Mitsubishi Electric Mr.Slim PUHZ-FRP71VHA User manual

SERVICE MANUAL
No.OCH544
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R410A
August 2013
Outdoor unit
[Model name]
PUHZ-FRP71VHA
[Service Ref.]
PUHZ-FRP71VHA
PUHZ-FRP71VHA PARTS CATALOG (OCB544)
CONTENTS
1. REFERENCE MANUAL ·································2
2. SAFETY PRECAUTION ·································3
3. FEATURES ·····················································7
4. SPECIFICATIONS ··········································8
5. DATA ·······························································9
6. OUTLINES AND DIMENSIONS ···················11
7. WIRING DIAGRAM ······································12
8. WIRING SPECIFICATIONS ··························13
9. REFRIGERANT SYSTEM DIAGRAM ·············15
10. TROUBLESHOOTING ·································17
11. FUNCTION SETTING ···································71
12. MONITORING THE OPERATION DATA
BY THE REMOTE CONTROLLER ················84
13. EASY MAINTENANCE FUNCTION ·············95
14. DISASSEMBLY PROCEDURE ····················99
Note:
• This manual describes only
service data of the outdoor
units.
•
RoHS compliant products
have <G> mark on the spec
name plate.

2
INDOOR UNIT SERVICE MANUAL
For Air to Air system
1REFERENCE MANUAL
For Air to Water system
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
EHPT20X-VM2HB
EHPT20X-VM6HB
EHPT20X-YM9HB
EHPT20X-TM9HB
EHPT20X-VM6B
EHPT20X-YM9B
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
EHPT20X-VM2HB.UK
EHPT20X-VM6HB.UK
EHPT20X-YM9HB.UK
EHPT20X-TM9HB.UK
EHPT20X-VM6B.UK
EHPT20X-YM9B.UK
OCH531
EHSC-VM2B
EHSC-VM6B
EHSC-YM9B
EHSC-TM9B
EHSC-VM6EB
EHSC-YM9EB
EHPX-VM2B
EHPX-VM6B
EHPX-YM9B
ERSC-VM2B
EHSC-VM2B.UK
EHSC-VM6B.UK
EHSC-YM9B.UK
EHSC-TM9B.UK
EHSC-VM6EB.UK
EHSC-YM9EB.UK
EHPX-VM2B.UK
EHPX-VM6B.UK
EHPX-YM9B.UK
ERSC-VM2B.UK
OCH532
Model name Service Ref. Service
Manual No.
PLA-ZRP35/50/60/71/125/140BA PLA-ZRP35/50/60/71/125/140BA.UK OCH535
OCB535
PCA-RP35/50/60/71/100/125/140KAQ PCA-RP35/100/125/140KAQ
PCA-RP50/60/71KAQR1
OCH491
OCB491
PCA-RP71/125HAQ PCA-RP71/125HAQ OCH492
OCB492
PKA-RP35/50HAL PKA-RP35/50HAL OCH453
OCB453
PKA-RP60/71/100KAL PKA-RP60/71/100KAL OCH452
OCB452
PSA-RP71/100/125/140KA PSA-RP71/100/125/140KA OCH528
OCB528
PEAD-RP35/50/60/71/100/125/140JA(L)Q PEAD-RP35/50/60/71/100/125/140JA(L)QR1.UK HWE10090
BWE10160
OCH544

3
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must be disconnected.
2SAFETY PRECAUTION
2-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
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 beaker.
• 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.
Use new refrigerant pipes.
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contaminants
such as sulfur, oxides, dirt, shaving particles, etc,
which are hazard to refrigerant cycle.
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.)
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
In case of using the existing pipes for R22, be careful with
the followings.
· Be sure to clean the pipes and make sure that the insides
of the pipes are clean.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
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.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrige-
rant 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 com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt 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 deterio-
ration 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 deterio-
ration of refrigerant oil etc.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
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.
Use the specified refrigerant only.
OCH544

