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Hotpoint NSWR 742U - Water Not Heating


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Hotpoint NSWR 742U just over 2 years old.  Ran a cycle for some very dirty cotton sheets at 90c recently, completed successfully.

But since then the machine refuses to heat the water on any cycle.  No error code. 

During the phase of the cycle where the water would normally be heating, the machine is making a clicking sound ( a bit like a clock).

And before anyone says that you can't tell by touching the glass window if the water is heating, believe me you can.  And it's stone cold.

Any ideas?  Thanks.

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  • Root Admin

I would check the heating element with a continuity test meter. It might have not liked the extra work it had to do on the 90 degree cycle and decided to die. Obviously this wouldn’t happen to a healthy heater but if it was in poor condition or caked in limescale it’s possible. 
 

Also check the wires to the heater. 

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the Clicking sound - could that be a relay clicking on the main board (or electronic board behind the fascia control panel) for the heater circuit? 

also could check the thermal cut-out (should be in the middle of the heater element terminals) se if thats enacted due to overheating - will need replacing if no continuity there

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Yes it could be the heater relay not staying on. That would need a new pcb. But need to check the basics first. 

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6 minutes ago, Whitegoodshelp (Andy) said:

Yes it could be the heater relay not staying on. That would need a new pcb. But need to check the basics first. 

do you hear much of thermal cut outs giving trouble on machines Andy?

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  • Root Admin

On a washing machine heating element it’s unlikely Andy. On the element the toc is designed to trip if the heater ever came on with no water in the drum. Unless there was no water in the drum I’d say it was not possible for the heater to get so hot that it tripped the built in toc. 

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Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

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