Troubleshooting
9-74Samsung Electronics
■
: Indoor unit address setup error of MCU
Outdoor unit display
Indoor unit display Only is flickering.
Judgment method
Causes - Rotary switch for indoor unit address in MCU was overlapped among MCU.
Check the error of outdoor unit
display part and find the address of MCU and
rotary switch for indoor unit address.
Check the address of indoor unit connected
with each above MCU rotary switch for
indoor unit address.
Are not 2 address values the same?
If the error is occurred again after
restarting with a change DIP switch of
MCU and indoor unit address setup,
replace MCU PCB.
Restart after setting 2 indoor unit addresses and
MCU address setup value differently.
No
Yes
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