Radiation Fin Temperature Rise - Daikin BA-Series Service Manual

SiBE05-722ED

4.23 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
RK(X)S25/35E2V1B, RK(X)S25/35G2V1B
RK(X)S25/35G2V1B9, RXS25/35J2V1B
RXS25K3V1B, RXS35K2V1B, RXS35L2V1B
Supposed
Causes
Service Diagnosis
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
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.
A (°C) B (°C)
90 85
98 78
Troubleshooting
94