Samsung AVMKH020EA0 Service Manual page 237

8
Troubleshooting
8-2-54. MCU indoor unit address setup error
Outdoor unit display
MCU display
Judgment method
Causes
Check the error of outdoor unit display part
and find a MCU occurring error.
Check the address of indoor unit
connecting with confluence kit and the
address of rotary switch on MCU PCB.
Is not 3 over of rotary switch of
MCU set to the same address?
If the error is occurred after restarting with a change of
confluence kit setup DIP switch of MCU and indoor unit
address setup, replace MCU PCB.
and are displayed alternately.
(Display only MCU)
- W
- Indoor unit connected with confluence kit and setting address was overlapped more than 3.
Yes
No
Restart after setting correctly
the indoor unit address setup
rotary switch of MCU.
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