[Richard]

There is a test function on some meters that allow you read a capacitor. Post a pic of the dial on your meter, and we will be able to tell right away.

You are looking for burn marks on the front and back of the board.

We need to test the thermostat to see what is going on. In God we trust, everybody else bring data.

You really can spend a lot of time, blood, and money throwing parts at this but, diagnosis is far easier and quicker. Look at it this way. This is an opportunity to learn some basics about electricitry, and how to use a voltmeter. This learning will make ownership of this coach and future coaches much easier.

You have demonstrated through your actions and solutions that you are an intelligent and energetic person willing to do the work. Let us help you through this process.

I am going to start with Chapter 1. The tstat is 12V powered. Depending upon what you set the tstat on, it will put out 12V signals that pass to the circuit board on the SCS. Those signals are on separate wires. It can put out a low indoor fan, high indoor fan, compressor one, compressor two, and aquahot heat.

So when you put the tstat on fan only, a 12V signal will pass to the circuit board to turn on the indoor fan. When you turn on Cooling low, the tstat will send signals down the low fan and comp 1 wires. When you activate Cooling High, the tstat sends signals down the high indoor fan, compressor 1, and compressor 2 wires.

Wait…………..so what activates the outdoor fan? The outdoor fan is activated when the compressor circuit is activated by a relay on the control board. If both compressors are activated then the outdoor fans runs on high.

Interesting tidbit. Although the tstat has low and high indoor fan settings, and the board has indoor low and high circuits, and the indoor fan motor has low and high wires, I could NEVER tell a speed difference.

So why belabor all these points? The behavior of indoor and outdoor fans stop but compressor continues to run makes no sense to me. If the compressor is getting power the outdoor fan should be getting power. Both indoor and outdoor fans stopping at the same time does not compute because they are on two independent circuits.