Bestron AAC9000, Instruction Manual, Page: 48 / 75

48
EN
PROBLEM SOLVING
Problem Possible cause Advised solution
The air-
conditioning is not
functioning
There is no electricity
The room temperature is
lower than the set cooling
temperature
In the cooling mode: the
room temperature is too low
or too high
In the dehumidifying mode:
the room temperature is too
low
The device is standing in
sunlight
Check whether the socket the device is connected
to, has electricity
Change the set cooling temperature
The device optimally functions at a room
temperature between 7°C and 35°C
The device optimally functions at a room
temperature of 17°C and higher
Move the device into the shade
Cooling is not
functioning
properly
Doors or windows are open
Central heating or other
sources of heat
The filter is dirty or clogged
The inlets or outlets are
blocked
Close open doors and windows
Turn off the heating
Clean the filter
Remove obstructions
The device makes
a lot of noise
The device is not placed on a
stable and flat surface
Place the device on a stable and flat surface
Compressor does
not function
The device is overheated Wait a couple of minutes until the temperature has
lowered and restart the device
Remote control
does not work
The batteries are empty
The distance between device
and remote control is too big
The remote control is not
aimed at the device
Replace the batteries
Stand closer to the device
Aim the remote control at the device
Display indicates
‘E1’
The outlet temperature
sensor does not function
properly
Have the outlet temperature sensor checked by a
professional
Display indicates
‘E2’
The room temperature
sensor does not function
properly
Have the room temperature sensor and switches
checked by a professional