Heat pump most likely. You will need a test meter to confirm. Locate the heat pump, on the front there will be a connector with two large red wires and an earth. Unplug and test for continuity between the two terminals vacated by the two red wires.
The spray arms turn alternately a minute or so at the top then the bottom for a similar time, so you may not of seen it move. The tap icon I have only seen when the reed switch is faulty but the dishwasher doesn't fill and go into wash. If yours is filling and completing the cycle with just no...
Is there any signs of leakage around the right side and the back where the plastic base meets the stainless steel cabinet or any brown seepage into the base because these dishwashers leak. Not the cause of the Heat faliure but another problem they have. There is a tub repair kit but that doesn't...
Unplug the dishwasher. You will need to remove the front decor panel then the lower metal door panel. Leave the fascia panel on. Then remove the lower inspection panel and you will see the heat pump to the right.These are all torx 20. There are two fat red wires and an earth on the heater part...
If you take the pcb out of the box and look very carefully, sometimes you can see some fried components. Usually a resistor and a mini transformer chip.
You can use either, the white ones will be the same as the failed ones you have.The black ones are softer C00251802 and will give you a better chance of a lengthy repair.