4
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Tool name Specifications
1Gauge manifold · Only for R410A
· Use the existing fitting specifications. (UNF1/2)
· Use high-tension side pressure of 5.3MPa·G or over.
2Charge hose · Only for R410A
· Use pressure performance of 5.09MPa·G or over.
3Electronic scale —
4Gas leak detector · Use the detector for R410A.
5Adaptor for reverse flow check · Attach on vacuum pump.
6Refrigerant charge base —
7Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)
· Cylinder with syphon
8Refrigerant recovery equipment —
OCH544

5
2-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES
(1) Flowchart
Perform the airtight test, vacuum air purging,
additional refrigerant charging (if necessary),
and gas leak check.
• Refer to the f owchart below to determine if the existing pipes can be used and if it is necessary to use a f lter dryer.
• If the diameter of the existing pipes is different from the specif ed diameter, refer to technological data materials to conf rm if
the pipes can be used.
▼
▼
▼
▼
▼
▼▼
Measure the existing pipe thickness and
check for damage.
The existing pipe thickness meets specif ca-
tions and the pipes are not damaged.
Check if the existing air conditioner can operate.
After operating the cooling system for about 30
minutes, do a pump down work.
Disconnect the existing air conditioner from the
pipes.
Attach the new air conditioner
Test run The existing pipes cannot be reused.
Use new pipes.
* If the existing air conditioner cannot operate, use a
refrigerant recovery device to collect the refrigerant.
* If the existing pipes have been used for gas or oil
heat pump system, use new pipes.
The existing pipe thickness does not meet
specif cations or the pipes are damaged.
OCH544

6
(2) 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 0.7 mm 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 refriger-
ants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A has been speci-
fied 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 intensity as shown below. Set copper pipe correctly referring to copper pipe flaring
dimensions for R410A below. For 1/2 and 5/8 inch, 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 thermis-
tor 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 refri-
gerant 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 adap-
ter 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
OCH544

7
3 FEATURES
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
Max. 30m (Air conditioner side and hot water side total)
The refrigerant circuit with LEV (Linear Expansion Valve) always control the optimal refrigerant level regardless of the length
(Total 30 m max. and 5 m min.) of piping. The additional refrigerant charging work during installation often causes problems.
It is completely eliminated by chargeless system. This unique system improves the quality and reliability of the work done. It
also helps to speed up the installation time.
PUHZ-FRP71VHA
OCH544

8
4 SPECIFICATIONS
A
kW
W
kW
*
/min(CFM )
dB
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
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) %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
ATA Cooling
HR Cooling
ATA Heating
ATW Heating
W
D
H
Liquid
Gas
Liquid
Gas
ATA
ATW
ATA indoor side
ATW indoor side
Outdoor side
Height difference
Piping length
Service Ref. PUHZ-FRP71VHA
SNB172FSHM1
Propeller fan % 1
0.086
55 (1,940)
47
48
943 (37-1/8)
73 (161)
3.8 (8.4)
0.70 (FV50S)
Max. 60 m total, Max. 30 m for each
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)
9.52 (3/8)
15.88 (5/8)
Flared
Flared
Flared
Max. 20 m
HP switch
Comp. surface thermo
Discharge thermo
Single, 50 Hz, 230 V
OUTDOOR UNIT
REFRIGERANT PIPING
1.6
19
OCH544

9
5DATA
5-1. REFILLING REFRIGERANT CHARGE (R410A : kg)
U-V
U-W
W-V
Service Ref.
Compressor model
Winding
Resistance
( )
(at 20°C)
SNB172FSHM1
1.34
1.34
1.34
PUHZ-FRP71VHA
Additional charge is required for pipes
longer than total 30 m.
Service Ref.
Total piping length (one way) Initial
charged
10m 20m 30m 40m 50m 60m 75m
PUHZ-FRP71VHA 3.4 3.6 3.8 4.4 5.0 5.6 — 3.8
5-2. COMPRESSOR TECHNICAL DATA
5-3. 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-FRP71VHA
ATA Cooling,
HR Cooling
ATA Heating,
ATW Heating
MODE
47
SPL(dB)
48
LINE
OCH544

