Mitsubishi Electric PEAD-RP1.6EA Operating manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
<indoor unit> Service ref.
Models PEAD-RP1.6EA
PEAD-RP2EA
PEAD-RP2.5EA
PEAD-RP3EA1
PEAD-RP4EA1
PEAD-RP5EA1
PEAD-RP6EA1
TM
1. COMBINATION OF INDOOR AND
OUTDOOR UNITS ···································· 2
2. SAFETY PRECAUTION ···························· 3
3. PART NAMES AND FUNCTIONS ············· 5
4. SPECIFICATION ······································· 8
5. DATA ························································ 15
6. REFRIGERANT SYSTEM DIAGRAM ······ 38
7. OUTLINES & DIMENSIONS ···················· 39
8. WIRING DIAGRAM ·································· 41
9. TROUBLE SHOOTING ···························· 42
10 . DISASSEMBLY INSTRUCTIONS ············ 51
11 . PARTS LIST ············································· 53
12 . OPTIONAL PARTS ·································· 59
CONTENTS
INDOOR UNIT
REMOTE CONTROLLER
ON/OFF
TEMP.
Series PEAD R407C/R410A
2004
•Refer to the OCT04 as for control
relation.This manual does not cover
outdoor units.
When servicing them, please refer
to the service manual
OC261 REVISED EDITION-B,
OC294 REVISED EDITION-A
and this manual as a set.

2
COMBINATION OF INDOOR AND OUTDOOR UNITS
1
Outdoor unit [OC294]
Heat pump type
PUHZ-RP
1.6VHA 2VHA 2.5VHA 4VHA3VHA 5VHA 6VHA
PEAD-RP1.6EA
PEAD-RP2EA
PEAD-RP2.5EA
PEAD-RP3EA 1
PEAD-RP4EA 1
PEAD-RP5EA 1
PEAD-RP6EA 1
Indoor unit
—
——— ——
—
—
———
—
—
—
————— ——————— ————— —————— —
————
(R410A Inverter)
Outdoor unit [OC261 REVISED EDITION-B]
Heat pump type Cooling only type
PUH-P
1.6
VGAA.UK
VGAA1.UK
YGAA.UK
YGAA1.UK
VGAA.UK
VGAA1.UK
YGAA.UK
YGAA1.UK
VGAA.UK
VGAA1.UK
YGAA.UK
YGAA1.UK
VGAA.UK
VGAA1.UK
YGAA.UK
YGAA1.UK
VGAA.UK
VGAA1.UK
YGAA.UK
YGAA1.UK
VGAA.UK
VGAA1.UK
YGAA.UK
YGAA1.UK
2 2.5 1.6 2 2.5
PU-P
PEAD-RP1.6EA
PEAD-RP2EA
PEAD-RP2.5EA
Indoor unit
———— —— ——
——
—— —————— ——————
(R407C Fixed speed)
Outdoor unit [OC261 REVISED EDITION-B]
Heat pump type
PUH-P
3
VGAA.UK
VGAA1.UK
YGAA.UK
YGAA1.UK
VGAA.UK
VGAA1.UK
YGAA.UK
YGAA1.UK
YGAA.UK
YGAA1.UK YGAA.UK
YGAA1.UK
456
PEAD-RP3EA 1
PEAD-RP4EA 1
PEAD-RP5EA 1
PEAD-RP6EA 1
Indoor unit
——
——
—— ————
—
—
—— —
—
—
—
Outdoor unit [OC261 REVISED EDITION-B]
Cooling only type
YGAA.UK
YGAA1.UK YGAA.UK
YGAA1.UK
VGAA.UK
VGAA1.UK
YGAA.UK
YGAA1.UK
VGAA.UK
VGAA1.UK
YGAA.UK
YGAA1.UK
3456
PU-P
PEAD-RP3EA 1
PEAD-RP4EA 1
PEAD-RP5EA 1
PEAD-RP6EA 1
Indoor unit
—— ——
——————— —
—— —— ——

3
SAFETY PRECAUTION
2
<Cautions for units utilizing refrigerant R410A>
CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
In case of using the existing pipes for R22, be careful with
the following.
áFor RP4 be sure to perform pipe replacement operation
before test run.
á Use flare nut as provided with this product.
Use a newl flared pipe.
áAvoid using thin pipes. For the detail, please refer to the
outdoor unit service manual No. OC294.
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.
If no reverse flow check valve is used, vacuum pump oil
ma flow back into refrigerant c cle and that can cause
deterioration of refrigerant oil etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessar to use R410A refrigerant.
Keep the tools with care.
If dirt, dust or moisture enter into refrigerant c cle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder without syphone
tube.
If a charging c linder is used without s phone tube, the
composition of refrigerant will change and the efficienc
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)
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contamination
such as sulfur which is hazardous for use,
oxides, dirt, shaving particles, etc.
In addition, use pipes with specified thickness.
Store the piping to be used during installation
indoors and keep 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.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change ma occur in refrigerant and the efficienc will be
lowered.
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil etc.
If dirt, dust or moisture enter into refrigerant c cle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enter, 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.
[1] Cautions for installing or relocation of unit
(1) Perform service after collecting the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the system with the specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.

