How it Works
Mitsubishi
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OC325A
Service Manual
56 pgs9.53 Mb0

Mitsubishi OC325A Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
OUTDOOR UNIT PUH-2.5VKA.TH PUH-2.5VKA
1.TH
PUH-3VKA.TH PUH-3VKA
1.TH
PUH-3YKA.TH PUH-3YKA
1.TH
TECHNICAL & SERVICE MANUAL
Outdoor unit [model names] [Service Ref.]
August 2006
No.OC325
REVISED EDITION-A
PUH-1.6VKA
PUH-1.6VKA.TH PUH-1.6VKA
PUH-2.5VKA
PUH-2VKA.TH PUH-2VKA
1
PUH-2.5VKA.TH PUH-2.5VKA
PUH-4YKSA
PUH-5YKSA PUH-5YKSA
PUH-3VKA.TH PUH-3VKA
1
PUH-3YKA.TH PUH-3YKA
1
PUH-4YKSA.TH
PUH-5YKSA
PUH-6YKSA PUH-6YKSA
PUH-6YKSA
1
.TH
.TH
1
.TH .TH .TH
.
TH
1
.
TH
.
TH
1
.
TH
Revision:
• PUH-1.6/2/2.5/3VKA1.TH
and PUH-3YKA1.TH, PUH-5/6YKSA1.TH are added in REVISED EDITION-A.
• RoHS PARTS LIST has been added.
• Some descriptions have been modified.
• Please void OC325.
Note:
• This manual does not cover indoor units.
• RoHS compliant products have <G> mark on the spec name
plate.
• For servicing of RoHS compliant products, refer to the RoHS
PARTS LIST.
Model name indication
CONTENTS
1. TECHNICAL CHANGES ·································2
2.
COMBINATION OF INDOOR AND OUTDOOR UNITS
3. PART NAMES AND FUNCTIONS··················3
4. DATA ·······························································4
5. OUTLINES AND DIMENSIONS ······················5
6. WIRING DIAGRAM·········································9
7.
REFRIGERANT SYSTEM DIAGRAM
8. TROUBLE SHOOTING·································15
9. DISASSEMBLY PROCEDURE·····················24
10. PARTS LIST··················································26
11. RoHS PARTS LIST ·······································42
12. OPTIONAL PARTS ·······································54
··············14
···2
1 TECHNICAL CHANGES
Indoor unit Outdoor unit
Service
Manual No.
OC096 OC123 OC161 OC135 OC153 OC229
OC130
OC214 OC160 OC387 OC360 OC375 OC400 OC383 OC388 OC392 OC406 OC403
OC168
REVISED EDITION-A
OC144
REVISED EDITION-B
PUH-1.6 PUH-2 PUH-2.5 PUH-3 PUH-4 PUH-5 PUH-6
Service Ref.
PLH- • GKH(S)B PLH- • KKHC PLH- • KLHC PCH- • GKH(S)A
1
PEH- • EKH(S)A2.TH PKH- • GKL(H) PKH- • FKHA
3
PKH- • FKH(S)A2
PSH- • GJ(H)(S)1
PSH- • GKH(S)
PLH- • AK(H)(S) PLH- • GLH(S)B PLH- • KAK(H) PLH- • AAK(H) PCH- • GAK(H) PEH- • EAKH PKH- • GAKL(H) PKH- • FAK(H) PSH- • GAK(H) PLH- • KAK(H) .UK PLH- • AAK(H) .UK
—
—
—
—
— —
—
—
—
—
VKA.TH
—
— —
—
—
— —
— — —
— —
—
VKA.TH
—
—
—
—
— —
—
—
— —
—
VKA.TH VKA.TH
— —
—
—
—
—
— —
—
—
—
—
YKA.TH
YKSA
.TH
— —
—
—
—
—
—
— —
—
—
—
— —
—
YKSA
.TH
— —
— —
—
—
—
— — —
—
YKSA
.TH
VKA
1.THVKA1.TH VKA1.TH VKA1.TH YKA1.TH
YKSA
1.TH
YKSA1
.TH
PUH-1.6VKA.TH ➔ PUH-1.6VKA1.TH PUH-2VKA.TH ➔ PUH-2VKA
1
.TH
PUH-2.5VKA.TH ➔ PUH-2.5VKA1.TH PUH-3VKA.TH ➔ PUH-3VKA1.TH PUH-3YKA.TH ➔ PUH-3YKA
• 4-WAY VALVE and COIL (21S4) have been changed.
