Samsung ACH1800E Technical Manual - page 157
Other manuals for ACH1800E:
Owner's Instructions Manual, Service Manual
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SAMSUNG
TROUBLE SHOOTING & ERROR MODE
7
Fault Diagnosis by Symptom
(Cont.)
● EC09 : When the trouble is found on the part related to the wireless receiving board of the indoor
unit.
YES
NO
NO
NO
YES
YES
NO
NO
NO
NO
Insert correctly
Mis-insertion of CN9?
Wire shorted?
LED direct/reverse direction check?
LED direct/reverse direction check?
Check pin no.1 of CN9 while pressing
SW91 : DC 0V?
Replace after check of indoor unit main PCB
Replace the wireless receiving board
- Defect of wireless remote controller PCB
- Defect of wireless remote controller receiving board PCB
- Indoor unit PCB defect
Check point :