Samsung ACH1800E Technical Manual - page 158
SAMSUNG | 157
TROUBLE SHOOTING & ERROR MODE
7
Fault Diagnosis by Symptom
(Cont.)
● EC10 : When the trouble is found on the part related to the wired remote controller.
(single operation)
NO
NO
YES
YES
NO
YES
YES
YES
YES
NO
NO
NO
YES
NO
NO
NO
YES
One unit is
installed
Set to "0"
Check the indoor
unit PCB
Connect correctly the R1, R2, R3
Error correction and recheck
CN20
insertion
Is the wired remote
controller energized when the
power is reset?
Is the on/off button command of
wired remote controller reflected
on the set?
When the power is applied
again after removing the power
at the operation on, does the
previous status display on the
wired remote controller
display window?
Check the main PCB of indoor
unit and replace it.
Replace the
wiring
Is the wire of CN15 to
indoor unit terminal
board shorted?
Is CN20 of indoor
unit main PCB
inserted?
More than on indoor
unit mounted on the
wired remote
controller?
Is the address
of indoor unit "0"
Are the terminals R1, R2, R3 of wired
remote controlled connected to the R1, R2,
R3 of indoor unit terminal boards?
Does the error code display?
- Defect of communication line between indoor unit and wired remote controller.
- Output of indoor unit Micom
- Defect of wired remote controller PCB
- Indoor unit PCB defect
Check point :