21
Phenomenon Check items Solution
Odours are
emitted
● Whether there’s odour source,
such as furniture and cigarette,
etc.
● Eliminate the odour source.
● Clean the filter.
● Whether there’s interference,
such as thunder, wireless
devices, etc.
● Disconnect power, put back
power, and then turn on the
unit again.
Outdoor
unit has
vapor
● Heating mode is turned on?
● During defrosting under he-
ating mode, it may generate
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.
Malfunction analysis
Air conditioner
operates nor-
mally suddenly
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