SiAF341904E
Troubleshooting by Error Code
Part 6 Service Diagnosis
229
5.28 Discharge Pipe Temperature Abnormality
Applicable
Models
All outdoor unit models
Error Code
F3
Method of Error
Detection
Detect according to temperature detected with the discharge pipe or compressor body
thermistor.
Error Decision
Conditions
When discharge pipe temperature becomes abnormally high (i.e., 135°C or more)
When discharge pipe temperature sharply rises (remains at 120°C or more for a period of
consecutive 10 minutes)
When compressor surface temperature becomes abnormally high (i.e., 120°C or more)
When compressor surface temperature sharply rises (remains at 110°C or more for a period
of consecutive 10 minutes)
Supposed
Causes
Abnormal discharge pipe temperature
Defective discharge pipe thermistor
Abnormal compressor surface temperature
Defective compressor body thermistor
Defective outdoor unit main PCB
