Radiation Fin Temperature Rise - Daikin FTXG20LV1BW Service Manual

Troubleshooting

4.24 Radiation Fin Temperature Rise

L4
Error Code
Method of Error A radiation fin temperature rise is detected by checking the radiation fin thermistor with the
compressor on.
Detection
Error Decision
Conditions
20/25/35 class
50 class
Supposed
Causes
89
If the radiation fin temperature with the compressor on is above A°C.
The error is cleared when the radiation fin temperature drops below B°C.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
A (°C)
98
85
Defective outdoor fan motor
Short circuit
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.
B (°C)
78
56
SiBE041401E
Service Diagnosis