Mitsubishi Electric Mr. SLIM PU-2NJA Operating manual

TECHNICAL & SERVICE MANUAL
CONTENTS
1. COMBINATION OF INDOOR AND OUTDOOR UNITS ···2
2. PART NAMES AND FUNCTIONS ··················2
3. DATA ·······························································3
4. OUTLINES AND DIMENSIONS······················5
5. WIRING DIAGRAM·········································9
6. REFRIGERANT SYSTEM DIAGRAM···········11
7. TROUBLESHOOTING ··································12
8. DISASSEMBLY PROCEDURE·····················16
9. PARTS LIST··················································18
10. OPTIONAL PARTS ·······································27
Outdoor unit
[Model names] [Service Ref.]
PU-2NJA PU-2NJA.TH
PU-2.5NJA PU-2.5NJA.TH
PU-3NJA PU-3NJA.TH
PU-4TJSA PU-4TJSA.TH
PU-5TJSA PU-5TJSA.TH
PU-5XJSA PU-5XJSA.TH
PU-6TJSA PU-6TJSA.TH
PU-6XJSA PU-6XJSA.TH
No.OC353
Outdoor unit
SPLIT-TYPE, AIR CONDITIONERS
Model name
indication
August 2005
OC353.qxq 05.8.9 9:27 AM Page 1

2
1COMBINATION OF INDOOR AND OUTDOOR UNITS
2PART NAMES AND FUNCTIONS
Indoor unit Outdoor unit
Model Service PU-2.TH PU-2.5.TH PU-3.TH PU-4.TH PU-5.TH PU-6.TH
Manual No. NJA NJA NJA TJSA TJSA XJSA TJSA XJSA
PL-AK(S)D
PL-AK(S)COC227 ——
PL-KJD OC233 ——————
PC-GJ(S)D OC215
PE-EJH(S)A OC131 —— ————
PE-EJ(S)A OC155 ——
PS-GJ(S)OC143 —— ————
PK-FL(S)D OC232 —————
PK-2GKLD OC228 ———————
wUnit of pressure is based on ISO (International Standardization Organization)
[kgf/cm2]➝[MPa] (1MPa=10.2kgf/cm2)
●Outdoor Unit
Air intake
Air outlet
(Expels warm air during cooling)
Air intake
Air outlet
Air intake
Air outlet
Air intake
Air outlet
PU-5XJSA.TH
PU-5TJSA.TH
PU-6XJSA.TH
PU-6TJSA.TH
PU-2NJA.TH
PU-4TJSA.TH
PU-2.5NJA.TH
PU-3NJA.TH
OC353.qxq 05.8.9 9:27 AM Page 2

3
3DATA
1. ELECTRICAL SPECIFICATIONS
(1) Rating conditions
2.POWER SUPPLY & MODEL NAMES
3.COMPRESSOR TECHNICAL DATA
●JIS B8616 Indoor 27:(80°F)D.B.,19:(66°F)W.B.
Outdoor 35:(115°F)D.B.,24:(75°F)W.B.
Power supply N:220V(1phase) 60Hz T:220V(3phase) 60Hz
Service Ref PU-2NJA.TH PU-2.5NJA.TH PU-3NJA.TH PU-4TJSA.TH PU-5TJSA.TH PU-6TJSA.TH
Current A 11.4 13.4 17.6 12.2 16.83 18.7
Input kW 2.45 2.91 3.44 4.27 5.63 6.15
Starting current A 54 58 80 69 135 140
Power supply X:380V(3phase) 60Hz
Service Ref PU-5XJSA.TH PU-6XJSA.TH
Current A 8.69 9.35
Input kW 5.12 5.71
Starting current A 64 70
●SSA 385,386 Indoor 29:(84°F)D.B.,19:(66°F)W.B
Outdoor 46:(115°F)D.B.,24:(75°F)W.B.
Power supply N:220V(1phase) 60Hz T:220V(3phase) 60Hz
Service Ref PU-2NJA.TH PU-2.5NJA.TH PU-3NJA.TH PU-4TJSA.TH PU-5TJSA.TH PU-6TJSA.TH
Current A 13.6 15.8 20.9 14.0 19.61 21.45
Input kW 2.97 3.44 4.09 4.97 6.68 7.28
Starting current A 54 58 80 69 135 140
Power supply Service Ref.(inddor unit)Model name (Outdoor unit)/Service Ref.
PU-2 PU-2.5 PU-3 PU-4 PU-5 PU-6
60Hz 1ph 220V PU-2NJA.TH PU-2.5NJA.TH PU-3NJA.TH — — —
3ph 220V — — — PU-4TJSA.TH PU-5TJSA.TH PU-6TJSA.TH
380/220V — — — — PU-5XJSA.TH PU-6XJSA.TH
Notes:1.Powert supply key N····1ph, 220V, 60Hz
T···· 3ph, 220V, 60Hz
X···· 3ph, 380/220V, 60Hz, 4 wires
Compressor Winding resistance(")at20:Outdoor unit
R-C/U-V S-C/V-W W-U Service Ref.
NHJ33NBDT 0.92 1.93 — PU-2NJA.TH
NHJ38NBDT 0.83 1.83 — PU-2.5NJA.TH
NHJ47NADT 0.55 1.24 — PU-3NJA.TH
NHJ56TKAT 0.87 0.87 0.87 PU-4TJSA.TH
Compressor Winding resistance(")at20:Outdoor unit
T1-T2 T2-T3 T3-T1 Service Ref.
ZR-61KC-TF5 0.628-0.722 0.628-0.722 0.628-0.722 PU-5TJSA.TH
ZR-61KC-TF7 2.23 2.23 2.23 PU-5XJSA.TH
ZR-68KC-TF5 0.517 0.517 0.517 PU-6TJSA.TH
ZR-68KC-TF7 1.92 1.92 1.92 PU-6XJSA.TH
OC353.qxq 05.8.9 9:27 AM Page 3

