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  1. I have a well worn schematic that says it is a...

    I have a well worn schematic that says it is a start relay. HAs 2 huge start and 2 huge run caps running through it. Actually 11 wires. Just wondering if there is a way to rig a replacement? Don't...
  2. 50 year old Friedrich condensor still running ..BUT need start relay

    This unit was on my present home way before I got here, been babying it along, compressor running strong, but fan motor recently bit dust. Rigged up a replacement but start relay is sparking and...
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    263

    Not sure what you are talking about itaint,...

    Not sure what you are talking about itaint, wasn't talking about operations, except mine was reading wrong, just was wondering what Testo does to recalibrate and considering what the button on the...
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    Factory calibrating a testo 550

    Anyone know what is involved when you send in a testo to be calibrated? It cost less than $20 so it cant be much. Mine was acting weird the other day but I flushed with nitrogen and seems to be ok. I...
  5. It had a load as the unit was off quite a while...

    It had a load as the unit was off quite a while and it has cap tubes and 1/4" LL, R422D
  6. anyones Testo ever read WRONG - can we trust electronics????

    I have a Testo 550 that I have really enjoyed, until today.
    Working on a 422D system that I was concerned may have been overcharged. Ambient 94, suction 80, discharge 360, SH like 9 etc. so I...
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    . I'm actually thinking about getting metal evac...

    . I'm actually thinking about getting metal evac hoses.[/QUOTE]

    Please post a pic of this setup. Like you use short copper lines? What kind of fittings? I think hoses cause a lot of my vacuum...
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    3,243

    Blu Vac any better?

    Just wondering how you like the new gauge. I have brought back my YJ 69080 twice now as it gets stuck quite often like 3/4 scale. Clean it with alcohol and SEEMS to work for a while but I don't trust...
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    I have used it with great success. Took a long...

    I have used it with great success. Took a long time to try it, but finally a while back used it first on my own home where I had a slow (add a little every year, under ground lines..30 + year old...
  10. testo 550=zero out pressure sensors before every measurement.

    Do you guys "zero out your pressure sensors before every
    measurement" as the manual says. I don't see the purpose. The hoses just stay pressurised all the time. Lot of, I feel , unnecessary work,...
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    compressor is running, was wondering what design...

    compressor is running, was wondering what design low pressure should be, can see a fourth tube that is stubbed off, sorry, not thinking cause I do have a pressure chart so.... 0 degrees for freezer...
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    1,814

    r12 refrigerator pressures

    Hey guys , new here, usually in residential tech area.... I have an older refrigerator that is not cooling. Why are there 3 tubes coming off the compressor, 2 to the condensor and the third to the...
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    3,685

    I just slip a beach umbrella over a 1/2" rebar...

    I just slip a beach umbrella over a 1/2" rebar rod drove into the ground
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    1,392

    Mine entered into service as a lowly nasal bulb...

    Mine entered into service as a lowly nasal bulb syringe.
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    895

    Since you changed the TXV, I assume you changed...

    Since you changed the TXV, I assume you changed the lld, but I wonder if the old refrigerant was contaminated, thus creating a ll blockage? Dirty condenser coil creates high head.
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    1,296

    ok, you are making my day Weeb!!!, its one thing...

    ok, you are making my day Weeb!!!, its one thing to go through the procedure, but to know WHY and WHAT is really happening.. some here want to give a man a fish, you are teaching me to fish, thanks
  17. Replies
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    1,296

    Now that is the kind of explanation I have been...

    Now that is the kind of explanation I have been seeking. Thanks very much for taking time to explain!
  18. Replies
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    1,296

    Thanks weeb, great idea, was cooler in house on...

    Thanks weeb, great idea, was cooler in house on freeze day and will check indoor fan and orfice. I suspected I may have overcharged to get SH up.
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    Thanks HVAC, am still thinking about all that...

    Thanks HVAC, am still thinking about all that (not dryer but orfice) and Newold, will check the fan more thoroughly. Great ideas.
  20. Replies
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    Should have stated that when I saw the unit...

    Should have stated that when I saw the unit frozen, I cut it off for the day, measurements were all taken next day when I cut unit back on for a while, then cleaned coil. System is not matched,...
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    1,296

    knew I would miss posting something, clean evap...

    knew I would miss posting something, clean evap and filter, good airflow, no leaks in duct (furred down supply) or return, dr pepper in refrigerator, shower rod in bathroom... oops got carried away...
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    why did this unit freeze up

    Appreciate some help here , first here is the info, I've been here long enough to know you guys want a lot of data:15 year old , r-22 ,1 1/2 ton rheem split,orfice, low side pressure 68, SH 5.6, T1...
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    Probably not your problem, but in my case the...

    Probably not your problem, but in my case the return air chase had a huge ( probably 5% of area) gap where it had been sucking attic air for who knows how long, but finally kicked high limit switch...
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    Well, there are at least 4 causes, just found...

    Well, there are at least 4 causes, just found today, leaking return air.
  25. I just check for a voltage drop across terminals,...

    I just check for a voltage drop across terminals, 1 volt or more,change.
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