AB
Inspection of the drive. The drum will rotate clockwise for 10 seconds, then it will stop for 2
seconds, rotate counterclockwise for 10 seconds, stop for 2 seconds, etc.
4.6 Fan motor
SFH
The drum motor will be actuated for 2 minutes. The process air fan also runs on the axle of the
drum motor.
AB
The process air fan will be actuated for 2 minutes.
4.7 Moisture measurement
By applying a short circuit between the electrodes at the inside of the drum front, the moisture
measurement function can be tested.
- Open door and insert a door locking latch into the door lock.
- Start the moisture measurement test programme. The display shows an increasing value.
- Induce a short circuit. The value will decrease again.
- Remove the short circuit. The value will start to increase again.
After 2 minutes the test programme is exited.
4.8 Operating buttons
When operating a button, the corresponding touch value is shown in a green field. The test
programme is exited 10 seconds after the last push of a button.
4.9 Self-cleaning
SFH HP and AB HP
Pumping up in the condensate container, cleaning of the front heat exchanger (condensate drip-
off) and pumping the condensate out of the device is tested.
First, 3.0 litres of water are added to the bottom assembly via the lint filter in the door opening,
where the water flows into the condensate pan after flowing through filter C (only MFH).
The condensate pump switches on, as soon as the condensate electrode is submerged in water.
After that, close the door and start test programme.
The water from the bottom assembly is pumped up within 90 seconds (the
condensate tank overflows after 1.9 litres and the excess water flows back into the bottom
assembly).
Next, the Y-valve is activated and stays open until the end of the programme.
After 60 seconds switchover time, the condensate pump starts and the rinse valve opens for 5
seconds (knocking noise at the solenoid).
The water flows downwards from the upper container through the front heat exchanger (heat
pump's vaporiser unit) and removes any pieces of fluff from the entire surface of the heat
exchanger.
The plinth panel with the filter C can be opened to observe the dripping
(only AB). The condensate is pumped out of the bottom assembly into the drainage hose within
90 seconds.
For the pump performance when pumping out, one measures the time required to pump back out
the 3 litres poured in at the beginning, i.e. the time interval between the knocking noise occurring
and the moment in time, when the condensate pump sucks in air and the water in the condensate
hose starts to swing back and forth.
(The allocated time is approx. 30 to 70 seconds, depending on the level of the condensate hose.)
