Samsung Electronics
■ EC05 : When the trouble is found in the communication related part between indoor unit
and outdoor unit.
- EA of 7-segment of outdoor unit PCB.
- Reservation lamp and filter lamp of wireless receiving board is flickering with 1 Hz.
- Action item when “*A” displays on the wired remote controller.
6-6
Trouble Shooting
Check point :
- Indoor unit
↔ outdoor unit mis-connection
- Indoor unit PCB defect
- Outdoor unit PCB defect
✽ “*” stands for the indoor unit address.
NO
YES
YES
NO
NO
YES
Indoor unit communication norma
The Micom of outdoor unit is operating normally,
check and replace the communication circuit of
outdoor unit and indoor unit.
Do connection correctly and check.
Are the terminals N1,L1,C of indoor unit and outdoor unit
are correctly connected? and is the set power on?
Is the LED of PCB flickering with 16Hz for 250ms and
then repeating the on?
Is the LED of PCB flickering with 16Hz?
Replace the PCB
Duct-ADH1800E-3 4/12/00 5:47 PM Page 6-6
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