Wiring Diagram - Mitsubishi Electric PCA-A24KA4 Service Manual

7

WIRING DIAGRAM

PCA-A24KA4 PCA-A30KA4
[LEGEND]
SYMBOL
I.B INDOOR CONTROLLER BOARD
CN2L CONNECTOR (LOSSNAY)
CN24 CONNECTOR (BACK-UP HEATING)
CN30 CONNECTOR (LLC)
CN32
CONNECTOR (REMOTE SWITCH)
CN41 CONNECTOR (HA TERMINAL-A)
CN51 CONNECTOR (CENTRALLY CONTROL)
CN105 CONNECTOR (RADIO FREQUENCY INTERFACE)
FUSE FUSE (T6.3AL250V)
LED1 POWER SUPPLY (I.B)
LED2 POWER SUPPLY (R.B)
LED3 TRANSMISSION (INDOOR-OUTDOOR)
SW1
SWITCH (MODEL SELECTION) See table 1
SW2
SWITCH (CAPACITY CODE) See table 2
SWE CONNECTOR (EMERGENCY OPERATION)
X1
RELAY (DRAIN PUMP)
MF FAN MOTOR
MV VANE MOTOR
RFI RADIO FREQUENCY INTERFACE FOR RF THERMOSTAT
<Table 2> SW2 (CAPACITY CODE)
SW2
MODELS Service MODELS
1 2 3 4 5
PCA-A24KA4 PCA-A36KA4
ON
OFF
1 2 3 4 5
PCA-A30KA4 PCA-A42KA4
ON
OFF
■
The black square ( ) indicates a switch position.
I.B
VANE CNV (WHT)
20 18 16 14 12 10 8 6 4
19 17 15 13 11 9 7 5 3
I-SEE
SENSOR SENSOR MOTOR
WIRELESS
CN4Y
CN90
(WHT)
(WHT)
1 9 1 4 1
5
4
9
M
CNB
5 I-SEE
BZ
SENSOR
MT
I-SEE SENSOR
M SW1 LED2
(OPTIONAL PARTS)
SW2 LED1
MV
RU
W.B
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.
1 : Use copper supply wire.
PCA-A36KA4
NAME SYMBOL
TB4
TB5,TB6
TH1
TH2
TH5
OPTIONAL PARTS
W.B
BZ
LED1
LED2
RU
SW1
SW2
DP
FS
R.B
TB6
Service
1 2 3 4 5
Refer to tables 1 and 2
ON
OFF
1 2 3 4 5
ON
OFF
2 1
TB6
R.B
J41 J42
2 SW1 SW2
1
Pair No. CN51 (WHT)
5
CN2L
2 1
LED3 LED2 LED1
(RED)
ON OFF
I-SEE
FLOAT SW
CN6Y CN105
CN4F
(RED) (RED)
(WHT)
6 1 5 1 4
5
When attaching
When attaching
drain pump
drain pump
RFI
(optional parts),
(optional parts)
remove the
jumper
connector FLOAT SW
CN4F
CN4F and fit
( WHT
the drain float
switch (FS).
PCA-A42KA4
NAME
TERMINAL BLOCK (INDOOR/OUTDOOR CONNECTING LINE)
TERMINAL BLOCK (REMOTE CONTROLLER
TRANSMISSION LINE)
ROOM TEMP. THERMISTOR
(32°F / 15kΩ, 77°F / 5.4kΩ DETECT)
PIPE TEMP. THERMISTOR/LIQUID
(32°F / 15kΩ, 77°F / 5.4kΩ DETECT)
COND. / EVA. TEMP. THERMISTOR
(32°F / 15kΩ, 77°F / 5.4kΩ DETECT)
PCB FOR IR WIRELESS REMOTE CONTROLLER
BUZZER
LED (OPERATION INDICATION : GREEN)
LED (PREPARATION FOR HEATING : ORANGE)
RECEIVING UNIT
EMERGENCY OPERATION (HEAT / DOWN)
EMERGENCY OPERATION (COOL / UP)
DRAIN PUMP
DRAIN FLOAT SWITCH
WIRED REMOTE CONTROLLER BOARD
TERMINAL BLOCK (REMOTE CONTROLLER
TRANSMISSION LINE)
<Table 1> SW1 (MODEL SELECTION)
SW1
TB5
Service
2
1 2 3 4 5
1
TRANSMISSION
WIRES 2
DC12V
CN32
(WHT)
1 3
1 3
CN24
INDOOR/OUTDOOR
( )
YLW
COMMUNICATION
CN3C
1 2 1
( )
BLU
CN41 (WHT)
1 2
REMOCON
4 1
CN22
SWE
( )
BLU
LIQUID/PIPE INTAKE
CN44 CN20 CN30
( )
(WHT) (RED) GRN
1 4 1 2 1 3
° ° °
t t t
TH2 TH5 TH1
Be sure to turn off the source power
1 4
and then disconnect fan motor connector.
(Failure to do so will cause trouble in Fan motor)
)
FS
: Connector, :Terminal block.
12
ON
OFF
YLW
ORN
1 3 5
OUTDOOR
CN01
ORN
( BLK )
BRN
DC294~325V
RECTIFICATION
FUSE
X1
FAN
CNMF
(WHT)
D.U.M
3 1
7 4 1
CNP
(BLU)
M
MS
3~ 1~
DP
MF
(OPTIONAL PARTS)
1
TB4
YLW
S1
TO OUTDOOR
ORN
S2
UNIT
S3