Compressor Sensor System Abnormality - Daikin D-Series Service Manual

Troubleshooting
5.19

Compressor Sensor System Abnormality

H0
Remote
Controller
Display
Outdoor Unit LED A
Display
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
236
5 1 4 2 4 3 1 4
Fault condition is identified by the supply voltage and the DC voltage which is detected
before the compressor startup.
Fault condition is identified by compressor current which is detected right after the
compressor startup.
The detected valve of the supply voltage and the DC voltage is obviously low or high.
The compressor current doesn't run when the compressor is started.
Reactor disconnection
Compressor disconnection
Outdoor unit PCB defective
Compressor defective
1
Si12-619A
Service Diagnosis