10
5-4. STANDARD OPERATION DATA
The unit of pressure has been changed to MPa based on international SI system.
The conversion factor is : 1(MPa)=10.2(kgf/cm²)
Representative matching PEAD-RP71JA
Plate HEX ACH70-40
Mode ATA Cooling ATA Heating ATW Heating HR Cooling
Total
ATA capacity W 7,100 8,000 — 7,100
ATW capacity W — — 8,000 9,000
Input kW 2.10 2.09 1.96 3.22
COP 3.38 3.83 4.08 5.00
Electrical circuit
Indoor unit PEAD-RP71JA
Phase, Hz 1 , 50 1 , 50 — 1 , 50
Voltage V 230 230 — 230
Current A 0.17 0.15 — 0.17
Outdoor unit PUHZ-FRP71VHA
Phase, Hz 1 , 50 1 , 50 1 , 50 1 , 50
Voltage V 230 230 230 230
Current A 9.15 9.12 8.70 13.97
Refrigerant circuit
Discharge pressure MPa 2.79 2.46 2.13 3.39
Suction pressure MPa 0.96 0.71 0.70 0.94
Discharge temperature °C 71 62 53 80
Condensing temperature °C 47 42 37 57
Suction temperature °C 10 0 0 9
Ref. pipe length m 5 + 5 5 + 5 5 + 5 5 + 5
ATA indoor
side
Intake air temperature DB °C 27 20 — 27
WB °C 19 15 — 19
Discharge air temperature DB °C 14.5 36 — 14.5
ATW side
Return temperature °C — — 30 50
Flow temperature °C — — 35 55
Flow rate L/min — — 23 23
Outdoor
side
Intake air temperature DB °C 35 7 7 35
WB °C 24 6 6 24
SHF 0.81 — — 0.81
BF 0.11 — — 0.11
OCH544

11
6OUTLINES AND DIMENSIONS
PUHZ-FRP71VHA Unit : mm
Dimensions of space needed for service access are shown in the below diagram.
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally.)
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. Explantion of particular details are given in the installation manuals etc.
Rear piping hole (Knockout)
Rear trunking hole (Knockout)
7323
5527
92
65
:
92
Power supply wiring hole (2-:27Knockout)
Front trunking hole (Knockout)
Front piping hole (Knockout)
45
65
92
40
63
23 73
55
27
:
92
Right piping hole (Knockout) Right trunking hole
(Knockout)
Power supply wiring hole (2-:27Knockout㧕
19 55
23 27 92
92
4075
73 63
:
92
Piping Knockout Hole Details
3 4 2
1
Refrigerant GAS pipe connection (FLARE)
:
15.88 (5/8F)
*Connect to indoor unit.
Refrigerant LIQUID pipe connection (FLARE)
:
9.52 (3/8F㧕
*Connect to indoor unit.
Refrigerant GAS pipe connection (FLARE)
:
15.88 (5/8F)
*Connect to cylinder unit or hydrobox.
Refrigerant LIQUID pipe connection (FLARE)
:
9.52 (3/8F㧕
*Connect to cylinder unit or hydrobox.
Example of Notes
This tap mark indicates the cylinder/hydro unit connection side for the following parts. ޓ࡮Terminal bed for the connecting cables, S1/S2/S3. ޓ࡮Stop valves, gas and liquid for the refrigerant connection.
BK79F295H01
Air Discharge
Side Air Intake
Rear Air Intake
2-12×36 oval holes (Foundation Bolt M10)
2-U Shaped notched holes (Foundfation Bolt M10)
Installation Feet
417
61
54
53
370 19
28
4142
4242
175
175 600
33030
4
3
Cylinder/Hydrobox wiring
Terminal Connections
1
2
Handle for moving Service panel
Terminal Connections
Left࡮࡮࡮Power supply wiring Right࡮࡮Indoor/Outdoor wiring
Earth terminal
Handle for moving
950
322
943
473
23
673
429
375
696
Rear piping cover
Front piping cover
Over 500mm Over 100mm
FREE
Over 10mm Over 10mm
Drain hole 㧔5-:33㧕
14514514522030
81 219
Handle for moving
Rear Air Intake
Handle for moving
Air Intake
Side Air Intake
Handle for moving
Over
Over
Over
Over
Less than
<Foundation bolt height>
30
FOUNDATION
10
500
500 100
Service space
OCH544

