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Mitsubishi Electric PURY-P72 Service Handbook page 227

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[ IX Troubleshooting ]
1. Error Code
5110
(THMU-A)
Heatsink temperature sensor (THHS) fault (Detail code 01)
2. Error definition and error detection method
When a short or an open of THHS is detected just before or during the inverter operation.
3. Cause, check method and remedy
P72 model
Cause
(1)
INV board failure
P96 and P120 models
Cause
(1)
THHS sensor failure
(2)
Contact failure
Refer to section -7- "Inverter (THMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 293)
1. Error Code
5110
(YHMU-A)
Heatsink temperature sensor (THHS) fault (Detail code 01)
2. Error definition and error detection method
When a short or an open of THHS is detected just before or during the inverter operation.
3. Cause, check method and remedy
Cause
(1)
INV board failure
Refer to section -7- "Inverter (YHMU-A)" under part [4] Troubleshooting Principal Parts for error codes related to the
inverter.(page 301)
HWE0803A
Check method and remedy
If the problem recurs when the unit is put into operation, replace
the INV board.
Check method and remedy
Check the THHS sensor reading on the LED monitor.
Replace the sensor if it reads below - 30°C[ -22°F] or above
150°C[302°F].
Check the connector connection (CNTH) on the INV board.
Check method and remedy
If the problem recurs when the unit is put into operation, replace
the INV board.
- 218 -
GB

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