4
4. ADDITIONAL REFRIGERANT CHARGE (R-22……kg (lbs))
Outdoor unit
precharged (kg)
(up to 20m)
Service Ref. Refrigerant piping length (one way)
PU-2NJA.TH
PU-2.5NJA.TH
PU-3NJA.TH
PU-4TJSA.TH
1.9
2.4
3.5
4.6
20m (66ft) 25m (82ft) 30m (98ft) 35m (115ft) 40m (131ft)
0
0
0
0
0.06 (0.13)
0.06 (0.13)
0.06 (0.13)
0.15 (0.33)
––
––
––
0.45 (0.99) 0.6 (1.32)
45m (148ft)
–
–
–
–
50m (164ft)
–
–
–
–
0.12 (0.26)
0.12 (0.26)
0.12 (0.26)
0.30 (0.66)
PU-5XJSA.TH
5.1 0 0.15 (0.33) 0.45 (0.99) 0.6 (1.32) 0.75 (1.65) 0.9 (1.98)0.30 (0.66)
PU-5TJSA.TH
5.1 0 0.15 (0.33) 0.45 (0.99) 0.6 (1.32) 0.75 (1.65) 0.9 (1.98)0.30 (0.66)
PU-6XJSA.TH
5.7 0 0.15 (0.33) 0.45 (0.99) 0.6 (1.32) 0.75 (1.65) 0.9 (1.98)0.30 (0.66)
PU-6TJSA.TH
5.7 0 0.15 (0.33) 0.45 (0.99) 0.6 (1.32) 0.75 (1.65) 0.9 (1.98)0.30 (0.66)
OC353.qxq 05.8.9 9:27 AM Page 4

5
4OUTLINES AND DIMENSIONS
PU-2NJA.TH Unit : mm (inch)
100 10
1000For 10 units or less
200
Outdoor Unit-necessary surrounding clearance (Concentrated installation) The upper side must be open.
Outdoor Unit-necessary surrounding clearance
200
10
10
10Note:Allow adequate
upper clearance
150
500
500 Service space
Front opening
Handle for moving
138
95 Rear piping hole
23
33
Rear fresh air intake
Side air intake
7 24(1)295(11-5/8) Outlet guide
installation hole
302
Air intake
Air intake
Air outlet
870(34-1/4)
185
(7-9/32) 185
(7-9/32)
500(19-11/16)
330(13)
362(14-1/4) 1715 39.5 27.5
Terminal block for indoor and outdoor unit connection
Terminal block for power line
Handle for moving
77 524
339
282
297
444
650 (25-5/8)
40 60524
Service panel
(Ground terminal)
Refrigerant-pipe flared connection [15.88 3/8F Refrigerant-pipe flared connection [9.52 3/8F
Knock out hole for front piping (refrigerant,drainage and wiring)
Knock out hole for front piping (refrigerant,drainage and wiring)
R20
R20
60
120
4553
25 max.
Knock out holes for power line 2-[27
Standard bolt length
65
Front right piping holes- detail figures
80
17
42
45
12
R6
104 33
Bottom piping hole
2-U-shaped notched holes
Drain hole
Drain hole
2-12o23 Oval holes
(standard bolt M10)
Handle for moving
OC353.qxq 05.8.9 9:27 AM Page 5

