns.)
(Example) When 105 minutes;
0.5 s
0.5 s
2s
1
05
69
Minute
Minute
The black square ( ) indicates a switch position.
Explanation for display
Display detail
SW2 setting
The number of connected indoor units
ON
0 to 3
(The number of connected indoor units are displayed.)
Unit
Unit
1 2 3 4 5 6
Capacity setting display
Displayed as an outdoor capacity code.
Capacity
SW75V
SW100V, 100Y
SW120V, 120Y
ON
1 2 3 4 5 6
Outdoor unit setting information
ON
Code
display
• The tens digit (Total display for applied setting)
Setting details
Display details
H·P / Cooling only
0 : H·P
Single phase / 3 phase
0 : Single phase 2 : 3 phase
• The ones digit
Setting details
1 2 3 4 5 6
Code
14
20
25
1 : Cooling only
Display details
Defrosting switch 0 : Normal
Code
display
1 : For high humidity
(Example) When heat pump, 3 phase and defrosting
(normal) are set up, “20” is displayed.
ON
Indoor pipe temperature/Liquid (TH2(1))
Indoor 1
−39 to 88
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
Indoor pipe temperature/Cond./Eva.
(TH5(1))
Indoor 1
−39 to 88
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
Indoor pipe temperature/Liquid (TH2(2))
Indoor 2
−39 to 88
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
Indoor pipe temperature/Cond./Eva.
(TH5(2))
Indoor 2
−39 to 88
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
Indoor room temperature (TH1)
8 to 39
8 to 39
:
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
:
:
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
:
:
1 2 3 4 5 6
OCH533D
70
The black square ( ) indicates a switch position.
SW2 setting
ON
Display detail
Unit
Explanation for display
Indoor setting temperature
17 to 30
17 to 30
Pressure saturation temperature (T63HS)
−39 to 88
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
Ambient temperature (TH7)
−39 to 88
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
:
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
−40 to 200
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
(When the thermistor detects 100: or more,
hundreds digit, tens digit and ones digit are
displayed by turns.)
Outdoor heat sink temperature (TH8)
−40 to 200
1 2 3 4 5 6
ON
1 2 3 4 5 6
0 to 255
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
Discharge superheat SHd
0 to 255
Cooling = TH4−T63HS
Heating = TH4−T63HS
Sub cool. SC
0 to 130
ON
1 2 3 4 5 6
ON
0 to FFFE (in hexadecimal notation)
(When more than FF in hex (255 in decimal), the
number is displayed in order of 163's and 162's, and
161's and 160's places.
(Example) When 5000 cycles;
0.5 s
0.5 s
2s
9
C4
Cooling = T63HS−TH3
Heating = T63HS−TH2
0 to 500
(When it is 100 or more, hundreds digit, tens digit
and ones digit are displayed by turns.)
Input current of outdoor unit
:
°C
2 cycles
0.1 A
1 2 3 4 5 6
ON
0 to 480
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
LEV-B opening pulse
1 2 3 4 5 6
ON
U9 error detail history (latest)
Description
(No error)
Overvoltage error
Undervoltage error
Input current sensor error
L1-phase open error
Abnormal power synchronous signal
PFC error (SW75VHA)
(Overvoltage / Undervoltage / Overcurrent)
PFC/ IGBT error (SW·VHA)
(Undervoltage)
1 2 3 4 5 6
Display
00
01
02
04
08
10
20
* Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
L1 phase open error (04) + PFC error (10) = 14
OCH533D
71
Pulse
Code
display
The black square ( ) indicates a switch position.
ON
Explanation for display
Display detail
SW2 setting
Unit
DC bus voltage
180 to 370 (SW75/100/120V)
300 to 750 (SW100/120Y)
180 to 370 (SW75/100/120V)
300 to 750 (SW100/120Y)
(When it is 100V or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
V
Error postponement code history (2)
of outdoor unit
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
“00” is displayed in case of no postponement.
Code
display
Error postponement code history (3)
of outdoor unit
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
“00” is displayed in case of no postponement.
Code
display
Error history (3) (Oldest)
Alternate display of abnormal unit
number and code.
When no error history, “0” and “– –“ are displayed by
turns.
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
Code
display
1 2 3 4 5 6
Error thermistor display
When there is no error thermistor,
“–“ is displayed.
