Air Conditioner Does Not Operate - Sanyo SPW-X253G56 Service Manual

(2)

Air conditioner does not operate

1 1 1 1 1 Circuit breaker trips (or fuse blows).
(a) When the circuit breaker is set to ON, it is tripped soon.
• There is a possibility of ground fault.
• Check insulation resistance.
If resistance value is 1MΩ or less, it is a defect of insulation.
(Example)
1
Outdoor
L 5
Circuit
6
N
breaker
Power
supply
cords
Earth
*Set the circuit breaker to OFF.
Remove power supply cords
1
from the terminal plate in
the outdoor unit.
• Check insulation resistance
of power supply cords.
OK
Remove interunit power line
2
from the terminal plate in
the outdoor unit.
• Check insulation resistance
of outdoor unit.
OK
3 Remove interunit power line
from the terminal plate in
the indoor unit.
• Check insulation resistance
of indoor unit.
OK
Interunit power lines are
defective.
2
3
Indoor
unit
unit
4
1
1
2
2
3
3
4
4
Interunit
power line
NO
NO
NO
– 57 –
4. Service procedures
1
Outdoor
L1
5
Circuit
L2 6
breaker
L3 7
N
8
Power
supply
cords
Earth
Execute
rewiring.
Insulation of
outdoor unit
is defective.
Insulation of
outdoor unit
is defective.
Execute
rewiring.
2
3
Indoor
unit
unit
4
1
1
2
2
4
4
3
3
Interunit
power line
• Check insulation
resistance of
electrical parts
in the outdoor unit.
• Check insulation
resistance of
electrical parts
in the outdoor unit.
0613_X_S
SM830042
4