Mitsubishi PUHZ-SW75VHA, PUHZ-SW75VHA-BS.UK, PUHZ-SW75VHAR3-BS.UK, PUHZ-SW75VHAR4-BS.UK, PUHZ-SW100VHA-BS.UK Service Manual
...
SERVICE MANUAL
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
R410A
PUHZ-SW75VHA.UK
PUHZ-SW75VHA-BS.UK
Salt proof model
PUHZ-SW75VHA-BS
PUHZ-SW100VHA-BS
PUHZ-SW100YHA-BS
PUHZ-SW120VHA-BS
PUHZ-SW120YHA-BS
Note:
•
This manual describes
service data of the outdoor
units only.
PUHZ-SW75VHA-BS.UK PUHZ-SW75VHAR3-BS.UK
PUHZ-SW75VHAR4-BS.UK
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
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
Outdoor unit
[Model Name]
PUHZ-SW75VHA
PUHZ-SW100VHA
PUHZ-SW100YHA
PUHZ-SW120VHA
PUHZ-SW120YHA
[Service ref.]
PUHZ-SW75VHA.UK PUHZ-SW75VHAR3.UK
PUHZ-SW75VHAR4.UK
PUHZ-SW100VHA.UK PUHZ-SW100VHAR3.UK
PUHZ-SW100VHAR4.UK
PUHZ-SW100YHA.UK PUHZ-SW100YHAR1.UK
PUHZ-SW100YHAR3.UK PUHZ-SW100YHAR4.UK
PUHZ-SW120VHA.UK PUHZ-SW120VHAR3.UK
PUHZ-SW120VHAR4.UK
PUHZ-SW120YHA.UK PUHZ-SW120YHAR1.UK
PUHZ-SW120YHAR3.UK PUHZ-SW120YHAR4.UK
PARTS CATALOG (OCB533)
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.
• Please void OCH533
REVISED EDITION-C.
No. OCH533
REVISED EDITION-D
August 2015
SPLIT-TYPE, AIR TO WATER HEAT PUMP
2
PUHZ-SW100YHA(-BS).UK PUHZ-SW100YHAR1(-BS).UK
PUHZ-SW120YHA(-BS).UK PUHZ-SW120YHAR1(-BS).UK
• Power circuit board (P.B.) has been changed.
1 TECHNICAL CHANGES
PUHZ-SW75VHA(-BS).UK PUHZ-SW75VHAR3(-BS).UK
PUHZ-SW100VHA(-BS).UK PUHZ-SW100VHAR3(-BS).UK
PUHZ-SW100YHAR1(-BS).UK PUHZ-SW100YHAR3(-BS).UK
PUHZ-SW120VHA(-BS).UK PUHZ-SW120VHAR3(-BS).UK
PUHZ-SW120YHAR1(-BS).UK PUHZ-SW120YHAR3(-BS).UK
• Added a new function "Energy Monitor" which allows remote controller to display power consumption and heat output.
Service ref. have been changed as follows.
PUHZ-SW75VHAR3(-BS).UK PUHZ-SW75VHAR4(-BS).UK
PUHZ-SW100VHAR3(-BS).UK PUHZ-SW100VHAR4(-BS).UK
PUHZ-SW100YHAR3(-BS).UK PUHZ-SW100YHAR4(-BS).UK
PUHZ-SW120VHAR3(-BS).UK PUHZ-SW120VHAR4(-BS).UK
PUHZ-SW120YHAR3(-BS).UK PUHZ-SW120YHAR4(-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).
OCH533D
3
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
4
3 SAFETY PRECAUTION
Cautions for units utilizing refrigerant R410A
3-2. CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
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.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
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.
Do not use refrigerant other than R410A.
If other refrigerant (R22, etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.
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.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterioration of refrigerant oil, etc.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
If large amount of mineral oil enters, that can cause deterioration of refrigerant oil, etc.
Charge refrigerant from liquid phase of gas
cylinder.
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.
Use the specified refrigerant only.
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.
3-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must disconnected.
Preparation before 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.
Precautions during the repair service.
• 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.
OCH533D
5
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
[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.)
No. Tool name Specifications
1
Gauge manifold · 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
· Use pressure performance of 5.09MPa·G or over.
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 · Only for R410A · Top of cylinder (Pink)
· Cylinder with syphon
8
Refrigerant recovery equipment
—
OCH533D
6
3-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES
Flowchart
Perform the airtight test, vacuum air purging,
additional refrigerant charging (if necessary),
and gas leak check.
• Refer to the owchart below to determine if the existing pipes can be used and if it is necessary to use a lter dryer.
• If the diameter of the existing pipes is different from the specied diameter, refer to technological data materials to conrm if the pipes can be used.
▼
▼
▼
▼
▼
▼
Measure the existing pipe thickness and
check for damage.
The existing pipe thickness meets specications 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.
Disconnect the existing outdoor unit from the
pipes.
Attach the new outdoor unit
The existing pipes cannot be reused.
Use new pipes.
• If the existing outdoor unit cannot operate, use
a refrigerant recovery device to collect the refrigerant.
Use new pipes for SW75, SW100 and SW120 models.
The existing pipe thickness does not meet
specications or the pipes are damaged.
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
7
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.)
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.
3 Tools for R410A (The following table shows whether conventional tools can be used or not.)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
0.8
0.8
0.8
1.0
—
0.8
0.8
0.8
1.0
1.0
Nominal
dimensions(inch)
Diagram below: Piping diameter and thickness
Outside
diameter
(mm)
Thickness
(mm)
R410A R22
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
9.1
13.2
16.6
19.7
—
9.0
13.0
16.2
19.4
23.3
Nominal
dimensions(inch)
Flare cutting dimensions
Outside
diameter
Dimension A
( )
+0
-0.4
(mm)
R410A R22
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
17.0
22.0
26.0
29.0
—
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions(inch)
Flare nut dimensions
Outside
diameter
Dimension B
(mm)
R410A R22
Gauge manifold
Charge hose
Gas leak detector
Refrigerant recovery equipment
Refrigerant cylinder
Applied oil
Safety charger
Charge valve
Vacuum pump
Flare tool
Bender
Pipe cutter
Welder and nitrogen gas cylinder
Refrigerant charging scale
Vacuum gauge or thermistor vacuum gauge and
vacuum valve
Charging cylinder
Air purge, refrigerant charge
and operation check
Gas leak check
Refrigerant recovery
Refrigerant charge
Apply to flared section
Prevent compressor malfunction
when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out
when detaching charge hose
Vacuum drying and air
purge
Flaring work of piping
Bend the pipes
Cut the pipes
Weld the pipes
Refrigerant charge
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refrigerant to thermistor vacuum gauge)
Refrigerant charge
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester oil and alkylbenzene
oil (minimum amount)
Tool exclusive for R410A
Tool exclusive for R410A
Tools for other refrigerants can
be used if equipped with adapter for reverse flow check
Tools for other refrigerants
can be used by adjusting
flaring dimension
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants
can be used
Tool exclusive for R410A
Tools and materials Use R410A tools Can R22 tools be used?
(Usable if equipped
with adapter for rever se flow)
(Usable by adjusting
flaring dimension)
Can R407C tools be used?
Ester oil:
Alkylbenzene oil: minimum amount
(Usable if equipped
with adapter for rever se flow)
(Usable by adjusting
flaring dimension)
: 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.
Dimension A
Dimension B
OCH533D
8
4 FEATURES
PUHZ-SW75VHA
PUHZ-SW75VHA-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.
PUHZ-SW100VHA
PUHZ-SW100YHA
PUHZ-SW120VHA
PUHZ-SW120YHA
PUHZ-SW100VHA-BS
PUHZ-SW100YHA-BS
PUHZ-SW120VHA-BS
PUHZ-SW120YHA-BS
OCH533D
9
5 SPECIFICATIONS
<Reference data> Plate heat exchanger (ACH70-40 plates)
Nominal water ow L/min 22.9
Heating
(A7/W35)
Capacity kW 8.00
COP 4.40
Power input kW 1.82
Heating
(A7/W45)
Capacity kW 8.00
COP 3.40
Power input kW 2.35
Heating
(A2/W35)
Capacity kW 7.50
COP 3.40
Power input kW 2.20
Heating
(A2/W45)
Capacity kW 7.50
COP 2.83
Power input kW 2.65
Nominal water ow L/min 18.9
Cooling
(A35/W7)
Capacity kW 6.60
EER 2.55
Power input kW 2.59
Cooling
(A35/W18)
Capacity kW 7.10
EER 4.01
Power input kW 1.77
Rating conditions
Nominal operating condition
Heating (A7/W35)
Outside air temperature (Dry-bulb) + 7°C
Outside air temperature (Wet-bulb) + 6°C
Water temperature (inlet/outlet) + 30°C/+ 35°C
Heating (A7/W45)
Outside air temperature (Dry-bulb) + 7°C
Outside air temperature (Wet-bulb) + 6°C
Water temperature (inlet/outlet) + 40°C/+ 45°C
Heating (A2/W35)
Outside air temperature (Dry-bulb) + 2°C
Outside air temperature (Wet-bulb) + 1°C
Water temperature (inlet/outlet) + 30°C/+ 35°C
Heating (A2/W45)
Outside air temperature (Dry-bulb) + 2°C
Outside air temperature (Wet-bulb) + 1°C
Water temperature (inlet/outlet) + 40°C/+ 45°C
Cooling (A35/W7)
Outside air temperature (Dry-bulb) + 35°C
Outside air temperature (Wet-bulb) + 24°C
Water temperature (inlet/outlet) + 12°C/+ 7°C
Cooling (A35/W18)
Outside air temperature (Dry-bulb) + 35°C
Outside air temperature (Wet-bulb) + 24°C
Water temperature (inlet/outlet) + 23°C/+ 18°C
Note: "COP" and "Power input" in the above table do NOT
contain the "pump input (based on EN 14511)".
Nominal water ow L/min 32.1
Heating
(A7/W35)
Capacity kW 11.2
COP 4.45
Power input kW 2.51
Heating
(A7/W45)
Capacity kW 11.2
COP 3.42
Power input kW 3.27
Heating
(A2/W35)
Capacity kW 10.0
COP 3.32
Power input kW 3.02
Heating
(A2/W45)
Capacity kW 10.0
COP 2.66
Power input kW 3.76
Nominal water ow L/min 26.1
Cooling
(A35/W7)
Capacity kW 9.10
EER 2.75
Power input kW 3.31
Cooling
(A35/W18)
Capacity kW 10.0
EER 4.35
Power input kW 2.30
PUHZ-SW75VHA(-BS).UK
PUHZ-SW75VHAR3(-BS).UK
PUHZ-SW100VHA(-BS).UK PUHZ-SW100VHAR3(-BS).UK
PUHZ-SW100YHA(-BS).UK PUHZ-SW100YHAR1/R3(-BS).UK
PUHZ-SW120VHA(-BS).UK PUHZ-SW120VHAR3(-BS).UK
PUHZ-SW120YHA(-BS).UK PUHZ-SW120YHAR1/R3(-BS).UK
Nominal water ow L/min 45.9
Heating
(A7/W35)
Capacity kW 16.0
COP 4.10
Power input kW 3.90
Heating
(A7/W45)
Capacity kW 16.0
COP 3.23
Power input kW 4.95
Heating
(A2/W35)
Capacity kW 12.0
COP 3.24
Power input kW 3.70
Heating
(A2/W45)
Capacity kW 12.0
COP 2.52
Power input kW 4.76
Nominal water ow L/min 35.8
Cooling
(A35/W7)
Capacity kW 12.5
EER 2.32
Power input kW 5.38
Cooling
(A35/W18)
Capacity kW 14.0
EER 4.08
Power input kW 3.43
OCH533D
10
Nominal water ow L/min 22.9
Heating
(A7/W35)
Capacity kW 8.00
COP 4.40
Power input kW 1.82
Heating
(A7/W45)
Capacity kW 8.00
COP 3.40
Power input kW 2.35
Heating
(A2/W35)
Capacity kW 7.50
COP 3.40
Power input kW 2.20
Heating
(A2/W45)
Capacity kW 7.50
COP 2.83
Power input kW 2.65
Nominal water ow L/min 18.9
Cooling
(A35/W7)
Capacity kW 6.60
EER 2.86
Power input kW 2.31
Cooling
(A35/W18)
Capacity kW 7.10
EER 4.43
Power input kW 1.60
Rating conditions
Nominal operating condition
Heating (A7/W35)
Outside air temperature (Dry-bulb) + 7°C
Outside air temperature (Wet-bulb) + 6°C
Water temperature (inlet/outlet) + 30°C/+ 35°C
Heating (A7/W45)
Outside air temperature (Dry-bulb) + 7°C
Outside air temperature (Wet-bulb) + 6°C
Water temperature (inlet/outlet) + 40°C/+ 45°C
Heating (A2/W35)
Outside air temperature (Dry-bulb) + 2°C
Outside air temperature (Wet-bulb) + 1°C
Water temperature (inlet/outlet) + 30°C/+ 35°C
Heating (A2/W45)
Outside air temperature (Dry-bulb) + 2°C
Outside air temperature (Wet-bulb) + 1°C
Water temperature (inlet/outlet) + 40°C/+ 45°C
Cooling (A35/W7)
Outside air temperature (Dry-bulb) + 35°C
Outside air temperature (Wet-bulb) + 24°C
Water temperature (inlet/outlet) + 12°C/+ 7°C
Cooling (A35/W18)
Outside air temperature (Dry-bulb) + 35°C
Outside air temperature (Wet-bulb) + 24°C
Water temperature (inlet/outlet) + 23°C/+ 18°C
Nominal water ow L/min 32.1
Heating
(A7/W35)
Capacity kW 11.2
COP 4.45
Power input kW 2.51
Heating
(A7/W45)
Capacity kW 11.2
COP 3.42
Power input kW 3.27
Heating
(A2/W35)
Capacity kW 10.0
COP 3.32
Power input kW 3.01
Heating
(A2/W45)
Capacity kW 10.0
COP 2.66
Power input kW 3.76
Nominal water ow L/min 26.1
Cooling
(A35/W7)
Capacity kW 9.10
EER 2.75
Power input kW 3.31
Cooling
(A35/W18)
Capacity kW 10.0
EER 4.35
Power input kW 2.30
PUHZ-SW75VHAR4(-BS).UK
PUHZ-SW100VHAR4(-BS).UK
PUHZ-SW100YHAR4(-BS).UK
PUHZ-SW120VHAR4(-BS).UK
PUHZ-SW120YHAR4(-BS).UK
Nominal water ow L/min 45.9
Heating
(A7/W35)
Capacity kW 16.0
COP 4.10
Power input kW 3.90
Heating
(A7/W45)
Capacity kW 16.0
COP 3.23
Power input kW 4.95
Heating
(A2/W35)
Capacity kW 12.0
COP 3.24
Power input kW 3.70
Heating
(A2/W45)
Capacity kW 12.0
COP 2.52
Power input kW 4.76
Nominal water ow L/min 35.8
Cooling
(A35/W7)
Capacity kW 12.5
EER 2.32
Power input kW 5.39
Cooling
(A35/W18)
Capacity kW 14.0
EER 4.08
Power input kW 3.43
OCH533D
11
A
kW
W
kW
K
/min(CFM
)
dB
dB
mm (in)
mm (in)
mm (in)
kg (lb)
kg (lb)
L
mm (in)
mm (in)
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
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref.
PUHZ-SW75VHA-BS.UK PUHZ-SW75VHAR3-BS.UK
PUHZ-SW75VHA.UK PUHZ-SW75VHAR3.UK
TNB220FLHMT
Propeller fan o 1
0.074
55(1,940)
48
51
943(37-1/8)
75(165)
3.2(7.0)
0.87(FV50S)
2 to 40 m
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
Inverter
—
Plate fin coil
Reverse cycle
950(37-3/8)
330+30(13+1-3/16)
R410A
9.52(3/8)
15.88(5/8)
Flared
Flared
Maximum 10 m
HP switch
Comp. surface thermo
Discharge thermo
Over current detection
Single, 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
1.3
19
A
kW
W
kW
K
/min(CFM
)
dB
dB
mm (in)
mm (in)
mm (in)
kg (lb)
kg (lb)
L
mm (in)
mm (in)
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
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref.
PUHZ-SW75VHAR4-BS.UK
PUHZ-SW75VHAR4.UK
SNB220FAGMC-L1
Propeller fan o 1
0.074
55(1,940)
48
51
943(37-1/8)
75(166)
3.2(7.0)
0.60(FV50S)
2 to 40 m
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
Inverter
—
Plate fin coil
Reverse cycle
950(37-13/32)
330+30(13+1-3/16)
R410A
9.52(3/8)
15.88(5/8)
Flared
Flared
Maximum 30 m
HP switch
Comp. surface thermo
Discharge thermo
Over current detection
Single, 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
1.5
17
OCH533D
12
3 phase, 50Hz, 400V
13
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
Inverter
—
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)
1.40(FV50S)
9.52(3/8)
15.88(5/8)
Flared
Flared
Maximum 30 m
2 to 75 m
A
kW
W
kW
K
/min(CFM
)
dB
dB
m (in)
mm (in)
mm (in)
kg (lb)
kg (lb)
L
mm (in)
mm (in)
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
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref.
