aeg cafamosa pump running constantly

Hello,
got an aeg cf81. After switching on all 4 green leds flashed.
ventilation did not work. Since the pump did not start I connected it directly to 220V - no
reaction. Since I still have a defective one, I exchanged the pump - with the result that
the pump starts immediately after plugging in the power cable - but no longer switches off - runs
so it runs all the time.
Is there possibly a pressure switch on the machine - or how and what switches the pump off and on again?
I would be grateful for a tip
mfg.
>Jochen

Hello the pump is operated via the LP (power board).
If the pump is now constantly running this error is to be found on the LP.
These pumps do not have a diaphragm pressure switch that switches them.

There is a lawyer here who might be able to help you there.

MfG Chris

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Hello,
I'm not a pronounced law expert. These pumps are controlled by a triac. If the triac is short-circuited, the pump runs continuously. At the EQ devices from Siemens a T40570 is responsible for the control.
There should also be a defective triac on the jurassic board. So the track from the pump connection to the triac exit, the base plate of the triac, has to be tracked down to find the triac.

HWS