6
PU-2.5NJA.TH
PU-3NJA.TH Unit : mm (inch)
100 10
1000For 10 units or less
200
Outdoor Unit-necessary surrounding clearance (Concentrated installation) The upper side must be open.
Outdoor Unit-necessary surrounding clearance
200
10
10
10Note:Allow adequate
upper clearance
150
500
500 Service space
Front opening
Handle for moving
138
95 Rear piping hole
23
33
Rear fresh air intake
Side air intake
7 24(1)295(11-5/8)
Outlet guide installation hole
302
Air intake
Air intake
Air outlet
870(34-1/4)
185
(7-9/32) 185
(7-9/32)
500(19-11/16)
330(13)
362(14-1/4) 1715 39.5 27.5
Terminal block for indoor and outdoor unit connection
Terminal block for power line
Handle for moving
179 524
441
337
352
403
553
850(33-7/16)
40 60524
Service panel
(Ground terminal)
Refrigerant-pipe flared connection [15.88 5/8F
Refrigerant-pipe flared connection [9.52 3/8F
Knock out hole for front piping (refrigerant,drainage and wiring)
Knock out hole for front piping (refrigerant,drainage and wiring)
R20
R20
60
120
4553
25 max.
Knock out holes for power line 2-[27
Standard bolt length
65
Front right piping holes- detail figures
80
17
42
45
12
R6
104 33
Bottom piping hole
2-U-shaped notched holes
Drain hole
Drain hole
2-12o23 Oval holes
(standard bolt M10)
Handle for moving
OC353.qxq 05.8.9 9:27 AM Page 6

7
150 10
1000For 10 units or less
300
Outdoor Unit-necessary surrounding clearance (Concentrated installation) Outdoor Unit-necessary surrounding clearance
The upper side must be open.
Handle for moving
138
95 Rear piping hole
23
33
Rear fresh air intake
Side air intake
7 24(1)295(11-5/8) Outlet guide
installation hole
302
Air intake
Air intake
Air outlet 870(34-1/4)
185
(7-9/32) 185
(7-9/32)
500(19-11/16)
330(13)
362(14-1/4) 1715 39.5 27.5
Terminal block for indoor and outdoor unit connection
Terminal block for power line
300
10
10
10 Note:Allow adequate
upper clearance
150
500
500 Service space
Handle for moving
52461
585
83 524
345
382
403
959
1258(49-1/2)
40 60524
Service panel
(Ground terminal)
Handle for moving
Refrigerant-pipe flared connection [19.05 3/4F
Refrigerant-pipe flared connection [9.52 3/8F
Knock out hole for front piping (refrigerant,drainage and wiring)
Knock out hole for front piping (refrigerant, drainage and wiring)
R20
R20
60
120
4553
25 max.
Knock out holes for power line 2-[27
Standard bolt length
65
Front right piping holes- detail figures
80
17
52
57
12
R6
104 39
Bottom piping hole
2-U-shaped notched holes
Drain hole
Drain hole
2-12o23 Oval holes
(standard bolt M10)
Front opening
Unit : mm (inch)
PU-4TJSA.TH
OC353.qxq 05.8.9 9:27 AM Page 7

8
PU-5TJSA.TH PU-6TJSA.TH
PU-5XJSA.TH PU-6XJSA.TH Unit : mm (inch)
150 10
1000For 10 units or less
300
Outdoor Unit-Necessary surrounding clearance (Concentrated installation) Outdoor Unit-Necessary surrounding clearance
The upper side must be open.
Handle for moving
138
95 Rear piping hole
23
33
Rear fresh air intake
Side air intake
7 24(1)345(13-9/16) Outlet guide
installation hole
352
Air intake
Air intake
Air outlet 970(38-3/16)
185
(7-9/32) 185
(7-9/32)
600(23-5/8)
380(14-31/32)
412(16-1/4) 1715 39.5 27.5
Terminal block for indoor and outdoor unit connection
Terminal block for power line
300
10
10
10 Note:Allow adequate
upper clearance
150
500
500 Service space
Handle for moving
52461
585
83 524
345
382
403
959
1258(49-1/2)
90 60524
Service panel
(Ground terminal)
Handle for moving
Refrigerant-pipe flared connection [19.05 3/4F Refrigerant-pipe flared connection [9.52 3/8F
Knock out hole for front piping (refrigerant,drainage and wiring)
Knock out hole for right piping (refrigerant, drainage and wiring)
R20
R20
60
120
4553
25 max.
Knock out holes for power line 2-[27
Standard bolt length
65
Front right piping holes- detail figures
80
17
52
57
12
R6
104 39
Bottom piping hole
2-U-shaped notched holes
Drain hole
Drain hole
2-12o23 Oval holes (standard bolt M10)
Front opening
OC353.qxq 05.8.9 9:27 AM Page 8

