Radiation Fin Temperature Rise - Daikin 2MXS40H2V1B Service Manual

SiBE121123_A

7.17 Radiation Fin Temperature Rise

L4
Error Code
Method of Error A radiation fin temperature rise is detected by checking the radiation fin temperature with the
compressor on.
Detection
Error Decision
Conditions
Supposed
Causes
Service Diagnosis
The radiation fin temperature with the compressor on is above A °C.
The error is cleared when the temperature drops below B °C
A B
(°C)
40 class 95
50 class 92.5
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.
(°C)
85
85
Troubleshooting for Outdoor Unit
202