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MXZ-SM42NAMHZ Service Manual

ManualsBrandsMitsubishi ManualsCoolingConcealed Duct 4-Zone H2i System - 42,000 BTU Outdoor - 9k + 9k + 12k + 12k Indoor - 18.0 SEER
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103
OCH789
Check code
●Diagnosis of defects
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards
Diagnosis Remedy
6832, 6833
(E3/E5)
MA communication send 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
Is the wiring connected
properly, meeting the condition?
Connect the wiring properly as specied in
the chapter "Electrical Work" in the indoor
unit Installation Manual.
Refer to the chapter
"Electrical Work".
Continued from the previous page.