Went to see the two year old dishwasher complaint not heating on wash (Not seen this design before) Checked the usual check sump, confirm not heating then check for heat pump continuity no problems there. Visual inspect the PCB PB300 at the rear nothing…This time I select 30min quick wash and the dam thing heats but put it back to any other cycle and no heat. anybody seen this before ?
I just today had a similar machine doing the same thing, turned out to be a faulty tacho on the motor, apparently if it can’t sense the motor speed it will run the motor to full speed and disable the heater.