Mitsubishi Electric PUH-P2.5VGAA User manual

SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
CONTENTS
1. REFERENCE MANUAL··································3
2. SAFETY PRECAUTION··································4
3. PART NAMES AND FUNCTIONS ··················6
4. SPECIFICATIONS···········································7
5. DATA ·····························································11
6. OUTLINES AND DIMENSIONS····················18
7. WIRING DIAGRAM·······································22
8. WIRING SPECIFICATIONS ··························24
9. REFRIGERANT SYSTEM DIAGRAM ··············28
10. TROUBLESHOOTING··································30
11. FUNCTION SETTING ···································65
12. DISASSEMBLY PROCEDURE·····················71
13. PARTS LIST··················································75
Outdoor unit
[model names]
PUH-P25VGAA
PUH-P35VGAA PU-P35VGAA
PUH-P35YGAA PU-P35YGAA
PUH-P50VGAA PU-P50VGAA
PUH-P50YGAA PU-P50YGAA
PUH-P60VGAA PU-P60VGAA
PUH-P60YGAA PU-P60YGAA
PUH-P71VGAA PU-P71VGAA
PUH-P71YGAA PU-P71YGAA
PUH-P100VGAA PU-P100VGAA
PUH-P100YGAA PU-P100YGAA
PUH-P125YGAA PU-P125YGAA
PUH-P140YGAA PU-P140YGAA
No.OC336
R407C
[Service Ref.]
Service Ref. is on page 2.
August 2005
• This manual describes only
service data of the outdoor
units.
OC336--1.qxp 05.8.29 7:18 PM Page 1

2
[Service Ref.]
PUH-P25VGAA.UK
PUH-P35VGAA.UK PU-P35VGAA.UK
PUH-P35YGAA.UK PU-P35YGAA.UK
PUH-P50VGAA.UK PU-P50VGAA.UK
PUH-P50YGAA.UK PU-P50YGAA.UK
PUH-P60VGAA.UK PU-P60VGAA.UK
PUH-P60YGAA.UK PU-P60YGAA.UK
PUH-P71VGAA.UK PU-P71VGAA.UK
PUH-P71YGAA.UK PU-P71YGAA.UK
PUH-P100VGAA.UK PU-P100VGAA.UK
PUH-P100YGAA.UK PU-P100YGAA.UK
PUH-P125YGAA.UK PU-P125YGAA.UK
PUH-P140YGAA.UK PU-P140YGAA.UK
OC336--1.qxp 05.8.29 7:18 PM Page 2

3
1-1. INDOOR UNIT'S SERVICE MANUAL
Model name Service Ref. Service
Manual No.
PLA-RP35/50/60/71AA PLA-RP35/50/60/71AA.UK OC335
PLA-RP100/125/140AA PLA-RP100/125/140AA.UK
PLH-P35/50/60/71AAH PLH-P35/50/60/71AAH.UK
PLH-P100/125/140AAH PLH-P100/125/140AAH.UK
PMH-P25/35/50BA PMH-P25/35/50BA OC333
PCA-RP50/60/71/100/125/140GA PCA-RP50/60/71/100/125/140GA OC328
PCH-P50/60/71/100/125/140GAH PCH-P50/60/71/100/125/140GAH
PCA-RP71/125HA PCA-RP71/125HA OC329
PKA-RP35/50GAL PKA-RP35/50GAL OC330
PKH-P35/50GALH PKH-P35/50GALH
PKA-RP60/71/100FAL PKA-RP60/71/100FAL OC331
PKH-P60/71/100FALH PKH-P60/71/100FALH
PSA-RP71/100/125/140GA PSA-RP71/100/125/140GA OC332
PSH-P71/100/125/140GAH PSH-P71/100/125/140GAH
PEAD-RP35/50/60/71EA PEAD-RP35/50/60/71EA.UK -
PEAD-RP100/125/140EA PEAD-RP100/125/140EA.UK
PEHD-P35/50/60/71EAH PEHD-P35/50/60/71EAH.UK -
PEHD-P100/125/140EAH PEHD-P100/125/140EAH.UK
PEAD-RP60/71/100GA PEAD-RP60/71/100GA.UK -
1-2. TECHNICAL DATA BOOK
1REFERENCE MANUAL
Manual No.OCS02
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4
SAFETY PRECAUTION
2
[2] Refrigerant recharging
(1) Refrigerant recharging process
1Direct charging from the cylinder.
