Panasonic OCU-CR200VF5 Service Manual page 30

Troubleshooting for Each Error Code
E 6 2
Indication
1. Overload caused instantaneous excess current exceeding the protection level.
2. Compressor anomaly (short-circuit, ground fault, locked, etc.)
3. Short-circuit or ground fault of the connecting line between the inverter and compressor
Probable
Cause
4. Input power anomaly (instantaneous power failure, instantaneous voltage drop, Loss of
phase, etc.)
5. Inverter hardware failed
6. Malfunction by noise, etc.
1. Check the reason for overload operation.
Check if gas cooler fan motor anomaly (E27, E28) exists.
2. Check if the compressor is abnormal.
(1) Check the compressor motor winding resistance value.
(2) Check the insulation resistance between compressor terminal block and ground.
(3) Check if the current value is too high (9 [Arms] or above).
3. Check if any anomaly exists in the connecting line between the inverter and compressor.
Check
(1) Check if any problem exists such as loose terminal, wire breakage, etc.
(2) Check if any damage exists in the wiring.
(3) Check if any change of color exists in the 3-pole junction connector.
4. Check if any anomaly exists in the power supply.
(1) Check if any problem exists in the power input wiring (loose terminal, wire breakage,
(2) Check if any anomaly existed in the power supply (voltage drop, etc.).
1. Eliminate the cause of overload operation.
When the gas cooler fan motor anomaly (E27 or E28) is present, refer to the description of
error code E27.
2. Replace the compressor.
3. Correct the connecting wire between the inverter and compressor.
Corrective
(1) Correct the wire connection.
(2) Replace the wiring.
Action
(3) Replace the inverter-PCB and wiring.
4. Eliminate anomaly in the power supply.
(1) Correct the connection of the power input wiring.
(2) Eliminate the cause of power supply anomaly (Repair the power supply unit, etc.).
5. Replace the inverter-PCB.
etc.)
Detected
Inverter excess current (1st to 9th Trip)
Content
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