Mitsubishi Electric PEHD-P1.6EAH Operating manual

TECHNICAL & SERVICE MANUAL
<indoor unit> Service ref.
Models PEHD-P1.6EAH
PEHD-P2EAH
PEHD-P2.5EAH
PEHD-P3EAH
PEHD-P4EAH
PEHD-P5EAH
PEHD-P6EAH
PEAD-P1.6EA
PEAD-P2EA
PEAD-P2.5EA
PEAD-P3EA
PEAD-P4EA
PEAD-P5EA
PEAD-P6EA
TM
1. COMBINATION OF INDOOR AND
OUTDOOR UNITS ····································· 1
2. SAFETY PRECAUTION ···························· 2
3. PART NAMES AND FUNCTIONS ············· 4
4. SPECIFICATION ······································· 7
5. DATA ························································ 15
6. REFRIGERANT SYSTEM DIAGRAM ······ 36
7. OUTLINES & DIMENSIONS ···················· 37
8. WIRING DIAGRAM ·································· 39
9. DISASSEMBLY INSTRUCTIONS ············ 40
10 . PARTS LIST ············································· 42
11 . OPTIONAL PARTS ·································· 49
CONTENTS
INDOOR UNIT
REMOTE CONTROLLER
This manual does not cover the
following outdoor units. When
servicing them, please refer to
the service manual No.OC180
REVISED EDITION-A and this
manual as a set.
PUH-P1.6VGA PU-P1.6VGA
PUH-P1.6YGA PUH-P2VGA
PU-P2VGA PUH-P2YGA
PUH-P2.5VGA1PU-P2.5VGA1
PUH-P2.5YGA1
PUH-P3VGA PU-P3VGA
PUH-P3YGA PU-P3YGA
PUH-P4YGA PU-P4YGA
PUH-P5YGA PU-P5YGA
PUH-P6YGA PU-P6YGA
ON/OFF
TEMP.
Series PEHD/PEAD R407C
2004
SPLIT-TYPE, HEAT PUMP
AIR CONDITIONERS

1
COMBINATION OF INDOOR AND OUTDOOR UNITS
1
Heat pump type
Outdoor unit
PUH-P · VGA / YGA
Cooling only type
PU-P · VGA / YGA
Heat pump with
electric heater
PEHD-P3EAH
PEHD-P4EAH
PEHD-P5EAH
PEHD-P6EAH
PEAD-P3EA
PEAD-P4EA
PEAD-P5EA
PEAD-P6EA
Heat pump without
electric heater
or Cooling only
6YGA
—
—
—
—
—
—
—
5YGA
—
—
—
—
—
—
—
4YGA
—
—
—
—
—
—
—
3YGA
—
—
—
—
—
—
—
3VGA
—
—
—
—
—
—
—
6YGA
—
—
—
—
—
—
5YGA
—
—
—
—
—
—
4YGA
—
—
—
—
—
—
3YGA
—
—
—
—
—
—
3VGA
—
—
—
—
—
—
Indoor unit
Heat pump type
Outdoor unit
PUH-P · VGA / YGA
Cooling only type
PU-P · VGA / YGA
Heat pump with
electric heater
PEHD-P1.6EAH
PEHD-P2EAH
PEHD-P2.5EAH
PEAD-P1.6EA
PEAD-P2EA
PEAD-P2.5EA
Heat pump without
electric heater
or Cooling only
2.5VGA1
—
—
—
—
—
2VGA
—
—
—
—
—
1.6VGA
—
—
—
—
—
2.5YGA1
—
—
—
—
2.5VGA1
—
—
—
—
2YGA
—
—
—
—
2VGA
—
—
—
—
1.6YGA
—
—
—
—
1.6VGA
—
—
—
—
Indoor unit

