Bosch ETL6103GB/01 Not heating

[Toni]

Hi
Heater ok on this one, also checked thermostat (With pop out) which is ok.
Could it be the module ?
They retail for about £200 so would like to be sure 1st
any advice would be really appreciated

Toni

[Toni]

Re: Bosch ETL6103GB/01 Not heating

Should be WTL6103GB/01 😳

[leavemetogetonwithit]

Re: Bosch ETL6103GB/01 Not heating

Certainly wouldn’t order module before having checked old one visually. Could just be a burnt relay joint like on the dishwashers. Also check NTC and connections if it has one.
Mike.

[leavemetogetonwithit]

Re: Bosch WTL6103GB/01 Not heating

Had same fault on same model today. Element reading OK. Re-settable overheat stat not tripped. NTC reading 25kohms at room temp.
Could not remember how to get fascia off – only seen one other like it before. And what’s that at 5 o’ clock pos’n under porthole opening – visible with side panel removed? Could that be the problem?
Any help gratefully received.
Mike.

[lee8]

Re: Bosch WTL6103GB/01 Not heating

leavemetogetonwithit wrote:Had same fault on same model today. Element reading OK. Re-settable overheat stat not tripped. NTC reading 25kohms at room temp.
Could not remember how to get fascia off – only seen one other like it before. And what’s that at 5 o’ clock pos’n under porthole opening – visible with side panel removed? Could that be the problem?
Any help gratefully received.
Mike.

That is another NTC.

At 10 degrees it should have a resistance of 19.9 K ohmns, rear NTC at 10 degrees should be 40.4 K ohmns.

You need also to check that the drum is correct resistence, as the appliance will not heat if it believes the items are dry.

Run the test programme will test drum resistance and heating system.

[leavemetogetonwithit]

Re: Bosch ETL6103GB/01 Not heating

Thanks for your help. Will go back tomorrow. Wonder why they give ntc values at 10 deg; maybe everyone in Deutchland keeps their dryer in the garage. Hmm, that’s given me an idea for a new way to test thermistors. Got one of those cold gel packs somewhere. 😉
Mike.

[lee8]

Re: Bosch ETL6103GB/01 Not heating

They give results from 0-35 degress, I couldn’t be bothered writting all of them and the current climate 10 degrees more likely than 25.

[leavemetogetonwithit]

Re: Bosch ETL6103GB/01 Not heating

lee8 wrote:They give results from 0-35 degress, I couldn’t be bothered writting all of them and the current climate 10 degrees more likely than 25.

Ha ha, not in that kitchen I’m afraid. Anyway checked and rechecked both ntcs. Back one was as before (c. 25k) and front one 12.5k or thereabouts. (20/25 deg in kitchen)
Resistance through carbon brush seemed rather high (k ohms)so I cleaned the drum strip surface with alcohol and re-measured. It went down to 100R or so, although varied a lot around that figure. So I thought that might be it. But it made no difference.
Now as the customer lives in a rather posh house and had only called me because he thought he could save some money and was watching me all the time and not particularly amicable, I decided to leave him in the capable hands of whatever Bosch engineer he can find. (Didn’t want to break his plastic fascia [£47] trying to lever it off.) I told him that it might be the module (£175) and that Bosch would charge him £85 plus parts. So he’s going to look on the internet and see what a new version would cost and consider his options.
Mike.

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