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