Service Manual

SiUS121827E Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis 205
7.7 OL Activation (Compressor Overload)
Error Code E5
Outdoor Unit LED
Display
A j 1 i 2 h 3 i 4 h 5 h
Method of Error
Detection
A compressor overload is detected through compressor OL.
Error Decision
Conditions
 If the error repeats, the system is shut down.
 Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
 Disconnection of discharge pipe thermistor
 Defective discharge pipe thermistor
 Disconnection of connector S40
 Disconnection of 2 terminals of OL (Q1L)
 Defective OL (Q1L)
 Broken OL harness
 Defective electronic expansion valve or coil
 Defective four way valve or coil
 Defective outdoor unit PCB
 Refrigerant shortage
 Water mixed in refrigerant
 Defective stop valve