2
Cautions for using with the outdoor unit which adopts R407C refrigerant.
•Do not use the existing refrigerant piping.
-The old refrigerant and refrigerant oil in the existing piping contains a large amount of chlorine which may cause the refrig-
erant oil of the new unit to deteriorate.
•Do not use copper pipes which are broken, deformed or discolour.
In addition, be sure that the inner surfaces of the pipes are clean, free of hazardous sulphur and oxides, or have no dust /
dirt, shaving particles, oils, moisture or any other contamination.
-If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the refrigerant oil will
result.
•Store the piping to be used during installation indoors and keep both ends of the piping 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.
•Use ester oil, ether oil or alkyl benzene (small amount) as the refrigerant oil to coat flares and flange connec-
tions.
-The refrigerant oil will degrade if it is mixed with a large amount of mineral oil.
Use liquid refrigerant to fill the system.
-If gas refrigerant is used to fill 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 refrigerant oil to deteriorate.
•Use a vacuum pump with a reverse flow check valve.
-The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerant oil to deteriorate.
•Do not use the following tools that are used with conventional refrigerant.
(Gauge manifold , charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, vacuum gauge, refrig-
erant recovery equipment)
-If the conventional refrigerant and refrigerant oil are mixed in the R407C, the refrigerant may deteriorated.
-If water is mixed in the R407C, the refrigerant oil may deteriorate.
-Since R407C does not contain any chlorine, gas leak detectors for conventional refrigerant will not react to it.
•Do not use a charging cylinder.
-Using a charging cylinder may cause the refrigerant to deteriorate.
•Be especially careful when managing the tools.
-If dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate.
•Do not use the drier which is sold in the field.
-The drier for R407C refrigerant is per-attached to outdoor unit refrigerant circuit.
-Some drier in the field are not in conformity with R407C refrigerant .
SAFETY PRECAUTION
2

3
[3] Refrigerant recharging
(1) Refrigerant recharging process
1Direct charging from the cylinder.
·R407C cylinder are available on the market with a syphon pipe.
·Leave the syphon pipe cylinder standing and recharge it. (By liquid refrigerant)
(2) Recharge in refrigerant leakage case
·After recovering all the refrigerant in the unit, repairs/servicing can proceed.
·Do not release the refrigerant in the air.
·After completing the repair service, recharge the circuit with the specified amount of liquid refrigerant.
Gravimeter
Unit
[1] 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 R407C.
5Adaptor 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.
[2] Notice on repair service
·After recovering all the refrigerant in the unit, repairs/servicing can proceed.
·Do not release refrigerant in the air.
·After completing the repair service, recharge the circuit with the specified amount of liquid refrigerant.

4
PART NAMES AND FUNCTIONS
3
●Indoor Unit
A
A
In case of rear inlet
Air intake (sucks
the air inside the
room into the
unit)
Air outlet
In case of bottom inlet
(Only 1.6~2.5HP)

5
●Remote controller
●Operation buttons
●Once the operation of the unit is set, subsequent operations can be
performed only by pressing the ON/OFF button repeatedly.
1[Room temperature adjustment] Button
2[Timer/continuous] Button
3[Selecting operation] Button
4[Time selection] Button
[Time-setting] Button
5[Louver] Button (This button does not operate in this model)
6[Fan speed adjustment] Button
7[Up/down airflow direction] Button (This button does not operate in this model)
8[Ventilation] Button
9[Checking/built-in] Button
0[Test run] Button
A[Filter] Button (This button does not operate in this model)
B[ON/OFF] Button
CPosition of built-in room temperature
•Never expose the remote controller to direct sunlight. Doing so can result in the erroneous measurement of room tempera-
ture.
•Never place any obstacle around the lower right-hand section of the remote controller. Doing so can result in the erroneous
measurement of room temperature.
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
1
2
3
456 879
0
C
A
B

6
●Display
ACurrent time/Timer
BCentralized control
CTimer ON
DAbnormality occurs
EOperation mode: COOL, DRY, AUTO, FAN,
HEAT
FPreparing for Heating mode
GDefrost mode
HSet temperature
IPower ON
JLouver
KNot available function
LVentilation
MFunction setting mode
NTest run mode
OError check mode
PFilter sign
QSet effective for 1 hr.
RSensor position
SRoom temperature
TAirflow
UFan speed
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
TEMP.
ABCD
E
F
HIKLJ
M
P
N
O
R
SQTU
G
Caution
•Power ON display lights up when unit is in standby mode.
•When power is turned ON for the first time the (CENTRAL CTRL) display appears to go off momentarily but this is not
a malfunction.
•When the central control remote control unit, which is sold separately, is used the ON-OFF button, operation switch but-
ton and TEMP. adjustment button do not operate.
•“NOT AVAILABLE” is displayed when the Airflow direction button or Louver button are pressed.This indicates that this
room unit is not equipped with the fan direction adjustment function and the louver function.
•When power is turned ON for the first time, it is normal that “H0” is displayed on the room temperature indication (For
max. 2minutes). Please wait until this “H0” indication disappear then start the operation.

