A/C compressor runs with heater on

Good afternoon,

Do you have automatic climate control or manual control AC?

The automatic will always activate the AC compressor for humidity control.

The manual should only work on defrost mode.

Roy

Not automatic, manual control.

Okay, there is a module under the hood called a totally integrated power module. It controls all body functions including the AC controls. The control head you use to command sends a signal to this module and based on that input, it turns the compressor on and off.

This module is a common failure. With the age of your Jeep, I would question if it is covered under warranty.

Roy

Hi Roy,
That module was already replaced, it was covered under warranty, do to the parking lights not shutting off.
Thank you

You need to have that rechecked to see if it has the proper programming in it. The wrong program will cause this.

Roy

Okay, thanks .

You are welcome.

Looks like it may be programmed for the automatic climate control system.

Roy

Okay. Thanks a lot for the info!

Come to think of it, I didn't have this issue until it was replaced. Thanks again!

You are welcome.

Roy