Mitsubishi SRK63ZEA-S1, Техническое руководство

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64
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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.
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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.
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Inspection of inductor conductivity
Remove the connector and check for conduc- tivity. It must be conductive.
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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. S
SRC63ZEA-S1, 71ZEA-S1
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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
20S
FMo
CNB
CND
CNJ
CNT
Th6
Th5
Th4
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