·R407C cylinder are available on the market has a syphon pipe.
·Leave the syphon pipe cylinder standing and recharge it.
(By liquid refrigerant)
(2) Recharge in refrigerant leakage case
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release the refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
[1] Cautions for service
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
Cautions for units utilising refrigerant R407C
CAUTIONS RELATED TO NEW REFRIGERANT
Do not use the existing refrigerant piping.
The old refrigerant and lubricant in the existing piping
contains a large amount of chlorine which may cause the
lubricant deterioration of the new unit.
Use “low residual oil piping”
If there is a large amount of residual oil (hydraulic oil, etc.)
inside the piping and joints, deterioration of the lubricant
will result.
Use ESTER , ETHER or HAB as the lubricant to
coat flares and flange connection parts.
If large amount of mineral oil enter, that can cause
deterioration of refrigerant oil etc.
Use liquid refrigerant to charge the system.
If gas refrigerant is used to seal the system, the composition
of the refrigerant in the cylinder will change and performance
may drop.
Do not use a refrigerant other than R407C.
If another refrigerant (R22, etc.) is used, the chlorine in the
refrigerant may cause the lubricant deterioration.
Use a vacuum pump with a reverse flow check valve.
The vacuum pump oil may flow back into the refrigerant
cycle and cause the lubricant deterioration.
Store the piping to be used during installation
indoors with keep both ends sealed until just
before brazing.
(Store elbows and other joints in a plastic bag.)
If dust, dirt, or water enters the refrigerant cycle,
deterioration of the oil and compressor trouble may result. Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Gravimeter
Unit
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5
[3] Service tools
Use the below service tools as exclusive tools for R407C refrigerant.
No. Tool name Specifications
1Gauge manifold ·Only for R407C.
·Use the existing fitting SPECIFICATIONS. (UNF7/16)
·Use high-tension side pressure of 3.43MPa·G or over.
2Charge hose ·Only for R407C.
·Use pressure performance of 5.10MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R134a or R407C.
5Adapter for reverse flow check. ·Attach on vacuum pump.
6Refrigerant charge base.
7Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)
·Cylinder with syphon
8Refrigerant recovery equipment.
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6
3PART NAMES AND FUNCTIONS
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
PU/PUH-P25, P35, P50, P60 : max 20m
PU/PUH-P71, P100, P125, P140 : max 30m
The refrigerant circuit with LEV(Linear Expansion Valve) and a large accumulator always control the optimal refrigerant
level regardless of the length (20/30m max. and 5m min.) 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.
Air intake
Air outlet
(Expels warm air during cooling)
Air intake
Air outlet
Air intake Air outlet
Air intake
Air outlet
PUH-P25VGAA.UK
PUH-P35VGAA.UK
PUH-P35YGAA.UK
PU-P35VGAA.UK
PU-P35YGAA.UK
PUH-P50VGAA.UK PUH-P50YGAA.UK
PUH-P60VGAA.UK PUH-P60YGAA.UK
PUH-P71VGAA.UK PUH-P71YGAA.UK
PU-P50VGAA.UK PU-P50YGAA.UK
PU-P60VGAA.UK PU-P60YGAA.UK
PU-P71VGAA.UK PU-P71YGAA.UK
PUH-P100VGAA.UK
PUH-P100YGAA.UK
PU-P100VGAA.UK
PU-P100YGAA.UK
PUH-P125YGAA.UK
PUH-P140YGAA.UK
PU-P125YGAA.UK
PU-P140YGAA.UK
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7
4SPECIFICATIONS
A
A
kW
W
kW
K
/min(CFM )
dB
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
Mode
Power supply (phase, cycle, voltage)
Running current
Max current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
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
OUTDOOR UNIT
REFRIGERANT PIPING
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PUH-P25VAA.UK
PUH-P35VGAA / YGAA.UK
Cooling
5.32
Single,50Hz,230V
7.23
RE189VHSMT
0.9