OUTDOOR UNIT
REFRIGERANT PIPING
ANB33FNDMT
2.5
ANB42FNDMT
2.5
HP switch
LP switch
Discharge thermo
Comp.surface thermo
Over current detection
50
54
51
54
PUHZ-SW100YHA.UK
PUHZ-SW120YHA.UK
PUHZ-SW100YHAR3.UK PUHZ-SW120YHAR3.UK
PUHZ-SW100YHAR4.UK PUHZ-SW120YHAR4.UK
PUHZ-SW120YHA-BS.UK
PUHZ-SW120YHAR3-BS.UK
PUHZ-SW120YHAR4-BS.UK
PUHZ-SW100YHA-BS.UK
PUHZ-SW100YHAR3-BS.UK
PUHZ-SW100YHAR4-BS.UK
A
kW
W
kW
K
/min(CFM
)
dB
dB
m (in)
mm (in)
mm (in)
kg (lb)
kg (lb)
L
mm (in)
mm (in)
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
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref.
50
54
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
Inverter
—
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)
118(261)
R410A
4.6(10.2)
1.40(FV50S)
9.52(3/8)
15.88(5/8)
Flared
Flared
Maximum 30 m
2 to 75 m
29.5
HP switch
LP switch
Discharge thermo
Comp. surface thermo
Over current detection
Single 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
51
54
ANB42FNEMT
2.5
ANB33FNEMT
2.5
PUHZ-SW100VHAR4.UK
PUHZ-SW120VHAR4.UK
PUHZ-SW100VHA.UK PUHZ-SW120VHA.UK
PUHZ-SW100VHAR3.UK
PUHZ-SW120VHAR3.UK
PUHZ-SW100VHAR4-BS.UK
PUHZ-SW100VHA-BS.UK
PUHZ-SW100VHAR3-BS.UK
PUHZ-SW120VHAR4-BS.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW120VHAR3-BS.UK
OCH533D
13
6 DATA
6-1. REFILLING REFRIGERANT CHARGE (R410A : kg)
6-2. COMPRESSOR TECHNICAL DATA
Service Ref.
Piping length (one way)
Initial
charged
10 m 20 m 30 m 40 m 50 m 60 m 75 m
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
U-V
U-W
W-V
Service Ref.
Compressor model
Winding
Resistance
( " )
U-V
U-W
W-V
Service Ref.
Compressor model
Winding
Resistance
( " )
ANB33FNEMT
(at 20°C)
(at 20°C)
0.19
0.19
0.19
PUHZ-SW100VHA.UK
PUHZ-SW100VHAR3.UK
PUHZ-SW100VHAR4.UK
PUHZ-SW100VHA-BS.UK
PUHZ-SW100VHAR3-BS.UK
PUHZ-SW100VHAR4-BS.UK
SNB220FAGMC-L1
0.95
0.95
0.95
PUHZ-SW75VHAR4.UK
PUHZ-SW75VHAR4-BS.UK
ANB33FNDMT
0.30
0.30
0.30
ANB42FNDMT
ANB42FNEMT
0.30
0.30
0.30
TNB220FLHMT
0.88
0.88
0.88
PUHZ-SW75VHA.UK
PUHZ-SW75VHAR3.UK
PUHZ-SW75VHA-BS.UK
PUHZ-SW75VHAR3-BS.UK
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
PUHZ-SW120VHA.UK
PUHZ-SW120VHAR3.UK
PUHZ-SW120VHAR4.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW120VHAR3-BS.UK
PUHZ-SW120VHAR4-BS.UK
0.19
0.19
0.19
Additional charge is required for pipes
longer than 10 m.
OCH533D
14
6-3. NOISE CRITERION CURVES
1.5m
1m
MICROPHONE
UNIT
GROUND
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
PUHZ-SW75VHA(-BS).UK
PUHZ-SW75VHAR3(-BS).UK
PUHZ-SW75VHAR4(-BS).UK
COOLING
MODE
HEATING
48
SPL(dB)
51
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
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
COOLING
MODE
HEATING
50
SPL(dB)
54
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
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
COOLING
MODE
HEATING
51
SPL(dB)
54
LINE
OCH533D
15
7 OUTLINES AND DIMENSIONS
Unit : mm
Air Intake
Rear Air Intake
Handle for moving
Handle for moving
322
950
473
943
23
*1 447
*1 431
A
2
1
Handle for moving
Handle for moving
Service panel
Earth terminal
Left···Power supply wiring
Right···Indoor/Outdoor wiring
Terminal Connections
Rear piping cover
Front piping cover
Side Air Intake
Handle for moving
40
54
28 370 19
417
53
57 41
600 175175
330
Rear Air Intake
Air Discharge
Side Air Intake
Installation Feet
2-U Shaped notched holes
(Foundation Bolt M10)
2-12 o 36 oval holes
(Foundation Bolt M10)
30
220 145 145 14530
81 219
71
71
Bottom piping hole
(Knockout)
Drain hole
(5-[33)
Piping Knockout Hole Details
19 55
23 27 92
92
4075
73 63
Right piping hole
(Knockout)
Right trunking hole
(Knockout)
Power supply wiring hole
(2-[27Knockout)
[92
27 55
7323 63
40
92
65
45
Front piping hole
(Knockout)
Front trunking hole
(Knockout)
Power supply wiring hole
(2-[27Knockout)
[92
4045
65
92
27 55
23 73 63
Rear piping hole
(Knockout)
Rear trunking hole
(Knockout)
Power supply wiring hole
(2-[27Knockout)
[92
Example of Notes
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.
Over
Over
Less than
Piping and wiring connections
can be made from 4 directions:
front, right, rear and below.
4 PIPING-WIRING DIRECTIONS
3 FOUNDATION BOLTS2 SERVICE SPACE
1 FREE SPACE (Around the unit)
The diagram below shows a
basic example.
Explanation of particular details is
given in the installation manuals etc.
Over10
500
500
Over100
Dimensions of space needed
for service access are
shown in the below diagram.
Service space
30
Please secure the unit firmly
with 4 foundation (M10) bolts.
(Bolts and washers must be
purchased locally.)
<Foundation bolt height>
FOUNDATION
over 100mm
over 500mm
over 10mm
FREE
over 10mm
VHA/R3
VHAR4
673A670
PUHZ-SW75VHA.UK PUHZ-SW75VHAR3.UK PUHZ-SW75VHAR4.UK
PUHZ-SW75VHA-BS.UK PUHZ-SW75VHAR3-BS.UK PUHZ-SW75VHAR4-BS.UK
OCH533D
16
Handle for moving
Side Air Intake
Front piping cover
Rear piping cover
Air intake
Rear Air Intake
Handle for moving
Handle for moving
Terminal connection
Left···Power supply wiring
Right···Indoor/Outdoor wiring
Earth terminal
Service panel
Handle for moving
1
2
Air Discharge
Rear Air Intake
Side Air Intake
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
Piping Knockout Hole Details
600175 175
330
417
42
66
53 56
45
(19)28 370
2-U Shaped notched holes
(Foundation Bolt M10)
2-12 x 36 Oval holes
(Foundation Bolt M10)
Installation Feet
30
45 40
65
92
27 55
23 73 63
Rear piping hole
(Knockout)
Rear trunking hole
(Knockout)
Power supply wiring hole
(2-
{
27Knockout)
{
92
19 55
92
75 40
73 63
23 27 92
Right piping hole
(Knockout)
Right trunking hole
(Knockout)
Power supply wiring hole
(2-
{
27Knockout)
{
92
92
65
4540
27 55
23
73 63
Front piping hole
(Knockout)
Front trunking hole
(Knockout)
Power supply wiring hole
(2-
{
27Knockout)
{
92
14514522030 145
81 219
71
71
Bottom piping hole
(Knockout)
Drain hole
(5-{33)
1350
23
950
A
*1 447
*1 431
371 635
322
Handle for moving
VHA
YHA
1,079
A
930
Unit : mm
Over
Over
Over
Over
Less than
Piping and wiring connections
can be made from 4 directions:
front, right, rear and below.
4 PIPING-WIRING DIRECTIONS
3 FOUNDATION BOLTS2 SERVICE SPACE
1 FREE SPACE (Around the unit)
Please secure the unit firmly
with 4 foundation (M10) bolts.
(Bolts and washers must be
purchased locally.)
<Foundation bolt height>
Dimensions of space needed
for service access are
shown in the below diagram.
The diagram below shows a
basic example.
Explanation of particular details is
given in the installation manuals etc.
30
FOUNDATION
10
500
500
150
Service space
FREE
Over 10mm
Over 10mm
Over 150mm
Over 1000mm
PUHZ-SW100VHA.UK
PUHZ-SW100VHAR3.UK PUHZ-SW100VHAR4.UK
PUHZ-SW100VHA-BS.UK
PUHZ-SW100VHAR3-BS.UK PUHZ-SW100VHAR4-BS.UK
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-SW120VHA.UK
PUHZ-SW120VHAR3.UK PUHZ-SW120VHAR4.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW120VHAR3-BS.UK PUHZ-SW120VHAR4-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
OCH533D
17
8 WIRING DIAGRAM
BH79B652H01
PUHZ−SW75VHA WIRING DIAGRAM
1 2 3 4 5 6 7 8
OFF
ON
75V
MODEL
SW6
*
1 MODEL SELECT
The black square ( ) indicates a switch position.
SW5-6
*
2
OFF
ON
1 2 3 4 5 6
*
2 SW5 -1 to 5 : Function Switch
SYMBOL NAME SYMBOL NAME SYMBOL NAME
TB1
MC
MF1
21S4
63H
63HS
TH3
TH4
TH6
TH7
TH8
TH34
LEV-A, LEV-B
ACL
CY1, CY2
Terminal Block <Power Supply, Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (Four-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
P. B.
N. F.
C. B.
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>
R, S
U, V, W
IPM
PFC
CB1, CB2, CB3
LI, LO
NI, NO
EI, E2, E3
52C
SW1
SW4
SW5
SW6
SW7
SW8
SW9
SWP
CN31
CNDM
CN51
SV1/CH
SS
CNM
LED1, LED2
F1, F2, F3, F4
X51, X52, X54
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
C. B.
P. B.
TH8
TH6TH7 TH4TH3
U
CB3
N. F.
21S4
L N S1 S2 S3
INDOOR
UNIT
POWER SUPPLY
~/N 230V 50Hz
TB1
V
W
5
2
2
2
2
RED
WHT
BLK
t° t° t° t° t°
t°
M C
CN5
(RED)
CNAC2
(RED)
CNAC1
(WHT)
LO N O
LI N I
EI
CN52C
(BLK)
3
1
1
3
2
1
1
2
52C
CN2
(WHT)
CN3
(WHT)
CN5
(RED)
CN4
(WHT)
1
7
1
2
1
2
2
1
LEV-A
CNS
(WHT)
CNAC
(WHT)
CNDC
(PNK)
F2
F1
F3
F4
21S4
(GRN)
CN2
(WHT)
CN4
(WHT)
CN3S
(WHT)
TH7/6
(RED)
TH3
(WHT)
TH4
(WHT)
TR AN S
C NV M NT
(WHT)
C NM N T
(WHT)
C NM
(WHT)
LED1
LED2
X52
SV1
/CH
(GRY)
X54
63H
(YLW)
CN52C
(RED)
2
5
2
1 4 1 2 2 1
1
3
31 1 5
1
14
1
3
1 3
1 2
1 7
3
1
13
1 2
3 4
31 31
LE V-A
(WHT)
51
MS
3~
CB2CB1
R
S
U
V
W
PFC
IPM
AC L
E3E2
RED
BLU
RE D
W H T
RE D
W H T
YLW
ORN
BRN
RE D
W H T
RE D
W H T
CY1
CY2
GRN/YLW
SS
(WHT)
X51
31
MS
3~
MF1
CNF1
(WHT)
1
7
63H
31
TH34
2 1
TH34
(RED)
63HS
(WHT)
63HS
LE V-B
(RED)
M
LEV-B
51
M
CNDM
(WHT)
CN51
(WHT)
1
3
1
5
C NF2
(WHT)
1
7
63L
(RED)
1 3
+ + +
SW7
SW6SW1
SW9
CN31
*1*
1
SW5SW8SW4 SWP
PUHZ-SW75VHA.UK PUHZ-SW75VHAR3.UK
PUHZ-SW75VHA-BS.UK PUHZ-SW75VHAR3-BS.UK
OCH533D
18
PUHZ-SW75VHAR4.UK PUHZ-SW75VHAR4-BS.UK
SYMBOL NAME SYMBOL NAME
TB1
MC
MF1
21S4
63H
63HS
TH3
TH4
TH6
TH7
TH8
TH34
LEV-A, LEV-B
ACL
CY1, CY2
P. B.
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
C. B. Controller Circuit Board
Fuse <T6.3AL250V>
Switch <Manual Defrost, Defect History Record Reset,
Refrigerant Address>
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>
F1, F2, F3, F4
SW1
SW4
SW5
SW6
SW7
SW8
SW9
SWP
CNDM
SV1/CH
SV3/SS
CNM
1 2 3 4 5 6 7 8
OFF
ON
75V
MODEL
SW6
*
1 MODEL SELECT
The black square ( ) indicates a switch position.
SW5-6
*
2
OFF
ON
1 2 3 4 5 6
*
2 SW5 -1 to 5 : Function Switch
C. B.
P. B.
TH8
TH6TH7 TH4TH3
U
21S4
L N S1 S2 S3
TO
INDOOR UNIT
POWER SUPPLY
~/N 230V 50Hz
TB1
V
W
2
2
CY2
CY1
t° t° t° t° t°
t°
MC
CNAC2
(RD)
S/N1 R/L1
CN2
(RD)
CNDC
(PK)
CN4
(WH)
CN6
(WH)
1
7
1
1
3
3
CNAC1
(WH)
1
3
121
LEV-A
CNS
(WH)
CNAC
(WH)
CNDC
(PK)
F2
F1
F3
F4
21S4
(GN)
CN4
(WH)
TH7/6
(RD)
TH3
(WH)
TH4
(WH)
TR AN S
C NM
(WH)
LED1
LED2
X52
SV1/CH
(GY)
X54
63H
(YE)
2
1 4 1 2 2 1
1
3
1
14
1
3
1 3
1 2
7
3
1
13
1
2
3 4
7
1
31
LE V-A
(WH)
51
MS
3~
Uo
Vo
Wo
AC L
E3
EI
E4
RD
WH
RD
BK
WH
YE
OG
BN
BK
BK
BK
DB2
DB1
TBL2TBL4
GNYE
SV3/SS
(WH)
X51
31
MS
3~
MF1
CNF1
(WH)
1
7
63H
31
TH34
2 1
TH34
(RD)
63HS
(WH)
63HS
LE V-B
(RD)
M
LEV-B
51
M
CNDM
(WH)
+
+
+
–
–
–
~
~
~
~
~
~
+
IC710
Q600
DB3
7
CN2
(RD)
*1 *1
SW7
SW6SW1
SW9
SW5SW8SW4 SWP
OCH533D
19
PUHZ-SW100VHA.UK PUHZ-SW100VHAR3.UK
PUHZ-SW100VHA-BS.UK PUHZ-SW100VHAR3-BS.UK
PUHZ-SW120VHA.UK PUHZ-SW120VHAR3.UK
PUHZ-SW120VHA-BS.UK PUHZ-SW120VHAR3-BS.UK
BH79B653H01
100V
120V
SYMBOL NAME SYMBOL NAME SYMBOL NAME
TB1
MC
MF1, MF2
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
TH34
LEV-A, LEV-B
DCL
CB
CY1, CY2
Terminal Block <Power Supply, 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 (internal) <Heat Sink>
Thermistor <Comp. Surface>
Linear Expansion Valve
Reactor
Main Smoothing Capacitor
Capacitor
P. B. 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>
SW7
SW8
SW9
SWP
CN31
CNDM
CN51
SV1/CH
SS
CNM
LED1, LED2
F1, F2, F3, F4
X51, X52, X54
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
U, V, W
LI
NI
P2
N2
DCL1, DCL2
IGBT
EI, E2, E3, E4
52C
C. B.
SW1
SW4
SW5
SW6
POWER SUPPLY
~/N 230V 50Hz
INDOOR
UNIT
P. B.
W
DCL
C B
L N S1 S2 S3
TB1
V
U
2
RED
WHT
BLK
MC
C N2
(WHT)
C N4
(WHT)
1 7
21
3 1
RED
BLU
YLW
ORN
BRN
WHT
RED
GRN/YLW
B LK
(RED)
CNAC2
(WHT)
CNAC1
LINI
EI
E3
CN52C
(RED)
3
1
1
3
52C
52C
1 3
DCL1
DCL2
+
P2
N2
+
-
UVW
CNDC
(PNK)
+
B LK
2
MS
3~
E2
B LK
E4
B LK
CY1
CY2
IGBT
RE D
W H T
C. B.
TH6TH7 TH4TH3
21S4
t° t° t° t°
LEV-A
CNS
(WHT)
CNAC
(WHT)
CNDC
(PNK)
F2
F1
F3
F4
21S4
(GRN)
CN2
(WHT)
C N4
(WHT)
TH7/6
(RED)
TH3
(WHT)
TH4
(WHT)
TRANS
CNVMNT
(WHT)
CNMNT
(WHT)
CNM
(WHT)
LED1
LED2
X52
SV1
/CH
(GRY)
X54
63H
(YLW)
2
7
1 4 1 2 2 1
1 3
31 1 5
1 14
1 2
1 7
3
1
13
1
2
3 4
31 31
LEV-A
(WHT)
51
SS
(WHT)
X51
31
MS
3~
MF1
1
7
63L63H
63L
(RED)
1 3
31
TH34
t°
2 1
TH34
(RED)
63HS
(WHT)
63HS
LEV-B
(RED)
M
LEV-B
51
M
MF2
CNF2
(WHT)
CNF1
(WHT)
1
7
2
7
CN52C
(RED)
3
1 3
3
t°
TH8
CN3S
(WHT)
1
3
CNDM
(WHT)
CN51
(WHT)
1
3
1
5
~
~
MS
3~
1 2 3 4 5 6 7 8
OFF
ON
MODEL
SW6 SW5-6 *2
OFF
ON
1 2 3 4 5 6
1 2 3 4 5 6 7 8
OFF
ON
OFF
ON
1 2 3 4 5 6
*
2 SW5 -1 to 5 : Function Switch
SW7
SW6SW1
SW9
CN31
*1*
1
SW5SW8SW4 SWP
*
1 MODEL SELECT
The black square ( ) indicates a switch position.
