Phenomenon
Cooling (heating) effect is not
good
Odours are emitted.
Air conditioner does suddenly
not operate normally.
Outdoor unit has vapour.
"Water flowing" noise.
Cracking noise.
Check items
Is the voltage is too low?
Is the filter dirty?
Set temperature is in proper
range?
Door and window are open?
Whether there is odour source,
such as furniture and cigarette,
etc.
Whether there is interfer-
ence, such as thunder, wireless
devices, etc.
Is the heating mode is turned
on?
Air conditioner is turned on or
turned off just now?
Air conditioner is turned on or
turned off just now?
Solution
Wait until the voltage resumes
normal.
Clean the filter.
Adjust temperature to proper
range.
Close door and window.
Eliminate the odour source.
Clean the filter.
Disconnect power, put back
power, and then turn on the unit
again.
During defrosting under heating
mode, it may generate vapour,
which is a normal phenomenon.
The noise is the sound of refriger-
ant flowing inside the unit, which
is a normal phenomenon.
This is the sound of friction caused
by expansion and/or contraction
of panel or other parts due to the
change of temperature.
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