[bikemike]

Re: Bosch Dishwasher not heating up and cycle never stops

I Think it is just a shadow in the picture but I’ll whip it out and have a look (the pcb that is, not what you are thinking!)

Mike

[bikemike]

Re: Bosch Dishwasher not heating up and cycle never stops

Ok, an update.
Checked the sensors as described, all are ok.
I found the fine gauze filter to be in poor condition (some of the plastic ribs had broken away) so replaced the filter assembly.
Reassembled and tested on the quick program- and it worked

So I filled it with dirty crockery and set it on the normal program- and it didn’t heat up

So, my question is- Does this point back to the control module?
I can’t see any other reason why it would heat up on one program but not another.
Any ideas chaps?
Many thanks again for all your help,
Mike

[bikemike]

Re: Bosch Dishwasher not heating up and cycle never stops

Hi, thanks everyone for their help on this one.
The machine runs ok, ie water comes in, sprays ok, and the pump empties the machine ok. The only thing it doesn’t do is heat. Where do I find the pressure switch? And how do I check the heater for blockages? I’m quite happy to strip it down, I just need to know what to look for!
Many Thanks again,
Mike

[bikemike]

Re: Bosch Dishwasher not heating up and cycle never stops

Martin wrote:

Chances are that the circuit tends to overheat if you fail to turn the appliance off when it has finished.

The dishwasher was left on for ten days while we were on holiday 😳 It hasn’t worked since…….. :boops:

So do you reckon it is that chip then? The chips themselves are pennies but unfortunately I lack the necessary skills to remove and resolder.

Thanks again,
Mike

[bikemike]

Re: Bosch Dishwasher not heating up and cycle never stops

Right, here are a couple of photos of the whole board.
Back of board-

Front of board- the overheated chip is the one below the main ecu.

Many thanks for looking,
Mike

Edit- for some strange reason the edge of my photos seems to have been cut off? Let me know if you need me to resize them.
Edit again- The photos are all there, I could view them ok if I right clicked and opened in new tab.

[bikemike]

Re: Bosch Dishwasher not heating up and cycle never stops

Will do, just got to dig the camera out again!
Thanks,
Mike

[bikemike]

Re: Bosch Dishwasher not heating up and cycle never stops

Ok, I checked the resistance of the heating element. It came out at 23 ohms. Is that within limits? I guess they go open circuit when they fail. Is it pointing to the circuit board again?
Many thanks for your advice,
Mike

[Author]

Posts