Neff S5443X2GB/42 dishwasher not progressing after filling

[DorsetDave]

Hello,
Hopefully someone can give me some guidance to my problem with this dishwasher.

Dishwasher was working fine then suddenly decided not to wash.

I have checked the following after removing left right and front panels.
Water enters machine OK – can see in the LH water matrix. Have also ohm tested the solenoid and appears within recommended norms.
Have cleaned out the matrix and all the floats so that they float freely.
Have ensured that the bottom of the machine is dry so that anti-flood does not kick in.
Have cleaned the tube between the water matrix/float and the main chamber.
Have tested the anti-flood manually and water is drained.
Have tested the ohms across the drain pump and appeared within published norms.
I have checked for blockages in the drain pipe, at the sink and downstream – all appears OK.
Have checked the drain impeller for blockages and it is free to move.
Have checked that the main motor (the one on the left looking through the RH side is free to rotate.
So my current investigations are based around the test mode/cycle but I am not 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} sure on the sequence. I have the following buttons and lights
ON/OFF, End light, Salt and Rinse lights, 65 wash,50 wash,35 wash and RINSE.
Holding the 65 and 35 I then pressed the ON/OFF to ON – 50 illuminates so released the buttons and 35 flashes. Pressed 35 then nothing.

Can anyone provide any further diagnostic information please?

Thank you.

[Martin]

Re: Neff S5443X2GB/42 dishwasher not progressing after filli

Once it fills and the pressure chamber (below the fill matrix) operates the microswitch then the circulation pump motor should start. From your detailed post it suggests to me the motor is not working at all rather than trying to start. So you need to concentrate on the wiring to the motor, the motor windings or that the triac on the main control board that operates the motor circuit has blown?

[DorsetDave]

Re: Neff S5443X2GB/42 dishwasher not progressing after filli

Martin,
Thank you for that information. I will take a look to see if I can find out any more with regard to the circulation motor. So that I am looking in the correct place, which is the circulation pump, is that the one on the left as I look through the RH side? Is that the one also known as the main wash motor, or is the circulation one different?
Regards

[Martin]

Re: Neff S5443X2GB/42 dishwasher not progressing after filli

The circulating pump (aka wash pump) is the large pump, front right hand side.

[Author]

Posts