Our quite old dishwasher (candy CD622) has tripped the rcbo (not the sockets rcd) a couple of times in the last 24hours. I've checked for leaks (none) and checked all connections (fine) so unclipped the water pipes between the filter & pump to see if any debris had gotten in. pipes are clear and clean on inside, no scale or crap in the pipes or impeller wheel.
I removed the motor from the unit for better inspection and the motor body was very warm to the touch and i wonder if it is overheating causing the rcbo to trip? i would like to rule out the heater element kicking in, but am not sure how to test that? (can it be tested with a multimeter?)
The motor has a capacitor attached to the body with 4 pins. 2 in & 2 to the motor. the capacitor is AV Arcotronics, 1.267.6CC3 MKP 4uF = 5%
420v ~10000h Class B
470v ~ 3000h Class C
the motor gives me a resistance of 108.9ohms disconnected from the capacitor. other than dusty, it doesn't smell or looked damaged and spins freely.
I did a test with the door open prior to removing the pump & on a normal cycle the arms didn't really move (although they are clean & free to spin) and the amount of spray / pressure was negligible, less than an inch in height from the openings?
I'm guessing that with the heat of the pump casing leads to either a faulty pump or faulty capacitor, i was hoping someone might be able to give me some advice before i part with my hard earned reddies
The capacitor i'm happy to replace, it made a huge difference to my air compressor, although at £80+ for the dishwasher pump on a 10yr old dishwasher, i'm inclined to replace the whole thing...
Thanks for your help,