BLU
WHT
ORN
BLU
MC
MF3
WHT
ORN
REDRED
3
1
2
4
63H 63L
A1
A2
A
WHT
RED
TB3 1
12
2
BP1 P3 P3
X17
X6
X6
X17X14
X14
CP
P2
52C 52C
52
C
F3
(5A)
GRY
GRY
BLU
RED
ORN
YLW
WHT WHT
WHT
BLU
RED
49C
49F3
C3
C
BLU
RED
TB1
C
CP
C3
F3
MC
MF3
TB1
TB3
49C
49F3
52C
63H
63L
COMPRESSOR RUN CAPACITOR
COMPRESSOR PROTECTOR
FAN MOTOR CAPACITOR
FUSE(5A)
COMPRESSOR
FAN MOTOR
POWER SUPPLY TERMINAL BLOCK
INDOOR/OUTDOOR CONNECTING LINE TERMINAL BLOCK
COMPRESSOR INTERNAL THERMOSTAT
FAN MOTOR INTERNAL THERMOSTAT
COMPRESSOR CONTACTOR
HIGH PRESSURE SWITCH
LOW PRESSURE SWITCH
NOTES:1.THE DOTTED LINES SHOW FIELD WIRING.
2. TO INDOOR UNIT TERMINAL BLOCK.
POWER
SUPPLY
~/N
220V 60z
L
N
GRN/YLW
T1/2
BLUT3/6
L3/5
L1/1 52C
SC
R
PU-2NJA.TH PU-2.5NJA.TH
9
5WIRING DIAGRAM
WHT
BLU
RED
WHT
MC
MF3
BLU
RED
ORNORN
4
2
1
3
63H
52C
63L
A1
A2
A
WHT
RED
TB3 1
12
2
BP1 P3 P3
X17
X6
X6
X17X14
X14
CP
P2
52C 52C
52
C
F3
(5A)
GRY
GRY GRY
GRY
BLU
RED
ORN
YLW
WHT WHT
WHT
BLU
RED
49C
49F3
C3
C
BLU
WHT
TB1
POWER
SUPPLY
~/N
220V 60Hz
N
T1/2 BLU
T3/6
L3/5
L1/1 52C
SR
C
13 14
VLT VLT
22
21
52C
HC
GRN/YLW
L
C
CP
C3
F3
HC
MC
MF3
TB1
TB3
49C
49F3
52C
63H
COMPRESSOR RUN CAPACITOR
COMPRESSOR PROTECTOR
FAN MOTOR CAPACITOR
FUSE(5A)
CRANKCASE HEATER
COMPRESSOR
FAN MOTOR
POWER SUPPLY TERMINAL BLOCK
INDOOR/OUTDOOR CONNECTING LINE TERMINAL BLOCK
COMPRESSOR INTERNAL THERMOSTAT
FAN MOTOR INTERNAL THERMOSTAT
COMPRESSOR CONTACTOR
HIGH PRESSURE SWITCH
63L LOW PRESSURE SWITCH
NOTES:1.THE DOTTED LINES SHOW FIELD WIRING.
2. TO INDOOR UNIT TERMINAL BLOCK.
PU-3NJA.TH
WHT
BLU
BRN
YLW WHT
49F4
MF4
MF3
MC
BLU
RED
ORN
4
2
1
3
WHT
YLW
YLW
GRY
GRY C
HC
9695
47
51C
52C
13
32
31
14 63L
26C
63H
A1
A2
A
WHT
REDTB3 1
12
2
BP1 P3P3
X17
X6
X6
X17X14
X14
CP
P2 52C 52C
52C
52
C
F3
(5A)
WHT
WHT BRN VLT VLT GRY
GRY
RED
ORN YLW WHT
BLU
RED
ORN
WHT
BLU
BLU
C3
C4
RED
WHT
BLK
GRY RED WHT BLU
RED
TB1
TB1
26C
47
49F3,4
51C
52C
63H
63L
CP
C3,4
F3
HC
MC
MF3,4
POWER SUPPLY TERMINAL BLOCK
LINE TERMINAL BLOCK
TB3 INDOOR/OUTDOOR CONNECTING
THERMAL SWITCH
ANTI-PHASE PROTECTOR
FAN MOTOR INTERNAL THERMOSTAT
THERMAL RELAY
COMPRESSOR CONTACTOR
HIGH PRESSURE SWITCH
LOW PRESSURE SWITCH
COMPRESSOR PROTECTOR
FAN MOTOR CAPACITOR
FUSE(5A)
CRANKCASE HEATER
COMPRESSOR
FAN MOTOR
