Mitsubishi SCM40ZS-S, Техническое руководство

Страница: 218 / 335

-
217
-
'16 • SCM-T-199
◆
Inspection power transistor
Remove the fasten terminal and test
output voltage
◆
Inspection of outdoor
fan motor
See page 219.
◆
Inspection of resistance value of sensor
Remove the connector and check the resistance value.
See the section of sensor characteristics on page 209.
BK
WH RD
V W U
FMo
CM
CNTH
CN20S CNFAN
M
3 ～
M
2 2 2
t
゜
t
゜
t
゜
Tho-R
2
t
゜
Tho-S Tho-A Tho-D
S1 R1
SNSUB
S-2
C-2
②
①
③
T1
L1
（
Y
）
T2
（
Y
）
T11
L2
（
BL
）
T12
（
BL
）
20S
CNHEAT
HEATER
(12) Outdoor unit inspection points
Models SCM40ZS-S,45ZS-S
Color marks
Mark Color
BK
BR
Black
Brown
RD
Y
／
G
Red
Yellow
／
Green
WH White
BL Blue
EEV A
BK
WH
WH
S-1
CNMAIN
S
IN
R
IN
BK
WH
S
O
R
O
250V 15A
FUSE
RD
C-1
CN20V
3
2
G1
Y
/
G
G2
Y
/
G
CNEEV1
CNA
CNB
TB1
N
L
EEV B
Y
/
G
WH
BK
UNIT A
UNIT B
M M
Power source
1 Phase
AC220-240V 50Hz
WH RD
PCB 2
（
SUB
）
PCB 1
（
MAIN
）
RD
RD
3
2
1
3
2
1
BK
WH
BR
BR
TB2
YE Yellow
Display Voltage range
◆
Voltage check in PCB
The normal range is as follows.
①
DC280V DC230V
-
DC310V
②
DC 2 20V DC 2 18V
-
DC 2 22V
③
DC 2 13V DC 2 12V
-
DC 2 14V
④
DC 2 15V DC 2 14V
-
DC 2 16V
⑤
DC 22 5V DC 22 4V
-
DC 22 6V
⑥
DC 2.5V DC 2.3V
-
DC 2 2.5V
CAUTION- HIGH VOLTAGE
High voltage is produced in the control box. Don't touch
electrical parts in the control box for 5 minutes after the
unit is stopped.
◆
Power source and serial signal inspection
①
to
②
: AC220/230/240V
②
to
③
: Normal if the voltage oscillates between
DC0 and approx. 20V
◆
Inspection of electronic expansion valve
See page 219.
④
⑥
⑤