Haier AU96NFTAHA Service Manual page 76

[96] Contradiction checkout of indoor and outdoor address
Whether the
connection of communication line and
wiring of P, Q terminal connected
is normal
Whether the
communication line is connected to
many outdoor units
Whether the
number of indoor unit connected
to the outdoor unit is normal
Whether the
communication line is connected
to the central controller
Check outdoor I/F PCB, if improper,replace it
Yes
No
Yes
No
No
Modify the wiring connection
Yes
Modify communication line
No
Yes
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