Mitsubishi SCM40ZJ-S Service Manual page 140

FUSE
250V 20A
TB1
BK BK
R
L IN
POWER
WH
WH
S
SUPPLY N IN
Y G
G1
Y G
G
Y G
TB2
BK
1
WH
2 CNA
UNIT A
RD
3
Y G
TB3
BK
1
WH
CNB
2
UNIT B
BR
3
Y G
TB4
BK
1
WH
CNC
2
UNIT C
BL
3
Y G
TB5
BK
1
WH
CND
2
UNIT D
YE
3
Y G
CN20S
CNHEAT
Y G
WH RD
HEATER 20S
Color Marks
Mark Color Mark Color
BK Black RD Red
BL Blue WH White
BR Brown Yellow
YE
GN Green Y G Yellow Green
OR Orange
PWB 2 SUB
G2 CNEEV1 CNEEV2 CNTH
Y G
WH RD BL GN
M M M M
EEV EEV EEV EEV
A B C D
Meaning of Marks
Item Description
CNA-CN20S Connector
20S 4 Way valve coil
CM Compressor motor
EEV A,EEV B Electric expansion valve
EEV C,EEV D coil
FMo Fan motor
HEATER Crank case heater
BK
R
R
O
WH
S
S
O YE
T1
WH
S-1 S-2
OR
T2
RD
C-1 C-2
5
CNMAIN CNSUB
2
CN20V U RD
CN20V
V WH
W
BK
PWB 1 MAIN
CNFAN
CNTH
2 2 2 2
Tho-S Tho-R Tho-A Tho-D
Item Description
R Reactor
TB1 5 Terminal block
Heat exchanger sensor
Tho-R
outdoor unit
Outdoor air temp. sensor
Tho-A
Discharge pipe temp. sensor
Tho-D
Suction pipe temp. sensor
Tho-S
Indication lamp Color
Led e 1 Red Warning lamp
Self diagnosis function by led e
1 Time flash Current cut
2 Time flash Trouble of outdoor unit
R
3 Time flash Over current
4 Time flash Transmission error
5 Time flash Over heat of compressor
6 Time flash Error of signal transmission
M
7 Time flash Lock of compressor
3
CM 8 Time flash Sensor error
Except discharge pipe sensor
Light on Outdoor fan motor error
Four sec light
and Discharge pipe sensor error
M
four sec off
FMo
Caution When the compressor does not run Immediately after
hitting on the button,wait for 5 to 10 minutes.
possibility of delayed start.
High voltage is produced in the control box. don't touch
electrical parts in the control box for 5 minutes after
cutting power supply.
Function
There is