OCH533D
20
PUHZ-SW100VHAR4.UK PUHZ-SW120VHAR4.UK
PUHZ-SW100VHAR4-BS.UK PUHZ-SW120VHAR4-BS.UK
*1 *1
POWER SUPPLY
~/N 230V 50Hz
TO
INDOOR
UNIT
W
DCL
L
N S1 S2 S3
TB1
V
U
2
RD
WH
BK
MC
CN4
(WH)
3
1
RD
BU
YE
OG
BN
GNYE
BK
CNAC2
(RD)
CNAC1
(WH)
LINI
EI
E3
CN52C
(RD)
3
1
1
3
DCL1
DCL2
+
+
-
UVW
CNDC
(PK)
BK
2
MS
3~
E2
BK
E4
BK
CY1
CY2
IGBT
7
3
3
t°
TH8
~
~
CN52C
(RD)
P. B.
BK WH
C. B.
TH6TH7 TH4TH3
21S4
t°
t° t° t°
LEV-A
CNS
(WH)
CNAC
(WH)
CNDC
(PK)
F2
F1
F3
F4
21S4
(GN)
CN2
(RD)
CN4
(WH)
TH7/6
(RD)
TH3
(WH)
TH4
(WH)
TRANS
CNM
(WH)
LED1
LED2
X52
SV1/CH
(GY)
X54
63H
(YE)
2
7
1 4 1 2 2 1
1 3
1
14
1 2
1 7
1
3
13
1 2
3 4
31 31
LEV-A
(WH)
51
SV3/SS
(WH)
X51
31
MF1
CNF1
(WH)
1
7
63L63H
63L
(RD)
1 3
31
TH34
t°
2 1
TH34
(RD)
63HS
(WH)
63HS
LEV-B
(RD)
M
LEV-B
51
M
MF2
CNF2
(WH)
1
7
2
SW7
SW6SW1
SW9
SW5SW8SW4 SWP
31
CNDM
(WH)
MS
3~
MS
3~
1 2
CN2
(RD)
1 7
31
31
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
OFF
ON
100V
MODEL
SW6 SW5-6 *2
OFF
ON
OFF
ON
120V
OFF
ON
1 2 3 4 5 6
1 2 3 4 5 6
*1 MODEL SELECT
The black square (
) indicates a switch position.
*2 SW5 -1 to 5 : Function Switch
Thermistor <2-Phase Pipe>
TB1
MC
MF1, MF2
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
TH34
DCL
CY1, CY2
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 <Ambient>
Thermistor internal <Heat Sink>
Thermistor <Comp. Surface>
Linear Expansion Valve
Reactor
Capacitor
Power Circuit Board
P. B .
SYMBOL NAME SYMBOL NAME SYMBOL NAME
SW8
SW9
SWP
CNDM
SV1/CH
SV3/SS
CNM
F1, F2, F3, F4
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>
LEV-A, LEV-B
Switch <Function Switch>
Switch <Function Switch, Model Select>
Switch <Model Select>
Switch <Function Switch>
SW4
SW1
Record Reset, Refrigerant Address
>
Controller Circuit Board
C. B.
SW5
SW6
SW7
Switch <Manual Defrost, Defect History
OCH533D
21
PUHZ-SW100/120YHA WIRING DIAGRAM
BH79B654H01
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
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
Power Circuit Board
Connection Terminal <U/V/W-Phase>
P. B.
TB-U/V/W
Noise Filter Circuit Board
Connection Terminal
<L1/L2/L3/N-Power Supply
>
N. F.
LI1/LI2/LI3/NI
Connection Terminal
<L1/L2/L3/N-Power Supply
>
LO1/LO2/LO3/NO
Converter Circuit Board
CONV. B.
Connection Terminal <Ground>
GD1, GD3
Connection Terminal <L1-Power Supply>
L1-A1/IN
Connection Terminal <L1-Power Supply>
L1-A2/OU
Connection Terminal <L2-Power Supply>
L2-A2/OU
Connection Terminal <L3-Power Supply>
L3-A2/OU
Connection Terminal
N-IN
Connection Terminal
CK-OU
SYMBOL NAME SYMBOL NAME SYMBOL NAME
Connection Terminal
<L1/L2/L3-Power Supply
>
TB-L1/L2/L3
SW4
SW5
SW6
SW7
SW8
SW9
SWP
CN31
CNDM
CN51
SV1/CH
SS
CNM
LED1, LED2
F1, F2, F3, F4
X51, X52, X54
SW1
C. B.
Connection Terminal
TB-N
52C Relay
X52CA
Switch <Manual Defrost, Defect History,
Record Reset, Refrigerant Address>
Switch <Test Operation>
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
Controller Circuit Board
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
OFF
ON
100Y
MODEL
SW6 SW5-6 *2
OFF
ON
OFF
ON
120Y
OFF
ON
1 2 3 4 5 6
1 2 3 4 5 6
*
2 SW5 -1 to 5 : Function Switch
P. B.
U
POWER
SUPPLY
3N~
400V 50Hz
TB1
V
W
RED
WHT
BLK
MC
7
L1
L2
L3
N
N. F.
CNAC1
(WHT)
31
CNDC
(PNK)
31
CNL
(BLU)
13
CNAC2
(RED)
31
CNCT
(RED)
1 2
LO1
LO2
LO3
NO
GD1
NI
LI1
LI2
LI3
GD3
S1
S2
S3
CK
2
3
2
3
ACL4
ACL3
ACL2
ACL1
RED
WHT
BLK
BLU
RED
WHT
BLK
BLU
TB2
CN7
(WHT)
3
1
L3-OU
L3-A2
L2-OU
L2-A2
L1-OU
L1-A2
L1-A1
L1-IN
N-IN
CK-OU
X52CA
RED
RED
BLK
BLU
RED
RED
BLK
BLK
WHT
WHT
RED
WHT
BLK
YLW
ORN
BRN
BLK
RED
GRN/YLW
BLK
BLK
CONV. B.
BRN
INDOOR
UNIT
C. B.
TH6TH7
TH4TH3
21S4
t° t° t° t°
LEV-A
CNS
(WHT)
CNAC
(WHT)
CNDC
(PNK)
F2
F1
F3
F4
21S4
(GRN)
CN2
(WHT)
CN4
(WHT)
TH7/6
(RED)
TH3
(WHT)
TH4
(WHT)
TRANS
CNVMNT
(WHT)
CNMNT
(WHT)
CNM
(WHT)
LED1
LED2
X52
SV1
/CH
(GRY)
X54
63H
(YLW)
2
7
1 4 1 2 2 1
1 3
31 1 5
1 14
1 2
1 7
3
1
13
1 2
3 4
31 31
LEV-A
(WHT)
51
SS
(WHT)
X51
31
MS
3~
MF1
CNF1
(WHT)
1
7
63L63H
63L
(RED)
1 3
31
TH34
t°
2 1
TH34
(RED)
63HS
(WHT)
63HS
LEV-B
(RED)
M
LEV-B
51
M
MF2
CNF2
(WHT)
1
7
CN7
(WHT)
1 3 1 2
CN6
(WHT)
1 2
CN5
(RED)
CN2
(WHT)
1 7 1 2
CN4
(WHT)
TB-N
TB-U
TB-V
TB-W
TB-L3
TB-L2
TB-L1
TH8
t°
RS
RED
MS
3~
22
2
CN3S
(WHT)
1
3
CNDM
(WHT)
CN51
(WHT)
1
3
1
5
CN52C
(RED)
1 3
MS
3~
BRN
CY1
CY2
SW7
SW6SW1
SW9
CN31
*1*
1
SW5SW8SW4 SWP
+
-
+
*
1 MODEL SELECT
The black square ( ) indicates a switch position.
PUHZ-SW100YHA.UK PUHZ-SW120YHA.UK
PUHZ-SW100YHA-BS.UK PUHZ-SW120YHA-BS.UK
OCH533D
22
PUHZ-SW100/120YHA WIRING DIAGRAM
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
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
Power Circuit Board
Connection Terminal <U/V/W-Phase>
P. B.
TB-U/V/W
Noise Filter Circuit Board
Connection Terminal
<L1/L2/L3/N-Power Supply
>
N. F.
LI1/LI2/LI3/NI
Connection Terminal
<L1/L2/L3/N-Power Supply
>
LO1/LO2/LO3/NO
Converter Circuit Board
CONV. B.
Connection Terminal <Ground>
GD1, GD3
Connection Terminal <L1-Power Supply>
L1-A1/IN
Connection Terminal <L1-Power Supply>
L1-A2/OU
Connection Terminal <L2-Power Supply>
L2-A2/OU
Connection Terminal <L3-Power Supply>
L3-A2/OU
Connection Terminal
N-IN
Connection Terminal
CK-OU
SYMBOL NAME SYMBOL NAME SYMBOL NAME
Connection Terminal
<L1/L2/L3-Power Supply
>
TB-L1/L2/L3
SW4
SW5
SW6
SW7
SW8
SW9
SWP
CN31
CNDM
CN51
SV1/CH
SS
CNM
LED1, LED2
F1, F2, F3, F4
X51, X52, X54
SW1
C. B.
Connection Terminal
TB-N
52C Relay
X52CA/B
Switch <Manual Defrost, Defect History,
Record Reset, Refrigerant Address>
Switch <Test Operation>
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
Controller Circuit Board
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
OFF
ON
100Y
MODEL
SW6 SW5-6 *2
OFF
ON
OFF
ON
120Y
OFF
ON
1 2 3 4 5 6
1 2 3 4 5 6
*
2 SW5 -1 to 5 : Function Switch
P. B.
U
POWER
SUPPLY
3N~
400V 50Hz
TB1
V
W
RED
WHT
BLK
MC
7
L1
L2
L3
N
N. F.
CNAC1
(WHT)
31
CNDC
(PNK)
31
CNL
(BLU)
13
CNAC2
(RED)
31
CNCT
(RED)
1 2
LO1
LO2
LO3
NO
GD1
NI
LI1
LI2
LI3
GD3
S1
S2
S3
CK
2
3
2
3
ACL4
ACL3
ACL2
ACL1
RED
WHT
BLK
BLU
RED
WHT
BLK
BLU
TB2
CN7
(WHT)
3
1
L3-OU
L3-A2
L2-OU
L2-A2
L1-OU
L1-A2
L1-A1
L1-IN
N-IN
CK-OU
X52CA
RED
RED
BLK
BLU
RED
RED
BLK
BLK
WHT
WHT
RED
BLK BLK
WHT
YLW
ORN
BRN
BLK
RED
GRN/YLW
BLK
BLK
CONV. B.
BRN
INDOOR
UNIT
C. B.
TH6TH7
TH4TH3
21S4
t° t° t° t°
LEV-A
CNS
(WHT)
CNAC
(WHT)
CNDC
(PNK)
F2
F1
F3
F4
21S4
(GRN)
CN2
(WHT)
CN4
(WHT)
TH7/6
(RED)
TH3
(WHT)
TH4
(WHT)
TRANS
CNVMNT
(WHT)
CNMNT
(WHT)
CNM
(WHT)
LED1
LED2
X52
SV1
/CH
(GRY)
X54
63H
(YLW)
2
7
1 4 1 2 2 1
1 3
31 1 5
1 14
1 2
1 7
3
1
13
1 2
3 4
31 31
LEV-A
(WHT)
51
SS
(WHT)
X51
31
MS
3~
MF1
CNF1
(WHT)
1
7
63L
63H
63L
(RED)
1 3
31
TH34
t°
2 1
TH34
(RED)
63HS
(WHT)
63HS
LEV-B
(RED)
M
LEV-B
51
M
MF2
CNF2
(WHT)
1
7
CN7
(WHT)
1 3 1 2
CN6
(WHT)
1 2
CN5
(RED)
CN2
(WHT)
1 7 1 2
CN4
(WHT)
TB-N
TB-U
TB-V
TB-W
L3IN
TB-L2
TB-L1
TH8
t°
RS
RED
MS
3~
22
2
CN3S
(WHT)
1
3
CNDM
(WHT)
CN51
(WHT)
1
3
1
5
CN52C
(RED)
1 3
MS
3~
BRN
CY1
CY2
SW7
SW6SW1
SW9
CN31
*1*
1
SW5SW8SW4 SWP
+
-
+
*
1 MODEL SELECT
The black square ( ) indicates a switch position.
X52CB
TB-L3L3OUT
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
OCH533D
23
PUHZ-SW100YHAR4.UK PUHZ-SW120YHAR4.UK
PUHZ-SW100YHAR4-BS.UK PUHZ-SW120YHAR4-BS.UK
TB1
TB2
MC
MF1, MF2
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
ACL1, ACL2,
ACL3, ACL4
CY1, CY2
CK
RS
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>
Linear Expansion Valve
Reactor
Capacitor
Capacitor
Rush Current Protect Resistor
Power Circuit Board
P. B.
Noise Filter Circuit Board
N. F.
Converter Circuit Board
CONV. B.
SYMBOL
NAME SYMBOL NAME SYMBOL NAME
SW5
SW6
SW7
SW8
SW9
SWP
CNDM
SV1/CH
SV3/SS
CNM
F1, F2, F3, F4
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>
TH34
Thermistor <Comp. Surface>
LEV-A, LEV-B
SW4
SW1
Switch <Manual Defrost, Defect History
Record Reset, Refrigerant Address
>
Switch <Function Switch>
Controller Circuit Board
C. B.
*1 *1
U
POWER
SUPPLY
3N
~
400V 50Hz
TB1
V W
RD
WH
BK
MC
7
L1
L2
L3
N
CNAC1
(WH)
31
CNDC
(PK)
31
CNL
(BU)
13
CNAC2
(RD)
31
CNCT
(RD)
1
2
LO1
LO2
LO3
NO
GD1
NI
LI1
LI2
LI3
GD3
S1
S2
S3
CK
2
3
2
3
ACL4
ACL3
ACL2
ACL1
RD
WH
BK
BU
RD
WH
BK
BU
TB2
CN7
(WH)
3
1
L3-OU
L3-A2
L2-OU
L2-A2
L1-OU
L1-A2
L1-A1
L1-IN
N-IN
CK-OU
X52CA
X52CB
RD
RD
BK
BU
RD
RD
BK
BK
WH
WH
RD
RD
RD
WH
BK
BK
YE
OG
BN
BK
GNYE
BK
BK
TO
INDOOR
UNIT
C. B.
TH6TH7 TH4TH3
21S4
t°
t° t° t°
LEV-A
CNS
(WH)
CNAC
(WH)
CNDC
(PK)
F2
F1
F3
F4
21S4
(GN)
CN2
(RD)
CN4
(WH)
TH7/6
(RD)
TH3
(WH)
TH4
(WH)
TRANS
CNM
(WH)
LED1
LED2
X52
SV1/CH
(GY)
X54
63H
(YE)
2
7
1 4 1 2 2 1
1 3
1
14
1 2
1 7
1
3
13
1 2
3 4
31 31
LEV-A
(WH)
51
SV3/SS
(WH)
X51
31
MF1
CNF1
(WH)
1
7
63L63H
63L
(RD)
1 3
31
TH34
t°
2 1
TH34
(RD)
63HS
(WH)
63HS
LEV-B
(RD)
M
LEV-B
51
M
MF2
CNF2
(WH)
1
7
CN7
(WH)
1 3 1 2
CN6
(WH)
1 2
CN5
(RD)
CN2
(RD)
1 7 1 2
CN4
(WH)
TB-N
TB-U
TB-V
TB-W
TB-L3
TB-L1
L3OUT
TB-L2
L3IN
TH8
t°
RS
MS
3~
22
2
CY1
CY2
SW7
SW6SW1
SW9
SW5SW8SW4 SWP
+
-
+
31
CNDM
(WH)
+
+
+
~~~
~
~
P. B.
N. F.
CONV. B.
MS
3~
MS
3~
8
8
1 2 3 4 5 6 7
1 2 3 4 5 6 7
OFF
ON
100Y
MODEL
SW6
SW5-6 *2
SW5-6 *2
OFF
ON
OFF
ON
120Y
OFF
ON
1 2 3 4 5 6
1 2 3 4 5 6
MODEL
SW6
*1 MODEL SELECT
The black square ( ) indicates a switch position.
*2 SW5 -1 to 5 : Function Switch
OCH533D
24
9 WIRING SPECIFICATIONS
FIELD ELECTRICAL WIRING (power wiring specifications)
Outdoor unit model
SW75V SW100V SW120V SW100, 120Y
Outdoor unit power supply
~/N (single),
50 Hz, 230 V
~/N (single),
50 Hz, 230 V
~/N (single),
50 Hz, 230 V
3N~ (3 ph 4-wires),
50 Hz, 400 V
Outdoor unit input capacity Main switch (Breaker) *1 25 A 32 A 40 A 16 A
Wiring
Wire No. ×
size (mm
2
)
Outdoor unit power supply 3 × Min. 2.5 3 × Min. 4 3 × Min. 6 5 × Min. 1.5
Indoor unit-Outdoor unit *2 3 × 1.5 (Polar) 3 × 1.5 (Polar) 3 × 1.5 (Polar) 3 × 1.5 (Polar)
Indoor unit-Outdoor unit earth *2 1 × Min. 1.5 1 × Min. 1.5 1 × Min. 1.5 1 × Min. 1.5
Remote controller-Indoor unit *3 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar)
Circuit rating
Outdoor unit L-N (single)
Outdoor unit L1-N, L2-N, L3-N (3 phase)
*4 230 V AC 230 V AC 230 V AC 230 V AC
Indoor unit-Outdoor unit S1-S2 *4 230 V AC 230 V AC 230 V AC 230 V AC
Indoor unit-Outdoor unit S2-S3 *4 24 V DC 24 V DC 24 V DC 24 V DC
Remote controller-Indoor unit *4 12 V DC 12 V DC 12 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 mm
2
is used, maximum 50 m.
