SiBE041012_B
Troubleshooting
Service Diagnosis
91
4.17 Four Way Valve Abnormality
Error Code
EA
Method of Error
Detection
The room temperature thermistor and the indoor heat exchanger thermistor are checked if they
function within their normal ranges in each operation mode.
Error Decision
Conditions
A following condition continues over 1 ~ 10 minutes (depending on the model) after operating
for 5 ~ 10 minutes (depending on the model).
Cooling / Dry
(room thermistor temp. – indoor heat exchanger temp.) < –5°C
Heating
(indoor heat exchanger temp. – room thermistor temp.) < –5°C
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 four way valve coil
Defective four way valve, coil, or harness
Defective outdoor unit PCB
Defective thermistor
Refrigerant shortage
Water mixed in refrigerant
Defective stop valve