45(1,590)
46
48
50(110)
1.7(3.8)
6.35(1/4)
12.7(1/2)
Max. 30m
Max. 30m
Munsell 5Y 7/1
Linear Expansion Valve
Hermetic
Line start
30
Plate fin coil
Propeller (direct) o1
0.07
Reverse cycle
900(35-7/16)
330+20(13+3/4)
650(25-5/8)
R407C
0.57(Ester)MEL56
Flared
Flared
Heating
4.89
Cooling
7.61 / 2.54
Single,50Hz,230V / 3-ph,50Hz,400V
10.67/5.4
RE277VHSMT/RE277YFKM
1.3
45(1,590)
47
49
54(119)
2.5(5.5)
9.52(3/8)
15.88(5/8)
Max. 40m
Max. 40m
Heating
7.85 / 2.62
Internal thermostat
HP switch
Discharge thermo
Thermal relay
HP switch
Discharge thermo
Internal thermostat
HP switch
Discharge thermo
4-1. HEAT PUMP
A
A
kW
W
kW
K
/min(CFM )
dB
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
Mode
Power supply (phase, cycle, voltage)
Running current
Max current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
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
OUTDOOR UNIT
REFRIGERANT PIPING
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PUH-P50VGAA / YGAA.UK PUH-P60VGAA / YGAA.UK
Cooling
10.97 / 3.98
15.35 /7.0
NE36VMJMT / NE36YEKMT
1.6
55(1,940)
49
74(163)
2.6(5.7)
Max. 40m
Max. 40m
Single, 50Hz, 230V / 3-ph, 50Hz,400V(4wires)
Munsell 5Y 7/1
Linear Expansion Valve
Hermetic
Line start
38
Plate fin coil
Propeller (direct) o1
0.07
Reverse cycle
48
900(35-7/16)
330+20(13+3/4)
855(33-5/8)
R407C
1.2 (Ester)MEL56
9.52(3/8)
15.88(5/8)
Flared
Flared
Heating
11.30 / 3.95
Cooling
13.27 / 4.43
18.03 / 7.7
NE41VMJMT / NE41YEKMT
1.9
50(1,770)
50
79(174)
3.1(6.8)
Max. 50m
Max. 50m
Heating
12.84/ 4.29
Internal thermostat
HP switch
Discharge thermo
Thermal relay
HP switch
Discharge thermo
OC336--1.qxp 05.8.29 7:18 PM Page 7

8
A
A
kW
W
kW
K
/min(CFM )
dB
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
Mode
Power supply (phase, cycle, voltage)
Running current
Max current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
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
OUTDOOR UNIT
REFRIGERANT PIPING
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PUH-P100VGAA / YGAA.UK
PUH-P71VGAA / YGAA.UK
Cooling
15.66 / 5.23
22.66 / 10.8
NE52VNJMT / NE52YDKMT
2.5
Propeller (direct) o1
0.07
50(1,770)
49
51
855(33-5/8)
79(174)
3.3(7.3)
15.88(5/8)
Single, 50Hz, 230V / 3-ph, 50Hz, 400V(4wires)
Munsell 5Y 7/1
Linear Expansion Valve
Hermetic
Line start
38
Plate fin coil
Reverse cycle
900(35-7/16)
330+20(13+3/4)
R407C
1.3 (Ester)MEL56
9.52(3/8)
Flared
Flared
Max. 50m
Max. 50m
Heating
16.67 / 5.56
Cooling
16.43/ 5.48
23.57 / 10.8
NE56VNJMT / NE56YDKMT
2.7
Propeller (direct) o2
0.07+0.07
85(3,000)
51
53
1,260(49-5/8)
97(214)
4.0(8.8)
19.05(3/4)
Heating
17.34 / 5.79
Internal thermostat
HP switch
Discharge thermo
Thermal relay
HP switch
Discharge thermo
A
A
kW
W
kW
K
/min(CFM )
dB(A)
dB(A)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
Mode
Power supply (phase, cycle, voltage)
Running current
Max current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
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
OUTDOOR UNIT
REFRIGERANT PIPING
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PUH-P125YGAA.UK
Cooling
8.92 20.4
BE96YADMT
4.2
100(3,530)
57
58
4.9(10.8)
3-ph, 50Hz, 400V(4wires)
Munsell 5Y 7/1
Linear Expansion Valve
Hermetic
Line start
Thermal relay, HP switch, Discharge thermo
38
Plate fin coil
Propeller (direct) o2
0.07 +0.07
Reverse cycle
1,050(41-5/16)
330+20(13+3/4)
1,260(49-5/8)
125(276)
R407C
1.7 (Ester) MEL56
9.52(3/8)
19.05(3/4)
Flared
Flared
Max. 50m
Max. 50m
Heating
9.45
Cooling
7.52 18.0
BE82YADMT
3.5
95(3,360)
55
56
4.6(10.1)
Heating
8.06
PUH-P140YGAA.UK
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9
A
A
kW
W
kW
K
/min(CFM )
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
Mode
Power supply (phase, cycle, voltage)
Running current
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
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
OUTDOOR UNIT
REFRIGERANT PIPING
Cooling
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref.