If 2.5 mm
2
is used and S3 is separated, maximum 80 m.
*3. The 10 m wire is attached in the remote controller accessory.
*4. The gures 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.
S1
S2
S3
S1
S2
S3
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.
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 exible 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 insufcient
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.
Outdoor Unit
3 poles isolator
Power
supply
Isolator
Indoor unit
(Interface unit /
Flow temp.
controller)
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in smoke emission, a re or communication failure.
OCH533D
25
10 REFRIGERANT SYSTEM DIAGRAM
unit: mm (in)
Distributor
Thermistor TH7
(Ambient)
Heat
exchanger
Refrigerant LIQUID pipe
connection [9.52(3/8)
Stop valve
(with service port)
Strainer
#100
Power
receiver
Linear
expansion valve B
Linear expansion valve A
Strainer
#100
Thermistor TH6
(2-phase pipe)
Thermistor TH3
(Liquid)
High pressure
switch 63H
Thermistor TH4
(Discharge)
Thermistor TH34
P.B
TH8
(Comp. surface)
Compressor
Strainer
#50
Strainer
#100
Strainer
#100
4-way valve
Charge plug
(Low pressure)
Charge plug
(High pressure)
Stop valve
(with service port)
Refrigerant GAS pipe
connection [15.88(5/8)
Pressure
sensor 63HS
Distributor
Thermistor TH7
(Ambient)
Heat
exchanger
Refrigerant GAS pipe
connection ø15.88(5/8)
Refrigerant LIQUID pipe
connection ø9.52(3/8)
Stop valve
(with service port)
Strainer
#100
Power
receiver
Linear
expansion valve B
Linear expansion valve A
Strainer
#100
Strainer
#100
Thermistor TH6
(2-phase pipe)
Thermistor TH3
(Liquid)
Charge plug
(Low pressure)
Charge plug
(High pressure)
High pressure
switch 63H
Thermistor TH4
(Discharge)
Thermistor TH34
(Comp. surface)
Compressor
Strainer
#50
4-way valve
Strainer
#100
Strainer
#100
Ball valve
Refrigerant flow in cooling
Refrigerant flow in heating
Pressure
sensor 63HS
Low pressure
switch 63L
P.B
TH8
PUHZ-SW75VHA.UK PUHZ-SW75VHAR3.UK PUHZ-SW75VHAR4.UK
PUHZ-SW75VHA-BS.UK PUHZ-SW75VHAR3-BS.UK PUHZ-SW75VHAR4-BS.UK
COMP
H/P SW
L/P SW
REV/V
Charge plug
P-Sensor
LEV-A
LEV-B
TH3
TH4
TH6
TH7
TH34
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 LE
V
Heating:Primary LEV Cooling:Second
ary 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
Compressor
High pressure switch (63H)
Low pressure switch (63L)
Reversing (4-way) valve (21S4)
Charge plug
Pressure sensor (63HS)
Linear expansion valve -A
Linear expansi
on valve -B
Liquid temperature thermistor
Discharge
temperature thermistor
2-phase pipe temperature thermistor
Ambient temperature thermistor
Comp.surface temperature thermistor
Power Receiver
Symbol Part name
Detail
Power Receiver
PUHZ-SW100VHA.UK
PUHZ-SW100VHAR3.UK PUHZ-SW100VHAR4.UK
PUHZ-SW100VHA-BS.UK
PUHZ-SW100VHAR3-BS.UK PUHZ-SW100VHAR4-BS.UK
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-SW120VHA.UK
PUHZ-SW120VHAR3.UK PUHZ-SW120VHAR4.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW120VHAR3-BS.UK PUHZ-SW120VHAR4-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
OCH533D
26
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 pump-
down 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
27
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)
The trouble is reoccurring.
Displayed
Judge what is wrong and take a corrective action according to
“11-2. SELF-DIAGNOSIS ACTION TABLE”.
Not displayed
Conduct troubleshooting and ascertain the cause of the
trouble.
The trouble is not reoccurring.
Logged
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 nishing
service.
3
There is no abnormality in electrical component, controller
board, etc.
Not logged
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.
OCH533D
28
11-2. SELF-DIAGNOSIS ACTION TABLE
<Abnormalities detected when the power is turned on>
Note: Refer to indoor unit section for code P and code E.
Check code
Abnormal point and detection method
Case
Judgment and action
None —
1
No voltage is supplied to terminal
block (TB1) of outdoor unit.
a) Power supply breaker is
turned off.
b) Contact failure or
disconnection of power
supply terminal
c) Open phase (L or N phase)
2 Electric power is not charged
to power supply terminal of
outdoor power circuit board.
a) Contact failure of power
supply terminal
b) Open phase on the outdoor
power circuit board
SW75V: Disconnection of
connector R or S
SW100/120V:
Disconnection of connector
LI or NI
3 Electric power is not supplied
to outdoor controller circuit
board.
a) Disconnection of connector
(CNDC)
4 Disconnection of reactor (DCL
or ACL)
5 Disconnection of outdoor noise
filter circuit board or parts failure
in outdoor noise filter circuit
board
As for SW75VHA(R3), it is
especially needed to check the
resistance RS on the noise filter
circuit board.
6 Defective outdoor power circuit
board
7 Defective outdoor controller
circuit board
1 Check following items.
a) Power supply breaker
b) Connection of power supply terminal block
(TB1)
c) Connection of power supply terminal block
(TB1)
2 Check following items.
a) Connection of power supply terminal block
(TB1)
b) Connection of terminal on outdoor power
circuit board
SW75V: Check connection of the connec-
tor R or S. Refer to "11-6. TEST
POINT DIAGRAM".
SW100/120V: Check connection of the
connector LI or NI.
Refer to "11-6. TEST POINT
DIAGRAM".
3 Check connection of the connector (CNDC)
on the outdoor controller circuit board.
Check connection of the connector, CNDC
on the outdoor power circuit board(V)/the
noise filter(Y). Refer to "11-6. TEST POINT
DIAGRAM".
4 Check connection of reactor. (DCL or ACL)
SW75VHA(R3)
:
Check connection of “LO” and
“NO” on the outdoor noise filter
circuit board. Check connection
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"
and "DCL2" on the outdoor
power circuit board. Refer to
"11-6. TEST POINT DIAGRAM".
5 a) Check connection of outdoor noise filter
circuit board.
b) Replace outdoor noise filter circuit board.
Refer to "11-6. TEST POINT DIAGRAM".
6 Replace outdoor power circuit board.
7 Replace controller board (When items above
are checked but the units cannot be repaired).
F5
63H connector open
Abnormal if 63H connector circuit is open for
3 minutes continuously after power supply.
63H: High-pressure switch
1 Disconnection or contact failure
of 63H connector on outdoor
controller circuit board
2 Disconnection or contact failure
of 63H
3 63H is working due to defective
parts.
4 Defective outdoor controller
circuit board
1 Check connection of 63H connector on
outdoor controller circuit board.
Refer to "11-6. TEST POINT DIAGRAM".
2 Check the 63H side of connecting wire.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
F3
63L connector open (SW100/120 only)
Abnormal if 63L connector circuit is open for
3 minutes continuously after power supply.
63L: Low-pressure switch
1 Disconnection or contact failure
of 63L connector on outdoor
controller circuit board
2 Disconnection or contact failure
of 63L
3 63L is working due to
refrigerant leakage or defective
parts.
4 Defective outdoor controller
circuit board
1 Check connection of 63L connector on
outdoor controller circuit board.
Refer to "11-6. TEST POINT DIAGRAM".
2 Check the 63L side of connecting wire.
3 Check refrigerant pressure.
Charge additional refrigerant.
Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
OCH533D
29
Check code
Abnormal point and detection method Judgment and action
Eb
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.
EC
Startup time over
The unit cannot finish startup process
within 4 minutes after power on.
Case
1 Contact failure of indoor/
outdoor unit connecting wire
2 Diameter or length of indoor/
outdoor unit connecting wire is
out of specified capacity.
7 2 or more outdoor units have
refrigerant address “0” .
(In case of group control)
8 Noise has entered into power
supply or indoor/outdoor unit
connecting wire.
1 Contact failure or miswiring of
indoor/outdoor unit connecting
wire
2 Diameter or length of indoor/
outdoor unit connecting wire is
out of specified capacity.
4 Defective transmitting receiving
circuit of outdoor controller circuit
board
5 Defective transmitting receiving
circuit of indoor controller board
6 Defective indoor power board
7 2 or more outdoor units have
refrigerant address “0” .
(In case of group control)
8 Noise has entered into power
supply or indoor/outdoor unit
connecting wire.
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.
1 Check disconnection or looseness or polarity
of indoor/outdoor unit connecting wire of
indoor and outdoor units.
2 Check 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.
3 Check 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.
7
Check if refrigerant addresses (SW1-3 to
SW1-6 on outdoor controller circuit board) are
overlapping in case of group control system.
8 Check transmission path, and remove the
cause.
Note: The descriptions above, 1–8, are for
EA, Eb and EC.
1 Contact failure or miswiring of
indoor/outdoor unit connecting
wire
2 Diameter or length of indoor/
outdoor unit connecting wire is
out of specified capacity.
3 Excessive number of indoor
units are connected to 1
outdoor unit (2 units or more).
4 Defective transmitting receiving
circuit of outdoor controller
circuit board
5 Defective transmitting receiving
circuit of indoor controller board
6 Defective indoor power board
7 2 or more outdoor units have
refrigerant address “0” .
(In case of group control)
8 Noise has entered into power
supply or indoor / outdoor unit
connecting wire.
EA
F9
2 connector open (SW100/120 only)
Abnormal if both 63H and 63L connector
circuits are open for three minutes
continuously after power supply.
63H: High-pressure switch
63L: Low-pressure switch
1 Disconnection or contact failure
of connector (63H,63L) on
outdoor controller circuit board
2 Disconnection or contact failure
of 63H, 63L
3 63H and 63L are working due
to defective parts.
4 Defective outdoor controller
board
1 Check connection of connector (63H,63L) on
outdoor controller circuit board.
Refer to "11-6. TEST POINT DIAGRAM".
2 Check the 63H and 63L side of connecting
wire.
3 Check continuity by tester.
Replace the parts if the parts are defective.
4 Replace outdoor controller circuit board.
EE
Incorrect connection
The outdoor unit does not receive the signals of I/F or FTC.
1 A device other than Interface
unit or Flow temp. controller
unit is connected to the unit.
1 Connect I/F or FTC to the unit.
OCH533D
30
Check code
Abnormal point and detection method Judgment and action
U1
High pressure (High-pressure switch
63H operated)
Abnormal if high-pressure switch 63H
operated (4.15 MPa) during compressor
operation.
63H: High-pressure switch
1 Defective operation of stop
valve (Not fully open)
2 Clogged or broken pipe
3 Locked outdoor fan motor
4 Malfunction of outdoor fan
motor
5 Short cycle of outdoor unit
6 Dirt of outdoor heat exchanger
7 Decreased airflow caused by
defective inspection of outside
temperature thermistor
(It detects lower temperature
than actual temperature.)
8 Disconnection or contact failure
of connector (63H) on outdoor
controller board
9 Disconnection or contact failure
of 63H connection
0 Defective outdoor controller
board
1 Defective action of linear
expansion valve
2 Malfunction of fan driving circuit
1 Check if stop valve is fully open.
2 Check piping and repair defect.
3–6 Check outdoor unit and repair defect.
7 Check 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".)
8–0 Turn 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.
1 Check linear expansion valve.
Refer to "11-4. HOW TO CHECK THE
PARTS".
2 Replace outdoor controller board.
Case
U2
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.)
1 Disconnection or contact failure
of connector (TH4/TH34) on
the outdoor controller circuit
board
2 Defective thermistor
3 Defective outdoor controller
circuit board
1 Check connection of connector (TH4/TH34)
on the outdoor controller circuit board.
Check breaking of the lead wire for
thermistor (TH4/TH34). Refer to "11-6. TEST
POINT DIAGRAM".
2 Check resistance value of thermistor (TH4/
TH34) or temperature by microprocessor.
(Thermistor/TH4/TH34: Refer to "11-4. HOW
TO CHECK THE PARTS".)
(SW2 on A-Control Service Tool: Refer to
"11-7.
FUNCTION OF SWITCHES, CONNECTORS
AND JUMPERS".
)
3 Replace outdoor controller board.
<Abnormalities detected while unit is operating>
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.
(2) Abnormal if discharge superheat
(Cooling: TH4−T
63HS /
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:.
1 Overheated compressor
operation caused by shortage
of refrigerant
2 Defective operation of stop
valve
3 Defective thermistor
4 Defective outdoor controller
board
5 Defective action of linear
expansion valve
6 Clogging with foreign objects in
refrigerant circuit
Note: Clogging occur in the parts
which become below
freezing point when water
enters in refrigerant circuit.
1 Check intake superheat.
Check leakage of refrigerant.
Charge additional refrigerant.
2 Check if stop valve is fully open.
34
Turn 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.
5 Check linear expansion valve.
Refer to "11-4. HOW TO CHECK THE
PARTS".
6 After recovering refrigerant, remove water
from entire refrigerant circuit under vacuum
more than 1 hour.
OCH533D
31
Check code
Abnormal point and detection method
Case
Judgment and action
U5
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
1 The outdoor fan motor is
locked.
2 Failure of outdoor fan motor
3 Air flow path is clogged.
4 Rise of ambient temperature
5 Defective thermistor
6 Defective input circuit of
outdoor power circuit board
7
Failure of outdoor fan drive circuit
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
CHECK THE PARTS".)
(SW2 on A-Control
Service Tool: Refer to
"11-7. FUNCTION OF
SWITCHES, CONNECTORS AND JUMPERS".
)
6 Replace outdoor power circuit board.
7 Replace outdoor controller circuit board.
U4
Open/short of outdoor unit thermistors
(TH3, TH6, TH7, and TH8)
Abnormal if open or short is detected
during compressor operation.
Open detection of thermistors TH3 and
TH6 is inoperative for 10 seconds to 10
minutes after compressor starting and 10
minutes after and during defrosting.
Note:
Check which unit has abnormality in its
thermistor by switching the mode of SW2.
(PAC-SK52ST) (Refer to "11-7. FUNCTION
OF SWITCHES, CONNECTORS AND
JUMPERS". )
Note: SW100/120V,
Heat sink
thermistor(TH8) is in the power module.
1
Check connection of connector (TH3, TH7/6) on the
outdoor controller circuit board. Check connection
of connector (CN3) on the outdoor power circuit
board. Check breaking of the lead wire for thermistor
(TH3, TH6,TH7,TH8). Refer to "11-6. TEST POINT
DIAGRAM".
2 Check resistance value of thermistor (TH3,
TH6,TH7,TH8) or check temperature by
microprocessor. (Thermistor/TH3,TH6,TH7,TH8:
Refer to "11-4. HOW TO CHECK THE PARTS".) (SW2
on A-Control Service Tool: Refer to "11-7. FUNCTION
OF SWITCHES, CONNECTORS AND JUMPERS".)
3 Replace outdoor controller circuit board.
Note: Emergency operation is available in case of
abnormalities of TH3, TH6 and TH7.
1 Disconnection or contact failure
of connectors
Outdoor controller circuit board
:
TH3, TH7/6
Outdoor power circuit board
:
CN3
2 Defective thermistor
3 Defective outdoor controller
circuit board
( )
U6
Power module
Check abnormality by driving power module
in case overcurrent is detected.
(UF or UP error condition)
1 Outdoor stop valve is closed.
2 Decrease of power supply voltage
3 Looseness, disconnection or
converse of compressor wiring
connection
4 Defective compressor
5 Defective outdoor power circuit
board
1 Open 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.
U7
Too low superheat due to low discharge
temperature
Abnormal if discharge superheat is
continuously detected less than or equal
to−15: for 3 minutes even though linear
expansion valve has minimum open pulse after
compressor starts operating for 10 minutes.
1 Disconnection or loose
connection of discharge
temperature thermistor (TH4)
2 Defective holder of discharge
temperature thermistor
3
Disconnection or loose connection
of linear expansion valve’s coil
4 Disconnection or loose
connection of linear expansion
valve’s connector
5
Defective linear expansion valve
12 Check the installation conditions of
discharge temperature thermistor (TH4).
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 "11-
4. HOW TO CHECK THE PARTS".
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
U8
Outdoor fan motor
Abnormal if rotational frequency of the fan
motor is not detected during DC fan motor
operation.
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 Failure in the operation of the
DC fan motor
2 Failure in the outdoor circuit
controller board
1 Check or replace the DC fan motor.
2 Check 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.)
OCH533D
Check Code
Abnormal point and detection method
Case
Judgment and action
32
U9
Detailed
codes
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.
To find out the detail history (latest) about U9 error, turn ON SW2-1, 2-2 and 2-6.
