Wiring Diagram - Mitsubishi Electric PLA-SM71EA2 Service Manual

7

WIRING DIAGRAM

[LEGEND]
SYMBOL NAME
I.B INDOOR CONTROLLER BOARD
CN2L CONNECTOR (LOSSNAY)
CN32 CONNECTOR (REMOTE SWITCH)
CN41 CONNECTOR (HA TERMINAL-A)
CN51 CONNECTOR (CENTRALLY CONTROL)
CN105 CONNECTOR (IT TERMINAL)
F1 FUSE (T6.3AL250V)
LED1 POWER SUPPLY (I.B)
LED2 POWER SUPPLY (R.B)
LED3 TRANSMISSION (INDOOR-OUTDOOR)
SW1 SWITCH (MODEL SELECTION) Refer to <Table 1>.
SW2 SWITCH (CAPACITY CODE) Refer to <Table 2>.
SWE SWITCH (EMERGENCY OPERATION)
DP DRAIN PUMP
FS DRAIN FLOAT SWITCH
MF FAN MOTOR
MV VANE MOTOR
I.B
1 4
1
BK
TB4
YE
S1
OG
TO
S2
OUTDOOR
OG
UNIT S3
BN
Notes: 1. Symbols used in wiring diagram on the left are,
, :Connector.
2. Indoor and outdoor connecting wires are made with polarities, 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.
4. This diagram shows the wiring of indoor and outdoor connecting
wires (specification of 230V), adopting superimposed system of
power and signal.
● If the separate indoor/outdoor unit power supplied system is
applied, refer to Fig. 2.
● For power supply system of this unit, refer to the caution label
located near this diagram.
Caution when connecting the remote controller cable to the terminal block TB5
<Fig. 1>
Do not connect 230V power supply cable.
Secure with a
band at the location
shown in the diagram
Be sure to connect the remote
controller cable (0.3mm ) to the
2
locations shown in diagram
OCH784
SYMBOL
TERMINAL BLOCK (INDOOR/OUTDOOR
TB4
CONNECTING LINE)
TERMINAL BLOCK (REMOTE CONTROLLER
TB5,TB6
TRANSMISSION LINE)
ROOM TEMP. THERMISTOR
TH1
(0°C / 15kΩ, 25°C / 5. 4kΩ DETECT)
PIPE TEMP. THERMISTOR/LIQUID
TH2
(0°C / 15kΩ, 25°C / 5. 4kΩ DETECT)
COND. / EVA. TEMP. THERMISTOR
TH5
(0°C / 15kΩ, 25°C / 5. 4kΩ DETECT)
R.B WIRED REMOTE CONTROLLER
OPTION PART
W.B PCB OF SIGNAL RECEIVER
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)
TERMINAL BLOCK (INDOOR UNIT POWER
TB2
AND TRANSMISSION LINE)
MF DP
MS MS
TH5 TH2
3~ 3~
FS
tº tº tº
4
7 3 1 1 4 1 2
CN20
CNMF CNP CN4F CN44
(WH) (WH) (WH) (WH)
1
CN105
~
(RD)
–
+
~
F1
LED1
CN01 CN3C (BU) CN32 (WH)
(BK)
3 5 1 3 3 1
Cut the J58 when a remote
controller other than
PAR-4*MAA/CT01MAA
is connected.
:Terminal (block),
[Self-diagnosis]
1. For details on how to operate self-diagnosis with the wireless remote controller,refer to the technical manuals etc.
Check code
Cable strap
P1
P2
P4
P5
P6
P8
P9
PA
<Table 1> SW1 (MODEL SELECTION)
Manufacture/Service
NAME
1 2 3 4 5 6
<Table 2> SW2 (CAPACITY CODE)
CAPACITY Manufacture/Service
71
100
125
● AUTOMATIC FILTER
ELEVATION PANEL
TH1
4
1
CN4G
1 1 2 4 1 5 1
CN2L CN41 CN51
(RD) (RD) (WH) (WH)
4
5
1 4 LED3
LED2
CN4G
(BU)
SWE
CN90(WH)
ON OFF
J58 J57 J52 J41 J42
SW2 SW1
1
9
9
Refer to Table 1 and 2
9 1
CNB
<Fig. 2>
TB2
POWER SUPPLY
L
~(1 PHASE)
N
230V 50Hz
S2
TO OUTDOOR
UNIT
S3
Symptom
Abnormality of room temperature thermistor (TH1).
Abnormality of pipe temperature thermistor / Liquid (TH2).
Float switch connector open (FS).
Malfunction of Drain pump.
Freezing / overheating protection is working.
Abnormality of pipe temperature.
Abnormality of pipe temperature
thermistor / Cond. /Eva. (TH5).
Leakage error (refrigerant system)
13
ON
OFF
CAPACITY Manufacture/Service
1 2 3 4 5 1 2 3 4 5
ON 140 ON
OFF OFF
1 2 3 4 5
The black square ( ) indicates
ON
a switch position.
OFF
1 2 3 4 5
ON
OFF
MV MV MV MV
M M M M
5 5 5 5
20
2 20
1 19
CNV
(WH)
R.B
TB5
2 B
2
1 A
TB6
W.B
SIGNAL RECEIVER
BZ
LED2 LED1
CORNER PANEL
RU
(OPTION PART)
SW1
SW2
RD
5
BU CN01
3
(BK)
BK
1
BU
3
CN3C
GY
(BU)
1
Check code Symptom
PB(Pb)
Indoor unit fan motor error.
PL Refrigerant circuit abnormal.
Abnormality of the signal transmission between
E0~E5
remote controller and indoor unit.
Abnormality of the signal transmission between
E6~EF
indoor unit and outdoor unit.
FB(Fb)
Abnormality of indoor controller board.
Abnormality in outdoor unit. Refer to outdoor
U*, F*
unit wiring diagram.