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Yes, I think I’ve probably gone as far as I can now. Looking at the cost of getting an expert in + cost of a board, if that is the solution + age of the dishwasher, I’m leaning towards just replacing it now.
Thanks for the advice.No sign of connectivity to earth using my multimeter, but I think things would be blowing anyway if there was
I only have a multimeter, so unfortunately I can’t test the heater for earth faults. I might take a chance and try replacing the heating element.
Thanks again for the advice.Just an update, after more detailed investigation, to see if anyone had further suggestions.
I have run a few tests of the 65 degree short wash, and can confirm that the dishwasher is heating, but only to approximately 36 degrees. At the start of the cycle, I can measure 12v on the heater relay, 240V across the heater, and the water heats up, but the heating only appears to kick in for a few minutes, until the temperature reaches the upper 30s, then stops. When I reported no power on the heater in my earlier post, I suspect I just didn’t have the multimeter leads correctly inserted, and missed the short period of initial heating.
So the heating circuit seems to be functional, but just is not operating for long enough to get things heated up properly. I replaced the temperature/turbidity sensor, but that has not made any difference to the operation of the dishwasher.
Assuming the new temperature sensor is working correctly, and the heating circuit is working, I guess there could be a fault in the controller itself, i.e. the controller board is incorrectly interpreting the temperature sensor and assuming that the water has reached the correct temperature? That seems like quite an unlikely error, however, as everything else on the controller board seems to be working fine (programme cycles, water fill, water drain, etc).
It sounds like my sensor values are in the right ball park then? I’m a bit puzzled why I get power to the heater for the start of the Auto cycle, but nothing at all on the short 60 deg cycle, if the temp sensor is faulty.
