Haier AU96NFTAHA Service Manual page 80

[9A] Mismatching line and wrong connection of indoor unit group
Whether the
outdoor unit has been stopped for over
20 minutes before checking
mismatching line
Yes
Whether the
check is conducted as per the
temperature condition
(Table 1)
Yes
Whether there is other
inspection code
Yes
Confirm inspection code, after eliminating the reason, recheckmismatching line
[9F] Judgment of insufficient refrigerant cycle
Whether
indoor PMV is normal
1.Connection of the connectors; 2.Wiring; 3.Winding;
4.Valve body; 5.Indoor PCB
Whether the
following sensors are normal. When in cool
house: TC1, TC2, TA pressure sensor. When in
heat: TC1, TC2, TA
Whether the wiring is correct
Block, refrigerant pipe
is bent
No
Yes
*Table 1
Indoor
Outdoor
Yes
Yes
(Check the function andconduct confirmation throughoutdoor unit mismatching line)
Yes
If the outdoor unit has been stooped for over 20minutes, recheck the mi
Recheck the
mismatching line, check
whether "9A" appears
No Check mismatching line as per thecondition as spe
Cool mismatching line Heat mismatching line
18~32
15~43
No
Insufficient refrigerant , mismatchingline, block
No
Repair indoor PMV
No
Replace the sensor having fault
No
Wiring as per regulation
77
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No
Wiring is correct
18~32
-10~15