Troubleshooting SiENBE12-713
258 Service Diagnosis
5.18 Compressor Sensor System Abnormality
Remote Control
Display
H0
Outdoor Unit LED
Display
A 5 1 4 2 4 3 1 4 1
Method of
Malfunction
Detection
" 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.
Malfunction
Decision
Conditions
" 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.
Supposed
Causes
" Reactor disconnection
" Compressor disconnection
" Outdoor unit PCB defective
" Compressor defective
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