Phenomenon Check items Solution
Air conditioner
operates nor-
mally suddenly
● Whether there’s interference,
such as thunder, wireless
devices, etc.
● Disconnect power, put back
power, and then turn on the
unit again.
“Water
noise
● Air conditioner is turned on or
turned off just now?
● The noise is the sound of
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.
Malfunction analysis
30