12
7WIRING DIAGRAM
PUHZ-FRP71VHA
TH6 TH7 TH3
U
63H
V
W
3
1
1
3
2
1
1
2
1
7
1
2
1
2
2
1
1
71412
13
3
1
5
1
121217
3
1
13
12
34
31
51
13
31
63HS
13
3131
14
1
TH34
12
TH4
21 51
51
MC
ACL
WHT
RED
WHT
RED
BLK
WHT
RED
TABR
TABS
PFC
C. B.
CNF1
(WHT) TH7/6
(RED)
TH3
(WHT)
TH4
(WHT)
TH34
(RED)
LEV-A
(WHT)
LEV-B
(RED)
63HS
(WHT)
t° t° t° t° t°
LEV-A LEV-CLEV-B
SW1
SW5SW4 SW6
SWP SW8
SW9 SW7
 
CNM
(WHT)
CN52C
(RED)
CNDM
(WHT)
CN51
(WHT)
CN31
P. B .
CNDC
(PNK)
TRANS
CN2
(WHT)
5
LED2 LED1
CN4
(WHT)
63H
(YLW)
CNS
(WHT)
CNS2
(BLU)
F2
F1
LEV-C
(BLU)
2
CNAC
(WHT)
F3
F4 21S4
(GRN)
SV1
(GRY)
SV2
(BLU)
SV3
(WHT)
X52 X54 X51 X55
2
21S4 SV1 SV2 SV3
MF1
RED
WHT
N.F.
2
2
t°
5
CN5
(RED)
CN4
(WHT)
CN3
(WHT)
CN2
(WHT)
TH8
IPM
TABU
TABV
TABW
CB1 CB2 CB3
CNAC2
(RED)
WHT
RED
L0 N0
LI NI EI
CNAC1
(WHT)
CN5
(RED)
CN52C
(BLK)
E3E2
52C
2
2
YLW
ORN
BRN
YLW
ORN
BRN
LN S1 S2 S3 S1 S2 S3
RED
BLU
GRN/YLW
CY1
CY2
CY3
CY4
TB1 TB2
POWER SUPPLY
~/N 230V 50Hz
Cylinder/ Hydrobox UNIT
Flow temperature controller
Indoor UNIT
MS
3~
MMM
MS
3~
MODEL SW6
1 MODEL SELECT
12345678
OFF
ON
SW5
123456
OFF
ON
71V
SW7
123456
OFF
ON
The black square (■) indicates a switch position.
TB1
MC
MF1
21S4
63H
TH4
TH6
TH7
TH8
LEV-A, LEV-B, LEV-C
ACL
Terminal Block<Power Supply, Indoor/Outdoor>
TB2 Terminal Block<Cylinder/HydroboxUNIT/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (Four-Way Valve)
SV1~3 Solenoid Valve
High Pressure Switch
63HS High Pressure Sensor
Thermistor<Discharge>
Thermistor<Outdoor 2-Phase Pipe>
Thermistor<Outdoor>
TH3 Thermistor<Outdoor Pipe>
Thermistor<Heat Sink>
TH34 Thermistor<Comp. Surface>
Linear Expansion Valve
Reactor
CY1~4 Capacitor
Power Circuit Board
P.B.
Noise Filter Circuit Board
Connection Terminal<L-Phase>
Connection Terminal<Ground>
N.F.
LI/LO
Connection Terminal<N-Phase>
NI/NO
EI,E2,E3
Controller Circuit Board
Switch<Forced Defrost, Defect History
Record Reset, Refrigerant Address>
Switch<Test Operation>
Switch<Function Switch, Model Select>
Switch<Function Switch, Model Select>
Switch<Pump Down>
SW1
SW4
SW5
SW7
Switch<Function Switch>
SW8
SWP
CN51
CNM
CNDM
Connector<A-Control Service Inspection Kit>
Connector
< Connected for Option (Contact Input)>
C.B.
Main Smoothing Capacitor CB1~CB3
52C Relay
52C
SYMBOL NAME SYMBOL NAME SYMBOL NAME
Connection Terminal<L/N-Phase>
TABR/S
Switch<Model Select>
SW6
Connector<Emergency Operation>
CN31
Switch<Function Switch>
SW9
X51,X52,X54,X55
Relay
Connector<Connection for Option>
Fuse<T6.3AL250V>
F1~4
LED
<Operation Inspection Indicators>
LED1,LED2
Converter PFC
Power Module IPM
Connection Terminal<U/V/W-Phase> TABU/V/W
OCH544

