No, my water is hot it just doesn't wash things consistently. Previously I remember opening the door mid session and being sprayed with water and seeing the arms spinning. Now the water pressure is low and the arms hardly spin. I suspect the pump motor is at fault. But I know very little about dishwashers.
If your water is cold I would suspect the element but if this is combined with other faults then maybe the controls (PCB) are causing multi faults.
I'm just a gas engineer, boilers are my thing not dishwashers.
A word of warning - make sure you remove the power supply before messing with the electrics of a dishwasher as many switch on the neutral.
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