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17.4.11 H30 (Compressor Discharge Temperature Sensor Abnormality)
Malfunction Decision Conditions
During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe
temperature sensor are used to determine sensor errors.
Malfunction Caused
Faulty
connector
connection.
Faulty
sensor.
Faulty
PCB.
Troubleshooting
When abnormality indication starts again.
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
component breakdown, always switch
off the power before remove and
connect the component.
Is the measured resistance of the outdoor discharge pipe
temperature sensor matches the value specified in its
characteristic chart?
temperature sensor matches the value specified in its
characteristic chart?
Is the connector connection normal?
YES
YES
Check the outdoor discharge pipe temperature sensor:
Plug out connector from the outdoor unit PCB.
Measure the resistance of the outdoor discharge pipe
temperature sensor.
Measure the resistance of the outdoor discharge pipe
temperature sensor.
Check the connector connection:
Turn off the power.
Check the connector connection.
Check the connector connection.
Connector poor contact.
Correct the connection.
Correct the connection.
Defect in outdoor unit PCB.
Replace the outdoor unit PCB.
Replace the outdoor unit PCB.
Defect in outdoor discharge pipe
temperature sensor.
Replace the outdoor discharge pipe
temperature sensor.
temperature sensor.
Replace the outdoor discharge pipe
temperature sensor.
NO
NO
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