PU-P35VGAA / YGAA.UK PU-P50VGAA / YGAA.UK PU-P60VGAA / YGAA.UK
Cooling
7.61 / 2.54
10.67 / 5.4
RE277VHSMT/RE277YFKM
1.3
30
45(1,590)
47
650(25-5/8)
54(119)
2.5(5.5)
0.57 (Ester)MEL56
Single, 50Hz, 230V / 3-ph, 50Hz, 400V(4wires)
10.97 / 3.98
15.35 / 7.0
Munsell 5Y 7/1
Linear Expansion Valve
Hermetic
NE36VMJMT/NE36YEKMT
1.6
Line start
Internal thermostat, HP switch, Discharge thermo / Thermal relay,Discharge thermo,HP switch
Plate fin coil
Propeller (direct) o1
0.07
55(1,940)
—
900(35-7/16)
330+20(13+3/4)
74(163)
R407C
2.6(5.7)
9.52(3/8)
15.88(5/8)
Flared
Flared
Cooling
38
48
855(33-5/8)
1.2 (Ester)MEL56
13.27 / 4.43
18.03 / 7.7
NE41VMJMT/NE41YEKMT
1.9
50(1,770)
79(174)
3.1(6.8)
Max. 50m
Max. 50m
Cooling
Max. 40m
Max. 40m
4-2. COOLING ONLY TYPE
A
A
kW
W
kW
K
/min(CFM )
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
Mode
Power supply (phase, cycle, voltage)
Running current
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
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
OUTDOOR UNIT
REFRIGERANT PIPING
Cooling
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PU-P71VGAA / YGAA.UK PU-P100VGAA / YGAA.UK
Cooling
15.66 / 5.23
22.66 / 10.8
NE52VNJMT / NE52YDKMT
2.5
Propeller (direct) o1
0.07
50(1,770)
49
855(33-5/8)
79(174)
3.3(7.3)
15.88(5/8)
Single, 50Hz, 230V / 3-ph, 50Hz, 400V(4wires)
Munsell 5Y 7/1
Linear Expansion Valve
Hermetic
Line start
38
Plate fin coil
—
900(35-7/16)
330+20(13+3/4)
R407C
1.3 (Ester)MEL56
9.52(3/8)
Flared
Flared
Max. 50m
Max. 50m
Cooling
16.43/ 5.48
23.57 / 10.8
NE56VNJMT / NE56YDKMT
2.7
Propeller (direct) o2
0.07+0.07
85(3,000)
51
1,260(49-5/8)
97(214)
4.0(8.8)
19.05(3/4)
Internal thermostat
HP switch
Discharge thermo
Thermal relay
HP switch
Discharge thermo
OC336--1.qxp 05.8.29 7:18 PM Page 9

10
A
A
kW
W
kW
K
/min(CFM )
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
Mode
Power supply (phase, cycle, voltage)
Running current
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
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
OUTDOOR UNIT
REFRIGERANT PIPING
Cooling
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PU-P125YGAA.UK PU-P140YGAA.UK
Cooling
8.92
20.4
BE96YADMT
4.2
100(3,530)
57
4.9(10.8)
3-ph, 50Hz,400V(4wires)
Munsell 5Y 7/1
Linear Expansion Valve
Hermetic
Line start
Thermal relay, HP switch, Discharge thermo
38
Plate fin coil
Propeller (direct) o2
0.07+0.07
—
1,050(41-5/16)
330+20(13+3/4)
1,260(49-5/8)
125(276)
R407C
1.7 (Ester) MEL56
9.52(3/8)
19.05(3/4)
Flared
Flared
Max. 50m
Max. 50m
Cooling
7.52
18.0
BE82YADMT
3.5
95(3,360)
55
4.6(10.1)
OC336--1.qxp 05.8.29 7:18 PM Page 10