Refer to "11-7. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS".
01
Overvoltage error
• Increase in DC bus voltage to
SW75VHA(R3): 420 V
SW75VHAR4: 400 V
SW100, 120V: 400 V
SW100, 120Y: 760 V
1
Abnormal increase in power source voltage
2 Disconnection of compressor wiring
3 Defective outdoor power circuit
board
4
Compressor has a ground fault.
1
Check the field facility for the power supply.
2
Correct 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.
02
Undervoltage error
• Instantaneous decrease in DC
bus voltage to
SW75, 100, 120V: 200 V
SW100, 120Y: 350 V
1 Decrease in power source voltage,
instantaneous stop
2
Disconnection or loose connection of
CN52C on the outdoor power circuit
board/controller circuit board (SW100,
120V)
3
Disconnection or loose connection
of CN52C on the outdoor noise filter
circuit board/controller circuit board
(SW75VHA(R3))
4
Defective converter drive circuit in
outdoor power circuit board (SW·V)
5
Defective 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)
8
Disconnection or loose connection of
rush current protect resistor RS (SW·Y)
9 Defective rush current protect resis-
tor 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)
1
Check the field facility for the power
supply.
23 Check CN52C wiring. (SW·V exclud-
ing SW75VHAR4)
4 Replace outdoor power circuit board.
(SW
·
V)
5 Replace outdoor power circuit board.
(SW
100,120
V/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. (SW
100,120
V)
1 Check CN2 wiring. (SW
100,120
V)
2 Replace outdoor controller circuit
board. (SW
100,120
V)
04
Input current sensor error/
L1-phase open error
• Decrease in input current
through outdoor unit to 0.1 A
only if operation frequency is
more than or equal to 40 Hz
or compressor current is more
than or equal to 6 A.
1
L1-phase open
(SW·Y)
2 Disconnection or loose connection
between TB1 and outdoor noise filter
circuit board (SW75V(R3), SW
·
Y)
3
Disconnection or loose connection of
CN5 on the outdoor power circuit board/
CNCT on the outdoor noise filter board
(SW75V(R3), SW·Y)
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
6
Defective outdoor controller circuit board
1 Check 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)
4 Replace outdoor noise filter circuit
board. (SW·Y)
5 Replace outdoor power circuit board.
6 Replace outdoor controller circuit board.
08
Abnormal power synchronous
signal
• No input of power synchronous
signal to power circuit board
• Power synchronous signal
of 44 Hz or less, or 65 Hz or
more is detected on power
circuit board.
1
Distortion of power source voltage,
Noise superimposition.
2 Disconnection or loose connection
of earth wiring
3 Disconnection or loose connection
of CN2 on the outdoor power circuit
board /controller circuit board
4
Defective power synchronous signal
circuit in outdoor controller circuit board
5 Defective power synchronous signal
circuit in outdoor power circuit board
1 Check 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.
OCH533D
Check Code
Abnormal point and detection method Judgment and action
Case
33
UF
Compressor overcurrent interruption
(When compressor locked)
Abnormal if overcurrent of DC bus or
compressor is detected within 30 seconds
after compressor starts operating.
1 Stop valve is closed.
2 Decrease of power supply
voltage
3 Looseness, disconnection or
converse of compressor wiring
connection
4 Defective compressor
5 Defective outdoor power board
1 Open 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.
Refer to "11-4. HOW TO CHECK THE PARTS".
5 Replace outdoor power circuit board.
Ud
Overheat protection
Abnormal if liquid thermistor (TH3), condensing temperature T
63HS detects 70:
or more during compressor operation.
1
Defective outdoor fan (fan
motor) or short cycle of outdoor
unit during cooling operation
2 Defective liquid thermistor
(TH3), condensing temperature
T
63HS
3
Defective outdoor controller board
1 Check outdoor unit air passage.
23 Turn the power off and on again to check
the check code. If U4 is displayed, follow
the U4 processing direction.
UE
Abnormal pressure of pressure sensor
(63HS)
Abnormal if pressure sensor (63HS)
detects 0.1 MPa or less.
Detection is inoperative for 3 minutes after
compressor starting and 3 minutes after
and during defrosting.
1 Disconnection or contact
failure of connector (63HS) on
the outdoor controller circuit
board
2 Defective pressure sensor
3 Defective outdoor controller
circuit board
1 Check 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". )
3 Replace outdoor controller board.
UH
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.
1 Disconnection of compressor
wiring
2 Defective circuit of current
sensor on outdoor power circuit
board
3 Decrease of power supply
voltage
4 Leakage 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).
2 Replace outdoor power circuit board.
3 Check the facility of power supply.
4 Check leakage of refrigerant.
UL
Low pressure (63L operated)
(SW100/120 only)
Abnormal if 63L is operated (under
−0.03MPa) during compressor operation.
63L: Low-pressure switch
1 Stop valve of outdoor unit is
closed during operation.
2 Disconnection or loose
connection of connector (63L)
on outdoor controller board
3 Disconnection or loose
connection of 63L
4 Defective outdoor controller
board
5 Leakage or shortage of
refrigerant
6 Malfunction of linear expansion
valve
1 Check stop valve.
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.
5 Correct to proper amount of refrigerant.
6 Check linear expansion valve.
Refer to
"11-4. HOW TO CHECK THE PARTS".
10
PFC error (Overvoltage/
Undervoltage/Overcurrent)
• PFC detected any of the following
a) Increase of DC bus voltage to
420 V (SW75VHA(R3),SW
·V
),
400 V (SW75VHAR4)
b) Decrease in PFC control
voltage to 12 V DC or lower
c) Increase in input current to
50A peak
(SW75V only)
1
Abnormal increase in power
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
6
Defective reactor (ACL)
7
Disconnection or loose
connection of CN2 on the
outdoor power circuit board/
controller circuit board
PFC/IGBT error (Undervoltage)
•
When Compressor is running,
DC bus voltage stays at 310V or
lower for consecutive 10 seconds
(SW·V only)
1 Incorrect switch settings on the
outdoor controller circuit board
for model select
2
Defective outdoor power circuit
board
3
Defective outdoor controller circuit
board
1 Correction of a model select
2 Replace outdoor power circuit board.
3 Replace outdoor controller circuit board.
12 Check 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 Correct the wiring of reactor (ACL).
5 Replace outdoor power circuit board.
6 Replace reactor (ACL).
7 Check CN2 wiring.
20
Detailed
codes
U9
OCH533D
Check Code
Abnormal point and detection method Judgment and action
Case
34
E1
or
E2
Remote controller control board
1 Abnormal if data cannot be normally
read from the nonvolatile memory of the
remote controller control board.
(Check code: E1)
2 Abnormal if the clock function of remote
controller cannot be normally operated.
(Check code: E2)
1 Defective remote controller
1 Replace remote controller.
UP
E0
or
E4
Remote controller transmission error (E0)/
signal receiving error (E4)
1 Abnormal if main or sub remote
controller cannot receive normally
any transmission from indoor unit of
refrigerant address “0” for 3 minutes.
(Check code : E0)
2 Abnormal if sub remote controller could
not receive any signal for 2 minutes.
(Check code: E0)
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)
1 Check disconnection or looseness of indoor
unit or transmission wire of remote controller.
2 Set one of the remote controllers “main” if
there is no problem with the action above.
3 Check 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,
4 Diagnose 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
indoor controller board.
b) When “RC NG” is displayed,
Replace remote controller.
c) When "RCE3" or "ERC00-66" is displayed,
noise may be causing abnormality.
Note: If the unit is not normal after replacing
indoor controller board in group control,
indoor controller board of address “0”
may be abnormal.
1 Contact failure at transmission
wire of remote controller
2 All remote controllers are set
as “sub” remote controller.
In this case, E0 is displayed
on remote controller, and E4
is displayed at LED (LED1,
LED2) on the outdoor controller
circuit board.
3 Miswiring of remote controller
4 Defective transmitting receiving
circuit of remote controller
5 Defective transmitting receiving
circuit of indoor controller board
of refrigerant address “0”
6 Noise has entered into the
transmission wire of remote
controller.
Compressor overcurrent interruption
Abnormal if overcurrent DC bus or
compressor is detected after compressor
starts operating for 30 seconds.
1 Stop valve of outdoor unit is
closed.
2 Decrease of power supply
voltage
3 Looseness, disconnection or
converse of compressor wiring
connection
4 Defective fan of outdoor units
5 Short cycle of outdoor units
6 Defective input circuit of
outdoor controller board
7 Defective compressor
8 Defective outdoor power circuit
board
9 Dip switch setting difference of
outdoor controller circuit board
1 Open 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 outdoor fan.
5 Solve short cycle.
6 Replace 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.
7 Check compressor. Refer to "11-4. HOW TO
CHECK THE PARTS".
8 Replace outdoor power circuit board.
9 Check the DIP switch setting of outdoor
controller circuit board.
OCH533D
35
E9
Indoor/outdoor unit communication error
(Transmitting error) (Outdoor unit)
1
Abnormal 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.
1 Indoor/ outdoor unit connecting
wire has contact failure.
2 Defective communication circuit
of outdoor controller circuit board
3 Noise has entered power supply.
4 Noise has entered indoor/
outdoor unit connecting wire.
1 Check disconnection or looseness of indoor/
outdoor unit connecting wire.
2–4 Turn the power off, and on again to
check. Replace outdoor controller circuit
board if abnormality is displayed again.
EF
Non defined check code
This code is displayed when non defined
check code is received.
1 Noise has entered transmission
wire of remote controller.
2 Noise has entered indoor/
outdoor unit connecting wire.
3 Outdoor unit is not inverter
models.
12 Turn the power off, and on again to check.
Replace indoor controller board or outdoor
controller circuit board if abnormality is
displayed again.
3 Replace outdoor unit with inverter type
outdoor unit.
E8
Indoor/outdoor unit communication error
(Signal receiving error) (Outdoor unit)
Abnormal if outdoor controller circuit board
could not receive anything normally for 3
minutes.
1 Contact failure of indoor/
outdoor unit connecting wire
2 Defective communication circuit
of outdoor controller circuit board
3 Defective communication circuit
of indoor controller board
4 Noise has entered into indoor/
outdoor unit connecting wire.
1 Check disconnection or looseness of indoor/
outdoor unit connecting wire of indoor or
outdoor units.
2–4 Turn the power off, and on again to
check. Replace indoor controller board
or outdoor controller circuit board if
abnormality is displayed again.
E3
or
E5
Remote controller transmission error (E3)/
signal receiving error (E5)
1 Abnormal if remote controller could not
find blank of transmission path for 6
seconds and could not transmit.
(Check code: E3)
2 Remote 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)
1 Abnormal if indoor controller board could
not find blank of transmission path.
(Check code: E5)
2 Indoor controller board 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: E5)
1 Set a remote controller to main, and the
other to sub.
2 Remote controller is connected with only one
indoor unit.
3 The address changes to a separate setting.
4–6 Diagnose remote controller.
a) When “RC OK” is displayed, remote
controllers have no problem.
Turn the power off, and on again to check.
When becoming abnormal again, replace
indoor controller board.
b) When “RC NG” is displayed, replace
remote controller.
c)
When “RC E3” or “ERC 00-66” is
displayed, noise may be causing
abnormality.
1 2 remote controller are set as
“main.”
(In case of 2 remote controllers)
2 Remote controller is connected
with 2 indoor units or more.
3 Repetition of refrigerant
address
4 Defective transmitting receiving
circuit of remote controller
5 Defective transmitting receiving
circuit of indoor controller board
6 Noise has entered into
transmission wire of remote
controller.
Note: Check LED display on the outdoor
controller circuit board. (Connect
A-control service tool, PAC-SK52ST.)
1
Check disconnection or looseness of
Interface unit/Flow temp. controller or
outdoor unit connecting wire of Interface unit/
Flow temp. controller or outdoor unit.
2–4
Turn the power off, and on again to check.
If abnormality generates again, replace
Interface unit/Flow temp. controller or
outdoor controller circuit board.
Interface unit/Flow temp. controller
or outdoor unit communication error
(Signal receiving error)
1
Abnormal if Interface unit/Flow temp.
controller cannot receive any signal
normally for 6 minutes after turning the
power on.
2
Abnormal if Interface unit/Flow temp.
controller cannot receive any signal
normally for 3 minutes.
1
Contact failure, short circuit
or, miswiring (converse wiring)
of Interface unit/Flow temp.
controller or outdoor unit
connecting wire
2
Defective transmitting receiving
circuit of outdoor controller
circuit board
3
Defective transmitting receiving
circuit of Interface unit/Flow
temp. controller
4
Noise has entered into Interface
unit/Flow temp. controller or
outdoor unit connecting wire.
E6
Check code Abnormal point and detection method Judgment and action
Case
Ed
Serial communication error
1
Abnormal if serial co
mmunication between
outdoor controller circuit board and
outdoor power circuit board is d
efective.
1 Breaking of wire or contact
failure of connector CN2
between the outdoor controller
circuit board and the outdoor
power circuit board
2 Breaking of wire or contact
failure of connector CN4
between the outdoor controller
circuit board and the outdoor
power circuit board
3 Defective communication circuit
of outdoor power circuit board
4 Defective communication circuit
of outdoor controller circuit board
for outdoor power circuit board
12 Check connection of each connector CN2
and CN4 between the outdoor controller
circuit board and the outdoor power circuit
board.
3 Replace outdoor power circuit board.
4 Replace outdoor controller circuit board.
OCH533D
Check Code Abnormal point and detection method Judgment and action
Case
36
11-3. TROUBLESHOOTING
Phenomena
Factor Countermeasure
1. Remote controller display does not
work.
2. “PLEASE WAIT” display is remained
on the remote controller.
1 At longest 2 minutes after the power supply “PLEASE
WAIT” is displayed to start up.
2 Communication error between the remote controller
and indoor unit
3 Communication error between the indoor and outdoor
unit
4 Outdoor unit protection device connector is open.
1 12 V DC is not supplied to remote controller.
(Power supply display
is not indicated on LCD.)
2 12–15 V DC is supplied to remote controller, however,
no display is indicated.
• “PLEASE WAIT” is not displayed.
• “PLEASE WAIT” is displayed.
1 Check 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.
2 Check the following.
• Failure of remote controller if “PLEASE
WAIT” is not displayed
• Refer to No.2 below if “PLEASE WAIT”
is displayed.
1 Normal operation
2 Self-diagnosis of remote controller
3 ”PLEASE WAIT” is displayed for 6 minutes
at most in case of indoor/outdoor unit
communication error. Check LED3 on indoor
controller board.
(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.
4 Check LED display on outdoor controller
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".
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.
1 Overcharge of refrigerant
2
Defective refrigerant circuit (clogs)
3
Malfunction of linear expansion valve
4 Reduced water flow
· Clogged filter
· Leakage of water
5 High temperature
· Over-load
· Inlet water is too warm.
6 Defective water pump
12 Check operating condition of refrigerant
circuit.
3 Check linear expansion valve.
45 Check water piping.
6 Check water pump.
Ambient temperature (TH7)
stage-g
stage-f
stage-e
stage-d
stage-c
stage-b
stage-a
[°C]
Tcond
stage-a stage-b stage-c stage-d stage-e stage-f stage-g
−18 −17 −15 −14 −12 −11 −9 −8 −6 −5 −3 −2
63 62 61 60 59 57 51
Tcond
SW75
SW100/120
63 61 60 58 56 53 50
stage-s
61
61
stage-s
27 28
P6
1–3
Check resistance value of thermistor.
0:
...
15.0 k"
10:
.....
9.6 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.
2
Check 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.
4
Check 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.
1
Defective thermistor character-
istics
2
Contact failure of interface unit/
Flow temp. controller
Refer to the indoor unit's Instal-
lation Manual for TH5 connection.
3
Breaking of wire or contact
failure of thermistor wiring
4
Defective PCB of interface
unit/Flow temp. controller
Actual tank temperature thermistor (TH5)
1
The unit is 3-minute resume preven-
tion mode if short/open of thermistor is
detected. Abnormal if the unit does not
reset normally after 3 minutes. (The unit
returns to normal operation, if it has been
reset normally)
2
Constantly detected during cooling,
heating, heating ECO, anti freeze and
hot water operation.
P9
30:
.....
4.3 k"
40:
.....
3.0 k"
OCH533D
Factor
37
3. When pressing the remote controller
operation switch, the OPERATION
display is appeared but it will be
turned off soon.
1 After cancelling to select function from the remote
controller, the remote controller operation switch will
be not accepted for approx. 30 seconds.
1 Normal operation
Phenomena
Countermeasure
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
1• Discharging temperature and indoor heat
exchanger temperature does not rise.
Inspect the failure by checking discharg-
ing pressure.
• Replace linear expansion valve.
2• If refrigerant leaks, discharging tempera
ture rises and LEV opening increases.
Inspect leakage by checking the tem-
perature 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.
8. 1For 3 minutes after temperature
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.)
12Normal operation
(For protection of compressor)
12Normal operation
4. Even controlling by the wireless
remote controller, no beep is heard
and the unit does not start operating. Operation display is indicated
on wireless remote controller.
1The pair number settings of the wireless remote
controller and indoor controller board are mismatched.
1Check the pair number settings.
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
supply ON.
2Local remote controller operation is prohibited.
• 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.
1Normal operation
2Normal operation
3Check the phenomena No.2.
6. Remote controller display works
normally and the unit performs cooling operation, however, the capacity
cannot be fully obtained. (The air
does not cool well.)
1Refrigerant shortage
2Filter clogging
3Heat exchanger clogging
4Air duct short cycle
1• 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.
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 tem-
perature rises and discharging pressure
increases. Check if heat exchanger is
clogged by inspecting discharging pressure.
