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!
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 undercut /
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 thunder
storms
Have there been lightning strikes
in the area recently?
Switch off the mains protection
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 button?
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&transmitter unit
in the shade
Electromagnetic fields are
interfering with transmission
Does it function after removing
potential fault sources?
Signal is not transmitted when
interference sources are
operational
Button on remote control jammed
/ two buttons pressed at same
time
Does the “Send” symbol appear
on the display?
Release the button / press only
one button
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 inlet / 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 up
Is the cooling/heating symbol
activated in 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
Leaking refrigerant circuit
Are there signs of frost
on the fins of the indoor unit?
Repair by specialist
Condensation is leaking out
Collection container drainage pipe
blocked / damaged
Is unrestricted condensation
discharge ensured?
Cleaning of drain pipe and
collector reservoir.
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
condensation pipe
Has the condensation pipe been
laid on a slope and is not blocked?
Lay the condensation pipe on a
slope and clean if necessary
Condensation does not drain off
Are the condensation lines
unblocked and laid on a slope? Are
the condensation pump and float
switch functioning correctly?
Install the condensation pipe on a
slope and clean if necessary / is the
float switch or the condensation
pump defective?
Fault
REMKO ML...DC
14
Содержание ML 262 DC
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