13
8WIRING SPECIFICATIONS
8-1. FIELD ELECTRICAL WIRING (power wiring specifications)
1
2
S1
S2
S3
S1
S2
S3
Indoor/outdoor
unit connection
cable
Indoor
unit
Unit
power
supply
Outdoor
unit
Remote
controller
L
N
 Earth leakage breaker
 wiring circuit breaker or
isolating switch

 Earth leakage breaker
 wiring circuit breaker or
isolating switch

L
N
1
2
1
2
S1
Indoor
unit
S2
S3
S1
S2
S3
S1
S2
S3
Unit
power
supply Indoor/outdoor
unit connection
cable
Indoor
unit
Outdoor
unit
Remote
controller
1:1 system electrical wiring Synchronized twin system electrical wiring
• Synchronized twin
Notes: 1. Wiring size must comply with the applicable local and national code..
2. Power supply cables and Indoor/Outdoor unit connecting cables shall not be lighter than polychloroprene sheathed flexible cable.
3. Install an earth longer than other cables.
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.
(Design 60245 IEC 57)
S1
S2
S3
S1
S2
S3
A-Control
Outdoor Unit
3 poles isolator
Power supply
Isolator
A-Control
Indoor Unit
Outdoor unit power supply ~/N (single), 50 Hz, 230 V
Outdoor unit input capacity Main switch (Breaker) *1 25 A
Wiring
Wire No. ×
size (mm²)
Outdoor unit power supply 3 × Min. 2.5
Indoor unit – Outdoor unit
Cylinder– or Hydrobox – Outdoor unit *2 3 × 1.5 (Polar)
Indoor unit – Outdoor unit earth
Cylinder– or Hydrobox – Outdoor unit earth *2 1 × Min. 1.5
Remote controller – Indoor unit
Cylinder– or Hydrobox-side remote controller – its unit *3 2 × 0.3 (Non-polar)
Circuit rating
Outdoor unit L – N (single)
Outdoor unit L1 – N, L2 – N, L3 – N (3 phase) *4 AC 230 V
Indoor unit – Outdoor unit S1-S2
Cylinder– or Hydrobox – Outdoor unit S1-S2 *4 AC 230 V
Indoor unit – Outdoor unit S2-S3
Cylinder– or Hydrobox – Outdoor unit S2-S3 *4 DC 24 V
Remote controller – Indoor unit
Cylinder– or Hydrobox-side remote controller – its unit *4 DC 12 V
*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. Max. 45 m
If 2.5 mm² used, Max. 50 m
If 2.5 mm² used and S3 separated, Max. 80 m
*3. The 10 m wire is attached in the remote controller accessory.
*4. The f gures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
Caution: Be sure to install N-Line. Without N-Line, it could cause damage to the unit.
OCH544

14
8-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
<For models without heater>
* The optional indoor power supply terminal kit is required.
S1
S2
L
N
1
2
L
N
S1
S2
S3
S3








* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Outdoor unit power supply
Earth leakage breaker
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Indoor unit
Option
Indoor unit power supply
Simultaneous twin system
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
<For models without heater>
*The optional indoor power supply terminal kit is required. 








