Troubleshooting - Rotel U791CH1 Mode D'emploi

• TROUBLESHOOTING

Problem
Displays 'E1'
Displays 'E2'
Displays 'E4'
The air conditioner does not
work
The cooling effect is not good
The device is very noisy
The compressor does not
work
o Do not repair or disassemble the air conditioner by yourself. Unqualified repair will
lead to failure of the warranty card, and may cause damage to users or their properties.
o If problems not listed in the table occur or recommended solutions do not work, seek
for professional advice.
Gebrauchsanweisung ○ Mode d'emploi ○ Istruzioni per l'uso ○ Instructions for use
Reasons
Pipe temperature sensor fail-
ure
Room temperature sensor
failure
Anti-freezing protection
There is no electricity
The overflow indicator dis-
plays FL
There is direct sunlight
Doors or windows are open;
there are a lot of people; or in
cooling mode, there are other
sources of heat
The filter screen is dirty
The air inlet or outlet is
blocked
The air conditioning is not
placed on a flat surface
Overheat protection starts
60
Solutions
Check the pipe temperature
sensor and related circuitry.
Check the room temperature
sensor and related circuitry.
The ambient temperature
must exceed 8°C.
Turn it on after connecting it
to a socket with electricity.
Discharge the water inside.
Pull the curtains
Close doors and windows,
and add new air conditioner
Clean or replace the filter
screen
Clear obstructions
Put the air conditioning on a
flat and hard floor (to reduce
noise)
Wait for 3 minutes until the
temperature is lowered, and
then restart the machine