Can not heating and
cooling.
no refrigerant in system.
Please fill up refrigerant.
refill up refrigerant after
checking the leak source.
Disconnecting valve dosen’t
turn on.
Please turn on disconnecting
valve.
The system is blocked. For
example the strainer or connect
pipe.
Replace this parts which
blocked.
find out the cause ,replace the
motor ,capacitor,PCB,or do
other actions
Noise and vibration
is existent during
running.
electromagnetic noise from
compressor.
resonance between the
compressor and other parts.
Add bumper block or adjust
the position
The indoor and outdoor motor
rusted or electromagnetic noise.
The cross flow fan collides with
the slot basis
The noise of the refrigerant
moving.
Readjust the position of the
H&L pressure pipe.
The screw of outdoor unit is
loose and caused the noise and
vibration.
The bearing of cross flow fan
broke.
The cross flow fan collides with
the foam or sponge
The pipe of outdoor unit contact
with crust
make the pipes well,keep the
suitable space(over 10mm)
The noise come from
synchronous motor, stepper
motor, capacitance,
transformer, reactor.
the indoor and outdoor air
circulation channel is clogged,
which generated noise.
The drain pipe is jammed or
broken.
Clear up the stem or replace a
new pipe.
The installation of evaporator
and water receiving tank is not
in place.