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Jura 401

Power supply pump

gerleflic

May 14, 2022 09:21 am

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Coffee drinker

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Posts: 7

Member No.: 6439

Joined: December 27, 2009

My old Jura Impressa 401 (similar to S series) makes problems.

There is not enough water coming to the hot water or/and coffee spout.

Everything is tight and the pump is new.

When I took a measurement, I found that the pump is not supplied with 230 V, but only with about 153 V.

Does anyone have any idea, as I assume that the pump should also be supplied with 230V instead of 153V.

Am grateful for any clue (triac, octocoupler, ... anything else defective?).

Maybe someone knows which component is responsible for the power supply of the pump.

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Schlawi

May 14, 2022 10:23 am

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Expert

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The triac X1 or X2 is responsible for the pump. It is best to follow the pump line on the circuit board at connector CM1B. It should go to the middle pin of the triac. Then you have the triac. I think it is the X2.

gerleflic

May 14, 2022 11:46 am

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Coffee drinker

Group: Mitglieder

Posts: 7

Member No.: 6439

Joined: December 27, 2009

QUOTE (Schlawi @ Saturday, 14 May 2022, 09:23 PM)
The triac X1 or X2 is responsible for the pump. Best to follow the line of the pump on the board at connector CM1B. Should go to the middle pin of the triac. Then you have the triac. I think it is the X2.


Great and first of all thank you. I will test it later.

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