Wiring Diagram - Mitsubishi Electric PUZ-A NHA Series Service Manual

8

WIRING DIAGRAM

PLA-A12AA PLA-A18AA
PLA-A12AA PLA-A18AA
1
[LEGEND]
SYMBOL NAME
P.B
INDOOR POWER BOARD
I.B INDOOR CONTROLLER BOARD
BCR FAN CONTROL ELEMENT
CN2L CONNECTOR<LOSSNAY>
CN32 CONNECTOR<REMOTE SWITCH>
CN41 CONNECTOR<HA TERMINAL-A>
CN51 CONNECTOR<CENTRALLY CONTROL>
FUSE FUSE (6.3A/250V)
LED1 POWER SUPPLY<I.B>
LED2 POWER SUPPLY<R.B>
LED3 TRANSMISSION<INDOOR-OUTDOOR>
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>
ZNR VARISTOR
GRILLE
MV MV MV
5 5 5
5
MF
1 2 3 6 7 4 8 9 5 10
1 2 3
1 2 3
DP
C
I.B
D.U.M D.HEATER
1 3
1 3 5
FAN
CNP CNC
( WHT )
(RED)
(BLU)
X4
BCR
X4 X1 X1
HEATER
SW2 SW1
SWE
CN24
ON ( YLW )
OFF
DS
Refer to tables 1 and 2
for service PCB.
NOTES:
1. Symbols used in wiring diagram above are,
2. Indoor and outdoor connecting wires have polarities, 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 diagram for servicing.
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.
[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.
Check code
P1 Abnormality of room temperature thermistor(TH1)
P2 Abnormality of pipe temperature thermistor / Liquid(TH2)
P4 Abnormality of drain sensor(DS)
P5 Malfunction of drain-up machine
P6 Freezing / overheating protection is working.
P8 Abnormality of pipe temperature
P9 Abnormality of pipe temperature thermistor / Cond. / Eva.(TH5)
PLA-A24AA
PLA-A24AA
1
SYMBOL
C CAPACITOR<FAN MOTOR>
DP
DRAIN-UP MACHINE
DS DRAIN SENSOR
H2
DEW PREVENTION HEATER
MF FAN MOTOR
MV
VANE MOTOR
R.B WIRED REMOTE CONTROLLER BOARD
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>
MV
CN2S
5
H2
(WHT)
DC
2
13.1V
1
POWER POWER
1 3 1 3 1 3 1 2 1 3
CNDK CND
POWER A-CONTROL
(RED) (ORN)
CN2D CN3C
(WHT) (BLU)
CN51 CN41 CN2L
ZNR
CN32
LED3 LED2 LED1
D.SENSOR INTAKE LIQUID PIPE REMOCON
CN31 CN20 CN21 CN29 CN22
( WHT ) ( RED ) ( WHT ) ( BLK ) ( BLU )
1 2 3 1 2 1 2 1 2 1 2
TH1
TH2
TB5
2
TH5 1
: Connector,
Symptom
PLA-A30AA
PLA-A30AA
1
NAME SYMBOL
W.B
BZ
LED1
LED2
RU
SW1
SW2
Please set the voltage using the
remote controller.
For the setting method, please refer to
the indoor unit Installation Manual.
P.B
CNSK
(RED)
3
YLW
2 TB4
ORN S1
1
S2
YLW
S3
ORN
5
BRN
VANE
CN6V
( GRN )
W.B
BZ
9
LED2 LED1
CNB
SW1 SW2
WIRELESS
CN90
( WHT )
1 2
TRANSMISSION WIRES DC12V
: Terminal (block).
Check code
Abnormality of the signal transmission between remote
E0-E5
controller and indoor unit
E6-EF Abnormality of the signal transmission between indoor unit and outdoor unit
Abnormality of indoor controller board
Fb
Abnormality in outdoor unit. Refer to outdoor unit wiring diagram.
U*, F*
———— No trouble generated in the past
No corresponding unit
FFFF
12
PLA-A36AA
PLA-A36AA
1 1
NAME
WIRELESS REMOTE CONTROLLER BOARD
BUZZER
LED<RUN INDICATOR >
LED<HOT ADJUST>
RECEIVING UNIT
SWITCH<HEATING ON/OFF>
SWITCH<COOLING ON/OFF>
w1
TO
OUTDOOR
UNIT
RU
R.B
Table 1
TB6
SW1
MODELS Service board
1 2 3 4 5
PLA-A,AA ON
OFF
Table 2
SW2
MODELS Service board MODELS
1 2 3 4 5
ON
PLA-A12AA PLA-A30AA
OFF
1 2 3 4 5
PLA-A18AA ON PLA-A36AA
OFF
1 2 3 4 5
PLA-A24AA ON PLA-A42AA
OFF
Symptom
PLA-A42AA
PLA-A42AA
1
Service board
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF