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Dishwasher stopped heating water & drying. I assumed the heating element had gone but removed covers and checked for power to the element live terminal and it was indeed live. I then assumed the thermostat might have gone. I have a multimeter but wasn’t sure what the terminals were so didn’t test it. I removed the spade connectors to try and remove the thermostat but couldn’t work out how it could be removed. However, since putting the terminals back on the thermostat it now appears to be heating up. Hopefully all is now well but I always like to know why as it increases my personal knowledge base and understanding for the future. This is how we all learn after all.
Cheers for any advice!
Re: Hygena APL 8224 Dishwasher
Presumably an oxidised contact – often removing and replacing a connector will restore the connection. Use your meter for continuity testing and resistance checks on heater and stats – don’t live test; it’s exceedingly dangerous and shoudn’t really be neccessary.
Penguin45.
Re: Hygena APL 8224 Dishwasher not heating up
Cheers Penguin. My optimism was short lived. It did indeed heat up but didn’t get hot enough to wash and dry. Can you explain why there are the 4 terminals on the stat. I know you said I shouldn’t need to live test the terminals but when it is in heat mode the opposite terminals at the top of the stat are live as is the corresponding leg of the element, but the bottom terminals are not live and consequently the other leg of the element is also not live. AmI only getting heat to half the element?
Re: Hygena APL 8224 Dishwasher
Double function thermostat – one is “in-line” with the heater and acts as a safety cut-out (usually c.90c) The other will be the temperature control stat and will be linked to the timer. I think it uses static heat, so the thermostat should be normally open and close at around 65c, thus restarting the timer. Being a Brandt-built machine, I can find no tech info or even a wiring diagram to confirm this :rolls: . If you’re lucky, the operating figures may be embossed on the edge of the thermostat – ie 65NC 90NA. Awkward so and so to refit into the grommet……
HTH,
Penguin45.
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