Compressor System Sensor Abnormality - Daikin FTXS20G2V1B Service Manual

SiENBE04-808_A

4.16 Compressor System Sensor Abnormality

4.16.1 20/25/35/42 Class
H0
Remote Control
Display
„ The system checks the DC current before the compressor starts.
Method of
Malfunction
Detection
„ The DC current before compressor start-up is out of the range 0.5 ~ 4.5 V (sensor output
Malfunction
Decision
„ The DC voltage before compressor start-up is below 50 V.
Conditions
„ Broken or disconnection of harness
Supposed
„ Defective outdoor unit PCB
Causes
Troubleshooting
Service Diagnosis
converted to voltage value)
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check the relay harness for the
compressor.
Is the harness
broken?
NO
Turn off the power and turn it on
again.
Restart operation and error
displayed again?
YES
YES
NO
Troubleshooting
Replace the harness.
No problem.
Keep on running.
Replace the outdoor unit
PCB.
(R11712)
124