1
.TH
PUH-5YKSA.TH ➔ PUH-5YKSA1.TH PUH-6YKSA.TH ➔ PUH-6YKSA1.TH
• 4-WAY VALVE and COIL (21S4) have been changed.
• BYPASS VALVE and COIL (21R) have been changed.
2 COMBINATION OF INDOOR AND OUTDOOR UNITS
2
3 PART NAMES AND FUNCTIONS
PUH-1.6VKA.TH PUH-1.6VKA
1.TH
PUH-2VKA.TH PUH-2VKA
1.TH
Air intake
Air outlet (Expels warm air during cooling)
PUH-4YKSA.TH
Air intake
Air outlet
PUH-5YKSA.TH PUH-5YKSA
1.TH
PUH-6YKSA.TH PUH-6YKSA
1.TH
Air intake
Air outlet
PUH-2.5VKA.TH PUH-2.5VKA
1.TH
PUH-3VKA.TH PUH-3VKA
1.TH
PUH-3YKA.TH PUH-3YKA
1.TH
Air intake
Air outlet
CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR MAXIMUM PIPING LENGTH AT SHIPMENT.
The unique refrigerant circuit and a large accumulator always control the optimal refrigerant level regardless of the length (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.
3
4 DATA
Service Ref.
Refrigerant piping length (one way)
5m 10m 15m 20m 25m 30m 35m 40m 45m 50m
1.5
1.5
2.1
2.5
2.5
3.5
4.7
4.3
1.7
1.7
2.3
2.7
2.7
3.6
4.8
4.4
1.8
1.8
2.4
2.8
2.8
3.8
5.0
4.6
1.9
1.9
2.5
2.9
2.9
3.9
5.1
4.7
2.1
2.1
2.7
3.1
3.1
4.1
5.3
4.9
2.2
2.2
2.8
3.1
3.2
4.2
5.4
5.0
2.3
2.3
2.9
3.1
3.3
4.4
5.6
5.2
2.4
2.4
3.0
3.1
3.4
4.5
5.7
5.3
— —
3.1
3.1
3.6
4.6
5.9
5.5
— —
3.3
3.1
3.7
4.8
6.0
5.6
PUH-1.6VKA.TH PUH-2VKA.TH PUH-2.5VKA.TH PUH-3VKA.TH
PUH-4YKSA.TH PUH-5YKSA.TH
PUH-3YKA.TH
PUH-6YKSA.TH
PUH-1.6VKA
1.TH
1.TH
PUH-2.5VKA
1.TH
1.TH
PUH-5YKSA
1.TH
1.TH
PUH-6YKSA
1.TH
Winding
Resistance
(")
U-V
(R-C)
U-W
(S-C)
W-V
Compressor Model
Outdoor unit
PUH-1.6VKA.TH
PUH-2VKA.TH
PUH-2.5VKA.TH
PUH-3VKA.TH PUH-3YKA.TH
PUH-4YKSA.TH
PUH-1.6VKA
1.TH
PUH-2VKA
1.TH
PUH-2.5VKA1.TH
PUH-3VKA1.TH PUH-3YKA1.TH
RH247VFCT
2.00
4.55 —
NH41VMDT
1.01
2.25 —
NH38VMDT
1.30
2.70 —
NH52VNHT
0.65
1.57 —
NH52YDAT
3.70
3.70
3.70
at 20°C
Winding
Resistance
(")
Compressor Model
Outdoor unit
PUH-5YKSA.TH PUH-6YKSA.TH PUH-5YKSA1.TH PUH-6YKSA1.TH
ZR68KC-TFD
2.31
2.31
2.31
ZR61KC-TFD
2.53-2.91
2.53-2.91
2.53-2.91
at 25°C
NH56YDAT
3.50
3.50
3.50
T1-T2 T2-T3 T3-T1
4-1. REFILLING REFRIGERANT CHARGE (R-22 : kg)
4-2. COMPRESSOR TECHNICAL DATA
4
5 OUTLINES AND DIMENSIONS
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
10
Note:Allow adequate
upper clearance
100
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 5/8F
Refrigerant-pipe flared
connection
[9.52 3/8F
Knockout hole
for front piping
(refrigerant,drainage
and wiring)
Knockout hole
for right piping
(refrigerant,drainage
and wiring)
R20
R20
60
120
4553
25 max.
