Communication Error Or Malfunction - Samsung MWR-WE10 Service Manual

4-2-2 Communication Error or Malfunction

Is the ASS'Y PBA (DB93-11243A)
communication cable
properly connected?
Is the resistance between
the 2 terminals of ASS'Y PBA (DB93-11243A)
C302 at least 200KΩ?
Is the resistance between
the upper part of ASS'Y PBA (DB93-11243A)
C302 and GND at least 100KΩ?
Is the resistance between
the lower part of ASS'Y PBA (DB93-11243A)
C302 and GND at least 100KΩ?
Check the communication of the indoor unit
connected to wired remote control (this is not a
problem with the wired remote control).
Samsung Electronics
Start
Yes
Yes
Yes
Yes
End
Check the connection status of the
No
communication cable (F3, F4) and ASS'Y PBA
No
Change ASS'Y PBA (DB93-11243A)
No
Change ASS'Y PBA (DB93-11243A)
No
Change ASS'Y PBA (DB93-11243A)
Troubleshooting
(DB93-11243A).
GND
200KΩ
GND
100KΩ
GND
100KΩ
4-4