9
Troubleshooting and customer service
The unit and components are manufactured using state-of-the-art production methods and tested several
times to verify that they function correctly. However, if malfunctions should occur, please check the functions
as detailed in the list below. For systems with an indoor unit and outdoor unit, refer to the chapter "Trouble-
shooting and customer service" in both operating manuals. Please inform your dealer if the unit is still not
working correctly after all function checks have been performed!
Operational malfunctions
Malfunction
Possible causes
Remedial measures
The unit does not start or switches
itself off
Power failure
Check the voltage and if neces-
sary, wait for it to come back on
Defective mains fuse
Arrange to have exchanged
Damaged power supply
Repair by specialist firm
Switch-off delay (timer function)
Housing cover (rear of unit)
opened
Close the housing cover
The unit cannot be operated
Key lock active
Deactivate key lock
Operating panels do not light up
Sleep function active
Deactivate sleep function
Air quality display remains red
even after long periods of opera-
tion
Emission source near the sensor
Remove emission source or relo-
cate unit
DANGER!
Work on the electrical equipment must only be
conducted by an authorised specialist!
REMKO LRM series
20
