Haier 1U12BE2ERA Service Manual page 44

Check whether Terminal on the outdoor
mainboard is well inserted.
Is it normal?
YES
Electrify the machine again and turn it
on in the Cool state with the remote
controller. check whether motor can
run？
YES
Measure the voltage between 3 and 6 of
the terminal about 0-5v.
Is it normal?
NO
The motor of the outdoor unit is damaged
and needs replacing.
Reinsert the terminals
NO
NO
Measure the voltage between 1 and 3 of the terminal of
fan motor on the mainboard about DC310V, Measure
the voltage between 3 and 4 of the terminal about
DC15V. Measure the voltage between 5 and 3 of the
terminal about 1-6v.
YES
YES
The mainboard of the outdoor unit is
damaged and needs replacing
42
Is it normal?
NO
Domestic air conditioner
Installations