Radiation Fin Temperature Rise - Daikin H Series 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
 If the radiation fin temperature with the compressor on is above A.
Malfunction
 The error is cleared when the radiation fin temperature drops below B.
Decision
 If the error repeats, the system is shut down.
Conditions
 Reset condition: Continuous run for about 60 minutes without any other error
 Defective outdoor fan motor
Supposed
 Short circuit
Causes
 Defective radiation fin thermistor
 Disconnection of connector
 Defective outdoor unit PCB
 Silicon grease is not applied properly on the radiation fin after replacing the outdoor unit PCB.
Service Diagnosis
A 105°C (221°F)
B 97°C (206.6°F)
SiUS04-924_A
101