Wiring Diagram - Mitsubishi Electric Mr.Slim PLY-P18BA.TH Service Manual

7

WIRING DIAGRAM

PLY-P18BA.TH
PLY-P36BA.TH
[LEGEND]
SYMBOL NAME
I.B INDOOR CONTROLLER BOARD
CN2L CONNECTOR (LOSSNAY)
CN32
CONNECTOR (REMOTE SWITCH)
CN41 CONNECTOR (HA TERMINAL-A)
CN51
CONNECTOR (CENTRALLY CONTROL)
FUSE FUSE (T6.3AL250V)
LED1
POWER SUPPLY (I.B)
LED2 POWER SUPPLY (R.B)
LED3
TRANSMISSION (INDOOR-OUTDOOR)
SW1
SWITCH (MODEL SELECTION)
SW2 SWITCH (CAPACITY CODE)
SWE CONNECTOR (EMERGENCY OPERATION)
X1 RELAY (DRAIN PUMP)
DP DRAIN PUMP
FS DRAIN FLOAT SWITCH
<Table 2> SW2 (CAPACITY CODE)
SW2
MODELS Manufacture/Service MODELS
1 2 3 4 5
PLY-P18BA PLY-P36BA
ON
OFF
1 2 3 4 5
PLY-P24BA PLY-P42BA
ON
OFF
1 2 3 4 5
PLY-P30BA PLY-P48BA
ON
OFF
The black square ( ) indicates a switch position.
I.B
VANE CNV(WHT)
20 18 16 14 12 10 8 6
19 17 15 13 11 9 7 5
3
1 3
WIRELESS
AUTO GRILLE CN90
(WHT)
CN3G 1
(BLK)
9
CNB
5 5 5 5
SW1
M M M M
SW2
MV MV MV MV
RU
GRILLE
Notes: 1. SymboIs used in wiring diagram above are,
2. Indoor and outdoor connecting wires are made with poIarities, make wiring matching terminal
numbers (S1, S2, S3).
3. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
4. This diagram shows the wiring of indoor and outdoor connecting wires (specification of 220 - 240V), adopting
superimposed system of power and signal.
[Self-diagnosis]
1.For details on how to operate self-diagnosis with the wireless
remote control,refer to the technical manuals etc.
2.For the wired remote control:When you quickly press twice the CHECK switch on the remote
control, the unit begins self-diagnosis, and Check Codes generated in the past appear on the
display.
For Check Codes and Symptoms refer to the table below.
OCH551A
PLY-P24BA.TH
PLY-P42BA.TH
SYMBOL
MF FAN MOTOR
MV VANE MOTOR
TB4
TERMINAL BLOCK (INDOOR/OUTDOOR CONNECTING LINE)
TB5,TB6 TERMINAL BLOCK (REMOTE CONTROLLER
TRANSMISSION LINE)
TH1 ROOM TEMP. THERMISTOR
(0°C/15kΩ, 25°C/5.4kΩ DETECT)
TH2 PIPE TEMP. THERMISTOR/LIQUID
(0°C/15kΩ, 25°C/5.4kΩ DETECT)
TH5 COND./EVA. TEMP. THERMISTOR
w See table 1
w See table 2 (0°C/15kΩ, 25°C/5.4kΩ DETECT)
OPTION PART
W.B PCB FOR WIRELESS REMOTE CONTROLLER
BZ BUZZER
LED1
LED (OPERATION INDICATION : GREEN)
RECEIVING UNIT
RU
SW1
EMERGENCY OPERATION (FAN/DOWN)
SW2 EMERGENCY OPERATION (COOL/UP)
Manufacture/Service
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF
Refer to tables 1 and 2
1 2 3 4 5
ON
OFF
2 1
TB6
R.B
J41 J42
SW1 SW2
4 2
3 1 Pair No.
CN2L
2 1
LED3 LED2 LED1
I-SEE I-SEE
SENSOR
SENSOR MOTOR
CN4Y CN6Y
(WHT) (RED)
9 1 4 1 6 1
4 5
3
M
I-SEE
BZ
SENSOR
MT
U.B
LED2
I-SEE SENSOR
3
CORNER PANEL
(OPTION PART)
LED1
CN3G
AUTOMATIC FILTER ELEVATION PANEL
(OPTION PART)
W.B
PLY-P30BA.TH
PLY-P48BA.TH
NAME
<Table 1> SW1 (MODEL SELECTION)
SW1
Manufacture/Service
1 2 3 4 5
TB5
2
1
The black square ( )
TRANSMISSION
indicates a switch position.
WIRES
DC12V
CN32
(WHT)
1 3
1 3
INDOOR/OUTDOOR
CN51(WHT)
COMMUNICATION
CN3C
5 1
(BLU)
CN41(WHT)
1 2
REMOCON
CN22
4 1
(BLU)
SWE
ON OFF
FLOAT SW LIQUID/PIPE INTAKE
CN4F CN44 CN20
CN105
(WHT) (WHT) (RED)
5
1 4 1 4 1 2 7
t° t° t°
FS TH2 TH5 TH1
1 5 3 1
CN3A
:Connector, :Terminal (block).
16
ON
OFF
OUTDOOR
CN01
1 3 5
(BLK)
FUSE
– +
AUTO
GRILLE
X1
POWER
FAN D.U.M
CNAC
CNMF
CNP
(WHT)
(WHT
) (BLU)
4 1 3 1 1 3
MS M
3~ 1~
DP
MF
w Be sure to turn off the source power and then
disconnect fan motor connector.
(Failure to do so will cause trouble in fan motor)
TB4
YLW YLW
S1
ORN ORN TO
S2
OUTDOOR
S3
UNIT
ORN
BRN