Heater and A/C intermittently not working

Can we get a little more detail about what happens when they are not working? Does the control panel not work and the fan just does not blow? Or does the control panel not come on?

Here are some guides that will help with these various issues. Let's run through this and get the detail on the issue and we can figure out next steps.

https://youtu.be/SNRb6pSwYuU

https://www.2carpros.com/articles/low-or-no-air-flow-from-vents

Thanks