Overcurrent Error Due To Short-Circuited Motor; Heatsink Overheat Protection At Startup - Mitsubishi Electric PURY-P72 Service Handbook
Hide thumbs
Also See for PURY-P72:
- Service handbook (403 pages) ,
- Service handbook (387 pages) ,
- Service handbook (404 pages)
Table of Contents
[ IX Troubleshooting ]
1. Error Code
4250
4255
Overcurrent error due to short-circuited motor (Detail code 105)
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
In the case of 4250
(1)
Short - circuited compressor
(2)
Output wiring
In the case of 4255
(1)
Short - circuited fan motor
(2)
Output wiring
(3)
Electromagnetic contactor (52F) actuation failure
(P120, P144 only)
Refer to section -7- "Inverter" under part [4] Troubleshooting Principal Parts for error codes related to the inverter.
1. Error Code
4260
(TJMU-A)
Heatsink overheat protection at startup
2. Error definition and error detection method
The heatsink temperature (THHS) remains at or above TOH for 10 minutes or more at inverter startup.
Model
P72 model
P96, P120, P144 models
3. Cause, check method and remedy
Same as 4230 error
1. Error Code
4260
(YJMU-A)
Heatsink overheat protection at startup
2. Error definition and error detection method
The heatsink temperature (THHS) remains at or above 100°C [212°F] for 10 minutes or more at inverter startup.
3. Cause, check method and remedy
Same as 4230 error
HWE09130
Cause
Cause
TOH
100°C [212°F]
90°C [194°F]
- 232 -
Check method and remedy
Refer to IX [4] -7- (2) [2].
Check for a short circuit.
Check method and remedy
Refer to IX [4] -7- (2) [5].
Check for a short circuit.
Check the wiring between the FAN board, 52F, and
fan motor.
GB
Hide quick links:
Table of Contents
Troubleshooting