Outdoor unit power supply
Earth leakage breaker
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cales
Remote controller
Indoor unit
Option
Indoor unit power supply
Indoor unit earth
If the indoor and outdoor units have separate power supplies, refer to the table below.
If the optional indoor power supply terminal kit is used, change the indoor unit
electrical box wiring referring to the figure in the right and the DIP switch settings of the
outdoor unit control board.
Indoor power supply terminal kit (option)
Indoor unit electrical box connector con-
nection change
Label affixed near each wiring diagram
for the indoor and outdoor units
Outdoor unit DIP switch settings (when
using separate indoor unit/outdoor unit
power supplies only)
Indoor unit specifications
Required
Required
Required
Electric heater
(For models with
heater)
Connectors (connections when shipped
from the factory are for indoor unit power
supplied from outdoor unit)
Indoor unit power supplied from outdoor unit
(when shipped from factory)
If the indoor and
outdoor units have
separate power
supplies, change the
connections of the
connectors as shown
in the following
figure.
Connectors
Indoor unit
control board
Separate indoor unit/outdoor unit power
supplies
Electric heater
(For models with
heater)
S1
S2
S3
L
N
BLUE BLUE
YELLOW YELLOW
CND
CND
ORANGE
CND
ORANGE
S1
S2
S3
L
N
YELLOW
BLUE
BLUE
YELLOW
CND
Indoor unit
control board
* There are 3 types of labels (labels A, B, and C). Affix the appropriate labels to
the units according to the wiring method.
ON
OFF
Set the SW8-3 to ON.
1 2 (SW8)
3







L
N
L
N
S1
S2
S3
S1
S2
S3
1
2
L
N
S1
S2
S3
1
2
  
*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
The breaker shall be provided to ensure disconnection of all active phase conductor of the supply.
*2. Max. 120 m
*3.The 10 m wire is attached in the remote controller accessory. Max. 500 m
*4.The figures are NOT always against the ground.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cables and indoor unit/outdoor unit connecting cables shall not be lighter than polychloroprene sheathed
flexible cable. (Design 60245 IEC 57)
3. Install an earth longer than other cables.
Indoor unit model
Indoor unit power supply
Indoor unit input capacity *1
Main switch (Breaker)
Indoor unit power supply
Indoor unit power supply earth
Indoor unit-Outdoor unit *2
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit *3
Indoor unit L-N *4
Indoor unit-Outdoor unit S1-S2 *4
Indoor unit-Outdoor unit S2-S3 *4
Remote controller-Indoor unit *4
RP71
~/N (single), 50 Hz, 230 V
16 A
2% Min. 1.5
1% Min. 1.5
2% Min. 0.3
–
2% 0.3 (Non-polar)
AC 230 V
–
DC24 V
DC12 V
Circuit
rating
Wiring
Wire No. % size
(mm
2
)
OCH544

15
9REFRIGERANT SYSTEM DIAGRAM
PUHZ-FRP71VHA Unit : mm (inch)
LEV-B
4-way valve
Compressor
Refrigerant flow in ATA Cooling
Refrigerant flow in ATA Heating
Refrigerant flow in HR Cooling
Refrigerant flow in ATW Heating
LEV-C
Charge
plug
Accumulator
TH6
LEV-A
TH3
High pressure
sensor (63HS)
High pressure
switch (63H)
Muffler
Charge plug
Stop valve
Stop valve
Stop valve
Stop valve
Service port
Service port
Service port
Service port
Refrigerant GAS pipe
connection (5/8F)
TH34
SV2SV1SV3
Indoor
unit TH4
Cylinder/
Hydrobox
unit
* SV1/SV2/SV3 are closed when the power is not supplied.
Refrigerant LIQUID pipe
connection (3/8F)
OCH544

