REMKO RXD Series - Manual (Page 14)

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. For installations with an indoor unit and outdoor component, refer to the chapter "Troubleshooting
and customer service" in both manuals. 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
Power outage, undervoltage,
defective mains fuse / main circuit
breaker switched off
Are all other electrical installations
functioning correctly?
Check voltage, possible wait until
turned on again.
Damaged mains cable
Are all other electrical installations
functioning correctly?
Repair by a specialist
Waiting time after switch-on too short Have approx. 5 minutes
elapsed since the restart?
Schedule longer waiting periods
Temperature outside operating range.
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
Overvoltages caused by thunder
storms
Has there recently been lightning?
Switch off the mains breaker 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 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 when switching off
possible sources of interference?
Signal is not transmitted when
interference sources are operational
Button in remote control jammed /
two buttons pressed at same time
Does the “Send” symbol appear on
the display?
Release the button / only press one
button
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 cooling / heating
performance
Filter is unclean / air inlet / outlet
blocked by foreign items
Have the filters been cleaned? Clean the filters
Windows and doors open. Heating/
cooling output increases
Have there been any constructional /
application-related changes?
Close windows and doors / install
additional units
Neither cooling nor heating mode has
been set
Does the cooling symbol appear on
the display?
Correct the settings for the unit
Fins on outdoor component blocked
by foreign items
Is the fan on the outdoor component
running? 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
Outdoor component iced up
Check outdoor component. Has
the cassette sensor on the outdoor
component been correctly positioned?
De-ice and fit the sensor at the point
where the most ice forms
Condensation discharge
on unit
Drainage pipe on collection container
clogged / damaged
Can the condensation drain off
without any obstruction?
Clean the drainage pipe and collection
container
Faulty external condensation pump
or float
Is the collection tray full of water and
the pump not running?
Call out a specialist to replace the
pump
Condensation has not drained away
and has collected in the condensation
pipe
Is there a steady fall on the
condensation pipe? Check there is no
blockage in the pipe.
Ensure there is a fall when laying the
condensation pipe and clean the pipe.
Condensation does not drain off
Are the condensation pipes unblocked
and is there a steady fall? Are the
condensation pump and float switch
functioning correctly?
The condensation pipe must have
a fall. If necessary, clean the pipe. A
faulty condensation pump and float
switch should be replaced.
Float is stuck or jammed due to
excessive dirt.
Are the LEDs on the receiver unit of
the indoor unit flashing?
Should be cleaned by specialist firm
Malfunction
Icing up of
unit
In conjunction with RXM:
Heating/automatic mode set
Check mode setting Set cooling mode
REMKO RXD
14