Troubleshooting
Si10-417
68
Service Diagnosis
5.2.21 Discharge Pipe Temperature Control
Remote
Controller
Display
F3
Method of
Malfunction
Detection
The discharge pipe temperature control (stop, frequency
drooping, etc.) is checked with the temperature being
detected by the discharge pipe thermistor.
Malfunction
Decision
Conditions
If a stop takes place 6 times successively due to
abnormal discharge pipe temperature, the system will
be shut down.
If the temperature being detected by the discharge
pipe thermistor rises above 120°C, the compressor
will stop. (The error is cleared when the temperature
has dropped below 107°C.)
Stop temperatures (in case of 5.0kW class)
(1) 110°C : above 45Hz (rising), above 40Hz (dropping)
(2) 102°C : 30~45Hz (rising), 25~40Hz (dropping)
(3) 98°C : below 30Hz (rising), below 25Hz (dropping)
The error counter will reset itself if this or any other
error does not occur during the following 60-minute
compressor running time (total time).
Supposed
Causes
Refrigerant shortage
Four way valve malfunctioning
Discharge pipe thermistor defective
(heat exchanger or outdoor temperature thermistor
defective)
Outdoor unit PCB defective
Water mixed in the local piping
Electronic expansion valve defective
Stop valve defective
Si10-417.fm Page 68 Wednesday, September 22, 2004 6:38 PM
