Daikin 2MXS-W Series User Manual

SiUS122226E Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis 219
7.19 Radiation Fin Temperature Rise
Error Code L4
Outdoor Unit LED
Display
A j 1 h 2 h 3 h 4 i 5 h
Method of Error
Detection
A radiation fin temperature rise is detected by checking the radiation fin temperature with the
compressor on.
Error Decision
Conditions
 The radiation fin temperature with the compressor on is above A.
 The error is cleared when the 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
2/3/4MXS 5MXS 2/3MXL(H) 4MXL(H)
°C °F °C °F °C °F °C °F
A 90 194 70 158 90 194 70 158
B 85 185 64 147.2 85 185 64 147.2

Daikin 2MXS-W Series Specifications

General

Brand	Daikin
Model	2MXS-W Series
Category	Air Conditioner
Language	English