Recent content by motterpaul

  1. M

    How to add R410a without losing vacuum

    @danski0224 Thank you for the reply. What you described is also what looked logical to me, but I was watching videos and most people were using the end flare of the 1/4" VCRT instead of the side one. That had me confused, but I got my splits working last week and they are running very smoothly...
  2. M

    How to add R410a without losing vacuum

    Where do you connect the refrigerant hose to the system if the vacuum hose is also already connected? That was my original question. The cylinder has an open flare (no Schrader) - so you need to fit the other end of the hose to a Schrader since that is how most hoses are made. I assume you...
  3. M

    Moving Mini-splits - coils or concrete?

    I never realized before that moving them is a problem, but I also had coils on all of them. You do have to clean the fins sometimes, but now I know not to move them when I do.
  4. M

    Moving Mini-splits - coils or concrete?

    Okay - here is the issue. Basically, flares **** in many ways, and here is one. Most installation manuals recommend that you create a solid mounting for the outdoor unit, usually a cement pad, or one of those "on the wall" brackets. Is there a reason for this? Yeah - it's because most...
  5. M

    Daikin mini split trouble shooting

    I saw that it applies to a lot of models.
  6. M

    What happened to my pump?

    Amazon's in-person customer service by phone is pretty nice - I'll bet they would do it if you explained. They were the ones who gave me the amp.
  7. M

    Daikin mini split trouble shooting

    It must be a common error because there are tons of YouTubes on it - just google Daikin L5 Error I build my own guitar pedals and have all the electronic tools I need, but that looks like a problematic repair just tearing the unit apart. Changing out the PCB board is easy, just remember the heat...
  8. M

    What happened to my pump?

    They should make an exception for Alaska. I actually get a lot of Amazon returns as just refunds (no return required) because they have rules about what they can pick up. Big magnets are one thing so I actually got a $350 guitar amp free when I asked to return it. Speakers, transformers, and...
  9. M

    Vacuum tests results - Nitrogen Purge needed?

    Yeah - pushing the oil up against the walls is what I meant by "nitrogen purge." There are so many terms I probably get them mixed up. I just discovered the Reddit Minisplit group and they seem to have a completely different vocabulary. By the way - how did that "nitrogen purge" that you did...
  10. M

    Vacuum tests results - Nitrogen Purge needed?

    I assume you mean the vacuum - yeah, I thought about that. Lots of oil but that's OK. If it is doing what I hope - getting the moisture out. But I also wonder about any oil trapped in the lines and think maybe a nitrogen flush is better. These systems are four years old and were installed with...
  11. M

    Vacuum tests results - Nitrogen Purge needed?

    I have one mini-split where a vacuum to 280 takes 25 minutes and it goes up and down and seems to get stuck at certain numbers for quite a while. It'll hit 1250, go back up to 1300 (for example), and then bounced around between them before it goes lower. Happens all the time. Then on the other...
  12. M

    What happened to my pump?

    I love to tear things apart and I watched some videos on guys tearing pumps apart. There was a lot of rust and sludge. Also O-rings seem to be a big factor. When I unboxed my new one (Robinaire) I noticed the O-rings on both the gasket and the oil valves were not all the way down, so I moved...
  13. M

    What happened to my pump?

    No, the Harbor Freight pumps are strictly made for car coolants. It says it gas 3/8" and 1/4" connectors, but neither one of them is flared - they are really made for car coolant hoses, not R410a. " "Dual ports for R134A and R12/R22 systems" is what it says in the specs The Robinaire started...
  14. M

    How to add R410a without losing vacuum

    @danski0224 - I appreciate your input and I guess I should expect that some people will take me literally. Of course, the system doesn't "know" anything, but it operates correctly if the right amount of coolant is loaded before you start it. I assume you are saying the coolant has to stabilize...
  15. M

    How to add R410a without losing vacuum

    This is a good question. I don't see why the refrigerant has to be "pulled in" to the lines. I assume it is under pressure in the tanks. I don't hear him say anything about turning the compressor on, and in fact, the power is not even connected. I guess that if you have the right amount of...
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