ON
1 2 3 4 5 6
Operation frequency on error occurring
0 to 255
ON
3: Outdoor pipe temperature/Liquid (TH3)
4: Discharge thermistor (TH4)
6: 2-phase pipe (TH6)
7: Ambient temperature (TH7)
8: Outdoor heat sink (TH8)
34: Comp. surface thermistor (TH34)
0 to 255
(When it is 100 Hz or more, hundreds digit, tens digit
and ones digit are displayed by turns.)
(Example) When 125 Hz;
0.5 s
0.5 s
2s
1
25
Hz
1 2 3 4 5 6
Fan step on error occurring
0 to 10
ON
Code
display
0 to 10
Step
1 2 3 4 5 6
OCH533D
72
The black square ( ) indicates a switch position.
SW2 setting
Explanation for display
Display detail
LEV-A opening pulse on error occurring
0 to 480
ON
1 2 3 4 5 6
ON
Indoor room temperature (TH1) on error
occurring
8 to 39
0 to 480
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 130 pulse;
0.5 s
0.5 s
2s
1
30
Unit
Pulse
8 to 39
:
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
Indoor pipe temperature/Liquid (TH2) on −39 to 88
error occurring
(When the temperature is 0°C or less, “–” and
−39 to 88
temperature are displayed by turns.)
(Example) When −15°C;
0.5 s
0.5 s
2s
15
Pressure saturation temperature (T63HS)
on error occurring
1 2 3 4 5 6
ON
−39 to 88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example) When −15°C;
0.5 s
0.5 s
2s
15
2-phase pipe (TH6) on error occurring
−39 to 88
1 2 3 4 5 6
ON
−39 to 88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example) When −15°C;
0.5 s
0.5 s
2s
15
Ambient temperature (TH7) on error
occurring
−39 to 88
1 2 3 4 5 6
ON
1 2 3 4 5 6
OCH533D
−39 to 88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(Example) When −15°C;
0.5 s
0.5 s
2s
15
Outdoor heat sink temperature (TH8) on −40 to 200
(When the temperature is 0°C or less, “–” and
error occurring
temperature are displayed by turns.)
−40 to 200
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
73
:
:
:
:
:
The black square ( ) indicates a switch position.
Display detail
Explanation for display
Unit
Discharge superheat on error occurring
SHd
0 to 255
0 to 255
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
(Example) When 150°C;
0.5 s
0.5 s
2s
1
50
:
SW2 setting
ON
1 2 3 4 5 6
Cooling = TH4−T63HS
Heating = TH4−T63HS
Sub cool on error occurring SC
0 to 130
Cooling = T63HS−TH3
Heating = T63HS−TH2
ON
1 2 3 4 5 6
Thermo-on time until error stops
0 to 999
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
0 to 130
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
(Example) When 115°C;
0.5 s
0.5 s
2s
1
15
0 to 999
(When it is 100 minutes or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
(Example) When 415 minutes;
0.5 s
0.5 s
2s
4
Indoor pipe temperature/Liquid
(TH2 (3))
Indoor 3
−39 to 88
Minute
15
−39 to 88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
:
Indoor pipe temperature/Cond./Eva. (TH5 −39 to 88
(3))
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
Indoor 3
−39 to 88
When there is no indoor unit, “00” is displayed.
Controlling status of compressor
operating frequency
:
:
The following code will be a help to know the
operating status of unit.
•The tens digit
Display Compressor operating frequency control
1
Primary current control
Secondary current control
2
•The ones digit (In this digit, the total number of
ON
1 2 3 4 5 6
activated control is displayed.)
Display Compressor operating frequency control
Preventive control for excessive temp1
erature rise of discharge temperature
Preventive control for excessive temp2
erature rise of condensing temperature
4
Frosting preventing control
Preventive control for excessive temp8
erature rise of heat sink
(Example)
The following controls are activated.
LED
• Primary current control
• Preventive control for excessive temperature rise of condensing temperature
• Preventive control for excessive temperature rise of heat sink
1a
OCH533D
74
Code
display
The black square ( ) indicates a switch position.
SW2 setting
Explanation for display
Display detail
Comp. surface temperature (TH34)
3 to 217
3 to 217
(When the comp.shell thermistor detects 100°C or
more, hundreds digit, tens digit and ones digit are
displayed by turns.)
(Example) When 105°C;
0.5 s
0.5 s
2s
ON
1 2 3 4 5 6
1
ON
Unit
U9 Error details (To be shown while
error call is deferred.)
