Wiring Diagram - Mitsubishi Electric Mr.SLIM PLA-SM71EA Service Manual

7

WIRING DIAGRAM

PLA-SM71EA.UK
[LEGEND]
SYMBOL NAME
I.B INDOOR CONTROLLER BOARD
CN2L CONNECTOR (LOSSNAY)
CN32 CONNECTOR (REMOTE SWITCH)
CN41
CONNECTOR (HA TERMINAL-A)
CN51 CONNECTOR (CENTRALLY CONTROL)
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 CONNECTOR (EMERGENCY OPERATION)
DP DRAIN PUMP
FS DRAIN FLOAT SWITCH
MF FAN MOTOR
MV VANE MOTOR
I.B
TB4
YE
S1
OG
TO
S2
OUTDOOR
OG
UNIT S3
BN
1. Symbols used in wiring diagram above are,
Notes:
: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
2
controller cable (0.3mm ) to
the locations shown in diagram
OCH683
PLA-SM100EA.UK
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
3~ 3~
4
1 7 3 1
CNMF CNP
(WH) (WH)
2 1
CN2L (RD)
4
1
CN41 (WH)
+ –
1 5
F1
LED1
CN51 (WH)
CN01 CN3C (BU)
(BK)
1 3 5 1 3
BK
: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
PLA-SM125EA.UK
NAME
1
CN4G
FS TH1
tº
4
4 4
1 5 1 1 2
CN4G CN4F
CN105 CN20
(RD)
(BU) (WH) (RD)
SWE
ON OFF
J41 J42
SW2 SW1
CN32 (WH)
3 1
Refer to Table 1 and 2
<Fig. 2>
POWER SUPPLY
~(1 PHASE)
230V 50Hz
TO OUTDOOR
UNIT
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)
18
PLA-SM140EA.UK
<Table 1> SW1 (MODEL SELECTION)
MODELS Manufacture/Service
1 2 3 4 5 6
PLA-
ON
SM.EA
OFF
<Table 2> SW2 (CAPACITY CODE)
CAPACITY Manufacture/Service CAPACITY Manufacture/Service
1 2 3 4 5 1 2 3 4 5
140
71 ON
OFF
1 2 3 4 5
The black square ( ) indicates
100 ON
a switch position.
OFF
1 2 3 4 5
125 ON
OFF
AUTOMATIC FILTER
SIGNAL RECEIVER
4
ELEVATION PANEL
CORNER PANEL
(OPTION PART)
(OPTION PART)
BZ
CNB
LED2 LED1
TH5 TH2
RU
9
1
SW1
SW2
tº tº
9
4
9 1
1 1
CN44
CN90
(WH) (WH)
R.B
2
LED3
2
1
LED2
TB5
CNV
(WH)
19 1
20 2
20
5 5 5 5
M M M M
MV MV MV MV
RD
TB2
5
L BU CN01
3
(BK)
N
BK
1
S2
BU
3
CN3C
S3
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.
U*, F*
Abnormality in outdoor unit. Refer to outdoor
unit wiring diagram.
ON
OFF
W.B
2
1
TB6