George for Model Number WDF750SAYM3 I have the Whirlpool dishwasher model (about 1.5 yrs old) WDF750SAYM3. The problem I have is that: 1. Start the dishwasher 2. Water fills, but not enough to trigger the float switch 3. Motor won't start 4. Dishwasher completes cycle, but dishes are not washed Dispenser is opened but detergent is not dissolved. I ran the diagnostic test, as mentioned in the tech sheet. It always comes up with error code 6-4. I tested the float switch. When switch is off, reading shows infinity. When switch is on, reading shows 003. I checked the F8 and F9 fuse also (it wasn't easy getting to it, but with great difficulty managed it) and they both read 2. Could you please help and give me some guidance regarding what could be the issue? Last week, the dishwasher would work intermittently. Sometimes, washes, sometimes motor wouldn't start and some times it would start, but then motor would not run midway during the cycle. But cycle always gets completed. I tried pouring water into the dishwasher (like about one third gallon) by opening the door during the water fill to make sure float switch will turn on, but even then the motor is not starting now. I only hear clicking noise.
Answer Hello George. This does not sound like a water level issue. This sounds like the motor on the unit. You need to test for power to the motor, and if it is there, and the motor does not run, you will need to replace the motor on the unit. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html Read More... Answered by AppliancePartsPros.com | Monday, September 28, 2015