Radiation Fin Temperature Rise - Daikin FTXS30HVJU Service Manual

Troubleshooting

4.21 Radiation Fin Temperature Rise

L4
Remote
Controller
Display
Method of
A radiation fin temperature rise is detected by checking the radiation fin thermistor with the
Malfunction compressor on.
Detection
 The radiation fin temperature with the compressor on is above 221°F(105°C).
Malfunction
 The error is cleared when the temperature drops below 206.6°F(97°C).
Decision
 If a radiation fin temperature rise takes place 4 times successively, the system will be shut
Conditions
 The error counter will reset itself if this or any other error does not occur during the following 60-
 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
 Silicon grease is not applied properly on the heat radiation fin after replacing outdoor unit PCB
 Foreign matter stuck in the outdoor unit fan
98
down.
minute compressor running time (total time).
SiUS04-924
Service Diagnosis