4
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. 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 R134a, R407C or 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
[2] Additional refrigerant charge
When charging directly from cylinder
Ensure that the cylinder for R410A is syphon type.
Charging should be performed with the syphon cylinder type stood vertically.
(Refrigerant must be charged from liquid phase.)

5
PART NAMES AND FUNCTIONS
3
•Indoor Unit
Air intake (sucks the
air inside the room
into the unit)
In case of rear inlet
Air outlet
In case of bottom inlet
(Only 1.6~2.5HP)

6
•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 sensor
•Never expose the remote controller to direct sunlight. Doing so can result in the erroneous measurement of room
temperature.
•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

7
[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’s then start the operation.

8
Service Ref.
Item
Function
Capacity Btu/h
W
Total input kW
Service Ref.
Power supplyInput kW
Running current ❇3
❇1
❇1
❇3
❇3
❇3
A
Starting current A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min <CFM>
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Noise level (Lo-Hi) dB (A)
Unit drain pipe O.D mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
Service Ref.
Starting current
Running current
Input
A
A
kW
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 (A)
Heating dB (A)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
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
Po
Notes 1. Rating Conditions (ISO 13253 T1)
3. Above data based on indicated voltage
Indoor Unit: Single phase 230V 50Hz
Outdoor Unit: Single phase 230V 50Hz/3 phase 400V 50Hz
2. Guaranteed operating range Indoor Outdoor
Cooling Upper limit D.B.35°C, W.B.22.5°CD.B.46°C
Lower limit 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 limit D.B.17°CD.B.-11°C, W.B.-12°C
wer supply
REFRIGERANT PIPING
Weight
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)
OUTDOOR UNIT INDOOR UNIT
Weight
30Pa
70Pa
Single phase, 50Hz, 220-240V /
3 phase , 50Hz, 380-415V (4 wires)
1.59
7.36/2.49 36/20
Munsell 5Y 7/1
Linear Expansion Valve
Hermetic
RE277VHSMT/RE277YFKM
1.3
Line start
30
Plate fin coil
Propeller (direct) ×1
0.07
45 (1,590)
Reverse cycle
47
49
900 (35-7/16)
330+20 (13+1-3/4)
650 (25-5/8)
55 (121)
R407C
2.5 (5.5)
0.57 (Ester) MEL56
9.52 (3/8)
15.88 (5/8)
–
Plate fin coil
Propeller (direct) ×1
0.043
35 (1,240)
Reverse cycle
44
46
800 (31-1/2)
300+23 (11-13/16+7/8)
600 (23-5/8)
45 (99)
R410A
2.5 (5.5)
0.45 (NEO22)
6.35 (1/4)
12.7 (1/2)
Thermal relay
HP switch
Discharge thermo
Internal thermostat
HP switch
Discharge thermo
Flared
Flared
Max. 40m
Max. 40m Max. 30m Max. 50m
HP switch
Discharge thermo
13
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
SNB130FLBH
0.8
Line start
1.64
7.59/2.56 0.91 4.01 0.96 4.23
Single phase, 50Hz, 220-240V
Cooling
15,100
4,450
1.71
PU(H)-P1.6VGAA/PU(H)-P1.6YGAA
PU(H)-P1.6VGAA1/PU(H)-P1.6YGAA1PUHZ-RP1.6VHA
Heating
16,500
4,850
1.73
Single phase, 50Hz, 220-240V
0.13
0.55
0.8
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
0.043
11-14<388-494>
30/70
–
Built in remote controller
34-38
36-43
R1 (External thread)
935 (36-13/16)
700 (27-5/8)
295 (11-5/8)
33 (73)
PEAD-RP1.6EA
Cooling
12,200
3,600
1.12
Heating
13,900
4,100
1.26
PEAD-RP1.6EA
SPECIFICATION
4

