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Any help please, Dishwasher is definately not heating and cycle times are Epic. i’ve looked at same problem on here which ended up being pcb but mine is clean and spotless, Help Greatly appreciated, Thanks Rob
Ok, wish i had a magnifying glass, but i think i’ve found it, i will confirm when i resolder but i think i have 2 fractured solder joints on the smaller relay, i can just make out movement when i wiggle relay in the form or a hairline crack all the way around, finger crossed, i will let you know asap, many thanks Rob
Re: Zanussi Dce 5655 Dishwasher Not heating. Very long Cycle
yes, i had three fractured solder joints on the smaller relay, very hard to find as there was no discolouration, resoldered, works perfectly again, actually better than it ever did, many thanks
Re: Zanussi Dce 5655 Dishwasher Not heating. Very long Cycle
I’m also having similar problems with my dishwasher. I’ve reflowed all the points on the back of the PCB (no visible damage, used to dealing with troublesome electronics so would probably spot a faulty joint – have tested continuity between relay pins and end points and all seems good) around the relays but still no heat.
Next step is checking the continuity of the heater I’m guessing. How is best to do this? Should I remove the heater (or at least the cable to it) and check at the heater, or can it be done from the connectors which attach to the PCB? I’ve not had the bottom of the dishwasher open (which I presume is where the heater is?) so that should be an adventure.
If it is the heater, how much is the part likely to come to?
Cheers
Andrew
you can test for continuity at the pcb end if you are sure you know which wires are for the heater
just disconnect the connecter from the pcb and test, you should get a good reading as long as theres nothing else in circuit
Re: Zanussi Dce 5655 Dishwasher Not heating. Very long Cycle
Right, I’ve had the whole thing apart. First of all, there’s some sign of water leaking out into the underside of the dishwasher – the dishwasher powder seems to have wreaked the polystyrene float that activates the anti-flood cutout. So I’ve cleaned out the bottom panel and dried it, run it for 30 minutes and the water still doesn’t heat, but the good news is that it isn’t leaking into the bottom tray any more.
I’ve removed the connector from the heater and tested – it gives 24ohms. I’ve had *another* look at the PCB and everything checks out, so unless the relay itself has failed then I’m guessing something else must be up. Unless that 24 ohms doesn’t sound good (i’ve heard 20 to 30 is ok elsewhere).
Cheers
Andrew
Re: Zanussi Dce 5655 Dishwasher Not heating. Very long Cycle
PCB will have failed. They do that. Regularly.
Penguin45.
Re: Zanussi Dce 5655 Dishwasher Not heating. Very long Cycle
Damn, how much is that likely to set me back then? I’m guessing a couple of pounds less than an entirely new dishwasher? 🙁
Re: Zanussi Dce 5655 Dishwasher Not heating. Very long Cycle
Right, I’ve replaced the relay but it’s still not heating 🙁 Is there anything else I can test, perhaps a temperature sensor or something? I’d really rather not spend a hundred odd pounds on a new controller if it actually turns out to be a £20 sensor.
Cheers
Andrew
Re: Zanussi Dce 5655 Dishwasher Not heating. Very long Cycle
Sensor is a thermistor. This is a resistance device, working on the ntc (negative thermal co-efficient) principle. The hotter it gets, the lower the resistance. Typically the readings are in kOhms, falling as the temperature rises. Pull yours, clip on the test meter, warm it up and see what happens.
Penguin45.
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