Local room air conditioner CMK 2950
The unit and components are manufactured using state-of-the-art production methods and tested several times to
verify that they function correctly. If malfunctions should occur, please check the unit as detailed in the list below.
Please inform your dealer if the unit is still not working correctly after all the function checks have been performed.
12.0 Troubleshooting and customer service
Operational malfunctions
Malfunction
Possible cause
Remedial measures
The unit does not start or
switches itself off.
Power failure
Check the voltage and if necessary wait for it
to come back on.
Mains fuse faulty.
Master switch off.
Replace the mains fuse.
Switch on the master switch.
Power supply cable damaged.
Repair by specialist firm.
Operational temperature range too low or
exceeded.
Observe operational temperature range 16 to
35 °C.
Internal reservoir full.
Empty reservoir.
The ambient temperature of the unit lies
outside the operating range (16 to 35 °C).
Do not operate the unit outside the operating
range.
The unit works without
or at reduced
cooling capacity.
Exhaust air hose kinked,
extended, routed downwards or blocked.
Ensure that there is a clear path for the exhaust
air.
Filter contamination. Inlet or outlet blower
openings blocked by foreign bodies.
Clean the filter and reinsert it.
Minimum clearances too small.
Observe minimum clearances.
Windows and doors open/
heat load was increased.
Close doors and windows/
reduce heat load.
Negative pressure in the installation room
whilst the unit is operating with wall pass-
through.
Balance out pressure in the installation room.
"Cooling" operating mode is not selected.
Set "Cooling" operating mode.
Unit will be switched by means of the timer
function.
Press "I/0" key again.
Temperature setting too high.
Reduce temperature.
Overvoltage due to local lightning strike.
Switch unit off and separate from the power
supply for 5 mins., then start anew.
The unit does not respond to
the infra-red remote control.
Batteries in the remote control are empty or
the distance to the receiver is too great.
Insert new batteries/reduce distance or change
its location.
After battery exchange, incorrect polarity of
batteries.
Insert the batteries with the correct polarity.
Observe marking.
Condensate discharge on unit.
Unit standing at an angle.
Stand upright and ensure a secure footing.
The stopper for the condensate drain is not
correctly inserted or is damaged.
Insert stopper correctly or replace if necessary.
Error indication by code
Error code
Error description
Remedial measures
E1
Ambient temperature probe defective
Replace probe
E2
Probe, evaporator defective
Replace probe
E5
Control board defective
Replace the control board
17
Содержание CMK 2950
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