7
4SPECIFICATION
1. Heat pump type Rating Conditions (ISO T1)
Service Ref. With Electric heater PEHD-P1.6EAH PEHD-P2EAH
Item Without Electric heater PEAD-P1.6EA PEAD-P2EA
Function Cooling Heating Cooling Heating
Capacity ✻1Btu/h 15,300 16,700 (20,100) 18,900 21,000 (24,400)
W 4,500 4,900 (5,900) 5,550 6,150 (7,150)
Total input ✻1kW1.75 1.80 (2.80) 2.44 2.22 (3.22)
Service Ref. With Electric heater PEHD-P1.6EAH PEHD-P2EAH
Without Electric heater PEAD-P1.6EA PEAD-P2EA
Power supply Single phase,50Hz,220-240V
Input ✻2kW 0.13 0.13 <1.13> 0.15 0.15 <1.15>
Running current ✻2A 0.55 0.55 <4.71> 0.63 0.63 <4.79>
Starting current ✻2A – – – –
External finish Galvanized sheets
Heat exchanger Plate fin coil
Fan Fan (drive) ×No. Centrifugal (direct) ×2
Fan motor output kW 0.043 (at 70 Pa) 0.076 (at 70 Pa)
Airflow (Lo-Hi) m3/min (CFM) 11-14 <388-494> 13.5-17 <477-600>
External static pressure Pa (mmAq) 30/70
Booster heater ✻2kW <1.0> <1.0>
Operation control & Thermostat Built in remote controller
Noise level (Lo-Hi) dB 34-38 36-40
Unit drain pipe O.D mm (in.) 32 (1-1/4)
Dimensions
W mm (in.) 935 (36-13/16)
D mm (in.) 700 (27-5/8)
H mm (in.) 295 (11-5/8)
Weight With Electric heater kg (lbs) 35 (77) 35 (77)
Without Electric heater kg (lbs) 33 (73) 33 (73)
Service Ref. PUH-P1.6VGA/YGA PUH-P2VGA/YGA
Power supply Single phase,50Hz,220-240V / 3 phase,50Hz,380-415V (4 wires)
Input kW 1.62 1.67 2.44 2.22
Running current A 7.43/2.67 7.43/2.86 10.39/3.88 9.36/4.02
Starting current A 36/20 74/30
External finish Munsell 5Y 8/1
Refrigerant control Linear Expansion Valve
Compressor Hermetic
Model RE277VHSM/RE277YFKM NE38VMJM/NE38YEJM
Motor output kW 1.3 1.7
Starter type Line start
Protection devices VGA…Inner thermostat, HP switch, Discharge thermo.
YGA…Thermal relay, Discharge thermo, HP switch, Anti-phase protector.
Crankcase heater W 30 38
Heat exchanger Plate fin coil
Fan Fan (drive) ×No. Propeller (direct) × 1 Propeller (direct) ×1
Fan motor output kW 0.070 0.070
Airflow m3/min (CFM) 45 (1,590) 55 (1,940)
Defrost method Reverse cycle
Noise level Cooling dB 46 48
Heating dB 48 49
Dimensions W mm (in.) 900 (35-7/16)
D mm (in.) 330+20 (13+3/4)
H mm (in.) 650 (25-5/8) 855 (33-5/8)
Weight kg (lbs) 55 (121) 71 (157)
Refrigerant R407C
Charge kg (lbs) 2.6 (5.7) 3.1 (6.8)
Oil (Model) L 0.57 (Ester) MEL56 1.2 (Ester) MEL56
Pipe size O.D Liquid mm (in.) 9.52 (3/8)
Gas mm (in.) 15.88 (5/8)
Connection method Indoor side Flared
Outdoor side Flared
Between the indoor &
outdoor unit Height difference Max.40m
Piping length Max.40m
Notes 1. Rating Conditions (ISO T1)
3. Above data based on indicated voltage
Indoor Unit: Single phase 240V 50Hz
Outdoor Unit: Single phase 240V 50Hz / 3 phase 415V 50Hz
2. Guaranteed operating range
✻1 : ( ) Shows the total rating.
✻2 : < > Shows only the booster heater r ating.
Indoor Outdoor
Cooling Upper limit D.B.35°C, W.B.22.5°CD.B.46°C
Lower limi D.B.19°C, W.B.15°CD.B.-5°C
Heating Upper limit D.B.28°CD.B.24°C, W.B.18°C
Lower limi D.B.17°CD.B.-11°C, W.B.-12°C
OUTDOOR UNITREFRIGERANT PIPING INDOOR UNIT
Cooling: Indoor: D.B.27°C (80°F), W.B.19°C (66°F)
Outdoor: D.B.35°C (95°F), W.B.24°C (75°F)
Heating: Indoor: D.B.20°C (68°F)
Outdoor: D.B.7°C (45°F), W.B.6°C (43°F)
Refrigerant piping length (one way): 5m (16ft)

