Haier AB28NACBEA - 10.2 Trouble Shooting - Detailed for engineer

10.2 Trouble Shooting - Detailed for engineer
Malfunction flow chart: analyze and diagnose
If the air-condition fails to cooling or heating function and other functions, please check
the system as follows:

1.Cooling 
Y
change the designed
TEMP.
replacing compressor
superaddition condensate
clear the filter
enact fan speed of
high or middle speed
airiness circle
improperly
heat insulation of condensate
pipeline between indoor unit
and outdoor unit is normal
N
N
compressor fault
quantity of condensate
charge is not enough
fan speed at
low-speed
air entrance filter
obstruct
Y
Y
Y
Y
condensate
flowage failure
fails in cooling
begining
N
N
fault in 4-way vavle
the cooling load
beyond the allowable
arange
the enactment TEMP.
right or not
Y
Y
Y
insulate the two
pipeline respective
redesign the TEMP.
change the
4-way vavle
use arange is right
or not
Y
Figure 7-1
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