Hotpoint NSWR 742U - Water Not Heating
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.
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Hotpoint NSWR 742U not heating water after 90°C wash
- The problem
- A Hotpoint NSWR 742U, just over two years old, completed a 90°C cotton cycle but afterwards stopped heating water on all programmes. No fault code was reported. During the stage when heating would normally occur, the machine made a repeated clicking sound and the door glass remained cold.
- Likely cause
- The accepted diagnosis was a failed heating element, possibly weakened or affected by scale and failing after the high-temperature wash. Other possibilities mentioned were damaged wiring to the heater or a heater relay on the main PCB not holding in. A thermal cut-out was discussed but considered unlikely on this type of washing machine element.
- What fixed it
- Recommended action was to check the heating element with a continuity meter and also inspect the wires to the heater. If the heater and wiring proved sound, a heater relay fault on the main PCB was suggested as a possible next line of diagnosis. The exact repair carried out was not confirmed in the discussion.
- Checks to try
- Continuity test of the heating element
- Check wiring to the heater
- Consider whether the clicking is the heater relay on the main PCB
- Parts or tools mentioned
- Continuity test meter
- Heating element
- Main PCB
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
5 Answers
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.
Need Professional Help or Spare Parts?
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
Yes it could be the heater relay not staying on. That would need a new pcb. But need to check the basics first.
Need Professional Help or Spare Parts?
do you hear much of thermal cut outs giving trouble on machines Andy?
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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