Description
(No error)
Overvoltage error
Undervoltage error
Input current sensor error
L1-phase open error
Abnormal power synchronous signal
PFC error (SW75VHA)
(Overvoltage / Undervoltage / Overcurrent)
PFC/ IGBT error (SW·VHA)
(Undervoltage)
1 2 3 4 5 6
05
Display
00
01
02
* Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
L1 phase open error (04) + PFC error (10) = 14
OCH533D
75
:
04
08
10
20
Code
display
11-8. Request code list
Request code
Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed.
Refer to indoor unit service manual for how to use the controllers and request codes for indoor unit.
Description
Request content
(Display range)
Unit
0
Operation state
Refer to 11-8-1. Detail Contents in Request Code.
–
1
Compressor-Operating current (rms)
0–50
A
2
Compressor-Accumulated operating time
0–9999
10 hours
3
Compressor-Number of operation times
4
Discharge temperature (TH4)
Outdoor unit -Liquid pipe 1 temperature (TH3)
0–9999
3–217
100 times
:
−40–90
:
Outdoor unit-2-phase pipe temperature (TH6)
−39–88
:
9
Outdoor unit-Outside air temperature (TH7)
−39–88
:
10
Outdoor unit-Heat sink temperature (TH8)
−40–200
:
12
Discharge superheat (SHd)
0–255
:
13
Sub-cool (SC)
0–130
:
−39–88
:
Hz
5
Remarks
6
7
8
11
14 Condensing temperature (T63HS)
15
16
Compressor-Operating frequency
0–255
17
Compressor-Target operating frequency
0–255
Hz
18
Outdoor unit-Fan output step
0–10
Step
0–9999
rpm
0–9999
rpm
19
20
Outdoor unit-Fan 1 speed
(Only for air conditioners with DC fan motor)
Outdoor unit-Fan 2 speed
(Only for air conditioners with DC fan motor)
21
22
LEV (A) opening
0–500
Pulses
23
LEV (B) opening
0–500
Pulses
25
Primary current
0–50
A
26
DC bus voltage
180–370
V
Thermostat ON operating time
0–999
24
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Minutes
49
OCH533D
76
"0" is displayed if the air conditioner is a single-fan
type.
Request code
Request content
Description
(Display range)
Unit
50
51
Outdoor unit-Control state
Refer to 11-8-1.Detail Contents in Request Code.
–
52
Compressor-Frequency control state
Refer to 11-8-1.Detail Contents in Request Code.
–
53
Outdoor unit-Fan control state
Refer to 11-8-1.Detail Contents in Request Code.
–
54
Actuator output state
Refer to 11-8-1.Detail Contents in Request Code.
–
55
Error content (U9)
Refer to 11-8-1.Detail Contents in Request Code.
–
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Outdoor unit-Capacity setting display
Refer to 11-8-1.Detail Contents in Request Code.
–
71
Outdoor unit-Setting information
Refer to 11-8-1.Detail Contents in Request Code.
–
90
Outdoor unit-Microprocessor version information
Examples) Ver 5.01 → "0501"
91
Auxiliary information (displayed after
Outdoor unit-Microprocessor version information (sub No.) version information)
Examples) Ver 5.01 A000 → "A000"
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
Ver
–
92
93
94
95
96
97
98
99
100 Outdoor unit - Error postponement history 1 (latest)
101 Outdoor unit - Error postponement history 2 (previous)
102 Outdoor unit - Error postponement history 3 (last but one)
OCH533D
Displays postponement code. (" - - " is
displayed if no postponement code is present)
Displays postponement code. (" - - " is
displayed if no postponement code is present)
Displays postponement code. (" - - " is
displayed if no postponement code is present)
77
Code
Code
Code
Remarks
Request code
Description
Request content
(Display range)
Unit
103 Error history 1 (latest)
Displays error history. (" --" is displayed if no history is present.)
Code
104 Error history 2 (second to last)
Displays error history. (" --" is displayed if no history is present.)
Code
105 Error history 3 (third to last)
Displays error history. (" --" is displayed if no history is present.)
Code
106
107
108
109
3 : TH3
6 : TH6
Abnormal thermistor display
7 : TH7
8 : TH8
(TH3/TH6/TH7/TH8)
0 : No thermistor error
Operation mode at time of error
Displayed in the same way as request code "0".
