Samsung AM072/096/120/144FXVAFH, Service Manual

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Troubleshooting
4-82 Samsung Electronics
ESC EEV Open error
(cont.)
1. How to check
Check the refrigerant amount
No
Reconnect connector
Is ESC EEV connector accurately connected to PCB?
Yes
No
Reassemble the coil
Is EEV coil accurately installed?
Yes
Breakdown
Replace Intercooler
Check the Intercooler leakage.
Normal
Check the indoor unit EEV leakage
Breakdown
Replace indoor unit EEV
Normal
Reinstall pipe
Check the connection for indoor unit pipe
(Connect liquid pipe-gas pipe directly)
Breakdown
Replace ESC EEV
Check the ESC EEV leakage.
Normal
※ Indoor unit EEV leakage confirmation (In case it is normal, the EVA In and Out temperatures for the fan operation may rise.)
∙ Operate cooling in one room any of the selected indoor unit. (Remainder indoor unit can confirm simply at the fan operation.)
※
In case it is normal, the EVA In /Out temperature of indoor unit that is on fan operation within 5 minutes is ascending to value that approaching in
indoor temperature. (Setting as opposed to the indoor unit fan operation and cooling operation functions of the indoor unit, and then check again.)
※ If cooling operation is operated for low temperature with excessive refrigerant amount, then the DSH may descend.
غ
AM038/048/055KXWD
✳✳
Outdoor unit display
Indoorunit display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter 18
℃
21
℃
Turbo 24
℃
27
℃
× ×
ስ ስ ስ
×
ስ ስ ስ
× ×
ስ ስ ስ
※ ● : ON ◑ : Flash × : OFF
Judgment Method ∙ DSH<10
℃
, ESC EEV=0step, satisfaction more than 30minutes
Cause of problem
∙ ESC EEV and Intercooler leakage, excessive refrigerant amount, outdoor check valve inserted opposite.
∙ Indoor unit EEV leakage, direct connection between Indoor side liquid pipe and the gas pipe.