48
Check code Operation cause
[E5] 1. Inverter IOL operation.
Inverter IOL operation 2. Service valve closed.
3. Outdoor PMV 1 error.
4. Miswiring of communication between indoor and
outdoor unit.
Troubleshooting
Diagnostic procedure for check code
Is IOL circuit normal?
1. Connector
2. Wiring
3. Outdoor PC board
Are gas pipe, liquid pipe and
service valve of the outdoor
unit fully open?
Is outdoor PMV 1
normal?
1. Connector connection
2. Wiring
3. Coil
4. Valve unit
5. Outdoor PC board
Is wiring correct?
Repair IOL circuit
Repair outdoor PMV
Open service valve fully
j
j
j
h
h
h
No
No
No
Ye s
Ye s
Ye s
Set normal wiring
h
No
(Check miswiring of the outdoor unit according to miswiring check function.)
Insufficient refrigerant,
blockage, pipe breakage
j
Ye s
(Check there is no blockage or pipe breakage.)
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