22
Fault Analysis and Error Messages
If the unit does not turn on (and the display of the remote control and the LEDs on the
PCB are also off) there is probably no power.
It may also be that the internal fuse is blown, it sits next to the circuit board in a plastic housing.
If the unit does not turn on and there is power on (LED on the board flashes and the
display of the remote control unit provides E: 01) it is most likely to be 2 of the 3 phases which
are to be changed together, which of the three does not matter.
If the circuit breaker shuts off or the unit should start cooling this is probably a wrong value or the
system has been incorrectly installed. Check the correct information in the Technical Specifications
(page 8).
If the unit makes strange noises or is always cooling check the pressure gauge; or to ensure that
nothing more is going on, check right in the middle of the window and see if the outdoor
temperature (C: 07) does not exceed 30 ℃ . Should this be the case, make sure the outdoor unit can
get to colder air and check that the pointer on the gauge drops.
If water drips from the sides of the unit has a problem with the condensation drain. Check with a
spirit level that the unit has enough slope (see section assembly). It may also be that the
condensation hose has too many bends or restrictions.
Temperature sensors in the unit.
There are seven temperature sensors connected to the indoor unit. These can be read by briefly
pressing the【S】key and navigated with the arrow keys.
Typical values of these sensors are;
C: 01 = Heatsink temperature 5 ° C - 15 ° C
C: 02 = Temp. refrigerant from outdoor unit (Liquid / return) 23 ° C - 50 ° C
C: 03 = Room temperature 2-40g or dual temp.
C: 04 = Temperature (cold) air blown 8-16 ° C lower, C: 05
C: 05 = Temperature (warm) air sucked in is almost equal to room temperature.
C: 06 = Temperature low pressure (for compressor) almost equal to C: 01
C: 07 = Outside air temperature (for outdoor unit) Max 40 ° C
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