A SERVICE OF

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53
12. TROUBLESHOOTING
12-1. Check Before and After Troubleshooting
12-1-1. Check Power Supply Wiring
Check that power supply wires are correctly connected to Terminals L and N on the terminal plate in the
outdoor unit.
12-1-2. Check Inter-Unit Wiring
Check that inter-unit wiring is correctly connected to the outdoor unit from the indoor unit.
12-1-3. Check Power Supply
Check that voltage is in specified range (±10% of the rating).
Check that power is being supplied.
12-1-4. Check Lead Wires and Connectors in Indoor and Outdoor Units
Check that coating of wires is not damaged.
Check that lead wires and connectors are firmly connected.
Check that wiring is correct.
INDOOR UNIT
Terminal (4P) Terminal (6P)
(Inter-unit)
Power line
115V
OUTDOOR UNIT
1
2
3
4
GG
1
2
3
4
G
5
L1
Power supply
Single-phase 60 Hz
115 VAC
L2
Grounding line
6
Grounding line
Disconnect switch
(Field supply)