Compressor System Sensor Abnormality - Daikin FTXS30LVJU Service Manual

Troubleshooting

4.19 Compressor System Sensor Abnormality

4.19.1 09/12/15/18 Class
H0
Remote
Controller
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 disconnected harness
Supposed
 Defective outdoor unit PCB
Causes
Troubleshooting
125
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
SiUS091133
Replace the harness.
No problem.
Keep on running.
Replace the outdoor unit
PCB.
(R11712)
Service Diagnosis