Troubleshooting and customer service
The units and components are manufactured using state-of-the-art production methods and tested several times
to verify their correct function. However, 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 function checks have
been performed!
Fault
Possible cause
Checks
Remedial measures
The unit does not start
or switches itself off
continually.
Power outage, undervoltage,
defective mains fuse / main switch
in OFF position
Are all other electrical
installations functioning correctly?
Check voltage
if necessary wait until turned on
again
Damaged mains cable
Are all other electrical
installations functioning correctly? Repair by a specialist
Wait time after switching on is
too short
Have approx. 5 minutes
elapsed since the restart?
Schedule longer waiting
periods
Working temperature fallen below
/ exceeded
Are the fans in the indoor unit
and outdoor component working
correctly?
Take into account the temperature
range for the indoor unit and
outdoor component
Electrical surges caused by
thunderstorms
Have there been lightning strikes
in the area recently?
Switch off the mains fuse and
switch it on again /
have it inspected by a specialist
Fault in external
condensation pump
Did the pump shut down due to
a fault?
Check and if necessary clean the
pump
The unit does not respond
to the remote control
Transmission distance too far /
receiver affected by interference
Does the indoor unit beep when
pressing a key?
Reduce the distance to less than
6 m or change position
Defective remote control
Is the unit running in manual
mode?
Replace the remote control
Receiver or transmitter unit
exposed to excessive solar
radiation
Does it function correctly in the
shade?
Place the receiver and/or
transmitter unit in the shade
Electromagnetic fields are
interfering with transmission
Does it function after removing
potential sources of interference?
Signal is not transmitted when
interference sources are
operational
Key on remote control jammed /
two keys pressed at same time
Does the "Transmitting” symbol
appear on the display?
Release the key / only press one
key
Batteries in remote control are flat
Have new batteries been inserted?
Is the display incomplete?
Insert new batteries
The unit is running with
reduced or without
cooling or heating output
Filter is unclean / air intake /
outlet blocked by foreign objects
Have the filters been cleaned?
Clean the filters
Windows and doors open.
Heating/cooling loads increased
Have there been any
constructional /
application-related changes?
Close windows and doors / install
additional units
Neither cooling nor heating mode
has been set
Is the cooling/heating symbol
activated on the display?
Correct the settings for the unit
Fins on outdoor component
blocked by foreign objects
Is the fan on the outdoor
component running
and are the fins unobstructed?
Check the fan or winter controller,
reduce the air resistance
Are there signs of frost
on the fins of the indoor unit?
Leaking refrigerant circuit
Repair by specialist
Condensation is leaking out
Collecting tank drainage pipe
blocked / damaged
Is unrestricted condensation
discharge ensured?
Clean the drainage pipe
and collecting tank
Faulty external condensation
pump or float
Is the condensation tray full
and the pump running?
Call out a specialist to replace the
pump
Condensation has collected in the
condensate line
Has the condensate line been laid
on a slope and is it not blocked?
Lay the condensate line on a slope
and clean if necessary
Condensation does not drain off
Are the condensate lines unblocked
and laid on a slope? Are the
condensation pump and float
switch functioning correctly?
Install the condensate line on
a slope and clean if necessary
/ if the float switch or the
condensation pump is defective,
have it replaced
Malfunctions
REMKO RXT...DC
32
