Mitsubishi PLA-A12BA Technical Data Book page 33

PCA-A24KA PCA-A30KA
[LEGEND]
SYMBOL NAME
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 LIFT UP MECHANISM)
ZNR01,02
VARISTOR
R.B WIRED REMOTE CONTROLLER BOARD
MF FAN MOTOR
MV VANE MOTOR
I.B
VANE CNV(WHT)
20 18 16 14 12 10 8 6 4 2
19 17 15 13 11 9 7 5 3 1
I-SEE
SENSOR
WIRELESS
CN4Y
CN90
(WHT)
(WHT)
1 9 1
4
9
I-SEE
CNB
SENSOR
BZ
5
I-SEE SENSOR
(OPTIONAL PARTS)
SW1 LED2
M
SW2
LED1
MV
RU
W.B
(OPTIONAL PARTS)
<Table 2>SW2(CAPACITY CODE)
SW2
MODELS Service MODELS
1 2 3 4 5
PCA-A24KA PCA-A36KA
ON
OFF
1 2 3 4 5
PCA-A30KA PCA-A42KA
ON
OFF
Notes: 1.SymboIs used in wiring diagram above are,
: Terminal block.
2. Indoor and outdoor connecting wires have poIarities, make sure
to match terminal numbers (S1, S2, S3) for correct wirings.
3.Since the outdoor side electric wiring may change, be sure to
check the outdoor unit electric wiring for servicing.
w 1: Use copper supply wire.
PCA-A36KA
SYMBOL
TB4
TB5,TB6
TH1
TH2
TH5
OPTIONAL PARTS
W.B
BZ
LED1
LED2
RU
SW1
SW2
DP
FS
Refer to tables 1 and 2
2 1
TB6
R.B
J41 J42
SW1 SW2
Pair No. CN51(WHT)
5
CN41(WHT)
CN2L
2 1
LED3 LED2 LED1
SWE
(RED)
ON OFF
I-SEE
SENSOR MOTOR
FLOAT SW
CN6Y
CN4F
(RED)
(WHT)
4 1 6 1 4
5
When attaching When attaching
M
drain lift up
drain lift up
MT mechanism
mechanism
(optional parts),
(optional parts)
remove the jumper
connector CN4F
FLOAT SW
CN4F
and fit the drain
(WHT)
float switch (FS).
Service
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF
: Connector,
PCA-A42KA
NAME
TERMINAL BLOCK (INDOOR/OUTDOOR CONNECTING LINE)
TERMINAL BLOCK (REMOTE CONTROLLER
TRANSMISSION LINE)
ROOM TEMP. THERMISTOR
(32ºF / 15kΩ, 77ºF/ 5. 4kΩ DETECT)
PIPE TEMP. THERMISTOR/LIQUID
(32ºF / 15kΩ, 77ºF/ 5. 4kΩ DETECT)
COND. / EVA. TEMP. THERMISTOR
(32ºF / 15kΩ, 77ºF/ 5. 4kΩ DETECT)
PCB FOR WIRELESS REMOTE CONTROLLER
BUZZER
LED (OPERATION INDICATION : GREEN)
LED (PREPARATION FOR HEATING : ORANGE)
RECEIVING UNIT
EMERGENCY OPERATION (HEAT / DOWN)
EMERGENCY OPERATION (COOL / UP)
DRAIN LIFT UP MECHANISM
DRAIN FLOAT SWITCH
<Table 1>SW1(MODEL SELECTION)
SW1
Service
TB5
2
1 2 3 4 5
1
TRANSMISSION
WIRES
DC12V
CN32
(WHT)
1 3
1 3
CN24
INDOOR/OUTDOOR
(YLW)
COMMUNICATION
CN3C
1 2 1
(BLU)
1 2
REMOCON
4 1
CN22
(BLU)
LIQUID/PIPE INTAKE
CN44 CN20 CN30
(WHT) (RED) (GRN)
1 3
1 4 1 2
t° t° t°
TH2 TH5 TH1
wBe 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
[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.
ON
OFF
OUTDOOR 1 3 5
CN01
(BLK)
DSA
U
ZNR02
FUSE
U
ZNR01
DC294~325V
RECTIFICATION
YLW
ORN
X1
FAN
CNMF
(WHT
)
D.U.M ORN
3 1
7 4 1
CNP
BRN
(BLU)
M
MS
1~
3~
DP
MF
(OPTIONAL PARTS)
w 1
TB4
YLW
S1
TO OUTDOOR
ORN
S2
UNIT
S3
33