● Inspection of resistance value of
dischargepipe sensor.
Remove the connector and check the resis-
tance value. See the section of sensor char-
acteristics on page 58.
● Inspection of electronic expansion valve
To test if there is voltage.
(Voltage is only applied to the electronic expansion valve when the
valve angle is being changed.)
Red to white
Red to Orange
Brown to yellow
Brown to blue
If the expansion valve does not operate as shown above, it
is defective.
}
● Inspection of inductor conductivity
Remove the connector and check for conduc-
tivity. It must be conductive.
● Inspect power
transistor.
Remove the fasten
terminal and test out-
put voltage.
Check fuse. There should be conductivity.
CAUTION – HIGH VOLTAGE
(b) Outdoor unit inspection points
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.
SSRC63ZEA-S1, 71ZEA-S1
¡Power source and serial signal inspection
L to N: AC240V
1 to 2: AC240V
2 to 3: Normal if the voltage oscillates between DC 0 and approx. 12V
Normal if there is approximately DC 5 V 10 seconds
after the power supply is turned on.
BK
Color symbol
BL
OR
Y/G
Black
Blue
Orange
Yellow/Green
WH White
RD Red
GR Green
Y Yellow
N-1
N
WH
CNI
Y/G
Y/G
Y/G
CNO
CNG CNH
CNG CNH
G3
G2
Y/G
U
WH
RD
BK
W
CM
V
OR
OR
WH
RD
BK
OR
OR
AF_L1
AF_L2
L
GR
BL
GR
BL
AC.L
AC.N
AC.L
AC.N
L-1
L
BK
BK
2/N
1
WH
RD
F
250V
20A
BK
20SFMo
CNB CND CNJCNT
Th6Th5Th4
EEV
PWB2 (POWER)
PWB1 (MAIN)
CNG
RD
BK
PWB3 (CAPACITOR)
P_1
DC-P DC-N
N_1
RD
BK
P_1
N_1
3
Power Source
1 Phase
240V 50Hz
Indoor unit
RL
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