REMKO ML 260 - Manual (Page 11)

11
Troubleshooting
This unit has been designed based on state-of-the-art manufacturing methods and it has been tested repeatedly to
ensure that it is working properly. However, should problems occur, refer to the following list.
* *
Before any work on the units is performed, they must be disconnected from the power
supply (fuse or repair switch) and secured against being inadvertently switched on!
Should the unit still not work after performing these functional checks, please contact the closest dealer or
REMKO GmbH & Co KG. directly.
Problem Possible cause Check Remedy
The unit does not start
or it switches itself off
automatically. Power failure, power too low Are all other electrical components
working? Check current and wait for the device to start
again
Power fuse / power supply defec-
tive Are all currents for lighting func-
tional? Replace power fuse /
Switch on main switch
Power supply line damaged Are all other electrical components
working? Maintenance by authorised service centre
Amount of time waited after
switching unit on was too short Did approx. 5 minutes elapse after
restarting? Plan for longer waiting periods
Operating temperature too low /
too high Are the fans on the indoor unit and
outdoor unit working? Pay attention to temperature ranges of in-
door unit and outdoor unit
Excess current caused by thun-
derstorms Was there recently lightning in the
region ? Switch the system off and then back on again /
Maintenance by authorised service centre
Problem with the external conden-
sation pump Did the pump switch off due to a
malfunction? Check pump and clean if necessary
Sensors that are defective or not
properly attached Is the indoor unit displaying an er-
ror message? Maintenance by authorised service centre
The indoor unit is not
responding to the re-
mote control. Timer set to “ON” Is the timer set? Clear programming and wait for the unit to
start
Polarity of batteries incorrect after
replacement Is the polarity correct? Insert batteries with the correct polarity
Transmission distance too great /
reception blocked Is there a transmission signal when
the button is pressed? Reduce distance to under 7 m and change
location
Remote control defective Does the unit work in manual
mode? Replace remote control
Too much direct sunlight on the
receiver or transmitter Does the unit work in the shade? Place the transmitter or receiver in the
shade
Electromagnetic fields are disrupt-
ing transmission Does the unit work after potential
causes of disruption have been
eliminated? No signal transmission when sources of dis-
ruption are operated simultaneously
Remote control buttons stuck /
two buttons pressed at once Does the symbol appear on the
display? Unstick button / only press one button
Dead batteries in the remote con-
trol Are the batteries new? Is the dis-
play incomplete? Insert new batteries
Temperature setting too high Is the selected temperature above
room temperature? Reduce selected temperature
The device is either
not cooling at all or
only a little bit. Filter is dirty/ intake / outlet open-
ing is blocked by foreign bodies Have the filters been cleaned? Clean filters
Windows and doors are opened /
increased amount of warm air or
cold air Have there been changes in de-
sign or use? Close the windows and doors / mount addi-
tional systems
Cool mode is not set Does the Cool symbol (COOL)
appear on the display? Correct the unit settings
Plate fins of the outer unit are
blocked by foreign bodies Is the fan of the outdoor unit working,
are the plate fin exchangers moving
freely? Check the fan or winter control mechanism,
reduce air resistance
Cooling cycle is not leak proof Is there a build-up of frost visible
on the plate fin exchangers of the
indoor unit? Maintenance by authorised service centre
Condensation water is
leaking from the indoor
unit. The drainage pipe of the conden-
sation collector is blocked / dam-
aged Can condensation flow freely? Clean the drainage pipe and the condensa-
tion collector
External condensation pump or
float regulator is defective Is the collector filled with water and
the pump is not working? Have pump checked by authorised service
centre
Thermal or wind load has in-
creased Have there been changes in de-
sign or use? Take corresponding measures to decrease
the thermal or wind load
Heat cannot be expelled Is the fan on the outdoor unit work-
ing? Check the fan / winter regulation mechanism