Mitsubishi Electric PUMY-P112VKM1, Service Manual

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RS Rush Current Protect Resistor
GD1,GD3
N.F.
Connection Terminal<L1/L2/L3-Power Supply>
Noise Filter Circuit Board
LI1/LI2/LI3/NI
Connection Terminal<L1/L2/L3-Power Supply> LO1/LO2/LO3
SYMBOL NAME
TB1 Terminal Block <Power Supply>
TB1B Terminal Block <Branch Box>
TB3
TB7
FUSE1,FUSE2 Fuse <T20AL250V>
MC
Motor For Compressor
MF1,MF2 Fan Motor
LEV-A,LEV-B Electronic Expansion Valve
21S4 Solenoid Valve<Four-Way Valve>
SV1 Solenoid Valve<Bypass valve>
TH3 Thermistor<Outdoor Liquid Pipe>
TH2 Thermistor<Hic Pipe>
TH4 Thermistor<Compressor>
TH6 Thermistor<Suction Pipe>
TH7
TH8 Thermistor<Ambient>
Thermistor<Heat Sink>
63H High Pressure Switch
63HS High Pressure Sensor
63LS Low Pressure Sensor
ACL4 Reactor
DCL
P.B.
Power Circuit Board
Connection Terminal<U/V/W-Phase>
TB-U/V/W
MULTI.B.
Switch<Display Selection> SW1
Switch<Function Selection>
SW2
Switch<Test Run> SW3
Switch<Model Selection> SW4
Switch<Function Selection> SW5
Switch<Function Selection> SW6
Controller Circuit Board
Connection Terminal<L1/L2/L3-Power Supply> TB-L1/L2/L3
Connection Terminal TB-P1/P3
52C Relay
X52CA/B
Reactor
Terminal Block
<Centralized Control Transmission Line>
Terminal Block <Indoor/Outdoor, Branch
Box/Outdoor Transmission Line>
ConnectionTerminal<Electrical Parts Box>
Fuse<T6,3AL250V>
F1,F2
Switch<Function Selection> SW7
Switch<Model Selection> SW8
Switch<Function Selection> SW9
Switch<Unit Address Selection, unit digit> SWU1
Switch<Unit Address Selection, tens digit>
SWU2
LED<Operation Inspection Display>
LED1,LED2
LED<Power Supply to Main Microcomputer> LED3
Connector<Connection For Option> SS
Connector<Connection For Option> CN3D
Connector<Connection For Option> CN3S
Connector<Connection For Option> CN3N
Connector<Connection For Option> CN51
Relay X501~505
M-NET P.B. M-NET Power Circuit Board
TB1
CNS1
Connector<Centralized Control Transmission Line> CNS2
Connector<Indoor/Outdoor, Branch Box/
Outdoor Transmission Line>
ConnectionTerminal<Electrical Parts Box>
MODELS
PUMY-P112YKM1
PUMY-P125YKM1
PUMY-P140YKM1
SW4 SW8
1 MODEL SELECTION
The black square( )indicates a switch position.
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2
ACL4
CNCT
(RED)
CNAC2
(RED)
CNAC1
(WHT)
GD3
BLK
WHT
WHT
CNDC
(PNK)
CNL
(BLU)
1 3 1 3
1
3
2
1
3
1 2
+
-
+
BLK
BLU
WHT
RED
BLK
WHT
RED
LI1
POWER
SUPPLY
3N
400V 50Hz
LI2
LI3
NI
TB1
L1
L2
L3
N
GD1
BLK
LO1
LO2
LO3
GRN/YLW
RED
RED
YLW
YLW
P. B.
N. F.
BLK WHT
U
V
W
TB-U
TB-V
TB-W
RED
M1
M2
S
TB3
TO INDOOR UNIT
CONNECTING WIRES
DC 30V(Non-polar)
TO BRANCH BOX
FOR CENTRALIZED
CONTROL
DC 30V(Non-polar)
M1
M2
S
TB7
2
2
2 2 2
CN51
(WHT)
SW2 SW8 SW1
SW7 SW3 SW4
SWU2 SWU1
TRANS
LED1
CN2
(RED)
CN4
(WHT)
LED3
CN3D
(WHT)
CN3S
(RED) CN3N
(BLU)
CN1
(WHT)
TB1
BLK
CNDC
(PNK)
MF1
LEV-B
M
1 4 1
3
1
7
3
1 3 1 3 1 3
3 1
1
2
2 2 1 1 1 2
1
2
2
2 1 2 1
2
3 1 2 1
TH7 TH6 TH3 TH4
63HS
63H
CNF1
(WHT)
MF2
1
7
1
7
7
1
5
1 5
CNF2
(WHT)
TH7/6
(RED)
CNLVB
(RED)
TH3
(WHT)
TH4
(WHT)
1 2
CN5
(RED)
1 2
TH8
CN6
(WHT)
TH2
TH2
(BLK)
63HS
(WHT)
1 3 1 3
63LS
63LS
(BLU)
63H
(YLW)
MULTI. B.
LED2
M-NET P.B.
52C
(BLK)
3 1 3 1 3 1
X505
21S4
(GRN)
SV1
(GRY)
SV2
(BLU)
SS
(WHT)
21S4
SV1
CNAC
(RED)
CNS1
(RED) CNS2
(YLW)
F1
F2
X504 X503 X502
X501
CN102
(WHT)
CN2
(WHT)
4
4
1
1
CN40
(WHT)
4 1
5 3
1
CN41
(WHT)
4 1
4
2
CN2
(RED)
RED RED
RS
RED
BLK BLK
X52C
B
L3OUT TB-L3
TB-L1
TB-P3
TB-P1
TB-L2
L3IN
CN4
(WHT)
1 2
2
1
7
7
2
2
2
TB1B
B1
B2
FUSE1
-
-
+
+
+
+
is the switch position.
LEV-A
M
1 5
CNLVA
(WHT)
DCL
FUSE2
MC
SW6 SW5 SW9
X52C
A
WHT
+
+ +
+
1 2 3 4 5 6 7 8
[Example]
When the compressor and
SV1 are turned during cooling
operation.
Bit
Indication
1
Compressor
operated
2
52C
3
21S4
4
SV1
5
(SV2)
6 7 8
Always lit
2.During normal operation
The LED indicates the drive state of the controller in the outdoor unit.
3.When fault requiring inspection has occurred
The LED alternately indicates the inspection code and the location of the unit in which
the fault has occurred.
NOTES:
1.Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit.
Self-diagnosis function
The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch
(SW1) and LED1, LED2 (LED indication) found on the multi-controller of the outdoor unit.
LED indication : Set all contacts of SW1 to OFF.
Cautions when Servicing
!
• WARNING: When the main supply is turned off, the voltage [570 V] in the main capacitor will drop to 20 V in approx. 5
minutes (input voltage: 400 V). When servicing, make sure that LED1, LED2 on the outdoor circuit board goes out, and then
wait for at least 5 minute.
• Components other than the outdoor board may be faulty: Check and take corrective action, referring to the service manual.
Do not replace the outdoor board without checking.
PUMY-P112YKM1(-BS) PUMY-P125YKM1(-BS) PUMY-P140YKM1(-BS)
OCH576