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Troubleshooting and customer service
The equipment and components are manufactured using state-of-the-art production methods and tested several
times to verify their correct function. If malfunctions should occur, please check the functions as detailed in the
list below. Please inform your dealer if the unit is still not working correctly after all the functional checks have
been performed!
Malfunction
Fault
The unit does not start
or switches itself off
The unit does not respond
to the remote control
The unit is running
but only provides
reduced cooling or heating
performance
Condensation is leaking out
Possible cause
Power outage, undervoltage,
defective mains fuse / main circuit
breaker switched off
Damaged mains cable
Waiting time after switch-on too
short
Temperate outside operating
temperature range
Overvoltages caused by thunder
storms
Fault in external condensation
pump
Transmission distance too far /
receiver affected by interference
Defective remote control
Receiver or transmitter unit
exposed to excessive solar
radiation
Electromagnetic fields are
interfering with transmission
Button on remote control jammed /
two buttons pressed at same time
Batteries in remote control are flat
Filter is unclean / air inlet / outlet
blocked by foreign items
Windows and doors open.
Heating/cooling output increases
Neither cooling nor heating mode
has been set
Fins on outdoor component
blocked by foreign items
Leaking refrigerant circuit
of the collection container
drainage pipe Blocked / damaged
Faulty external condensation
pump or float
Condensation has not drained
away and has collected in the
condensation pipe
Condensation does not drain off
Checks
Are all other electrical installations
functioning correctly?
Are all other electrical installations
functioning correctly?
Have approx. 5 minutes elapsed
since the restart?
Are the fans in the indoor unit
and outside component working
correctly?
Has there recently been lightning?
Did the pump shut down due to
a fault?
Does the indoor unit beep when
pressing a button?
Is the unit running in manual
mode?
Does it function correctly in the
shade?
Does it function when
switching off possible sources of
interference?
Does the "Send" symbol appear
on the display?
Have new batteries been inserted?
Is the display incomplete?
Have the filters been cleaned?
Have there been any
constructional /
application-related changes?
Is the cooling/heating symbol
shown on the display?
Is the fan on the outdoor
component running
and are the fins unobstructed?
Are there signs of frost on the fins
of the indoor unit?
Is unrestricted condensation
discharge ensured?
Is the condensation tray full and
the pump running?
Is there a steady fall on the
condensation pipe? Check there is
no blockage in the pipe.
Are the condensation pipes
unblocked and is there a steady
fall? Are the condensation pump
and float switch functioning
correctly?
Remedial measures
Check voltage,
possible wait until turned on
again.
Repair by a certified service centre
Plan for longer waiting period
Take into account the temperature
range for the indoor unit and
outside component
Switch off the mains protection
and switch it back on / have it
checked by a specialist
Check and if necessary clean the
pump
Reduce the distance to less than 6
m or change position
Replace the remote control
Place the receiver & transmitter
unit in the shade
Signal is not transmitted
when interference sources are
operational
Release the button / only press
one button
Insert new batteries
Clean the filters
Close windows and doors / install
additional units
Correct the settings for the unit
Check the fan or winter controller,
reduce the air resistance
Repair by specialist
Cleaning of drain pipe and
collector reservoir.
Call out a specialist to replace the
pump
The condensation pipe must have a
fall. If necessary, clean the pipe
The condensation pipe must have
a fall. If necessary, clean the pipe.
A faulty condensation pump and
float switch should be replaced.
15
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