Haier AU282AHBEA Service Manual page 297

4) Freezing in cooling cycle
Start
Is pipe temperature
sensor in good
condition?
yes
if filter, indoor
heat exchanger
are dirty
no
if indoor fan motor is normal?
speed is too low or not run?
no
if failure disappear after
PCB is changed
no
indoor/outdoor
temp. too low
5) Overload in cooling mode
start
Is pipe temperature
sensor in good
condition?
yes
if outdoor heat
exchanger are
dirty
no
if outdoor fan motor is normal?
speed is too low or not run?
no
if failure disappear after
PCB is changed
no
indoor/outdoor
temp. too high
no
change pipe temp.
sensor
yes
cleaning
yes
repair fan motor or fan capacitor
yes
indoor PCB failure
no
change pipe temp.
sensor
yes
cleaning
yes
repair fan motor or fan capacitor
yes
outdoor PCB failure
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