Charging system suddenly quit.

Can you post a link? Download the diagram / destructions?

What sort of animal is it? I used to work on HVAC res. and light commercial, gas, elect, oil, and heat pumps

Sounds like a ground sourced heat pump? What is it doing or not doing?

Frankly, if you know little about electrical and refrigeration, probly time to call "me," LOL "Me" being the me that is younger and in your neighborhood, the honest "me" who fixes this stuff.