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Replaced detergent dispener on KitchenAid KUDS50FVSS3, still not working


Dec 29, 2015
Model Number
1-5 years
Hello all,

I have had a Kitchenaid KUDS50FVSS3 dishwasher for about 5 years and it has been a workhorse. Up until about a year ago when small things started to go wrong; plastic split and metal underneath began to rust on racks, small plastic pieces holding the racks have begun to melt but most importantly it stopped cleaning dishes. I ran the washer empty, with vinegar and with dish washer hard water remover, all to no avail(but i did have a very clean washer).

I noticed the detergent dispenser door was not opening during wash cycles. While replacing the entire detergent dispenser mechanism i noticed the motor was completely burned out. It had heated so much that it it was black in parts,melted the plastic sheet that hung over the mechanism and made a small brown burn mark on the inside of the front panel. I replaced the mechanism with one hiccup, the main button panel slid and tugged on the two thin purple wires connecting it to the handle mechanism. I checked the connections and everything seemed fine so i closed up the front panel and ran the dishwasher. Ran great, detergent door still didn't open.

What's next?

replace wiring harness($82)? replace electronic control board($200)? replace dishwasher ($1000)?

Any help would be greatly appreciated!

Thanks in advance.


Appliance Tech - Moderator
Staff member
Oct 10, 2004
Ontario, Canada

A copy:

PROBLEM: Detergent Not Dispensing

Item in lower rack blocked lid or blocked spray of water to dispenser.
Instruct customer on proper dish loading.

Mechanical binding of dispenser lid.
1. Unplug dishwasher or disconnect power.
2. Check/replace dispenser.

Lid latch binding due to excess detergent in mechanism.
Instruct customer on proper dispenser filling.

Open coil on dispenser solenoid or loose/open connection in dispenser circuit.
1. Unplug dishwasher or disconnect power.
2. Check resistance of dispenser coil and all connections in dispenser circuit.

Faulty dispenser drive circuit on control.
Replace control.


Kinda sounds like you may need to try the control...

Main-Control-Board-W10285179-01282070.jpg Main Control Board