Well, that hose / service port would certainly appear to be the leak. Nothing around it has any evidence of spilled or flung oil. The question is, what was leaking. The service valve or the hose crimp. I believe that tube actually sits horizontal in the truck with the service port sticking up. If th...

FS10's usually lock up like that when there is no oil left in the system, or when someone charges them with liquid at a port very close to the suction port. Was the system working ok to this point, or had it been sitting a long time? Any history would help. Usually the oil loss happened with some re...

If the system was inoperative when you got the coach, it likely had a smaller crack that had released the refrigerant. Hopefully the previous owner did not try any "Magic in a Can" sealer products in the system. This message board was rebuilt when the software for the old one became obsole...

Yes, use the TXV that was used with the evaporator you plan to use. They were meant to be used together.

The compressor is electronically variable displacement. It runs continuously. There is no switch on the compressor, just the computer PWM input to vary the compressor output. Any other "switch" in the refrigerant loop is a sensor. Fiddling & poking with jumpers & test lights can le...

Within the ambient temperature range that you would want to use your A/C, there is not a problem. Even if you could get the liquid refrigerant to ambient air temperature on a 75f day, so what? That just means less load on the compressor. Excessive cycling is the trademark of the CCOT system. With a ...

In MVAC the condenser equation is simple.

" What is the largest parallel flow condenser I can cram in to the space available in front of the radiator?"

Solve for X

A TXV is a the best plan.

What compressor / condenser parts are you using?

So it DID have a Gross Leak. Why would you withhold information like that? AND it has been open to the environment for 10 years. So the PAG that is in the system has been soaking up water for a decade. Did you flush the entire system before you closed it up? There is no PAG 10 or 20. There are SP10 ...

I don't believe there is any reason to jumper wire that compressor in the FSM.

Why do you think you need to?

When you remove the old dryer, lay it flat & drill a small hole in the bottom corner of it A 1/8" hole is plenty. Then prop it up over a measuring cup, and let it drain overnight to see how much oil was in the dryer. If no oil comes out the system was not returning oil very well, and you sh...