Carrier 40GJB Owner's Manual page 14

Malfunction analysis
Phenomenon
Odours are
such as furniture and cigarette,
emitted
etc.
Air conditio-
ner operates such as thunder, wireless
abnormally devices, etc.
" ater
Air conditioner is turned on or
turned off just now?
noise
Air conditioner is turned on or
Cracking
turned off just now?
noise
Check items
's odour source,
's interference,
13
Solution
r, put back
power, and then turn on the
unit again.
The noise is the sound of
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.