Wiring Diagram - Mitsubishi PLA-A12BA Technical Data Book

5

WIRING DIAGRAM

PLA-A12BA PLA-A18BA
[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)
DSA SURGE ABSORBER
FUSE FUSE (T6.3AL250V)
LED1 POWER SUPPLY (I.B)
LED2 POWER SUPPLY (R.B)
LED3 TRANSMISSION (INDOOR-OUTDOOR)
SWITCH (MODEL SELECTION) wSee table 1.
SW1
SWITCH (CAPACITY CODE) wSee table 2.
SW2
SWE CONNECTOR (EMERGENCY OPERATION)
X1 RELAY (DRAIN PUMP)
ZNR01,02 VARISTOR
DP DRAIN-UP MACHINE
FS DRAIN FLOAT SWITCH
I.B
VANE CNV(WHT)
20 18 16 14 12 10 8 6 4
19 17 15 13 11 9 7 5 3
WIRELESS
CN90
1 3
(WHT)
CN3G
1
(BLK)
9
CNB
BZ
5 5 5 5
LED2
SW1
M M M M
LED1
SW2
MV MV MV MV
RU
GRILLE W.B
<Table 1>SW1(MODEL SELECTION)
SW1
Service
1 2 3 4 5
ON
OFF
Notes: 1. SymboIs used in wiring diagram above are,
2. Indoor and outdoor connecting wires have poIarities, make sure to match terminal numbers (S1, S2, S3) for correct wiring.
3. Since the outdoor side electric wiring may change, be sure to check the outdoor unit electric wiring for servicing.
w1.Use copper supply wires.
[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.
30
PLA-A24BA
NAME
2 1
Refer to tables 1 and 2.
TB6
R.B
J41 J42
2 SW1 SW2
1
Pair No.
5
CN2L
2 1
LED3 LED2 LED1
I-SEE I-SEE
SENSOR SENSOR MOTOR
CNAC
CN4Y CN6Y
(WHT)
(WHT) (RED)
9 1 4 1 6 3 1
4 5
M
I-SEE
SENSOR
MT
I-SEE SENSOR
CORNER PANEL
(OPTIONAL PART)
<Table 2>SW2(CAPACITY CODE)
SW2
MODELS Service MODELS
1 2 3 4 5
PLA-A12BA PLA-A30BA
ON
OFF
1 2 3 4 5
PLA-A18BA ON PLA-A36BA
OFF
1 2 3 4 5
PLA-A24BA ON PLA-A42BA
OFF
PLA-A30BA
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
(32˚F/ 15kΩ, 77˚F / 5.4kΩ DETECT)
TH2 PIPE TEMP. THERMISTOR/LIQUID
(32˚F/ 15kΩ, 77˚F/ 5.4kΩ DETECT)
TH5
COND. / EVA. TEMP. THERMISTOR
(32˚F/ 15kΩ, 77˚F/ 5.4kΩ DETECT)
OPTION PART
W.B PCB FOR WIRELESS REMOTE CONTROLLER
BZ BUZZER
LED1
LED (OPERATION INDICATION : GREEN)
LED2 LED (PREPARATION FOR HEATING : ORANGE)
RU RECEIVING UNIT
SW1 EMERGENCY OPERATION (HEAT / DOWN)
SW2 EMERGENCY OPERATION (COOL / UP)
TB5
2
1
TRANSMISSION
WIRES
DC12V
CN32
(WHT)
1 3
1 3
CN51(WHT) CN24(YLW)
INDOOR/OUTDOOR
COMMUNICATION
1 2 1
CN3C
CN41(WHT)
(BLU)
1 2
REMOCON
4 1
CN22
SWE
(BLU)
ON OFF
FLOAT SW LIQUID/PIPE INTAKE
CN30
CN4F CN44 CN20
(GRN)
(WHT) (WHT) (RED)
1 4 1 4 1 2 1 3
t˚ t˚ t˚
TH2 TH5 TH1
FS
wBe sure to turn off the power source
and then disconnect fan motor connector.
(Failure to do so will cause trouble in fan motor.)
Service
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF
: Connector, : Terminal block.
PLA-A36BA PLA-A42BA
NAME
1 3 5
OUTDOOR
CN01
(BLK)
DSA
FUSE
U
ZNR02
DC280V U
ZNR01
RECTIFICATION
YLW
ORN
X1
FAN
CNMF
(WHT
)
D.U.M
7 4 1 3 1
CNP
(BLU)
M
MS
1~
3~
DP
MF
w1
TB4
YLW
S1
TO
ORN
S2 OUTDOOR
UNIT
S3
ORN
BRN