Heatsink Temperature Sensor (Thhs) Fault; High-Pressure Sensor Fault - Mitsubishi Electric PUHY-RP200 Service Handbook

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[ IX Troubleshooting ]
1. Error Code
5110
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 -6- "Inverter" under part [4] Troubleshooting Principal Parts for error codes related to the inverter.(page 234)
1. Error Code
5201
High-pressure sensor fault (63HS1/63HS2)
2. Error definition and error detection method
ŒIf the high pressure sensor or intermediate pressure sensor detects 0.098MPa [14psi] or less during the operation, the outdoor
unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes when the detected high pressure sensor
or intermediate pressure sensor is 0.098MPa [14psi] or more.
ŒIf the high pressure sensor or intermediate pressure sensor detects 0.098MPa [14psi] or less just before the restart, the out-
door unit makes an error stop, and the error code "5201" will appear.
ŒDuring 3-minute antirestart mode, preliminary errors will be displayed on the LED display.
ŒA error is not detected for 3 minutes after the compressor start, during defrost operation, or 3 minutes after defrost operation.
3. Cause, check method and remedy
(1)
High pressure sensor failure
Intermediate pressure sensor failure
(2)
Pressure drop due to refrigerant leak
(3)
Torn wire coating
(4)
A pin on the male connector is missing or contact failure
(5)
Disconnected wire
(6)
High pressure sensor input circuit failure on the control board
HWE10010
If the problem recurs when the unit is put into operation, replace the INV board.
Cause
- 178 -
Check method and remedy
Check method and remedy
Refer to the page on the troubleshooting of
the high pressure sensor.
(IX [4] -1- (page 224))
GB

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