55
Phenomenon
Check items
Solution
Cooling (heating) effect is not
good
Is the voltage is too low?
Wait until the voltage resumes
normal.
Is the filter dirty?
Clean the filter.
Set temperature is in proper
range?
Adjust temperature to proper
range.
Door and window are open?
Close door and window.
Odours are emitted.
Whether there is odour source,
such as furniture and cigarette,
etc.
Eliminate the odour source.
Clean the filter.
Air conditioner does suddenly
not operate normally.
Whether there is interference,
such as thunder, wireless
devices, etc.
Disconnect power, put back
power, and then turn on the unit
again.
Outdoor unit has vapour.
Is the heating mode is turned
on?
During defrosting under heating
mode, it may gener-ate vapor,
which is a normal phenomenon.
“Water flowing” noise.
Air conditioner is turned on or
turned off just now?
The noise is the sound of
refrigerant flowing inside the unit,
which is a normal phenomenon.
Cracking noise.
Air conditioner is turned on or
turned off just now?
This is the sound of friction caused
by expansion and/or contraction
of panel or other parts due to the
change of temperature.
