Wiring is correct
No
77
[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
No
No
Yes
Yes
Yes
Yes
If the outdoor unit has been stooped for over 20minutes, recheck the mismatching line
No
Recheck the
mismatching line, check
whether "9A" appears
Whether the
check is conducted as per the
temperature condition
(Table 1)
Check mismatching line as per thecondition as specified in Table 1
*Table 1
Indoor
18~32
18~32
Outdoor
15~43
-10~15
Cool mismatching line
Heat mismatching line
Whether there is other
inspection code
Insufficient refrigerant , mismatchingline, block
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
No
Yes
Repair indoor PMV
No
Yes
No
Yes
Whether the
following sensors are normal. When in cool
house: TC1, TC2, TA pressure sensor. When in
heat: TC1, TC2, TA
Replace the sensor having fault
Whether the wiring is correct
Wiring as per regulation
(Check the function andconduct confirmation throughoutdoor unit mismatching line)
Block, refrigerant pipe
is bent
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