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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. 7 (L1) and No. 8 (L2) on the 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 in indoor and outdoor units.
●
Check that coating of lead wires is not damaged.
●
Check that lead wires and connectors are firmly connected.
●
Check that wiring is correct.
1
2
4
5
6
8
1
2
3
4
5
6
Indoor
unit
Outdoor
unit
Inter–unit
power wiring
Inter–unit
control wiring
7
Power supply :
Single- phase, 60Hz
115V.....CH0951,CH1251
230/208V............CH1852
3
G
Ground
G
Ground
G
L1
L2
WARNING
Hazardous voltage can cause ELECTRIC SHOCK or
DEATH. Disconnect power or turn off circuit breaker
before you start checking or servicing.
000-111 SM (18-68) 00.3.17 11:49 AM y[W 54