• Clean the heat exchanger.
4Remove the blockage.
OCH533D
38
Phenomena Countermeasure
A owing water sound or occasional hissing sound is heard.■
These sounds can be heard when refrigerant and/or water is (are) owing in the in-
door unit or refrigerant pipe, or when the refrigerant and/or water is (are) chugging.
Water does not heat or cool well.
■
Clean the lter of water piping. (Flow is reduced when the lter 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 evapo-
rates 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.
“
” appears 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.
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
,
SIMPLE
, or
AUTO OFF
appears in the
remote controller display.
“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
Cause
Wired remote controller LED 1, 2 (PCB in outdoor unit)
PLEASE WAIT
PLEASE WAIT → Check code
Display messages do not
appear even when operation
switch is turned ON (operation
lamp does not light up).
For about 2
minutes after
power-on
Subsequent to
about 2 minutes
after power-on
After LED 1, 2 are lighted, LED 2 is
turned off, then only LED 1 is
Only LED 1 is lighted. →
LED 1, 2 blink.
Only LED 1 is lighted.
→
LED 1 blinks twice,
LED 2 blinks once.
•
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.
lighted.
(Correct operation)
OCH533D
39
How long is “PLEASE WAIT”
kept being displayed on the
remote controller?
6 minutes
or more
2 minutes
or less
2 to 6
minutes
NO
NO
YES
YES
Are any check codes
displayed on the
remote controller?
Are any check codes
displayed on the LED?
Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller.
Check the display time of “PLEASE WAIT”
after turning on the main power.
•
“PLEASE WAIT”
will be displayed
during the start-up
diagnosis after turning
on the main power.
• Normal
The start-up diagnosis will
be over in around 2 minutes.
• Miswiring of indoor/
outdoor connecting
wire
• Breaking of indoor/
outdoor connecting
wire (S3)
• Defective indoor
controller board
• Defective outdoor
controller circuit
board
• 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.
• Defective indoor
controller board
• Defective remote
controller
Check the LED display of the
outdoor controller circuit board.
Diagnosis flow
Cause
Inspection method and
troubleshooting
OCH533D
40
198 to 264 V AC?
198 to 264 V AC?
198 to 264 V AC?
12 to 16 V DC?
12 to 16 V DC?
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
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.
Check the voltage among L(L3) and
N on the terminal block (TB1) of the
outdoor power circuit board.
Check the voltage of indoor
controller board (CN2D).
Check the voltage of the unit after
removing the indoor power board
(CN2S).
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.
•
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
power board
• Replace the indoor
power board.
• Defective indoor
controller board
• Replace the indoor
controller board.
• Miswiring, breaking
or poor connection of
indoor/outdoor
connecting wire
•
Check if there is miswiring
or breaking of wire.
Symptoms: Nothing is displayed on the remote controller. 1
Diagnosis flow Cause
Inspection method and
troubleshooting
LED display of the indoor
controller board
LED1 :
LED2 :
LED3 :
OCH533D
41
198 to 264 V AC?
Are there looseness or
disconnection of the indoor/
outdoor connecting wire?
Is anything displayed?
17 to 28 V DC?
Is “E8” displayed?
Can all the indoor
unit be operated?
Check the voltage between S2
and S3 on the terminal block of
the outdoor unit.
NO
YES
Not lighting.
Blinking.
NO
YES
NO
YES
Not displayed.
Displayed.
YES
NO
YES
NO
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.
Check the refrigerant address of
the outdoor unit. (SW1-3 to 1-6)
Check the looseness or disconnection
of the indoor/outdoor connecting wire.
Check the LED display of the
outdoor unit after turning on the
main power again.
Can the unit be restarted?
•
Breaking or poor contact
of the indoor/outdoor
connecting wire
• Fix the breaking or poor
contact of the indoor/outdoor
connecting wire.
• Defective outdoor
controller circuit
board
• Replace the outdoor
controller circuit board.
• 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 indoor
power board
• Replace the indoor
power board.
• Defective outdoor
power circuit board
• Replace the outdoor
power circuit board.
• Defective indoor
controller board
•
Replace the indoor controller
board of the indoor unit which
does not operate.
• Defective outdoor
controller circuit
board
• Replace the outdoor
controller circuit board.
• Influence of
electromagnetic noise
• Not abnormal.
There may be the influence
of electromagnetic noise.
Check the transmission wire
and get rid of the causes.
Symptoms: Nothing is displayed on the remote controller. 2
Diagnosis flow Cause
Inspection method and
troubleshooting
LED display of the indoor
controller board
LED1 :
LED2 :
LED3 : or
Check the status
of the indoor controller
board LED3 display.
Is the refrigerant
address “0”?
NO
YES
NO
YES
Is “EA” or “Eb”
displayed?
OCH533D
42
10 to 16 V DC?
YES
NO
Lighting
Blinking
Lighting
Blinking
Check the voltage of the
terminal block (TB6) of
the remote controller.
Check the status of the LED2
after disconnecting the remote
controller wire from the terminal
block of the indoor unit.
• Defective
remote controller
• Replace the
remote controller.
• Breaking or poor
contact of the remote
controller wire
• Check if there is breaking
or poor contact of the
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.
• The remote controller
wire short-circuits
• Check if the remote
controller wire is
short-circuited.
• Defective indoor
controller board
• Replace the indoor
controller board.
Diagnosis flow Cause
Inspection method and
troubleshooting
Symptoms: Nothing is displayed on the remote controller. 3
LED display of the indoor
controller board
LED1 :
LED2 : or
LED3 : —
Check the status
of the LED2.
Check the status
of the LED2.
OCH533D
43
11-4. HOW TO CHECK THE PARTS
1
2
3
4
5
M
Gray
Orange
Red
Yellow
Black
Parts name
Check points
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 10 to 30:)
Thermistor (TH3)
<Liquid>
Thermistor (TH4)
<Discharge>
Thermistor (TH6)
<2-phase pipe>
Thermistor (TH7)
<Ambient>
Thermistor (TH8)
<Heat sink>
(SW75V, SW100/120Y)
Thermistor (TH34)
<Comp. surface>
160 to 410 k"
4.3 to 9.6 k"
TH4
TH34
TH3
TH6
TH7
TH8
Abnormal
Open or short
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20
:
)
Solenoid valve coil
<4-way valve>
(21S4)
Motor for compressor
(MC)
Linear expansion valve
(LEV-A/LEV-B)
Normal
Abnormal
Open or short
Disconnect the connector then measure the resistance with a tester.
(Winding temperature 20:)
Normal
Gray - Black Gray - Red
Gray - Yellow
Gray - Orange
Abnormal
46i3 "
Open or short
Refer to the next page.Fan motor
(MF1,MF2)
SW100/120YSW100/120V
0.19 " 0.30 "
Measure the resistance between the terminals with a tester.
(Winding temperature 20
:
)
Normal
Abnormal
Open or short
W
V
U
1435i150 "
SW75V (R1/R2/R3)
0.88 "
Normal
39 to 105 k"
SW75VR4
0.95 "
PUHZ-SW75VHA.UK PUHZ-SW75VHAR3.UK PUHZ-SW75VHAR4.UK
PUHZ-SW75VHA-BS.UK PUHZ-SW75VHAR3-BS.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
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-SW120VHA.UK
PUHZ-SW120VHAR3.UK PUHZ-SW120VHAR4.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW120VHAR3-BS.UK PUHZ-SW120VHAR4-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
OCH533D
44
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.)
Self check
Symptom : The outdoor fan cannot rotate.
1
2
Check method of DC fan motor (fan motor/outdoor controller circuit board)
Fail
Fail
Wiring contact check
Contact of fan motor connector (CNF1, 2)
Fuse check
Check the fuse (F5) on outdoor
controller board.
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
Recover wiring.
Replace the outdoor controller board.
Replace the fan motor.
Replace the outdoor controller board
(C.B) and the fan motor (MF1, 2).
Replace the outdoor
controller board.
Replace the fan motor.
Is the voltage normal?
Is there contact failure?
Yes
No
Did the fuse blow?
No
Yes
Check the operation of fan. END
Yes
OK
Check the operation. END
OK
Yes
No
11-5. HOW TO CHECK THE COMPONENTS
0.5
2.5 5
2.5
4.5
Vout (V)
PRESSURE
(MPa)
3
2
1
WHT
BLU
BLK
SENSOR
5 V DC
GND
63HS
Vout
MICRO
PROCESSOR
MULTI
CONTROLLER BOARD
3-1 : 5 V (DC)
2-1 : Output Vout (DC)
<HIGH PRESSURE SENSOR>
OCH533D
45
<Thermistor feature chart>
Low temperature thermistors
• Thermistor <Liquid> (TH3)
• Thermistor <2-phase pipe> (TH6)
• Thermistor <Ambient> (TH7)
0: 15 k"
10: 9.6 k"
20: 6.3 k"
25: 5.2 k"
0: 180 k"
25: 50 k"
50: 17 k"
70: 8 k"
90: 4 k"
30: 4.3 k"
40: 3.0 k"
Thermistor R0 = 15 k" ± 3%
B constant = 3480 ± 2%
R
t =15exp{3480(
273+t
–
273
)}
1
1
Thermistor R50 = 17 k" ± 2%
B constant = 4150 ± 3%
Rt =17exp{4150(
273+t – 323
)}
1
1
Thermistor R120 = 7.465 k" ± 2%
B constant = 4057 ± 2%
R
t =7.465exp{4057(
273+t – 393
)}
1
1
Medium temperature thermistor
• Thermistor <Heat sink> (TH8)
(SW75V, SW100/120Y only)
20: 250 k"
30: 160 k"
40: 104 k"
50: 70 k"
60: 48 k"
70: 34 k"
80: 24 k"
90: 17.5 k"
100: 13.0 k"
110 : 9.8 k"
High temperature thermistor
• Thermistor <Discharge> (TH4)
• Thermistor <Comp. surface> (TH34)
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
Temperature (:)
Resistance (k")
200
150
100
50
0
25 50 75 100 125
Temperature (:)
Resistance (k")
500
400
300
200
100
0
25
50 75 100 120
Temperature (:)
Resistance (k")
OCH533D
46
<Output pulse signal and the valve operation>
(2) Linear expansion valve operation
A
B
C
Open
Extra tightening (about 32 pulse)
Pulse number
500 pulse
Opening a valve
all the way
Close
Valve position (capacity)
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.
· Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion
valve.
LEV
M
1
6
[4
[4
[3
[2
[1
1
Gray
Orange
Red
Yellow
Black
2
3
4
5
Connector LEV-A
LEV-B
12 V DC
Outdoor controller board
Drive circuit
[3
[2
[1
3
2
5
4
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>
1
ON
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
ON
OFF
[1
Output
(Phase)
Output
[2
[3
[4
2 3 4
5 6 7 8
OFF
OFF
ON
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
OCH533D
47
Main body
Lead wire
Stopper
Coil
Be sure to attach
the stopper.
A
(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.
<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.
<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.
A
OCH533D
48
11-6. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-SW75VHA(-BS).UK PUHZ-SW75VHAR3(-BS).UK PUHZ-SW100VHA(-BS).UK
PUHZ-SW100VHAR3(-BS).UK PUHZ-SW120VHA(-BS).UK PUHZ-SW120VHAR3(-BS).UK
PUHZ-SW100YHA(-BS).UK PUHZ-SW120YHA(-BS).UK PUHZ-SW100YHAR1(-BS).UK
PUHZ-SW100YHAR3(-BS).UK PUHZ-SW120YHAR1(-BS).UK PUHZ-SW120YHAR3(-BS).UK
–
+
}
SW4
Test operation
SW6
Model select
SW5
Function switch,
Model select
SW1
Manual defrost, detect
history record reset,
refrigerant address
CNDM
1–2: Input of low-level sound priority mode
1–3: Input of external contact point
TH4
Thermistor <Discharge>
TH3
Thermistor
<Liquid>
TH6
Thermistor
<2-phase pipe>
TH7
Thermistor<Ambient>
VDC (TEST POINT 1)
(voltage between pins of C5E)
: 250–380 V DC
VFG (TEST POINT 4)
(voltage between right
pins of PC5C and PC5D,
pin 3 and pin 4)
VSP (TEST POINT 3)
(voltage between pins of
C5A, C5B): 0 V DC (when
stopped), 1–6.5 V DC
(when operated)
SW7
Demand control setting
SW9
Function switch
CN51
External signal output
• Compressor operating signal
• Abnormal signal
LEV-A,-B
Linear expansion valve
SWP
Pump down
CN52C
(Connect to the outdoor noise
filter circuit board (SW75V)/
the outdoor power circuit
board (SW100/120V))
Only for SW·VHA
CNS
(Indoor/outdoor unit
connecting wire)
CNAC
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)
CN2
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
[5: – 1,2,6,7: + ]
21S4
4-way valve
63H
High pressure switch
CN4
Transmission to outdoor power circuit
board (CN4)
CNDC
280–380 V DC Connect
from outdoor power circuit
board for VHA, connect
from noise filter board for
YHA
(CNDC)
V
CC (TEST POINT 2)
(voltage between pins of
C6B): 15 V DC
63L
Low pressure switch
(SW100/120)
63HS
High pressure sensor
TH34
Thermistor
<Comp. surface>
OCH533D
49
<CAUTION> TEST POINT1 is high voltage.
Outdoor controller circuit board
PUHZ-SW75VHAR4.UK PUHZ-SW100VHAR4.UK PUHZ-SW120VHAR4.UK
PUHZ-SW75VHAR4-BS.UK PUHZ-SW100VHAR4-BS.UK PUHZ-SW120VHAR4-BS.UK
PUHZ-SW100YHAR4.UK PUHZ-SW120YHAR4.UK
PUHZ-SW100YHAR4-BS.UK PUHZ-SW120YHAR4-BS.UK
–
+
}
SW4
Test operation
SW6
Model select
SW5
Function switch,
Model select
SW1
Manual defrost, detect
history record reset,
refrigerant address
CNDM
1–2: Input of low-level sound priority mode
1–3: Input of external contact point
TH4
Thermistor <Discharge>
TH3
Thermistor
<Liquid>
TH6
Thermistor
<2-phase pipe>
TH7
Thermistor<Ambient>
VDC (TEST POINT 1)
(voltage between pins of C5E)
: 250–380 V DC
VFG (TEST POINT 4)
(voltage between right
pins of PC5C and PC5D,
pin 3 and pin 4)
VSP (TEST POINT 3)
(voltage between pins of
C5A, C5B): 0 V DC (when
stopped), 1–6.5 V DC
(when operated)
SW7
Demand control setting
SW9
Function switch
LEV-A,-B
Linear expansion valve
SWP
Pump down
CN52C
(Connect to the outdoor noise
filter circuit board (SW75V)/
the outdoor power circuit
board (SW100/120V))
Only for SW·VHA
CNS
(Indoor/outdoor unit
connecting wire)
CNAC
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)
CN2
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
[5: – 1,2,6,7: + ]
21S4
4-way valve
63H
High pressure switch
CN4
Transmission to outdoor power circuit
board (CN4)
CNDC
280–380 V DC Connect from outdoor
power circuit board for VHA, connect
from noise filter board for YHA
(CNDC)
V
CC (TEST POINT 2)
(voltage between pins of
C821): 15 V DC
63L
Low pressure switch
(SW100/120)
63HS
High pressure sensor
TH34
Thermistor
<Comp. surface>
OCH533D
50
Outdoor noise filter circuit board
PUHZ-SW75VHA.UK PUHZ-SW75VHA-BS.UK
PUHZ-SW75VHAR3.UK PUHZ-SW75VHAR3-BS.UK
LO, NO
Voltage of 230 V AC is output.
(Connect ACL)
CN52C
52C relay signal
(Connect to the
outdoor controller
circuit board
(CN52C))
CN5
Primary current
(Connect to the
outdoor power
circuit board
(CN5))
CNAC1, CNAC2
230 V AC
(Connect to the
outdoor controller
circuit board
(CNAC))
EI, E2
Connect to the earth
E3
Connect to
the earth
LI, NI
Voltage of 230
V AC is input.
(Connect to the
terminal block
(TB1))
OCH533D
51
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
CNAC2
230 V AC
(Connect to the
outdoor controller
circuit board (CNAC))
CNDC
(Connect to the
outdoor controller
circuit board
(CNDC))
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)
CNCT
Primary current
(Connect to the outdoor power circuit
board (CN5))
NO
Connect to the
outdoor converter
circuit board(N-IN)
CNL
Connect to the ACL4
GD3
Connect to the earth
OCH533D
52
Outdoor noise filter circuit board
PUHZ-SW100YHAR4.UK PUHZ-SW120YHAR4.UK
PUHZ-SW100YHAR4-BS.UK PUHZ-SW120YHAR4-BS.UK
CNL
Connect to the ACL4
PCB maker trade mark
lot number
UL mark
GD1
Connect to the earth
CNDC
(Connect to the
outdoor controller
circuit board
(CNDC))
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))
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))
CNCT
Primary current
(Connect to the outdoor
power circuit board
(CN5))
GD3
Connect to the earth
CNAC1, CNAC2
230 V AC
(Connect to the
outdoor controller
circuit board
(CNAC))
OCH533D
53
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.
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
6–5: 16V DC
7–5: 16 V DC
1, 2, 6, 7 : +
5 : –
]
[
LD1-LD2
280–380 V DC
Connect to
the outdoor
controller
circuit board
(CNDC)
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
LD9
Connect to
the earth
CN5
Primary current detection
(Connect to the outdoor
noise filter circuit board
(CN5))
CN4
Connect from the
outdoor controller
circuit board
(CN4)
CN3
Thermistor
<Heat sink>
(TH8)
DIP-IPM
DIP-PFC
P1 N L N1 N1
N2 W V U P2
OCH533D
54
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.
