Samsung ACH1800E, Service Manual

Page: 97 / 150

■
EC10 : When the trouble is found on the part related to the wired remote controller.
(single operation)
6-10 Samsung Electronics
Trouble Shooting
Check point :
- 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
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?
00152-TSHOO-9 2/1/01 2:00 PM Page 6-10