8
Rating Conditions (ISO T1)
Service Ref. With Electric heater
Item Without Electric heater
Function
Capacity ✻1Btu/h
W
Total input ✻1kW
Service Ref. With Electric heater
Without Electric heater
Power supply
Input ✻2kW
Running current ✻2A
Starting current ✻2A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min (CFM)
External static pressure Pa (mmAq)
Booster heater ✻2kW
Operation control & Thermostat
Noise level (Lo-Hi) dB
Unit drain pipe O.D mm (in.)
Dimensions
W mm (in.)
D mm (in.)
H mm (in.)
Weight With Electric heater kg (lbs)
Without Electric heater kg (lbs)
Service Ref.
Power supply
Input kW
Running current A
Starting current A
External finish
Refrigerant control
Compressor
Model
Motor output kW
Starter type
Protection devices
Crankcase heater W
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow m3/min (CFM)
Defrost method
Noise level Cooling dB
Heating dB
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
Weight kg (lbs)
Refrigerant
Charge kg (lbs)
Oil (Model) L
Pipe size O.D Liquid mm (in.)
Gas mm (in.)
Connection method Indoor side
Outdoor side
Between the indoor &
outdoor unit Height difference
Piping length
Notes 1. Rating Conditions (ISO T1)
3. Above data based on indicated voltage
Indoor Unit: Single phase 240V 50Hz
Outdoor Unit: Single phase 240V 50Hz / 3 phase 415V 50Hz
2. Guaranteed operating range
✻1 : ( ) Shows the total rating.
✻2 : < > Shows only the booster heater r ating.
Indoor Outdoor
Cooling Upper limit D.B.35°C, W.B.22.5°CD.B.46°C
Lower limi D.B.19°C, W.B.15°CD.B.-5°C
Heating Upper limit D.B.28°CD.B.24°C, W.B.18°C
Lower limi D.B.17°CD.B.-11°C, W.B.-12°C
OUTDOOR UNITREFRIGERANT PIPING INDOOR UNIT
Cooling: Indoor: D.B.27°C (80°F), W.B.19°C (66°F)
Outdoor: D.B.35°C (95°F), W.B.24°C (75°F)
Heating: Indoor: D.B.20°C (68°F)
Outdoor: D.B.7°C (45°F), W.B.6°C (43°F)
Refrigerant piping length (one way): 5m (16ft)
PEHD-P2.5EAH
PEAD-P2.5EA
Cooling Heating
22,800 24,500 (29,700)
6,700 7,200 (8,700)
2.68 2.45 (3.95)
PEHD-P2.5EAH
PEAD-P2.5EA
Single phase,50Hz,220-240V
0.17 0.17<1.67>
0.72 0.72<6.96>
––
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
0.116 (at 70 Pa)
17-21<600-741>
30/70
<1.5>
Built in remote controller
37-41
32 (1-1/4)
1,175 (46-1/8)
700 (27-5/8)
295 (11-5/8)
44 (97)
42 (92)
PUH-P2.5VGA/YGA
Single phase,50Hz,220-240V / 3 phase,50Hz,380-415V (4 wires)
2.51 2.28
11.27/4.11 10.32/4.03
77/32
Munsell 5Y 8/1
Linear Expansion Valve
Hermetic
NE41VMJM/NE41YEJM
1.9
Line start
VGA…Inner thermostat, HP switch, Discharge thermo.
YGA…Thermal relay, Discharge thermo, HP switch, Anti-phase protector.
38
Plate fin coil
Propeller (direct) ×1
0.070
50 (1,770)
Reverse cycle
48
50
900 (35-7/16)
330+20 (13+3/4)
855 (33-5/8)
82 (181)
R407C
3.3 (7.3)
1.2 (Ester) MEL56
9.52 (3/8)
15.88 (5/8)
Flared
Flared
Max.50m
Max.50m

