Sanyo CH1852 - Manual (Page 59)

55
9-2. Air conditioner does not operate.
9-2-1. Circuit breaker trips (or fuse blows).
A. When the circuit breaker is set to ON, it is tripped soon. (Resetting is not possible.)
● There is a possibility of ground fault.
● Check insulation resistance.
If resistance value is 2M ½ or less, insulation is defective (“NO”).
Measure insulation
resistance of electrical
parts in outdoor unit.
NO
NO
Set circuit breaker to OFF. *
Measure insulation
resistance of electrical
parts in indoor unit.
1 Remove both power supply wires
and inter-unit wires from terminal
plate in outdoor unit.
Measure insulation resistance
of outdoor unit.
•
2 Remove inter-unit wires from
terminal plate in indoor unit.
Measure insulation resistance
of indoor unit.
•
•
•
Insulation of
outdoor unit
is defective.
Insulation of
indoor unit
is defective.
WARNING
1 1
2
8
7 2
3 3
4 4
5 5
6 6
G G
Indoor
unit
2
Outdoor
unit
1 1
Inter–unit
wiring Power supply
wiring
Circuit
breaker Power
supply
Ground
G
L2
L1
000-111 SM (18-68) 00.3.17 11:49 AM y [ W 55