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Xringer · 08-03-16, 05:01 PM

I can't find the high-side port. It's either really inaccessible, or doesn't exist..
I think my HVAC buddy might have a scale that could measure out a 23 oz (1.4375 pound) charge..
Not sure if he has a recovery unit for R410a..
Anyways, maybe bringing up the low-side to 80 PSIg could get it working right.

As to the leak.. When I wanted to remove the low-side port cab for inspection, it was on there like it had epoxy on it..
I had to rig up a low table to brace the tube-side wrench, while I unscrewed the cap,with a socket wrench..
No rubber gasket inside, but it doesn't seem like a leaking Schrader valve.
But, I replaced the cap with a new one (w/ a gasket), just in case.

If it's a pinhole in one of the HX coils.. I'm not sure how to even find a leak
there, much less repair it.. Have to do some reading!

08-03-16, 05:01 PM	#16
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	I can't find the high-side port. It's either really inaccessible, or doesn't exist.. I think my HVAC buddy might have a scale that could measure out a 23 oz (1.4375 pound) charge.. Not sure if he has a recovery unit for R410a.. Anyways, maybe bringing up the low-side to 80 PSIg could get it working right. As to the leak.. When I wanted to remove the low-side port cab for inspection, it was on there like it had epoxy on it.. I had to rig up a low table to brace the tube-side wrench, while I unscrewed the cap,with a socket wrench.. No rubber gasket inside, but it doesn't seem like a leaking Schrader valve. But, I replaced the cap with a new one (w/ a gasket), just in case. If it's a pinhole in one of the HX coils.. I'm not sure how to even find a leak there, much less repair it.. Have to do some reading! __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less.. Last edited by Xringer; 08-03-16 at 07:26 PM..