Esc Eev Open Error - Samsung AM040KXMDEH/EU Service Manual

4-3-11 ESC EEV open error (Error Code : E438)
※ Indoor EEV leakage can be easily checked during the cooling operation of one room and during the ventilated operation of stationary
side. (In case it is normal, the EVA In and Out temperatures for the ventilated side may rise.)
※ If cooling operation is operated for low temperature with excessive refrigerant amount, then the DSH may descend.
1. How to check
correctly connected to the PBA?
Is EEV coil correctly connected?
Check the leakage on ESC EEV
Check the leakage on sub-cooler
Check the piping connection
Check the amount of refrigerant
Samsung Electronics
Is the ESC EEV connector
Yes
Yes
Normal
Normal
Check the leakage on
indoor unit EEV
Normal
Connect liquid-gas pipe)
No
Check and connect the connector
No
Check and assemble the coil
Failure
Replace the ESC EEV
Failure
Replace the sub-cooler
Failure
Replace the indoor unit EEV
Re-install the pipe
Troubleshooting
33