Knockout 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
2-12✕23 Oval holes
(standard bolt M10)
Handle for moving
PUH-1.6VKA.TH PUH-1.6VKA1.TH PUH-2VKA.TH PUH-2VKA1.TH
Unit : mm (inch)
5
PUH-2.5VKA.TH PUH-2.5VKA1.TH
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
10
Note:Allow adequate
upper clearance
100
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
Knockout hole
for front piping
(refrigerant,drainage
and wiring)
Knockout hole
for right piping
(refrigerant,drainage
and wiring)
R20
R20
60
120
4553
25 max.
Knockout 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
2-12✕23 Oval holes
(standard bolt M10)
Handle for moving
PUH-3VKA.TH PUH-3VKA PUH-3YKA.TH PUH-3YKA
1.TH
1.TH
Unit : mm (inch)
6
PUH-4YKSA.TH
300
Note:Allow adequate
upper clearance
10
100
500
Service space
500
4553
Unit : mm (inch)
Standard bolt length
Knockout holes for
power line 2-[27
120
60
R20
25 max.
80
65
Outdoor Unit-necessary surrounding clearance
Front opening
10
1715
185
(7-9/32)
Air intake
500(19-11/16)
185
(7-9/32)
10
Terminal block for
indoor and outdoor
unit connection
362(14-1/4)
330(13)
39.5 27.5
870(34-1/4)
Air outlet
Air intake
Terminal block for power line
302
Ground
Service panel
terminal
Handle
for moving
52461
585
Refrigerant-pipe flared
1258(49-1/2)
959
connection [19.05 3/4F
Refrigerant-pipe flared
connection [9.52 3/8F
403
382
83 524
345
Knockout hole
for front piping
(refrigerant,drainage
104
2-12✕23 Oval holes
40 60524
R20
Knockout hole
for right piping
(refrigerant,
drainage and wiring)
and wiring)
57 52
Bottom
39
(standard bolt M10)
piping hole
Drain hole
Front right piping holes-
17
R6
2-U-shaped
notched
holes
Drain hole
detail figures
12
The upper side must be open.
Outdoor Unit-Necessary surrounding clearance
(Concentrated installation)
300
1000For 10 units or less
150 10
Outlet guide
installation hole
7 24(1)295(11-5/8)
Handle for moving
Side air intake
Rear fresh
air intake
33
23
Rear piping hole
95
138
Handle
for moving
7
PUH-5YKSA.TH PUH-5YKSA1.TH
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
100
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
Knockout hole
for front piping
(refrigerant,drainage
and wiring)
Knockout hole
for right piping
(refrigerant,
drainage and wiring)
R20
R20
60
120
4553
25 max.
Knockout 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
2-12✕23 Oval holes
(standard bolt M10)
Front opening
PUH-6YKSA.TH PUH-6YKSA1.TH
Unit : mm (inch)
8
6 WIRING DIAGRAM
PUH-1.6VKA.TH PUH-2VKA.TH PUH-2.5VKA.TH PUH-3VKA.TH PUH-1.6VKA1.TH PUH-2VKA1.TH PUH-2.5VKA1.TH PUH-3VKA1.TH
(6.3A)
CIRCUIT BREAKER
C1
9
PUH-3YKA.TH PUH-3YKA1.TH
L1L2L3
Power line reconnection procedure in case of reverse rotation
Unit side wiring
Outdoor unit terminal
Field wiring
Change 2 out of
1,
2 and 3.
(This example shows reconnection of
1
and 2.)
123
Change this side
(6.3A)
CIRCUIT BREAKER
10
PUH-4YKSA.TH
L1L2L3
Power line reconnection procedure in case of reverse rotation
Unit side wiring
Outdoor unit terminal
Field wiring
Change 2 out of
1,
2 and 3.
(This example shows reconnection of
1
and 2.)
