Check code
●Diagnosis of defects
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards
Diagnosis
Remedy
6831(E0/E4)
6834(E0/E4)
MA communication receive error
Chart 2 of 2
No abnormality
It might be caused by an external noise, so
check the transmission line to remove the
factor(s).
No
Yes
83
OCH634C
Is the wiring connected
properly, meeting the condition?
Connect the wiring properly as specified in
the chapter "Electrical Work" in the indoor
unit Installation Manual.
Refer to the chapter
"Electrical Work".
Continued from the previous page.