2
3
Phenomenon
Check items
Solution
Odours are
emitted
● Whether there
’s odour source,
such as furniture and cigarette,
etc.
● Eliminate the odour source.
● Clean the filte
r.
Air conditioner
operates nor-
mally suddenly
● Whether there
’s interference,
such as thunder, wireless
devices, etc.
● Disconnect powe
r, put back
power, and then turn on the
unit again.
Outdoor
unit has
vapor
● Heating mode is turned on?
（
Only apply to heat pump model
）
● During defrosting under he-
ating mode, it may generate
vapor, which is a normal
phenomenon.
“
W
a t e r
flowing”
noise
●
Air conditioner is turned on or
turned of
f 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 of
f 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.
Malfunction analysis