123
Change this side
(6.3A)
CIRCUIT BREAKER
11
PUH-5YKSA.TH PUH-5YKSA1.TH
L1L2L3
Power line reconnection procedure in case of reverse rotation
Unit side wiring
Outdoor unit terminal
Field wiring
Change 2 out of
1,
2 and 3.
(This example shows reconnection of
1
and 2.)
123
Change this side
(6.3A)
CIRCUIT BREAKER
12
PUH-6YKSA.TH PUH-6YKSA1.TH
L1L2L3
Power line reconnection procedure in case of reverse rotation
Unit side wiring
Outdoor unit terminal
Field wiring
Change 2 out of
1,
2 and 3.
(This example shows reconnection of
1
and 2.)
123
(6.3A)
CIRCUIT BREAKER
13
7 REFRIGERANT SYSTEM DIAGRAM
Outdoor unit
Flexible tube
Service port
Accumulator
Compressor
Refrigerant pipe (option)
19.05A({3/4") (with heat insulator)
Refrigerant pipe (option)
9.52A({3/8") (with heat insulator)
Ball valve (with service port)
Strainer
(#50)
Bypass valve
Restrictor valve
4-way valve
Oil separator
Service port
High pressure control switch
Outdoor heat exchanger
Thermistor (RT)
Capillary tube PUH-5
....
(O.D.4.0✕I.D.2.4-L840)✕2
PUH-6
....
(O.D.4.0✕I.D.2.4-L1200)✕2
Flared connection
THERMAL SWITCH
Capillary tube (O.D.2.5✕I.D.0.6-L1000)
Capillary tube (O.D.4.0✕I.D.3.0-L200)
Ball valve
(#50) Strainer
Outdoor unit
Flexible tube
Service port (check)
Accumulator
Compressor
Refrigerant pipe (option)
19.05A({3/4") (with heat insulator)
Refrigerant pipe (option)
9.52A({3/8") (with heat insulator)
Ball valve (with service port)
Strainer
(#50)
Bypass valve
Restrictor valve
4-way valve
Oil separator
Service port
High pressure control switch
Outdoor heat exchanger
Outdoor coil thermistor (RT)
Capillary tube (O.D.3.2✕I.D.2.0-L820)✕2
Flared connection
Capillary tube (O.D.2.5✕I.D.0.6-L1000)
Ball valve
(#50) Strainer
Outdoor unit
Flared connection
Flexible tube
Service port
Accumulator
Ball valve
(#50) Strainer
Compressor
Refrigerant pipe (option)
15.88A({5/8") (with heat insulator)
Refrigerant pipe (option)
9.52A({3/8") (with heat insulator)
Ball valve (with service port)
Strainer
(#50)
Bypass valve
Restrictor valve
4-way valve
Oil separator
Service port
High pressure control switch
Outdoor heat exchanger
Outdoor coil thermistor (RT)
Capillary tube
PUH-1.6···(O.D.3.2✕I.D.1.8-L600) PUH-2······(O.D.4.0✕I.D.2.0-L430) PUH-2.5···(O.D.4.0✕I.D.2.4-L1550) PUH-3······(O.D.4.0✕I.D.2.4-L1070)
Capillary tube (O.D.2.5✕I.D.0.6-L1000)
Capillary tube PUH-1.6 only (O.D.3.2✕I.D.1.2-L300)
Refrigerant flow in cooling Refrigerant flow in heating
PUH-1.6VKA.TH PUH-1.6VKA1.TH PUH-2VKA.TH PUH-2VKA PUH-2.5VKA.TH PUH-2.5VKA PUH-3VKA.TH PUH-3VKA PUH-3YKA.TH PUH-3YKA
1.TH
1.TH
1.TH
1.TH
PUH-4YKSA.TH
PUH-5YKSA.TH PUH-5YKSA1.TH PUH-6YKSA.TH PUH-6YKSA1.TH
14
8
TROUBLESHOOTING
8-1. TROUBLESHOOTING
The unit does not operate at all or it does not keep operating.
No display appears on the remote controller.
The error code is displayed on the remote controller.
“CENTRALLY-CONTROLLED” is displayed on the remote controller.
Is the remote operation available by the adapter for connecting the timer?
No
Does the remote controller for central control allow the unit to be operated or stopped with the local remote controller?
No
Is the address setting correct?
Yes
Is the setting of multi operation switch (SW6) correct?
