FIXED KUIA18NNJS11 Under Counter Ice Maker - Issue with Recirculation Pump HELP!

[tdshort]

Model Number

KUIA18NNJS11

Brand

KitchenAid

Age

More than 10 years

I am usually able to repair this machine but this time I am stumped. When I turn the machine on it always performs the flush cycle as it should but, after the 2nd fill when the freeze mode begins, the recirculation pump runs for about 30 seconds and then shuts down. The condenser fan continues to run and the evaporator plate still continues to freeze, just no water pumping.

I am checking the voltage at the pump plug on the bracket in the interior of the machine and the voltage is dropping from 14v to around 10v-11v shortly after it initializes the recirculation pump. I am assuming this drop in voltage is what is causing the pump to stop if it truly needs at least 12v to operate.

If this drop in voltage is not normal would the issue most likely be the transformer, board, or harness? or is the drop in voltage normal?

Thanks for the help!
Terry

 

[Jake]

That's a good question Terry. Check the voltage directly from the control board and the transformer for 12 volts DC. I'm attaching your tech. data sheet below that shows you the wire schematic wire colors to do that test.

Here's the recirculation pump for your model: Pump-Recirculating W11566405

Here's the control board for your model:
Main Control Board WPW10141364


Here's the transformer for your model:
Transformr WP2310139


Jake

 

[tdshort]

Follow-up. It ended up being the control board. Was not sure how to isolate whether it was the control board or transformer but since all of the other leads on the transformer tested at full voltage I decided to try the board. When I tested the blue lead from the board and red/blk from the transformer I was getting fluctuating voltage between 9.5v to 14v so figured it was a board issue. FIXED!!

 

[Jake]

Excellent Terry, glad to hear the new control board fixed it.

Thanks for the update!

Jake