Mitsubishi Heavy Industries SRK20ZJ-S Service Manual

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116
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'10 • SCM-SM-094
3. ELECTRICAL WIRINGS 3.1 Outdoor units Models SCM40ZJ-S, 45ZJ-S
Color Marks
Mark Color Mark Color Item
Meaning of Marks
Description Item Description
BK
BR
Black
Brown
RD Y／GRed Yellow／Green
WH White
OR Orange
CNA-CN20S
EEV A,EEV B
R
Compressor motor
Electric expansion valve
（coil）
Reactor
Th2
Th3
Heat exchanger sensor
Outdoor air temp. sensor
Discharge pipe temp. sensor
CM
Th1
Connector
20S 4 Way valve（coil）
Suction pipe temp. sensorTh4
FMo Fan motor
Terminal blockTB1-TB3
（outdoor unit）
HEATER Crank case heater
FunctionColorIndication lamp
Warning lampRedLed e （1）
Self diagnosis function by led e
1 Time ash Current cut
2 Time ash Trouble of outdoor unit
3 Time ash Over current
4 Time ash Transmission error
5 Time ash Over heat of compressor
6 Time ash Error of signal transmission
7 Time ash Lock of compressor
8 Time ash Sensor error
（Except discharge pipe sensor）
Four sec light
and Discharge pipe sensor error
four sec o
Caution ・When the compressor does not run Immediately after
hitting on the button,wait for 5 to 10 minutes.（There is
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.
Light on Outdoor fan motor error
WIRING DIAGRAM
EEV
S
BK
WH
RD
V
W
U
FM0
CM
R
CNTH
CNFAN
S-2
BK
WH
WH
S-1
CNSUB
CNMAIN
S
R
BK
WH
IN
IN
S
R
O
O
250V 15A
FUSE
CN20S
G2
Y／G
C-2
RD
C-1
CN20V
CN20V
5
2
G1
Y／G
G
Y／G
CNEEV1
CNTH
TB2
CNA
CNB
TB1
N
L
A
EEV
B
Y／G
WH
BK
UNIT A
UNIT B
M
3～
M
M
M
POWER
SUPPLY
WH
RD
PWB 2（SUB）
PWB 1（MAIN）
20S
HEATER
WH
RD
CNHEAT
T2
T1
R
OR
YE
3
2
1
BK
WH
RD
3
2
1
BK
WH
BR
TB3
2 2 2
t゜ t゜ t゜
t゜
2
TH4
TH1 TH2 TH3
YE Yellow
RWC000Z232
a

Mitsubishi Heavy Industries SRK20ZJ-S Specifications

General

Brand	Mitsubishi Heavy Industries
Model	SRK20ZJ-S
Category	Air Conditioner
Language	English