Recent content by Kingtut

Thanks. It felt like a little bit of a high risk manouver. I just couldn't figure out what was going wrong and got desperate. I had a little bag of valves and kept trying new ones, not realizing that they were probably all working fine. Anyway, the minisplit seems to be working well now. Thanks...

Sorry. Disregard. I just didn't realize how much residual pressure was in there. The valve seems to be working correctly. Thanks!

Thanks for all the help. I was able to get a new air exchanger and get it all hooked up and installed. Everything is holding pressure great and it held a vacuum down to 200 microns hardly raising at all in 15 minutes. I double vacuumed with nitrogen between and then weighed in refrigerant...

OK. Sorry. That's what I meant to say before. I pressure tested the coil by itself and the pressure dropped 5 psig in 80 min. It was inside at stable temp and the nitrogen was loaded into it the day before, so the temperature shouldn't be any factor. So far it's the only thing showing a possible...

Yeah. I have the coil under pressure still and I recorded the last reading before taking off the gauge. I was losing 1 psig when I removed it from the core removal tool, so I know what the reading should be when I reattach. I have the gauge on the 3/8 line right now - I'm going to test...

I capped the 3/8 line inside and tested through the service port and I attached a flare connector to the 1/4 and pressurized from there.

I wound up taking the interior unit off the wall to test everything seperately. Right now the small line is holding 465.0 psig for a half hour. Yesterday, the 3/8 line dropped only 4 psig over 24 hours, but the lines run through the attic, under the insulation and it was far less sunny today and...

Thanks. I'm definitely going to do the Flare seal if I open up the connections - I got them today. I'm having trouble finding the leak though. I've been using big Blu micro leak detecting fluid but I can't seem to apply it without getting tons of suds to begin with. I'm using the version with...

OK. Thanks. There does seem to be a small leak. This morning it was down to 509 at 80 degrees,which is about 10psi lower than yesterday when it was around 70 degrees.

If I can't find any leaks anywhere, would you recommend undoing the flares and installing the flareseals anyway? Someone else recommended nylog on the valve cap. Would that work too, or is the loctite preferable? Thanks for the help!

I hesitate to inspect the flares because I don't want to mess with them if they are not the problem. The pressure seemed to have held overnight. I have it written down at home but I think the pressure only dropped around 30 psi with a temperature decrease of about 20 degrees overnight...

Thanks for the responses. I bubble tested the flares outside but not inside. I haven't taken them apart to look at though. There was no oil that I could feel around the fittings but they were tarnished in a way that I wasn't sure about - maybe oil from months ago? (the unit hasn't been working...

Hi all. I have a 12000 btu Mitsubishi minisplit that wasn't working. I went to reclaim refrigerant and got nothing out. Recovery machine sprayed a little r410-a when I was purging the hoses, but didn't add any weight to the tank. The pressure of the system was slightly negative afterwards. I...