Haier AV08NMSETA Service Manual page 50

※ 1
If voltage among
No
A,B,C on wired
controller is AC 14V
Yes
Wiring between indoors and
Wired controller
wired controller is wrong
PCB abnormal
※ 2
Heating mode in priority,
the non-prior mode
(cooling) and the mode
are different
Yes
Normal
If voltage between
No
A and B on indoor
terminal block is
AC14V
Yes
on indoor PCB is light
If CN23 on master unit
1. Indoor transformer abnormal
2. Wiring of indoor PCB is
damaged or the port is not
Indoor groups faulty
No
1. Indoor PCB abnormal
2. Wired controller abnormal
48 48
If voltage
No
between L and N
on indoor terminal
block is AC 220V
Yes
Check the abnormal feason
No
If LED (green, red)
1. Indoor transformer abnormal
Yes
2. Indoor PCB abnormal
No
is connected
Yes
inserted well
Check indoor
power cable
Yes
If indoor fuse is normal
No
Connect CN23