Yes
Yes
No
No
······································· Refer to page 16
··························· Refer to page 17
The operation is normal.
Set the remote operation switch to the local remote controller side.
The operation is normal.
Set the centralized remote controller to allow the unit to be operated or stopped with the local remote controller.
Set the address again, turn the power supply off and turn it on again.
Yes
Replace the remote controller.
Check if the remote controller operates normally.
The unit operates, but there are the following problems.
The room cannot be cooled or heated sufficiently. ································· Refer to page 20
The room is cooled or heated excessively.
The operating sound or the vibration is big. The air from the unit smells strange.
Water leakage, dew dropping or splashing occurs.
The parts are removed or deformed.
Set the SW6 again, turn the power supply off and turn it on again.
············································ Refer to page 20
········································· Refer to page 20
······························· Refer to page 21
······················································· Refer to page 21
·········································································································· Refer to page 21
Others
15
No display appears on the remote controller.
No
Is the voltage of the indoor/outdoor unit connecting terminal block 240V?
Power supply system is abnormal.
No
Is the connector CN40 connected properly?
No
Is the transmission wire of remote controller connected properly?
Connection is defective.
Yes
The power supply wire and the indoor/outdoor unit connecting wire are in reverse connection.
Replace the remote controller.
Yes or Model without CN40
Yes
Install the CN40 in only one indoor unit.
Connection is defective.
Is the breaker for the indoor unit turned on?
Yes
No
Is the voltage of the indoor power supply terminal block 240V?
Yes
Yes
Is the voltage of the remote controller terminal block DC12V?
No
Yes
Does the LED1 (DC12V) on the indoor controller board light?
No
Does the LED2 (DC5V) on the indoor controller board light?
Yes
When the two or three indoor units are connected to an outdoor unit.
Yes
Is the connector CN40 installed in the two or more indoor units?
No or Model without CN40
Yes
Is the indoor/outdoor unit connecting wire short-circuited?
No
Yes
Is the transmission wire of remote controller short-circuited?
No
No
Is the breaker capacity appropriate?
Yes
Turn the breaker on and
operate the unit again.
Is the breaker turned off automatically?
No
Does the unit operate normally?
No
If any error code is displayed on the remote controller, follow the diagnosis of the displayed error code.
No
Is the 6.3A fuse on the indoor controller board melted?
No
CND, CNT, CN4T Are the wire and the connector connected properly?
Does the LED2 (DC5V) on the indoor controller board light?
Yes
No
Replace the breaker
Yes
Electric leakage or
overcurrent occurs.
Yes
Finished
Yes
Replace the fuse.
No
Connection is defective.
No
Normal
Turn off the power supply and turn it on again to operate the unit in COOL or HEAT mode.
No display appears on the remote controller.
Yes
Check the indoor controller board
16
The error code is displayed on the remote controller.
Communication error Sensor is abnormal Communication error
E0 is displayed.
Turn the breaker off and turn it on again. Is it possible to operate the unit?
No
Use the remote controller as it is. Use the remote controller as it is.
Yes
Is E0 displayed frequently?
Replace the remote controller.
Is E0 displayed again?
Yes
No
Yes
No
Finished
No
Does the unit operate normally?
Yes
Finished
P1, P2 or P4 error is displayed.
Is the connector of the abnormal sensor connected properly?
Yes
Connection is defective.
Check the resistance of the abnormal sensor. Is there a short or open circuit in the sensor?
No
Sensor is abnormal.
Replace the abnormal sensor.
No
Yes
P3 or E4 is displayed.
Turn the breaker off and turn it on again. Is it possible to operate the unit?
No
Yes
Is the transmission wire of remote controller connected properly?
Yes
Connection is defective.
Replace the remote controller.
Is P3 or E4
displayed again?
Yes
Yes
Is P3 or E4
displayed frequently?
No
Finished
No
No
Normal
Turn off the power supply and turn it on again to operate the unit in COOL or HEAT mode.
No
The error code is displayed on the remote controller.
Yes
Check the indoor controller board
Abnormality of drain pump
Freezing protection Overheating protection
System error
P5 is displayed.
P6 is displayed.
P7 is displayed.
No
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Does the unit operate normally?
Yes
Finished
17
P8 is displayed.
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