Jenn-Air JS42PPDUDB01 Freezer Too Cold, Please Help

[minp22]

Model Number

JS42PPDUDB01

Brand

Jenn-Air

Age

More than 10 years

Hi everyone. I have a JS42PPDUDB01 built in side by side refrigerator/freezer. I have the following problems:

• Freezer cools to below setpoint, compressor does not turn off (setpoint is 5, freezer will cool as low as -8 independently measured). Compressor does turn off during defrost cycle.
• Compressor occasionally runs with a lot of noise and vibration, will resolve after a brief time or a power cycle.
• User display does not always display actual temperatures, only sometimes when far above/below the setpoints. Usually it just displays the setpoints. Is that normal? When they are displayed, they are accurate to within a few degrees of my measurements. I have seen the display read -10 for the freezer but the compressor is still running.

I have done the built in self tests, checked the thermistor, checked the defrost thermostat, and replaced the main circuit board with a refurbished one. The problem persists. When I unplug the low voltage signal to the compressor inverter, it does shut down.

Does someone know what the problem may be?

Thank you.

 

[minp22]

There is no logic in the user display and control board with the temperature displays and buttons is there? All the logic is in the main board?

 

[Jake]

Yes, all logic is in the main control board.

This will be a very difficult problem to solve because you've already replaced the parts involved to this problem.

So its best to contact Jenn-Air at 1-800-536-6247 to come out and see what's going on.

Jake

 

[minp22]

Thanks for your response. I suspect they will just end up throwing (retail priced) parts at it as well. I am being sent another refurbished board just to rule it out. After that we will see...

The part I don't get is why the freezer temperature is not displayed properly and not showing an error if the user control and display board is working as it should.

 

[minp22]

Well the new board did not fix anything either. One thing I did notice was the setpoints are retained when swapping boards so there is at least some nonvolatile memory in the display board. I am tempted to change it but it is expensive.

 

[Jake]

its best to contact Jenn-Air at 1-800-536-6247 to come out and see what's going on.