Compressor System Sensor Abnormality - Daikin K-Series Service Manual

SiBE061121.book Page 97 Monday, April 25, 2011 3:21 PM
SiBE061121

4.17 Compressor System Sensor Abnormality

4.17.1 25/35 Class
H0
Remote
Controller
Display
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
The system checks the DC current before the compressor starts.
The DC current before compressor start-up is out of the range 0.5 ~ 4.5 V (sensor output
converted to voltage value)
The DC voltage before compressor start-up is below 50 V.
Broken or disconnection of harness
Defective outdoor unit PCB
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.
YES
Is the harness broken?
NO
Turn off the power and turn it on
again.
Restart operation NO
and error displayed
again?
YES
Troubleshooting
Replace the harness.
No problem.
Keep on running.
Replace the outdoor unit
PCB.
(R11712)
97