Compressor-Operating current at time of error
0–50
Compressor-Accumulated operating time at time of error 0–9999
Sensor
number
–
A
10 hours
100 times
:
110 Compressor-Number of operation times at time of error 0–9999
3–217
111 Discharge temperature at time of error
−40–90
:
−39–88
:
116 Outdoor unit-Outside air temperature (TH7) at time of error −39–88
:
117 Outdoor unit-Heat sink temperature (TH8) at time of error −40–200
:
112 Outdoor unit -Liquid pipe 1 temperature (TH3) at time of error
Remarks
113
114 Outdoor unit-2-phase pipe temperature (TH6) at time of error
115
118 Discharge superheat (SHd) at time of error
0–255
119 Sub-cool (SC) at time of error
0–130
:
120 Compressor-Operating frequency at time of error
0–255
Hz
0–10
Step
121
122
123
Outdoor unit at time of error
• Fan output step
Outdoor unit at time of error
• Fan 1 speed (Only for air conditioners with DC fan)
Outdoor unit at time of error
• Fan 2 speed (Only for air conditioners with DC fan)
:
0–9999
rpm
0–9999
rpm
124
125 LEV (A) opening at time of error
0–500
Pulses
126 LEV (B) opening at time of error
0–500
Pulses
127
128
129
Condensing temperature (T63HS) at the time of error
130 Thermostat ON time until operation stops due to error
OCH533D
−39–88
:
0–999
Minutes
78
"0" is displayed if the air conditioner is a singlefan type.
11-8-1. Detail Contents in Request Code
[Operation state] (Request code :" 0")
Data display
Relay output state
Display
C
4
0
1
2
3
4
5
6
7
8
A
Relay output state
Operation mode
Operation mode
Display
0
C
H
d
Operation mode
STOP • FAN
COOL • DRY
HEAT
DEFROST
Power currently
supplied to compressor
–
Compressor
Four-way valve
Solenoid valve
–
–
–
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
[Outdoor unit – Control state] (Request code :" 51")
0
0
0
Data display
0
0
0
0
0
1
0
0
2
State
Normal
Preparing for heat operation
Defrost
[Compressor – Frequency control state] (Request code :" 52")
Frequency control state 2
Data display
0
Display
0
Frequency control state 2
Frequency control state 1
Frequency control state 1
Display
0
1
2
Current limit control
No current limit
Primary current limit control is ON.
Secondary current limit control is ON.
0
1
2
3
4
5
6
7
8
9
A
b
C
d
E
F
Discharge temperature Condensation temperature
Anti-freeze
Heat sink temperature
overheat prevention
overheat prevention
protection control overheat prevention
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
Controlled
[Fan control state] (Request code :" 53 ")
Data display
0
0
Fan step correction value by heat sink temperature overheat prevention control
Fan step correction value by cool condensation temperature overheat prevention control
Display
− (minus)
0
1
2
Correction value
−1
0
+1
+2
OCH533D
79
[Actuator output state] (Request code :"54")
Data display
0
0
Actuator output state 1
Actuator output state 2
Actuator output state 1
Display
SV1
0
1
ON
2
3
ON
4
5
ON
6
7
ON
8
9
ON
A
b
ON
C
d
E
F
Actuator output state 2
Four-way valve
Compressor
Compressor is
warming up
ON
ON
ON
ON
ON
ON
ON
52C
0
1
ON
2
3
4
5
6
7
ON
ON
ON
ON
ON
SV2
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
[Error content (U9)] (Request code :"55 ")
Data display
0
0
Error content 1
Error content 2
Error content 1
Display
Overvoltage
error
: Detected
Undervoltage
error
L1-phase
open error
Power synchronizing
signal error
0
1
2
3
4
5
6
7
8
9
A
b
C
d
E
F
Error content 2
Display
0
1
2
3
OCH533D
80
Converter Fo
error
SS
ON
ON
ON
ON
ON
ON
ON
ON
ON
Display
: Detected
PAM error
ON
ON
ON
ON
[Outdoor unit -–Capacity setting display] (Request code : "70")
Data display
9
10
11
14
20
25
28
40
50
Capacity
35
50
60
71
100
125
140
200
250
[Outdoor unit – Setting information] (Request code : "71")
Data display
0
0
Setting information 1
Setting information 2
Setting information 1
Display
Defrost mode
0
Standard
1
For high humidity
Setting information 2
Single-/
Display
3-phase
0
Single-phase
1
2
3-phase
3
OCH533D
81
Heat pump/
cooling only
Heat pump
Cooling only
Heat pump
Cooling only
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