Radiation Fin Temperature Rise - Daikin FTXS09HVJU Service Manual

SiUS04-904

4.19 Radiation Fin Temperature Rise

L4
Remote
Controller
Display
A radiation fin temperature rise is detected by checking the radiation fin thermistor with the
Method of
compressor on.
Malfunction
Detection
Malfunction If the radiation fin temperature with the compressor on is above 194°F (90°C).
 If a radiation fin temperature rise takes place 4 times successively, the system is shut down.
Decision
 The error counter is reset if this or any other error does not occur during the following 60-minute
Conditions
 Fin temperature rise due to defective outdoor unit fan
Supposed
 Fin temperature rise due to short-circuit
Causes
 Fin thermistor defective
 Connector in poor contact
 Outdoor unit PCB defective
132
compressor running time (total time).
Troubleshooting
Service Diagnosis