Charged my AC system but not getting power to compressor. I have voltage thru the mode switch to the de-icing switch. I jumped the leads at the de-icing switch and there is power to the compressor. It is my understanding that the switch stays open until it detects icing on the probe and then closes. I am wondering if it is possible for the switch to be stuck open? Is it possible to clean the contacts?
Sounds like the de-icing switch has failed open. Doesn’t matter which lead goes to which terminal since its either open or closed. Never tried to open one up, but a repro is available: