Wiring Diagram - Mitsubishi Electric Mr.SLIM PCA-A24GA Service Manual

WIRING DIAGRAM

8
PCA-A24GA PCA-A30GA
PCA-A24GA PCA-A30GA
1
[LEGEND]
SYMBOL NAME
P.B
INDOOR POWER BOARD
I.B
INDOOR CONTROLLER BOARD
FUSE FUSE (6.3A/250V)
ZNR VARISTOR
CN2L CONNECTOR<LOSSNAY>
CN32 CONNECTOR<REMOTE SWITCH>
CN41 CONNECTOR<HA TERMINAL-A>
CN51 CONNECTOR<CENTRALLY CONTROL>
SW1 SWITCH <MODEL SELECTION>wSee Table 1.
SW2 SWITCH <CAPACITY CODE>wSee Table 2.
SWE SWITCH<EMERGENCY OPERATION>
X1 RELAY<DRAIN PUMP>
X4 RELAY<FAN MOTOR>
BCR FAN CONTROL ELEMENT
LED1 POWER SUPPLY<I.B>
LED2 POWER SUPPLY<R.B>
LED3 TRANSMISSION<INDOOR-OUTDOOR>
MF
1 2 3
C
I.B
D.U.M
1 3 5 1 3
FAN
CNP
( WHT )
(BLU)
X4
BCR X1
X4 X1
SW2 SW1
SWE
ON
OFF
Refer to tables 1 and 2
for service PCB.
Table 1
SW1
MODELS Service board
1 2 3 4 5
PCA-A,GA ON
OFF
NOTES:
1. Since the outdoor side electric wiring may change, be sure to check the outdoor unit
electric wiring for servicing.
2. Indoor and outdoor connecting wires have polarities, make sure to match terminal numbers (S1, S2, S3)
for correct wirings.
3. Symbols used in wiring diagram above are,
4. This diagram shows the wiring of Indoor and Outdoor connecting wires (specification of 230V),
adopting superimposed system of power and signal.
w1.Use copper supply wires.
[Emergency operation procedure]
When the wired remote control or the indoor unit microcomputer has failed, but all other
components work properly, if you set the switch (SWE) on the indoor control board ON, the indoor
unit will begin Emergency Operation.
When Emergency Operation is activated, indoor fan runs at high speed.
PCA-A36GA
PCA-A36GA
1
SYMBOL
C CAPACITOR<FAN MOTOR>
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
° °
<32 F/15kΩ, 77 F/5.2kΩ DETECT>
TH2 PIPE TEMP.THERMISTOR/LIQUID
° °
<32 F/15kΩ, 77 F/5.2kΩ DETECT>
TH5 COND./EVA.TEMP.THERMISTOR
° °
<32 F/15kΩ, 77 F/5.2kΩ DETECT>
R.B WIRED REMOTE CONTROLLER BOARD
P.B CNDK
CN2S
(RED) (WHT)
1 1
2 2
DC13.1V
3
POWER POWER
1 3 1 3 1 2
CNDK CND
(RED) (ORN) POWER
CN2D(WHT)
CN41
ZNR
CN51
LED3 LED2 LED1
D.SENSOR INTAKE LIQUID PIPE
CN31 CN20 CN21 CN29
( WHT ) ( RED ) ( WHT ) ( BLK )
1 2 3 1 2 1 2 1 2
1 2 1 2
TH2
TH1 TH5
Table 2
MODELS Service board
1 2 3 4 5
ON
PCA-A24GA
OFF
1 2 3 4 5
ON
PCA-A30GA
OFF
: Connector,
PCA-A42GA
PCA-A42GA
1
NAME SYMBOL
W.B
WIRELESS REMOTE CONTROLLER BOARD(OPTION)
RU RECEIVING UNIT
BZ BUZZER
LED1 LED<RUN INDICATOR >
LED2 LED<HOT ADJUST>
SW1
SWITCH<HEATING ON/OFF>
SW2 SWITCH<COOLING ON/OFF>
Please set the voltage using the remote
controller.
For the setting method, please refer to
the indoor unit Installation Manual.
VANE
1 3
CN6V
6 6
A-CONTROL
( GRN )
MV
CN3C(BLU)
CN2L
WIRELESS
CN90
9
( WHT )
CN32
REMOCON
CN22
( BLU )
RU
1 2
RECEIVER
2
TRANSMISSION WIRES DC12V
1
TB5
SW2
MODELS Service board
1 2 3 4 5
ON
PCA-A36GA
OFF
1 2 3 4 5
ON
PCA-A42GA
OFF
: Terminal (block).
12
1
NAME
TB4
YLW
w1
ORN S1
S2
YLW
TO OUTDOOR UNIT
S3
ORN
BRN
24/30 TYPE
6 6
MV
36/42 TYPE
5 5
MV
CNB
BZ
LED1 LED2 SW2 SW1
W.B
1 2
TB6
R.B