Mini Split Leaking Valve

[Doubled33]

I am pretty sure I have a leak at one of the high side service ports where the line is sweated into the back of the valve. I pulled a cover off and I see some oil at one of the fittings.

Is there any hope of fixing the valve?

Does the unit need to be evacuated or are the two larger valves at the top able to be used to isolate?

Do these valves disassemble to be sweated?

Does the factory use dye in the charge? I have a UV light but I have to dig to find it.

It is a 48000 btu Media.

I should caveat this with I am pretty confident with a torch and have a Turbo Torch I use with acetylene.

 

[chinboys]

Confirm the leak by using a refrigerant sniffer leak detector, or soapy water at these flare and braze joint on both the high (small diameter) liquid and and low vapor lines.
How much of a leak or what is the steady state high and low pressures readings for the type of refrigerant?
You are allowed refrigerant loss per EPA 608 regs. You just have to charge the system back up to its specs but at a cost and inconvenience.

If you have a receiver tank, you can you might be able to front seat the king valve and use the system's compressor to pump down the remaining refrigerant to be able to redo the flare nuts with sealant and to rebraze the connection.

I would not use dye or refrigerant leak sealing liquids as it will void your warrenty.

 

[fitter30]

If the leak is on the line unit side of the valve all refrigerate has to be reclaimed. Done correctly line should have a continuous nitrogen purge while removing and installing to keep the copper from oxidizing.