If you are using a recovery machine to evacuate and recharge as you should be, it will charge with the engine off.
If you have no light on the AC button, then your issue is electrical. First thing to do is test the fuses with a test light and make sure the control head is getting power. The control head is the switch assembly inside. If that light is not lighting up, then the switch is not working for some reason.
Before I can get you a wiring diagram I need to know if you have push button controls or levers.
Friday, November 27th, 2020 AT 8:48 AM