NOTES:1.THE DOTTED LINES SHOW FIELD WIRING.
2. TO INDOOR UNIT TERMINAL BLOCK.
POWER SUPPLY
3~
220V 60Hz
L1
L2
L3
GRN/
YLW
T3/6
T2/4
T1/2
L3/5
RST 47
L2/3
L1/1 51C
52C
WHT
49F3
BLU
RED
ORN
4
U
2
1
3
V
W
A
PU-4TJSA.TH
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10
PHASE PROTECTOR47
TERMINAL BLOCK
(CONNECTING WIRES INDOOR/OUTDOOR)
CP
TERMINAL BLOCK(POWER SUPPLY)
COMPRESSOR
FAN MOTOR
FUSE(5A)
FAN MOTOR CAPACITOR
COMPRESSOR PROTECTOR
THERMAL RELAY51C LOW PRESSURE SWITCH63L
INTERNAL THERMOSTAT FOR MC49C
2.* TO INDOOR UNIT TERMINAL BLOCK.
NOTES: 1.THE DOTTED LINES SHOW FIELD WIRING.
HIGH PRESSURE SWITCH
COMPRESSOR CONTACTOR
INTERNAL THERMOSTAT FOR MF3,4
THERMAL SWITCH
63H
52C
49F3,4
26C
TB3
TB1
MF3,4
MC
F3
C3,4
96
95
TB1
51C
51C
T2/4
T1/2
T3/6
63H
BLK
CIRCUIT
BREAKER
WHT
49C
49C
49C
GRY
26C
GRN/YLW
3~ (3PHASE)
220V 60Hz
POWER SUPPLY
L1
L2
L3 BLK
WHT
RED
(5A)
F3
WHT RED
A1
A2
GRY
A
C
1413 63L
47
52C
GRY
RED
WHT
GRY RED BLK
YLW
47
RTS
RED WHT BLK
L3/5
L2/3
L1/1
52C
C
52
BLU
T3
T2
T1
BLK
WHT
RED
MF4
49F4
WHT
ORN
RED
BLU
WHT
ORN
RED
BLU
MC
MF3
49F3
C4
C3
WHT
ORN
RED
BLU BLU
RED
ORN
WHT
3
1
2
4
3
1
2
4
CP
X17
X6
X14
52C P2P3P3 52C P1BA
WHT
RED
TB3
X6
2
1
*
*1
2X17X14
PU-5TJSA.TH PU-6TJSA.TH
PU-5XJSA.TH PU-6XJSA.TH
96
95
51C A
C
47
51C
T1/2
T2/4
T3/6
TB1
26C
63H
GRY
63L GRY
BLK
WHT
CIRCUIT
BREAKER
BLU
49C
49C
49C
GRN/YLW
N
POWER SUPPLY
3N~(3PHASE 4WIRES)
380V 60Hz
L1
L2
L3 BLK
WHT
RED
F3
(5A)
BLU
RED
A1
A2 14
1352C
GRY
RED
WHT
GRY
RED BLK
YLW
47
RTS
RED
WHT
BLK
L3/5
L2/3
L1/1 52C
52
C
T3
T2
T1
BLK
WHT
RED
MF4
49F4
WHT
ORN
RED
BLU
WHT
ORN
RED
BLU
MC
MF3
49F3
C4
C3 WHT
ORN
RED
BLU BLU
RED
ORN
WHT
3
1
2
4
3
1
2
4
CP
X17
X6
X14
P2P3P3
52C
52C
P1
BA
WHT
RED
TB3 X6
2
1
1
2
X17
X14
THERMAL RELAY51C LOW PRESSURE SWITCH63L
PHASE PROTECTOR47
INTERNAL THERMOSTAT FOR MC49C
NOTES: 1.THE DOTTED LINES SHOW FIELD WIRING.
2. TO INDOOR UNIT TERMINAL BLOCK.
TERMINAL BLOCK (CONNECTING WIRES INDOOR/OUTDOOR)
CP
TERMINAL BLOCK (POWER SUPPLY)
COMPRESSOR
FAN MOTOR
FUSE (5A)
FAN MOTOR CAPACITOR
HIGH PRESSURE SWITCH
COMPRESSOR CONTACTOR
INTERNAL THERMOSTAT FOR MF3,4
THERMAL SWITCH
COMPRESSOR PROTECTOR
63H
52C
49F3,4
26C
TB3
TB1
MF3,4
MC
F3
C3,4
OC353.qxq 05.8.9 9:27 AM Page 10