118
Troubleshooting
Diagnostic procedure for check code
Check code Operation cause
[E5] 1. Inverter IOL operation
Inverter IOL short circuit 2. Service valve closed
3. Cooling bypass PMV error
4. Miswiring of communication between indoor and
outdoor units
14
Is the IOL circuit normal ?
1. Connector
2. Wiring
3. Outdoor PC board
Are the gas pipe and liquid
pipe service valves of the
outdoor unit fully open ?
Is wiring correct ?
Insufficient refrigerant, blockage,
pipe breakage.
Repair IOL circuit.
Open valves fully.
Set normal wiring.
No
No
No
Yes
Yes
Yes
Is the cooling bypass
PMV B normal ?
Cooling bypass PMV B error
No
Yes
(Check miswiring of the outdoor unit according to miswiring check function.)
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