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.
Power outage, undervoltage,
defective mains fuse / main switch
in OFF position
Are all electrical
installations functioning correctly?
Check the voltage and
if necessary, wait for it to come
back on
Damaged mains cable
Are all electrical
installations functioning correctly? Repair by specialist
Wait time after switching on is
too short
Have approx. 5 minutes
elapsed since the restart?
Schedule longer wait times
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 protection
and switch it back on /
have it checked 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
sources of interference are
operational
Key in remote control jammed /
two keys pressed at same time
Does the “Send” 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 but
only provides reduced or no
cooling or heating
performance.
Filter is unclean / air intake /
outlet blocked by foreign objects
Have the filters been cleaned?
Clean the filters
Doors and windows open.
Heating/cooling output increases
Have structural /
usage modifications been made?
Close windows and doors / install
additional units
Neither cooling nor heating mode
has been set
Is the cooling/heating symbol
shown 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? Are the fins
unobstructed?
Check the fan or winter controller,
reduce the air resistance
Leaking cooling circuit
Are there signs of frost on
the fins of the indoor unit?
Repair by specialist
Condensate is leaking out
Drainage pipe on collection
container clogged / damaged
Is unrestricted condensate
discharge ensured?
Clean the drainage pipe and
collection container
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 an incline and is it
unobstructed?
The condensate line must be on
an incline. If necessary, clean the
line
Condensate does not drain off
Are the condensate lines unblocked
and is there a steady incline?
Are the condensation pump and
float switch functioning correctly?
Install the condensate line on
an incline and clean if necessary
/ if the float switch or the
condensation pump is defective,
have them replaced
Malfunctions
REMKO BL
14