CN2
Connect to the outdoor controller circuit board (CN2)
1–5: Outdoor power circuit board
→ Transmitting sig-
nal to the outdoor controller circuit board (0–5 V
DC)
2–5: Zero cross signal (0–5 V DC)
3–4: 15 V DC
6–5: 16 V DC
7–5: 16 V DC
1, 2, 6, 7 : +
5 : –
]
[
U, V, W
Connect to the
compressor (MC)
Voltage among phases:
10–180 V AC
CN4
Connect to the
outdoor controller
circuit board (CN4)
E4
Connect to the
earth
EI, E3
Connect to
the earth
CNAC1, CNAC
Connect to the outdoor controller circuit
board (230 V AC)
R/L1, S/N1
Voltage of 230 V AC
is input. (Connect to the
terminal block (TB1))
CNDC
280–380 V DC
Connect to the outdoor
controller circuit board
(CNDC)
TBL2, TBL4
Connect to ACL
N1 P1
CN6
Thermistor (TH8)
<Heat sink>
N2P2 V
U W
DIP-IPM
IGBT (Q600)
N
N
+
−
P1 N1
L
L
Diode bridge
(DB1, DB2)
OCH533D
55
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
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.
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))
EI, E4
Connect to the
earth
DCL1, DCL2
Connect to DCL
P2
Connect to the smoothing capacitor CB +
U/V/W
Connect to the compressor (MC) Voltage among
phases: 10–180 V AC
CNDC
280–380 V DC (1+, 3−)
Connect to the outdoor
controller circuit board
(CNDC)
E2, E3
Connect to the earth
CN52C
52C driving signal
Connect to the outdoor
controller circuit board
(CN52C)
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
N2
Connect to the smoothing
capacitor CB −
CN4
Connect to the outdoor
controller circuit board (CN4)
Power module
S R
W V U L2 P N1 L1
OCH533D
56
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.
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))
EI, E4
Connect to the
earth
DCL1, DCL2
Connect to DCL
U/V/W
Connect to the compressor (MC) Voltage among
phases: 10–180 V AC
CNDC
280–380 V DC (1+, 3−)
Connect to the outdoor
controller circuit board
(CNDC)
E2, E3
Connect to the earth
CN52C
52C driving signal
Connect to the outdoor
controller circuit board
(CN52C)
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
CN4
Connect to the outdoor
controller circuit board (CN4)
Power module
S R
W V U L2 P N1 L1
OCH533D
57
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.
CN5
Detection of primary
current (Connect to
the outdoor noise filter
circuit board (CNCT))
CN4
Connect to the
outdoor controller
circuit board (CN4)
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 : + ]
TB-L1, TB-L2, TB-L3
Connect to the outdoor
converter circuit board
(L1-OU, L2-OU, L3-OU)
400 V AC
CN7
Connect to the
outdoor converter
circuit board (CN7)
TB-U, TB-V, TB-W
Connect to the compressor (MC)
Voltage among phases:
10–400 V AC
TB-N
Connect to the CK capacitor
Diode module
U P2VW
N2
L3 N1L1P1 L2
DIP-IPM
TAB connector
on X52CA
Connect to the
RS resistor
CN6
Thermistor
<Heat sink> (TH8)
OCH533D
58
Outdoor power circuit board
PUHZ-SW100YHAR1.UK
PUHZ-SW100YHAR3.UK
PUHZ-SW100YHAR4.UK
PUHZ-SW120YHAR1.UK
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.
CN5
Detection of primary
current (Connect to
the outdoor noise filter
circuit board (CNCT))
CN4
Connect to the
outdoor controller
circuit board (CN4)
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 : + ]
CN7
Connect to the
outdoor converter
circuit board (CN7)
TB-U, TB-V, TB-W
Connect to the compressor (MC)
Voltage among phases:
10–400 V AC
TB-N
Connect to the CK capacitor
Diode module
U P2VW
N2
L3 N1L1P1 L2
DIP-IPM
TAB connector
on X52CA
Connect to the
RS resistor
CN6
Thermistor
<Heat sink> (TH8)
TB-L1,
TB-L2,
TB-L3
Connect to the
outdoor converter
circuit board
(L1-OU, L2-OU,
L3-OU)
400 V AC
L3OUT-L3IN
Lead connect
OCH533D
59
Outdoor converter circuit board
PUHZ-SW100YHA.UK PUHZ-SW100YHAR1.UK PUHZ-SW100YHAR3.UK
PUHZ-SW100YHA-BS.UK PUHZ-SW100YHAR1-BS.UK PUHZ-SW100YHAR3-BS.UK
PUHZ-SW120YHA.UK PUHZ-SW120YHAR1.UK PUHZ-SW120YHAR3.UK
PUHZ-SW120YHA-BS.UK PUHZ-SW120YHAR1-BS.UK PUHZ-SW120YHAR3-BS.UK
CN7
Connect to the
outdoor power
circuit board
(CN7)
CK-OU
Connect to the CK capacitor
L1-IN, N-IN
Connect to the noise filter
circuit board (LO1, NO)
L1-A1
Connect to the ACL1
L1-A2, L2-A2, L3-A2
Connect to the ACL1, ACL2, ACL3
L1-OU, L2-OU, L3-OU
Connect to the outdoor power circuit board
(TB-L1, L2, L3)
OCH533D
60
Outdoor converter circuit board
PUHZ-SW100YHAR4.UK PUHZ-SW120YHAR4.UK
PUHZ-SW100YHAR4-BS.UK PUHZ-SW120YHAR4-BS.UK
L1-A2, L2-A2, L3-A2
Connect to the ACL1, ACL2, ACL3
CN7
Connect to the
outdoor power
circuit board
(CN7)
CK-OU
Connect to the CK capacitor
L1-IN, N-IN
Connect to the noise filter
circuit board (LO1, NO)
L1-A1
Connect to the ACL1
L1-OU, L2-OU, L3-OU
Connect to the outdoor power circuit board
(TB-L1, L2, L3)
OCH533D
61
11-7. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
(1) Function of switches
The black square ( ) indicates a switch position.
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1 2 3 64 74 5 8
OFF
ON
75V
1 2 3 64 74 5 8
OFF
ON
100V
1 2 3 4 5 6
OFF
ON
MODEL
SW6
SW5-6
MODEL
SW6
SW5-6
1 2 3 4 5 6
OFF
ON
1 2 3 64 74 5 8
OFF
ON
100Y
1 2 3 4 5 6
OFF
ON
1 2 3 64 74 5 8
OFF
ON
120Y
1 2 3 4 5 6
OFF
ON
1 2 3 64 74 5 8
OFF
ON
120V
1 2 3 4 5 6
OFF
ON
1
2
3,4,5
6
3
4
5
6
1
2
3
1
2
3,4
1
2
3
4
5
6
7
8
6
ON OFF
No.
Function Effective timing
Action by the switch operation
No function
Power failure
automatic recovery *2
No function
model select
No function
Defrost setting
Use of existing pipe
No function
No function
No function
Function switch
No function
Switch
SW5
SW7
*
4
DIP
switch
SW8
SW9
SW6
SW5
Type of
Switch
—
Auto recovery
—
—
For high humidity
Used
—
—
—
Valid
—
—
No auto recovery
—
—
Normal
Not used
—
—
—
Normal
—
—
When power supply ON
—
Always
—
Always
Always
—
—
—
Always
—
Setting of demand
control
*
3
Breaker size setting
*
Only SW75
1
2
SW7-1 SW7-2
OFF
0% (Operation stop)
75%
50%
OFF
ON
OFF
OFF
ON
Power consumption
(Demand switch ON)
SW7 Breaker size
OFF
4
Both for indoor unit
and outdoor unit
Only for outdoor unit
20A
16A
20A
16A
—
25A (Default)
ON
OFF
OFF
5
ON
ON
Model select
Following SW5-6 reference
DIP
switch
Push
switch
SW1
1
2
Manual defrost *1 Start Normal
When compressor is working
in heating operation. *1
Abnormal history clear
Refrigerant address
setting
When power supply ON
Clear Normal Off or operating
SWP
6
5
4
3
Under suspension
Pump down Start Normal
SW4
1
2
No function — —
No function — —
—
—
1 2 3
0 1 2
3
4 5 6ON1 2 3 4 5 6ON1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3
4 5
4 5 6ON1 2 3 4 5 6
ON
When power supply ON
Continue to the next page
OCH533D
62
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
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.
CNDM
X
SW1
~
X
Max. 10 m including local wiring
SW1 : Switch
X : Relay (Contact spec. : DC1mA)
Relay
supply
Red 3
Brown 2
Orange 1
Purchased locally
Adaptor for external
signal input
(PAC-SC36NA)
Outdoor unit
controller board
3
2
1
Insulate this point securely as
this is not used.
<Low-level sound priority mode circuit>
*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.
OCH533D
63
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*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.)
1 2 3 64 74 5 8
OFF
ON
75V
1 2 3 64 74 5 8
OFF
ON
100V
1 2 3 4 5 6
OFF
ON
MODEL
SW6
SW5-6
1 2 3 4 5 6
OFF
ON
1 2 3 64 74 5 8
OFF
ON
120V
1 2 3 4 5 6
OFF
ON
1 2 3 64 74 5 8
OFF
ON
100Y
1 2 3 4 5 6
OFF
ON
1 2 3 64 74 5 8
OFF
ON
120Y
1 2 3 4 5 6
OFF
ON
MODEL
SW6
SW5-6
1
2
3,4,5
6
3
4
5
6
1
2
3
1
2
3,4
1
2
3
4
5
6
7
8
ON OFF
No.
Function Effective timing
Action by the switch operation
No function
Power failure
automatic recovery *
2
No function
model select
No function
Defrost setting
Use of existing pipe
No function
No function
No function
Function switch
No function
Switch
SW5
SW7
*
3
DIP
switch
SW8
SW9
SW6
SW5
Type of
Switch
—
Auto recovery
—
—
For high humidity
Used
—
—
—
Valid
—
—
No auto recovery
—
—
Normal
Not used
—
—
—
Normal
—
—
When power supply ON
—
—
Always
Always
—
—
—
Always
—
Breaker size setting
(
Only SW75)
1
2
SW7 Breaker size
OFF
4
Both for indoor unit
and outdoor unit
Only for outdoor unit
20A
16A
20A
16A
—
25A (Default)
ON
OFF
OFF
5
ON
ON
Model select
Following SW5-6 reference
DIP
switch
Push
switch
SW1
1
2
Manual defrost *
1
Start Normal
When compressor is working
in heating operation. *
1
Abnormal history clear
Refrigerant address
setting
When power supply ON
Clear Normal Off or operating
SWP
6
5
4
3
Under suspension
Pump down Start Normal
SW4
1
2
No function — —
No function — —
—
—
1 2 3
0 1 2
3
4 5 6ON1 2 3 4 5 6ON1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3
4 5
4 5 6ON1 2 3 4 5 6
ON
When power supply ON
Mode select
*
4
No function
No function
—
Low noise mode
—
Always
—
6
OCH533D
64
Special function
(a) Low-level sound priority mode (Local wiring)
By performing the following modication, 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.
1 Complete the circuit as shown when using the external input adapter (PAC-SC36NA-E). (Option)
2 SW7-1 (Outdoor unit control board): OFF
3 SW1 ON: Low noise mode
SW1 OFF: Normal operation
A Circuit diagram example
(low noise mode)
B On-site arrangement
C External input adapter
(PAC-SC36NA-E)
X: Relay
D Outdoor unit control board
E Maximum 10 m
F Power supply for relay
A
SW1
Orange
1
3
Brown
Red
EB
F
CNDM
X
X
C D
OCH533D
65
<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.
F3
F5
F9
—
—
—
E6
—
(E8)
—
(E9)
E0
E3
E4
E5
EF
[Display]
(1)Normal condition
(2)Abnormal condition
Unit condition
Outdoor controller board A-Control Service Tool
LED1 (Green) LED2 (Red) Check code
When the power is turned on
When unit stops
When compressor is warming up
When unit operates
Lighted Lighted
Lighted
Lighted
Lighted
Not lighted
Indication of the display
Alternately blinking display
Operation mode
Not lighted
Lighted
00, etc.
08, etc.
C5, H7, etc.
Indication Error
Check
code
*1
Outdoor controller board
Contents Inspection method
LED1 (Green) LED2 (Red)
1 blinking 2 blinking
2 blinking 1 blinking
2 blinking
3 blinking
4 blinking
Connector(63L) is open.
Connector(63H) is open.
2 connectors are open.
Startup time over
Check code is not defined.
Miswiring of I/F or FTC or 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)
I/F or FTC or outdoor unit communication
error (signal receiving error) is detected by
FTC unit.
I/F or FTC or outdoor unit communication
error (signal receiving error) is detected by
outdoor unit.
I/F or FTC or outdoor unit communication
error (transmitting error) is detected by
outdoor unit.
Remote controller signal receiving
error is detected by remote controller.
Remote controller transmitting error
is detected by remote controller.
Remote controller signal receiving
error is detected by I/F or FTC unit.
Remote controller transmitting error
is detected by I/F or FTC unit.
*1 Check code displayed on remote controller
*
2 Refer to Technical manual of ATW, I/F, FTC.
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.
3
Check if noise entered into I/F or FTC or outdoor connecting
wire or power supply.
4Re-check error by turning off power, and on again.
1Check if connector (63H or 63L) on the outdoor controller
board is not disconnected.
2Check continuity of pressure switch (63H or 63L) by tester.
1Check if noise entered into transmission wire of remote
controller.
2
Check if noise entered into I/F or FTC or outdoor connecting
wire.
3Re-check error by turning off power, and on again.
1
Check 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.
2
Check if noise entered into I/F or FTC or outdoor connecting
wire or power supply.
3Check if noise entered into I/F or FTC or outdoor controller
board.
4Re-check error by turning off power, and on again.
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Continue to the next page
OCH533D
66
U2
U7
U1
UL
U8
Ud
UF
UP
UH
U6
U3
U4
U5
U9
P1
P2
P9
P4
P5
P6
P8
Indication Error
Check
code
*1
Outdoor controller board
Contents Inspection method
LED1 (Green)
LED2 (Red)
3 blinking 1 blinking
2 blinking
3 blinking
*1 Check code displayed on remote controller
*2 Refer to service manual for indoor unit.
4 blinking
5 blinking
6 blinking
7 blinking
1 blinking
2 blinking
3 blinking
4 blinking
4 blinking
Abnormality of comp. surface
thermistor(TH34)
and discharging
temperature (TH4)
Abnormality of superheat due
to low discharge temperature
1Check if stop valves are open.
2
Check 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
outdoor linear expansion valve using a tester.
Abnormal high pressure (High
pressure switch 63H operated.)
Abnormality of outdoor fan
motor rotational speed
1Check if outdoor units have a short cycle on their air ducts.
2Check if connector
(63H/63L)
on outdoor controller board is not disconnected.
3Check if heat exchanger and filter is not dirty.
4Measure resistance values among terminals on linear expansion valve
using a tester.
1Check if stop valves are open.
2Check looseness, disconnection, and converse connection of
compressor wiring.
3
Measure resistance values among terminals on compressor using a tester.
4Check if outdoor unit has a short cycle on its air duct.
5Check leakage of refrigerant.
Compressor overcurrent
breaking(Startup locked)
Compressor overcurrent breaking
Abnormality of current sensor (P.B.)
Abnormality of power module
Open/short of discharge thermistor (TH4)
and comp. surface thermistor (TH34)
Open/short of outdoor thermistors
(TH3, TH6, TH7 and TH8)
1
Check if connectors (TH3, TH4, TH6, TH7 and TH34) on outdoor controller
board, and connector (CN3) on outdoor power board are not disconnected.
2Measure resistance value of outdoor thermistors.
Abnormality of heat sink
temperature
1Check if outdoor units have a short cycle on their air ducts.
2Measure resistance value of outdoor thermistor(TH8).
1Check the outdoor fan motor.
2Check if connector
(TH3)
on outdoor controller board is disconnected.
Abnormality of voltage 1Check looseness, disconnection, and converse connection of
compressor wiring.
2
Measure 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.
Abnormality of room temperature thermistor (TH1)
Abnormality of pipe temperature thermistor /Liquid (TH2)
Abnormality of pipe temperature
thermistor/Condenser-Evaporator
1Check if connectors (CN20, CN21, CN29 and CN44) and terminal
blocks on indoor controller board are not disconnected.
2Measure resistance value of indoor thermistors.
Note: Refer to the indoor unit's Installation Manual.
Abnormality of drain sensor (DS)
Float switch(FS) connector open
Indoor drain overflow protection
1Check if connector (CN31)(CN4F) and terminal blocks on indoor controller
board is not disconnected.
2Measure resistance value of indoor thermistors.
3
Measure resistance value among terminals on drain-up machine using a tester.
4Check if drain pump works.
5Check drain function.
Freezing (cooling)/overheating
(heating) protection
1Check if indoor unit has a short cycle on its air duct.
2Check if heat exchanger and filter is not dirty.
3Measure resistance value on indoor and outdoor fan motors.
4Check if the inside of refrigerant piping is not clogged.
Abnormality of pipe
temperature
1
Check if indoor thermistors(TH2 and TH5) are not disconnected from holder.
2Check if stop valve is open.
3
Check converse connection of extension pipe. (on plural units connection)
4Check if indoor/outdoor connecting wire is connected correctly.
