25
- 25 -
HWE10170
GB
1. Error
Code
Short-circuited IPM/Ground fault (Indoor unit)
2. Error
definition and error detection method
When IPM/IGBT short damage or grounding on the load side is detected just before starting the inverter.
3. Cause, check method and remedy
Refer to section [8] Troubleshooting, item 3. DC fan motor (fan motor/INV board) for error codes related to the inverter.
(page 47)
1. Error
Code
Overcurrent error due to short-circuited motor (Indoor unit)
2. Error
definition and error detection method
When a short is detected on the load side just before starting the inverter operation.
3. Cause, Check method and remedy
Refer to section [8] Troubleshooting, item 3. DC fan motor (fan motor/INV board) for error codes related to the inverter.
(page 47)
4255
Cause
Check method and remedy
(1)
Ground fault of the fan motor
Refer to [8] 3.2.[4].(page 49)
(2)
Inverter failure
1)
Refer to [8] 3.2.[1].(page 48)
2)
Refer to [8] 3.2.[2].(page 48)
4255
Cause
Check method and remedy
(1)
Short-circuited fan motor coil or inverter failure
1)
Refer to [8] 3.2.[1].(page 48)
2)
Refer to [8] 3.2.[2].(page 48)
3)
Refer to [8] 3.2.[3].(page 49)
(2)
Output wiring
Check for a short circuit
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