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Troubleshooting
Diagnostic procedure for check code
Check code Operation cause
[bE] 1. Ps sensor error
Low pressure (Ps) protective operation 2. Service valve closed
3. Indoor fan capacitor error
4. Indoor/outdoor PMV blockage
5. Indoor heat exchanger blockage
6. SV2 circuit
7. Incorrect wiring of communication cable between
indoor and outdoor units
Is there a blockage on the indoor
filter or heat exchanger ?
Are the gas pipe and liquid
pipe service valves of the
outdoor unit fully open ?
Is the wiring correct ?
Insufficient refrigerant, blockage,
pipe breakage.
Clean or remove blockage.
Open valves fully.
Set normal wiring.
Yes
No
No
No
Yes
Yes
Is SV2 bypass circuit normal?
Modify SV2 bypass circuit. Is SV2 bypass
circuit normal ?
No
Yes
Are the characteristics of low
pressure sensor normal ?
Replace low pressure sensor.
No
Yes
(Check miswiring of the outdoor unit according to miswiring check function.)
Repair defective part.
Does the indoor fan operate ?
No
Yes
Are the following items
related to indoor fan
motor normal ?
1. Connection
2. Capacitor
3. Motor
Check indoor PC board.
If defective, replace.
No
Yes
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