16
9-2. START AND FINISH OF TEST RUN (ATA only)
• Operation from the indoor unit
Execute the test run using the installation manual for the indoor unit.
• Operation from the outdoor unit
By using the DIP switch SW4 on the control board of outdoor unit, test run can be started and finished, and its operation
mode (cooling/heating) can be set up.
1 Set the operation mode (cooling/heating) using SW4-2.
2 Turn on SW4-1 to start test run with the operation mode set by SW4-2.
3 Turn off SW4-1 to finish the test run.
• There may be a faint knocking sound around the machine room after power is supplied, but this is
no problem with product because the linear expansion pipe is just moving to adjust opening pulse.
• There may be a knocking sound around the machine room for several seconds after compressor
starts operating, but this is no problem with product because the check valve itself, generates the
sound because pressure difference is small in the refrigerant circuit.
Note:
The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1,
change the operation mode and restart the test run by SW4-1.)
OFF
12
ON
<SW4>


 Stop  Operation
 Cooling  Heating
9-1. REFRIGERANT COLLECTING (PUMP DOWN)
The refrigerant collecting function is available by performing the following procedure.
1 Close the 2 liquid stop valves and the cylinder/hydro unit side gas valve.
Only the indoor unit side gas valve remains open.
2 Connect the 2 gas stop valve service ports with a hose.
3 Turn on the main power and wait for 3-4 minutes.
4 Press the SWP button on the outdoor controller board, then the refrigerant collecting operation starts.
5 After conf rming the low pressure is lowered to 0 MPa (gauge), close the indoor unit side gas valve.
The refrigerant collecting operation stops automatically in 5 minutes.
6 Turn off the main power.
Warning:
Do not disconnect extension pipes during the refrigerant collecting operation is running.
If you open the stop valves to the air during the compressor is running, the pressure could be abnormal high level and this may
cause a rupture of the compressor or other hazardous situation.
* Use a refrigerant recovery machinery if the refrigerant collecting is not completed in case of long pipe length or too much refrig-
erant contained.
LEV-B
4-way valve
Compressor
LEV-C
Charge
plug
Accumulator
TH6
LEV-A
TH3
High pressure
sensor(63HS)
High pressure
switch (63H)
Muffler
Charge plug
Stop valve
Stop valve
Hose
Stop valve
Stop valve
Service port
Si t
Service port
Service port
TH34
SV2SV1SV3
Indoor
UNIT TH4
Cylinder/
Hydrobox
UNIT
*
SV1/SV2/SV3 are closed when the power is not supplied.
OCH544

17
10 TROUBLESHOOTING
<Error code display by self-diagnosis and actions to be taken for service (summary)>
Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit.
Actions to be taken for service, which depends on whether or not the trouble is reoccurring at service, are summarized in the
table below. Check the contents below before investigating details.
10-1. TROUBLESHOOTING
Unit conditions at service Error code Actions to be taken for service (summary)
The trouble is reoccurring.
Displayed
Not displayed
Judge what is wrong and take a corrective action according
to “10-4. Self-diagnosis action table”.
Conduct trouble shooting and ascertain the cause of the
trouble according to “10-5. Troubleshooting of problems”.
The trouble is not reoccurring.
Logged
Not logged
Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise and etc.
Re-check the symptom, and check the installation
environment, refrigerant amount, weather when the
trouble occurred, matters related to wiring
and etc.
Reset error code logs and restart the unit after finishing
service.
There is no abnormality in electrical component,
controller board, remote controller and etc.
Re-check the abnormal symptom.
Conduct trouble shooting and ascertain the cause of the
trouble
according to “10-5. Troubleshooting of problems”.
Continue to operate unit for the time being if the cause
is not ascertained.
There is no abnormality concerning of parts such as
electrical component, controller board, remote controller
and etc.
10-2. CHECK POINT UNDER TEST RUN
10-2-1. Before test run
• After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leak-
age, loosened connections and incorrect polarity.
• Measure impedance between the ground and the power supply terminal block (L, N) on the outdoor unit by 500V Megger
and check that it is 1.0M" or over.
*
Do not use 500V Megger to indoor/outdoor connecting wire terminal block (S1, S2, S3) and remote controller terminal block (1, 2).
This may cause malfunction.
• Make sure that test run switch (SW4) is set to OFF before turning on power supply.
• Turn on power supply 12 hours before test run in order to protect compressor.
• For specific models which require higher ceiling settings or auto-recovery feature from power failure, make proper changes of
settings referring to the description of “12. FUNCTION SETTING”.
Make sure to read operation manual before test run. (Especially items to secure safety.)
OCH544

