Hi, I have a KitchenAid (Whirlpool) dishwasher model KUDE40FXSS5 (February of 2012) not circulating wash water properly.
Permanent magnet motor (WPW10328226) runs in 1 sec. spurts. Ramps up to 123v, then subsides, then repeat. Ohms out good (5-10 ohms per stator pair), control boards are all visually good. Suspected speed/Hall sensor on motor, or wiring harness break, or control board malfunction. Donít see a Hall sensor anywhere, control board looks fine, and wiring harness ohms out as good.
Self Diagnostic Test ran through, indicated wash motor problem. ~5v DC getting to motor control connector.
Wasnít able to bench test motor, but since it runs when 120v applied by control board, I assume itís good, but Control Board is bad (W10473198 - Whirlpool Dishwasher Electronic Control Board).
Iím a little stumped as to why the voltage ramps up and down like that, and hate to buy a $150 board only to discover it doesnít fix the problem. Thoughts?