Defy Dishwasher will fill up with water but then just hums when arms are meant to be spinning. Any suggestions to repair ? Thanks

SOURCE: water not going through spray arms

Have same problem except big motor spins independent of stripped? impeller. tried to reassemble but seems mechanical or adhesive agent misssing from one shaft or the other and the motor spins the impeller (now tight) only to have it slip off again and stop pumping water.

SOURCE: dishwasher pump will drain but not force water into spray arms

If the washer is not used regularly the shaft can stick to the seals and prevent the motor from spinning. This happens quite regularly for me if I don't use the washer often. You can just take off the bottom panel - after shutting off power to the dishwasher - and access the motor. you should see some fins and then just try to spin the motor by hand. It usually takes about 90 degrees of rotation before the motor breaks free from the seal. You'll have to fight through the spring-like resistance created by the seal-shaft adhesion. After it breaks free the motor spins freely and you should be all set to go. I haven't found a more permanent fix for this other than running the dishwasher more regularly.

SOURCE: Upper arm does not spin

Hi,
OK, the arm is jet-propelled, so it will spin if it is free to rotate and has water squirting down into it. If it >is< free to rotate, then either the water isn't squirting, or it is missing the target. On my machine - different brand - the guide cone came loose when I dismantled the upper bar assembly and it hadn't gone back correctly aligned, so the water missed the hole.

I'd check that first. D.

SOURCE: middle arm of dishwasher not spinning

I'm the one that reported the same problem in November as "Guest". I fixed mine finally. I removed the middle arm again and noticed that the holes that spray a jet ot water causing the arm to turn aren't the ones on top. On the bottom of the arm there's a small hole at each end. I looked and one of the holes had a small piece of crud in it. I had to use the tip of an ice pick to dislodge it back into the arm. I then ran water into the arm several times hoping to get the item completely removed. I never did see anything come out but I then ran water through the arm holding it so the water could run out one end. The piece didn't show up in the hole again so I tried washing it to the other end. It still didn't show up so I guess it must have washed out the first time. It's been 3 or 4 weeks now and the arm is still functioning perfectly. Hard to believe that one little piece of trash can cause so much irritation. Good luck on this being the problem for others.

SOURCE: Dishwasher starts to fill then just hums

Sounds like a motor problem. Behind the chopper is an access to the impeller, try turning the impeller or the chopper blade and see if the motor will rotate. If it doesn't, then something is stuck preventing the motor from running.