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Are the wiring and the piping correct?
The unit may break down or some
components may be burnt out.
Has the unit been earthed reliably?
There may be a danger of electric shock.
Does the wire meet the regulated
requirement?
The unit may break down or the
component may be burnt out.
Is there any obstacle at the air
inlet/outlet
of the indoor/outdoor unit?
The cooling (heating) capacity may be
poor.
Have the length of the refrigerant pipe
and
the
refrigerant
charge
been
recorded?
It may be hard to know the exact
refrigerant charge.
(4) Trial Running
1) Check before the Trial Running
a) Check if the appearance of the unit and the piping system are damaged
during the transportation.
b) Check if the wiring terminals of the electronic component are secure.
c) heck if the rotation direction of the fan motor is right.
d) Check if all valves in the system are fully opened.
2) Trial Running
a) The trial running should be carried out by the professionally skilled
personnel on the premise that all items listed above are in normal
conditions.
b) Let the unit energized and switch the wired controller or the remoter
controller to “ON”.
c) The fan motor and compressor of the outdoor unit will run automatically in
one minute.
d) If there is some unusual sound after the compressor is started, turn off the
unit for an immediate check.