9
Service Ref.
Item
Function
Capacity Btu/h
W
Total input kW
Service Ref.
Power supplyInput kW
Running current ❇3
❇1
❇1
❇3
❇3
❇3
A
Starting current A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min <CFM>
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Noise level (Lo-Hi) dB (A)
Unit drain pipe O.D mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
Service Ref.
Starting current
Running current
Input
A
A
kW
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 (A)
Heating dB (A)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
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
Po
Notes 1. Rating Conditions (ISO 13253 T1)
3. Above data based on indicated voltage
Indoor Unit: Single phase 230V 50Hz
Outdoor Unit: Single phase 230V 50Hz/3 phase 400V 50Hz
2. Guaranteed operating range Indoor Outdoor
Cooling Upper limit D.B.35°C, W.B.22.5°CD.B.46°C
Lower limit 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 limit D.B.17°CD.B.-11°C, W.B.-12°C
wer supply
REFRIGERANT PIPING
Weight
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)
OUTDOOR UNIT INDOOR UNIT
Weight
30Pa
70Pa
Single phase, 50Hz, 220-240V /
3 phase , 50Hz, 380-415V (4 wires)
2.29
10.26/3.70 62/31
Munsell 5Y 7/1
Linear Expansion Valve
Hermetic
NE36VMJMT/NE36YEKMT
1.6
Line start
38
Plate fin coil
Propeller (direct) ×1
0.07
55 (1,940)
Reverse cycle
48
49
900 (35-7/16)
330+20 (13+1-3/4)
855 (33-5/8)
71 (157)
R407C
2.6 (5.7)
1.2 (Ester) MEL56
9.52 (3/8)
15.88 (5/8)
–
Plate fin coil
Propeller (direct) ×1
0.043
35 (1,240)
Reverse cycle
44
46
800 (31-1/2)
300+23 (11-13/16+7/8)
600 (23-5/8)
45 (99)
R410A
2.5 (5.5)
0.45 (NEO22)
6.35 (1/4)
12.7 (1/2)
Thermal relay
HP switch
Discharge thermo
Internal thermostat
HP switch
Discharge thermo
Flared
Flared
Max. 40m
Max. 40m Max. 30m Max. 50m
HP switch
Discharge thermo
13
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
SNB130FLBH
1.1
Line start
2.36
10.57/3.82 1.39 6.16 1.46 6.47
Single phase, 50Hz, 220-240V
Cooling
19,100
5,600
2.53
PU(H)-P2VGAA/PU(H)-P2YGAA
PU(H)-P2VGAA1/PU(H)-P2YGAA1PUHZ-RP2VHA
Heating
21,400
6,300
2.20
Single phase, 50Hz, 220-240V
0.14
0.61
0.9
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
0.076
13.5-17<477-600>
30/70
–
Built in remote controller
36-40
38-44
R1 (External thread)
935 (36-13/16)
700 (27-5/8)
295 (11-5/8)
35 (77)
PEAD-RP2EA
Cooling
16,700
4,900
1.52
Heating
20,400
6,000
1.65
PEAD-RP2EA

10
Service Ref.
Item
Function
Capacity Btu/h
W
Total input kW
Service Ref.
Power supplyInput kW
Running current ❇3
❇1
❇1
❇3
❇3
❇3
A
Starting current A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min <CFM>
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Noise level (Lo-Hi) dB (A)
Unit drain pipe O.D mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
Service Ref.
Starting current
Running current
Input
A
A
kW
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 (A)
Heating dB (A)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
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
Po
Notes 1. Rating Conditions (ISO 13253 T1)
3. Above data based on indicated voltage
Indoor Unit: Single phase 230V 50Hz
Outdoor Unit: Single phase 230V 50Hz/3 phase 400V 50Hz
2. Guaranteed operating range Indoor Outdoor
Cooling Upper limit D.B.35°C, W.B.22.5°CD.B.46°C
Lower limit 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 limit D.B.17°CD.B.-11°C, W.B.-12°C
wer supply
REFRIGERANT PIPING
Weight
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)
OUTDOOR UNIT INDOOR UNIT
Weight
30Pa
70Pa
Single phase, 50Hz, 220-240V /
3 phase , 50Hz, 380-415V (4 wires)
2.77
11.90/4.48 77/35
Munsell 5Y 7/1
Linear Expansion Valve
Hermetic
NE41VMJMT/NE41YEKMT
1.9
Line start
38
Plate fin coil
Propeller (direct) ×1
0.07
50 (1,770)
Reverse cycle
48
50
900 (35-7/16)
330+20 (13+1-3/4)
855 (33-5/8)
82 (181)
R407C
3.1 (6.8)
1.2 (Ester) MEL56
–
Plate fin coil
Propeller (direct) ×1
0.06
55 (1,940)
Reverse cycle
47
48
950 (37-3/8)
330+30 (13+1-3/16)
943 (37-1/8)
75 (165)
R410A
3.5 (7.7)
0.87 (NEO22)
Thermal relay
HP switch
Discharge thermo
Internal thermostat
HP switch
Discharge thermo
Flared
Flared
9.52 (3/8)
15.88 (5/8)
Max. 50m
Max. 50m Max. 30m Max. 50m
HP switch
Discharge thermo
19
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
TNB220FMBH
1.6
Line start
2.68
11.51/4.34 1.49 6.61 1.69 7.50
Single phase, 50Hz, 220-240V
Cooling
22,500
6,600
2.65
PU(H)-P2.5VGAA/PU(H)-P2.5YGAA
PU(H)-P2.5VGAA1/PU(H)-P2.5YGAA1PUHZ-RP2.5VHA
Heating
24,300
7,150
2.36
Single phase, 50Hz, 220-240V
0.16
0.70
1.0
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
0.116
17-21<600-741>
30/70
–
Built in remote controller
37-41
39-46
R1 (External thread)
1,175 (46-1/8)
700 (27-5/8)
295 (11-5/8)
42 (92)
PEAD-RP2.5EA
Cooling
20,400
6,000
1.86
Heating
23,800
7,000
1.90
PEAD-RP2.5EA