Service manual

Si04-115 Code Indication on The Remote Controller
Service Diagnosis 65
4. Code Indication on The Remote Controller
4.1 Error Codes and Description of Fault
Code
Indication
Description of Problem
System 00 Normal
U4 Signal transmission error (between indoor and outdoor units)
Indoor Unit A1 Faulty indoor unit PCB
A5 Operation halt due to the freeze protection function or high pressure
control
A6 Fan motor or related abnormality
C4 Heat exchanger temperature thermistor abnormality
C9 Room temperature thermistor abnormality
CA Discharge air temperature thermistor abnormality
Outdoor Unit E5 Interrupt due to OL Action
E6 Compressor startup error
E8 Inverter units - Input overcurrent
H8 CT or related abnormality
H9 Outside air thermistor or related abnormality
J3 Discharge pipe temperature thermistor or related abnormality
J6 Heat exchanger temperature thermistor or related abnormality
L5 Inverter units - Output overcurrent