18
F1 F2 F3 F4
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Test run
Input maintenance info.
Function setting
Check
Self check
F1 F2 F3 F4
Test run menu
Cursor
Service menu:
Test run
Drain pump test run
1 Select "Service" from the Main menu, and press the button.
2 Select "Test run" with the F1 or F2 button, and press the button.
Select "Test run" with the F1 or F2 button, and press the button.
F1 F2 F3 F4
Cool
Pipe
Auto
Switch disp.
Mode Fan
RemainTest run
F1 F2 F3 F4
Remain
Vane
Cool mode: Check the cold air blow off.
Heat mode: Check the heat blow off.
Press the F1 button to go through the operation modes in the order of "Cool
and Heat".
Check the auto vane with the F1 F2 buttons.
* Check the operation of the outdoor unit’s fan.
Press the button to return to “Test run operation”.
Press the button.
When the test run is completed, the “Test run menu” screen will appear.
* The test run will automatically stop after two hours.
Test run operation
Auto vane check
Press the button and open the Vane setting screen.
Function buttons
F1 F2 F3 F4
MENU RETURN SELECT ON/OFF
10-2-2. Test run for wired remote controller <PAR-31MAA>
OCH544

19
F1 F2 F3 F4
Error information
Error code
Error unit IU
Ref. address Unt#
Model name
Serial No.
ResetPage
Error information
Contact information
Dealer
Tel
ResetPage
Reset error: Reset button
Reset error: Reset button
blinks
1 Error code, error unit, refrigerant address, unit model name, and serial
number will appear.
The model name and serial number will appear only if the information have
been registered.
Press the F1 or F2 button to go to the next page.
When an error occurs, the following screen will appear.
Check the error status, stop the operation, and consult your dealer.
Contact information (dealer's phone number) will appear if the information have
been registered.
F1 F2 F3 F4
F1 F2 F3 F4
Error information
Error reset
Error reset
Error code
Error unit IU
Ref. address Unt#
Model name
Serial No.
ResetPage
Reset current error?
Error reset
OKCancel
Main menu:
Reset error: Reset button
blinks
2 Press the F4 button or the button to reset the error that is occurring.
Errors cannot be reset while the ON/OFF operation is prohibited.
Select "OK" with the F4 button.
Navigating through the screens
• To go back to the Main menu .......... button
<Error information>
OCH544

20
F1 F2 F3 F4
Main
Main display:
Cursor Page
Main menu
Restriction
Energy saving
Night setback
Filter information
Error information
While no errors are occurring, page 2/2 of the error information can be viewed by
selecting "Error information" from the Main menu.
Errors cannot be reset from this screen.
<Checking the error information>
<Error history>
F1 F2 F3 F4
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Test run
Input maintenance info.
Function setting
Check
Self check
Check menu
Cursor
Service menu:
Error history
Refrigerant volume check
Refrigerant leak check
Smooth maintenance
Request code
F1 F2 F3 F4
Error history
Page Delete
Check menu:
Error Unt# dd/ mm /yy
Error history
Cancel OK
Delete error history?
Error history
Check menu:
Error history deleted
2 Select "Error history" with the F1 or F2 button, and press the button.
Select "Check" with the F1 or F2 button, and press the button.
3 Select "Error history" from the Check menu, and press the button to view
up to 16 error history records.
Four records are shown per page, and the top record on the f rst page
indicates the latest error record.
Error history
4 To delete the error history, press the F4 button (Delete) on the screen that
shows error history.
A conf rmation screen will appear asking if you want to delete the error history.
Press the F4 button (OK) to delete the history.
"Error history deleted" will appear on the screen.
Press the button to go back to the Check menu screen.
Deleting the error history
1 Select "Service" from the Main menu, and press the button.
OCH544