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  1. A Heat Pump That's Not Cooling...A Troubleshooting Question

    In this troubleshooting situation, the problem is related to the refrigeration system, not the electrical or air handling system of this heat pump. It is a long way from being new, but our customer...
  2. Once you've passed the core section of the EPA...

    Once you've passed the core section of the EPA exam, and you have proof of that...meaning that the proof can be photocopied and sent in with your exam re-take... you don't have to take it again.
    ...
  3. Michael, You're diagnosis is absolutely...

    Michael,

    You're diagnosis is absolutely correct.

    Regards,
    Jim Johnson
  4. Troubleshooting Problem: An A/C Unit In An Empty House That's Not Cooling

    Here’s the history on this situation: The house has been empty for an extended period of time due to the owners passing on, and the relatives who inherited it decided to fix up the place in order to...
  5. The system is properly sized. I should have...

    The system is properly sized. I should have mentioned that. The problem is the indoor coil is dirty. A pressure drop of 0.25, or possibly .30 on the wet coil would be the maximum. At .05, there is...
  6. You mention that this company doesn't recover...

    You mention that this company doesn't recover refrigerant. If they are blatant about it, I'm surprised somebody hasn't turned them in for the $10,000 bounty the EPA offers once the person committing...
  7. I Know I'm Green

    You mention that this company doesn't recover refrigerant. If they are blatant about it, I'm surprised somebody hasn't turned them in for the $10,000 bounty the EPA offers once the person committing...
  8. Troubleshooting Problem: A Split System That's Not Keepng The Building Comfortable

    In this troubleshooting situation, there is a lot of history with the seven-year-old split system in this three bedroom, two bath rented house, and the tenants are complaining that the temperature...
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    NATE Certification

    Since you went through the testing and certification procedure, you may not have to take the test again. As far as whether it would be worth it or not, that's a personal decision you have to make. In...
  10. You're on the right track. Here's my take on the...

    You're on the right track. Here's my take on the complete explanation on this one.

    A failure of the original capacitor led to the wiring modification that eliminated the capacitor wired from L1 to...
  11. Troubleshooting Puzzle: A Heat Pump That's Not Working

    In this troubleshooting situation, you have a customer who has called to say that the heating/cooling system for their office is “not keeping people comfortable”.

    When you arrive at the strip...
  12. What Do Consumers Understand About Certification?

    I’ve had many discussions with technicians about going through the NATE, HVAC Excellence, or RSES testing programs, and one of the comments I get from some of them is that consumers don’t understand...
  13. Thread: Micron gauges

    by Jimtta
    Replies
    6
    Views
    1,037

    SUPCO Micron Gauge

    I have a SUPCO digital gauge that I've used in both indoor and outdoor situations and it has always been accurate. I don't recall the model at the moment, but it's the one with a remote sensor...
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    Summer and TV News Stings

    Hello Everyone,
    I would like to your comments on this subject.....

    Since our company provide training for HVAC technicians, I’m always interested in the sting operations that local TV news...
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