More than likely you are going to have to replace the control assembly.
This was a component that was common to fail.
I am attaching the info that we need to confirm this.
Basically, to confirm this we need to check the voltage when you are turning the temperature knob going to the actuator.
However, if the display never changes then the issue is with the control assembly.
I am attaching the info below so please run through this and let me know what questions you have. Thanks
Images (Click to enlarge)
Thursday, February 3rd, 2022 AT 3:30 PM