9
Rating Conditions (ISO T1)
Service Ref. With Electric heater
Item Without Electric heater
Function
Capacity ✻1Btu/h
W
Total input ✻1kW
Service Ref. With Electric heater
Without Electric heater
Power supply
Input ✻2kW
Running current ✻2A
Starting current ✻2A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min (CFM)
External static pressure Pa (mmAq)
Booster heater ✻2kW
Operation control & Thermostat
Noise level (Lo-Hi) dB
Unit drain pipe O.D mm (in.)
Dimensions
W mm (in.)
D mm (in.)
H mm (in.)
Weight With Electric heater kg (lbs)
Without Electric heater kg (lbs)
Service Ref.
Power supply
Input kW
Running current A
Starting current A
External finish
Refrigerant control
Compressor
Model
Motor output kW
Starter type
Protection devices
Crankcase heater W
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow m3/min (CFM)
Defrost method
Noise level Cooling dB
Heating dB
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
Weight kg (lbs)
Refrigerant
Charge kg (lbs)
Oil (Model) L
Pipe size O.D Liquid mm (in.)
Gas mm (in.)
Connection method Indoor side
Outdoor side
Between the indoor &
outdoor unit Height difference
Piping length
Notes 1. Rating Conditions (ISO T1)
3. Above data based on indicated voltage
Indoor Unit: Single phase 240V 50Hz
Outdoor Unit: Single phase 240V 50Hz / 3 phase 415V 50Hz
2. Guaranteed operating range
✻1 : ( ) Shows the total rating.
✻2 : < > Shows only the booster heater r ating.
Indoor Outdoor
Cooling Upper limit D.B.35°C, W.B.22.5°CD.B.46°C
Lower limi D.B.19°C, W.B.15°CD.B.-5°C
Heating Upper limit D.B.28°CD.B.24°C, W.B.18°C
Lower limi D.B.17°CD.B.-11°C, W.B.-12°C
OUTDOOR UNITREFRIGERANT PIPING INDOOR UNIT
PEHD-P3EAH PEHD-P4EAH
PEAD-P3EA PEAD-P4EA
Cooling Heating Cooling Heating
26,300 31,000 (38,200) 33,100 35,500 (43,700)
7,700 9,100 (11,200) 9,700 10,400 (12,800)
3.41 3.24 (5.34) 3.90 4.07 (6.47)
PEHD-P3EAH PEHD-P4EAH
PEAD-P3EA PEAD-P4EA
Single phase,50Hz,220-240V
0.40 0.40 <2.50> 0.62 0.62 <3.02>
1.70 1.70 <10.41> 2.64 2.64 <12.58>
–– ––
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
0.15 0.27
20-25 <706-883> 27-34 <953-1,200>
70 (130)
<2.1> <2.4>
Built in remote controller
37-41 41-46
32 (1-1/4)
1,175 (46-1/8) 1,415 (55-11/16)
740 (29-1/8)
325 (12-13/16)
46 (101) 65 (143)
44 (97) 62 (136)
PUH-P3VGA/YGA PUH-P4YGA
Single phase,50Hz,220-240V / 3 phase,50Hz,380-415V (4 wires) 3 phase,50Hz,380-415V (4 wires)
3.01 2.84 3.28 3.45
13.73/5.46 13.12/5.76 5.49 5.79
93/41 45
Munsell 5Y 8/1
Linear Expansion Valve
Hermetic
NE52VNJM/NE52YDJM NE56YDJM
2.5 2.7
Line start
VGA…Inner thermostat, HP switch, Discharge thermo.
YGA…Thermal relay, Discharge thermo, HP switch, Anti-phase protector.
38
Plate fin coil
Propeller (direct) ×1 Propeller (direct) ×2
0.070 0.070+0.070
50 (1,770) 85 (3,000)
Reverse cycle
49 51
51 53
900 (35-7/16)
330+20 (13+3/4)
855 (33-5/8) 1,260 (49-5/8)
82 (181) 96 (212)
R407C
3.7 (8.2) 4.0 (8.8)
1.6 (Ester) MEL56
9.52 (3/8)
15.88 (5/8) 19.05 (3/4)
Flared
Flared
Max.50m
Max.50m
Cooling: Indoor: D.B.27°C (80°F), W.B.19°C (66°F)
Outdoor: D.B.35°C (95°F), W.B.24°C (75°F)
Heating: Indoor: D.B.20°C (68°F)
Outdoor: D.B.7°C (45°F), W.B.6°C (43°F)
Refrigerant piping length (one way): 5m (16ft)