101
Troubleshooting
Diagnostic procedure for check code
Check code
Operation cause
[AE]
1. Outdoor unit service valve closed
Low Hz time discharge temp. (TD1) alarm
2. Cooling bypass PMV error
3. TD1 sensor error
4. Insufficient refrigerant, blockage in pipe
5. Blockage of indoor filter
6. Blockage of PMV assembly on the liquid line
14
Are the gas pipe and liquid pipe
service valves of the outdoor unit
fully open ?
Is there a blockage in the PMV
assembly on the liquid line ?
Is the wiring correct ?
Insufficient refrigerant, blockage,
pipe breakage.
Open valves fully.
Replace both the PMVs.
Set normal wiring.
No
No
Yes
Yes
Yes
No
Are the resistance characteristics
of TD1 sensor normal ?
Replace TD1 sensor.
No
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.)
Check code
Operation cause
[AF]
Outdoor unit power source phase
Abnormal power phase order or missing phase of
order miswiring
power supply to the outdoor unit
There is an abnormal power phase order or missing phase of power supply to the outdoor unit. Check power
supply wiring.
Содержание A90-0132
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