9. TROUBLESHOOTING
9-1. Check before and after troubleshooting
9-1-1. Check power supply wiring.
●
Check that power supply wires are correctly connected to terminals No. 1 and No. 2 on the 3p terminal plate in
the outdoor unit.
9-1-2. Check inter-unit wiring.
●
Check that inter-unit wiring is correctly connected to the indoor unit from the outdoor unit.
9-1-3. Check power supply.
●
Check that voltage is in specified range (±10% of the rating).
●
Check that power is being supplied.
9-1-4. Check lead wires and connectors.
●
Check that coating of lead wires is not damaged.
●
Check that lead wires and connectors are firmly connected.
●
Check that wiring is correct.
4
3
2
1
Ground
Ground
Power supply :
220–240V ~ 50Hz
4
3
2
1
1
2
Ground
Power
supply
Outdoor Unit
I
ndoor Unit A
Inter-unit
wiring
4
L
I
ndoor Unit B
N
1
2
4
L
N
1
2
27
Hazardous voltage can cause ELECTRIC SHOCK or DEATH.
Disconnect power or turn off circuit breaker before you
start checking or servicing.
WARNING