Daikin FTXR-T Series, Руководство по обслуживанию

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SiUS041829E Troubleshooting
Part 6 Service Diagnosis 107
4.24 Radiation Fin Temperature Rise
Error Code
L4
Method of Error
Detection
A radiation fin temperature rise is detected by checking the radiation fin thermistor with the
compressor on.
Error Decision
Conditions
 If the radiation fin temperature with the compressor on is above A .
 The error is cleared when the radiation fin temperature drops below B .
 If the error repeats, the system is shut down.
 Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
 Defective outdoor fan motor

Short circuit
 Defective radiation fin thermistor
 Disconnection of connector
 Defective outdoor unit PCB

Silicone grease not applied properly on the radiation fin after replacing the outdoor unit PCB
A B
°C °F °C °F
09/12 class 99 210.2 70 158
18 class 100 212 57 134.6