(on plural units connection)
P.30
P.31
P.30
P.33
P.31
P.33
P.33
P.34
P.33
P.34
P.30
P.31
P.31
P.32,33
*2
*2
*2
*2
*2
*2
Detailed
reference
page
Protection from overheat operation(TH3)
Abnormal low pressure (Low
pressure switch 63L operated.)
Note: Refer to the indoor unit's Installation Manual.
OCH533D
67
<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’.
SW2 setting
1ON2 3 4 5 6
Display detail
Explanation for display Unit
Operation indicator SW2 : Indicator change of self diagnosis
<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.
1ON2 3 4 5 6
(Initial setting)
SW2
1 second
interval
LED1
(Lighting)
Display Operation Model
The tens digit : Operation mode
The ones digit : Relay output
O
C
H
d
Display
0
1
2
3
4
5
6
7
8
A
Compressor
Warming-up
Compressor
4-way valve
Solenoid valve
—
—
—
—
ON
ON
ON
ON
—
—
—
—
—
—
—
—
—
—
ON
ON
—
—
ON
ON
—
—
ON
ON
—
ON
—
ON
—
ON
—
ON
—
ON
—
—
OFF/FAN
COOLING
HEATING
DEFROSTING
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.
(3) When the display blinks
Inspection code is displayed when compressor stops due to the work of protection devices.
Display Contents to be inspected (When power is turned on)
F3
F5
F9
E8
E9
EA
Eb
EC
E0–E7
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
Display
Inspection unit
0
1
2
3
Outdoor unit
Indoor unit 1
Indoor unit 2
Indoor unit 3
Display
Contents to be inspected (During operation)
U1
U2
U3
U4
U5
U6
U7
U8
Ud
UF
UH
UL
UP
P1–P8
A0–A7
Abnormal high pressure (63H worked)
Abnormal high discharge temperature and shell thermistor, shortage of refrigerant
Open/short circuit of discharge thermistor(TH4) and comp. surface thermistor(TH34)
Open/short of outdoor unit thermistors(TH3, TH6, TH7 and TH8)
Abnormal temperature of heat sink
Abnormality of power module
Abnormality of superheat due to low discharge temperature
Abnormality in outdoor fan motor
Overheat protection
Compressor overcurrent interruption (When Comp. locked)
Current sensor error
Abnormal low pressure
Compressor overcurrent interruption
Abnormality of indoor units
Communication error of M-NET system
OCH533D
68
SW2 setting
1ON2 3 4 5 6
Display detail
Explanation for display Unit
Pipe temperature/Liquid (TH3)
−40 to 90
−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 2 s
:
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
Discharge temperature (TH4)
3 to 217
Output step of outdoor FAN
0 to 10
The number of ON/OFF times of compressor
0 to 9999
Compressor integrating operation times
0 to 9999
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 2 s
:
Step
100 times
10 hours
0 to 10
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 2 s
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 2 s
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
Compressor operating current
0 to 50
LEV-A opening pulse
0 to 480
0 to 50
Note: Omit the figures after the decimal fractions.
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 2 s
A
Pulse
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.
Code
display
Code
display
Operation mode on error occurring Operation mode of when operation stops due to
error is displayed by setting SW2 like below.
1ON2 3 4 5 6
(SW2)
10
1ON2 3 4 5 6
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 2 s
Hz
1
05
4
25
2
45
1
25
1
50
1ON2 3 4 5 6
The black square ( ) indicates a switch position.
OCH533D
69
SW2 setting
1ON2 3 4 5 6
Display detail
Explanation for display Unit
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 2 s
:
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
Compressor temperature (TH34) or
discharge temperature (TH4) on error
occurring
3 to 217
Compressor operating current on error
occurring
0 to 50
Error history (1) (latest)
Alternate display of abnormal unit
number and code
Error history (2)
Alternate display of error unit number
and code
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 2 s
:
A
Code
display
Code
display
0 to 50
When no error history,
“ 0 ” and “– –” are displayed by turns.
When no error history,
“ 0 ” and “– –” are displayed by turns.
1ON2 3 4 5 6
Thermostat ON time
0 to 999
Test run elapsed time
0 to 120
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 2 s
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 2 s
Minute
Minute
15
1
30
2
45
1
05
The black square ( ) indicates a switch position.
OCH533D
70
SW2 setting
1ON2 3 4 5 6
Display detail
Explanation for display
Unit
Capacity setting display
Displayed as an outdoor capacity code.
Code
display
1ON2 3 4 5 6
1ON2 3 4 5 6
Outdoor unit setting information
Indoor pipe temperature/Liquid (TH2(1))
Indoor 1
−39 to 88
Code
display
:
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
1ON2 3 4 5 6
1ON2 3 4 5 6
Indoor room temperature (TH1)
8 to 39
Capacity
SW75V
Code
14
20
25
SW100V, 100Y
SW120V, 120Y
Setting details
• The tens digit (Total display for applied setting)
• The ones digit
H·P /
Cooling only
Single phase / 3 phase
Display details
0 : H·P 1 : Cooling only
0 :
Single phase
2 :
3 phase
Setting details
Defrosting switch
Display details
0 : Normal 1 : For high humidity
(Example) When heat pump, 3 phase and defrosting
(normal) are set up, “20” is displayed.
1ON2 3 4 5 6
1ON2 3 4 5 6
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.)
:
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
:
:
:
8 to 39
Indoor pipe temperature/Liquid (TH2(2))
Indoor 2
−39 to 88
Indoor pipe temperature/Cond./Eva.
(TH5(2))
Indoor 2
−39 to 88
1ON2 3 4 5 6
The number of connected indoor units
Unit
0 to 3
(The number of connected indoor units are displayed.)
The black square ( ) indicates a switch position.
OCH533D
71
1ON2 3 4 5 6
°C
Discharge superheat SHd
0 to 255
Cooling = TH4−T
63HS
Heating = TH4−T63HS
0 to 255
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
0.1 A
Input current of outdoor unit
0 to 500
(When it is 100 or more, hundreds digit, tens digit
and ones digit are displayed by turns.)
Pulse
LEV-B opening pulse
0 to 480
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
Code
display
U9 error detail history (latest)
(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)
* Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
L
1 phase open error (04) + PFC error (10) = 14
Description Display
00
01
02
04
08
10
20
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
SW2 setting
1ON2 3 4 5 6
Display detail
Explanation for display
Unit
:
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
Indoor setting temperature
17 to 30
Pressure saturation temperature (T
63HS)
−39 to 88
Outdoor heat sink temperature (TH8)
−40 to 200
17 to 30
:
:
:
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
−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.)
Ambient temperature (TH7)
−39 to 88
−39 to 88
(When the temperature is 0: or less, “–” and
temperature are displayed by turns.)
2 cycles
Sub cool. SC
0 to 130
Cooling = T
63HS−TH3
Heating = T
63HS−TH2
0 to FFFE (in hexadecimal notation)
(When more than FF in hex (255 in decimal), the
number is displayed in order of 16
3
's and 162's, and
161's and 160's places.
(Example) When 5000 cycles;
0.5 s 0.5 s 2 s
C4
9
1ON2 3 4 5 6
The black square ( ) indicates a switch position.
OCH533D
72
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
1ON2 3 4 5 6
SW2 setting
Display detail
Explanation for display Unit
Code
display
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.
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)
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
Error thermistor display
When there is no error thermistor,
“–“ is displayed.
Code
display
Operation frequency on error occurring
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 2 s
1ON2 3 4 5 6
Hz
Fan step on error occurring
0 to 10
0 to 10
1ON2 3 4 5 6
Step
25
1
The black square ( ) indicates a switch position.
OCH533D
73
SW2 setting
Display detail
Explanation for display Unit
1ON2 3 4 5 6
Pulse
LEV-A opening pulse on error occurring
0 to 480
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 2 s
:
Indoor room temperature (TH1) on error
occurring
8 to 39
8 to 39
:
Indoor pipe temperature/Liquid (TH2) on
error occurring
−39 to 88
−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 2 s
Pressure saturation temperature (T
63HS)
on error occurring
−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 2 s
2-phase pipe (TH6) on error occurring
−39 to 88
−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 2 s
Ambient temperature (TH7) on error
occurring
−39 to 88
−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 2 s
Outdoor heat sink temperature (TH8) on
error occurring
−40 to 200
−40 to 200
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
30
1
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
15
15
15
15
:
:
:
:
The black square ( ) indicates a switch position.
OCH533D
74
SW2 setting
Display detail
Explanation for display Unit
:
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 2 s
Sub cool on error occurring SC
0 to 130
Cooling = T
63HS−TH3
Heating = T63HS−TH2
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 2 s
Thermo-on time until error stops
0 to 999
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 2 s
Indoor pipe temperature/Liquid
(TH2 (3))
Indoor 3
−39 to 88
−39 to 88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
Indoor pipe temperature/Cond./Eva. (TH5
(3))
Indoor 3
−39 to 88
−39 to 88
(When the temperature is 0°C or less, “–” and
temperature are displayed by turns.)
When there is no indoor unit, “00” is displayed.
50
1
:
1ON2 3 4 5 6
Discharge superheat on error occurring
SHd
0 to 255
Cooling = TH4−T
63HS
Heating = TH4−T63HS
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
1ON2 3 4 5 6
:
Minute
:
15
1
15
4
The following code will be a help to know the
operating status of unit.
Display
Compressor operating frequency control
Display
Compressor operating frequency control
Primary current control
Secondary current control
1
2
1
4
8
2
•
The tens digit
•
The ones digit
(In this digit, the total number of
activated control is displayed.)
Preventive control for excessive temperature rise of discharge temperature
Preventive control for excessive temperature rise of condensing temperature
Frosting preventing control
Preventive control for excessive temperature rise of heat sink
(Example)
The following controls are activated.
• Primary current control
• Preventive control for excessive tempe-
rature rise of condensing temperature
• Preventive control for excessive tempe-
rature rise of heat sink
1a
LED
Controlling status of compressor
operating frequency
1ON2 3 4 5 6
Code
display
The black square ( ) indicates a switch position.
OCH533D
75
SW2 setting
Display detail
Explanation for display Unit
1ON2 3 4 5 6
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 2 s
05
1
:
1ON2 3 4 5 6
(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)
* Display examples for multiple errors:
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
L
1 phase open error (04) + PFC error (10) = 14
Description Display
00
01
02
04
08
10
20
U9 Error details (To be shown while
error call is deferred.)
Code
display
The black square ( ) indicates a switch position.
OCH533D
76
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.
Request code
Request content
Description
(Display range)
Unit Remarks
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
Operation state
Compressor-Operating current (rms)
Compressor-Accumulated operating time
Compressor-Number of operation times
Discharge temperature (TH4)
Outdoor unit -Liquid pipe 1 temperature (TH3)
Outdoor unit-2-phase pipe temperature (TH6)
Outdoor unit-Outside air temperature (TH7)
Outdoor unit-Heat sink temperature (TH8)
Discharge superheat (SHd)
Sub-cool (SC)
Compressor-Operating frequency
Compressor-Target operating frequency
Outdoor unit-Fan output step
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)
LEV (A) opening
LEV (B) opening
Primary current
DC bus voltage
Thermostat ON operating time
Refer to 11-8-1. Detail Contents in Request Code.
0–50
0–9999
0–9999
3–217
−40–90
−39–88
−39–88
−40–200
0–255
0–130
0–255
0–255
0–10
0–9999
0–9999
0–500
0–500
0–50
0–999
180–370
–
A
10 hours
100 times
:
:
:
:
:
:
:
Hz
Hz
Step
rpm
rpm
Pulses
Pulses
A
V
Minutes
"0" is displayed if the air conditioner is a single-fan
type.
Condensing temperature (T
63HS)
−39–88
:
11-8. Request code list
OCH533D
77
Request code
Request content
Description
(Display range)
Unit Remarks
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
Outdoor unit-Control state
Compressor-Frequency control state
Outdoor unit-Fan control state
Actuator output state
Error content (U9)
Outdoor unit-Capacity setting display
Outdoor unit-Setting information
Outdoor unit-Microprocessor version information
Outdoor unit-Microprocessor version information (sub No.)
Outdoor unit - Error postponement history 1 (latest)
Outdoor unit - Error postponement history 2 (previous)
Outdoor unit - Error postponement history 3 (last but one)
Examples) Ver 5.01
→
Auxiliary information (displayed after
version information)
Examples) Ver 5.01 A000 →
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)
–
–
–
–
–
–
–
Ver
–
Code
Code
Code
Refer to 11-8-1.Detail Contents in Request Code.
Refer to 11-8-1.Detail Contents in Request Code.
Refer to 11-8-1.Detail Contents in Request Code.
Refer to 11-8-1.Detail Contents in Request Code.
Refer to 11-8-1.Detail Contents in Request Code.
Refer to 11-8-1.Detail Contents in Request Code.
Refer to 11-8-1.Detail Contents in Request Code.
"0501"
"A000"
OCH533D
78
Request code
Request content
Description
(Display range)
Unit Remarks
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
Displays error history. (" --" is displayed if no history is present.)
Displays error history. (" --" is displayed if no history is present.)
Displays error history. (" --" is displayed if no history is present.)
: TH3
6 : TH6
7 : TH7
8 : TH8
0 : No thermistor error
Displayed in the same way as request code "0
".
0–50
0–9999
0–9999
3–217
−40–90
−40–200
−39–88
−39–88
0–255
0–130
0–255
0–10
0–9999
0–9999
0–500
0–500
0–999
Code
Code
Code
Sensor
number
–
A
10 hours
100 times
:
:
:
:
:
:
:
Hz
Step
rpm
rpm
Pulses
Pulses
Minutes
"0" is displayed if the air conditioner is a single-
fan type.
Error history 1 (latest)
Error history 2 (second to last)
Error history 3 (third to last)
Abnormal thermistor display
(TH3/TH6/TH7/TH8)
Operation mode at time of error
Compressor-Operating current at time of error
Compressor-Accumulated operating time at time of error
Compressor-Number of operation times at time of error
Discharge temperature at time of error
Outdoor unit -Liquid pipe 1 temperature (TH3) at time of error
Outdoor unit-2-phase pipe temperature (TH6) at time of error
Outdoor unit-Outside air temperature (TH7) at time of error
Outdoor unit-Heat sink temperature (TH8) at time of error
Discharge superheat (SHd) at time of error
Sub-cool (SC) at time of error
Compressor-Operating frequency at time of error
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)
LEV (A) opening at time of error
LEV (B) opening at time of error
Thermostat ON time until operation stops due to error
3
Condensing temperature (T
63HS) at the time of error
−39–88
:
OCH533D
79
Frequency control state 2
Display
Discharge temperature
Condensation temperature
Anti-freeze
Heat sink temperature
overheat prevention
overheat prevention
protection control
overheat prevention
0
1 Controlled
2 Controlled
3 Controlled Controlled
4 Controlled
5 Controlled Controlled
6 Controlled Controlled
7 Controlled Controlled Controlled
8 Controlled
9 Controlled Controlled
A Controlled Controlled
b Controlled Controlled Controlled
C Controlled Controlled
d Controlled Controlled Controlled
E Controlled Controlled Controlled
F Controlled Controlled Controlled Controlled
[Operation state] (Request code :" 0")
Data display
C4
Relay output state
Operation mode
Operation mode
Display Operation mode
0 STOP • FAN
C COOL • DRY
H HEAT
d DEFROST
Relay output state
Display
Power currently
Compressor Four-way valve Solenoid valve
supplied to compressor
[Outdoor unit – Control state] (Request code :" 51")
Data display State
0 0 0 0 Normal
0 0 0 1 Preparing for heat operation
0 0 0 2 Defrost
[Compressor – Frequency control state] (Request code :" 52")
Data display
00
Frequency control state
2
Frequency control state
1
Frequency control state 1
Display Current limit control
0 No current limit
1 Primary current limit control is ON.
2 Secondary current limit control is ON.
–
ON
ON
0
1
2
3
4
5
6
7
8
A
–
ON
ON
ON
ON
–
ON
ON
ON
ON
ON
–
ON
ON
ON
ON
[Fan control state] (Request code :" 53 ")
Data display
Fan step correction value by heat sink temperature overheat prevention control
Fan step correction value by cool condensation temperature overheat prevention control
00
Display Correction value
− (minus) −1
00
2
1
+1
+2
11-8-1. Detail Contents in Request Code
OCH533D
80
[Actuator output state] (Request code :"54")
Data display
Actuator output state 1
Actuator output state 2
00
Actuator output state 1
Display SV1 Four-way valve Compressor
0
1
2
3
4
5
6
7
8
9
A
b
C
d
E
F
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
Actuator output state 2
Display 52C SV2 SS
0
1
2
3
4
5
6
7
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
[Error content (U9)] (Request code :"55 ")
Data display
Error content 1
Error content 2
00
Error content 1 : Detected
Display
Overvoltage Undervoltage L
1-phase
Power synchronizing
error error open error
signal error
0
1
2
3
4
5
6
7
8
9
A
b
C
d
E
F
Error content 2 : Detected
Display
Converter Fo
PAM error
error
0
1
2
3
Compressor is
warming up
OCH533D
81
[Outdoor unit – Setting information] (Request code : "71")
Data display
Setting information 1
Setting information 2
00
Setting information 1
Display Defrost mode
0 Standard
1 For high humidity
Setting information 2
Display
Single-/ Heat pump/
3-phase
cooling only
0
Single-phase
Heat pump
1
Cooling only
2
3-phase
Heat pump
3
Cooling only
[Outdoor unit -– Capacity setting display] (Request code : "70")
Data display
Capacity
10 50
9 35
11 60
14 71
20 100
25 125
28 140
40 200
50 250
OCH533D
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