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  1. Replies
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    Ok, so this was all human error. The previous...

    Ok, so this was all human error. The previous technician, during annual maintenance, changed the gas pressure. He thought he was adjusting the low-fire pressure when in fact, he was adjusting the...
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    I also have the troubleshooting guide and it's...

    I also have the troubleshooting guide and it's not really helpful in this situation. The fault code #34 is a response and not really the problem.
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    Carrier MN7 fault code 34

    Hi guys. I am working on a Carrier 59MN7A080V171114. The system is dropping out at the same time the blower comes on in minimum fire. I have checked the High/Low gas pressures, voltages and pressures...
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    The Carrier MN7 (all Carriers) do not recommend...

    The Carrier MN7 (all Carriers) do not recommend adding a screen to either termination pipe. In your area, you will keep out the critters but build up ice and snow and be riddled with blocked vent...
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    I agree. For those of us who've been around this...

    I agree. For those of us who've been around this industry for some time, standard practice was to replace the drier every time the system was opened, but if the drier is never exposed, does it need...
  6. Thread: HSI HELP

    by jpbhvac
    Replies
    23
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    1,078

    I have no idea what that means!

    I have no idea what that means!
  7. Thread: HSI HELP

    by jpbhvac
    Replies
    23
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    1,078

    You've spent time trying to discredit me, but...

    You've spent time trying to discredit me, but offered zero assistance to the original question. If you have something to contribute, get to it. If not, ... Well you fill in the blank!


    Sent from...
  8. Thread: HSI HELP

    by jpbhvac
    Replies
    23
    Views
    1,078

    http://forum.oiltechtalk.com/attachments/hotsurfac...

    http://forum.oiltechtalk.com/attachments/hotsurfaceignitersheet.pdf

    This a good start. It's not exhaustive, but helpful for the common igniters out there.


    Sent from my iPhone using Tapatalk 2
  9. Thread: HSI HELP

    by jpbhvac
    Replies
    23
    Views
    1,078

    No it's not! For most carbide igniters, it's...

    No it's not! For most carbide igniters, it's right on. For Most nitride, 15-40. I've had great success following these RoT's. There are a few odd balls out there that don't fit, but we learn these...
  10. Thread: HSI HELP

    by jpbhvac
    Replies
    23
    Views
    1,078

    A good hot surface ignitor will have a resistance...

    A good hot surface ignitor will have a resistance of 40 to 90 ohms. Greater than 90 ohms indicates a failing or failed hot surface ignitor.

    This is a "Rule of Thumb". Some manufacturers have...
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    Very helpful. Thank you. I will use this set up...

    Very helpful. Thank you. I will use this set up from here forward.


    Sent from my iPhone using Tapatalk 2
  12. Replies
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    I'm not suggesting using my gauge as a...

    I'm not suggesting using my gauge as a measurement t of vacuum, but a junction point. I've been using a micron gauge for two decades to measure vacuum. If you don't use a manifold, digital or analog,...
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    Digital Gauges / Vacuum

    What are your thoughts on the use of Digital gauges during evacuation? I always had my analog's hooked up, but now that I use Digital, I'm more cautious based on my tool investment.
  14. You will need to contact a licensed HVAC...

    You will need to contact a licensed HVAC contractor or Electrician in your area to have the disconnect replaced. This is not something you want to be playing around with since you don't really know...
  15. Thread: oxy/acet

    by jpbhvac
    Replies
    32
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    1,526

    Not so sure about the dork aspect. Mine look like...

    Not so sure about the dork aspect. Mine look like regular sunglasses. My clear ones have the same frame but clear lenses. I want to be safe and look cool doing it!


    Sent from my iPhone using...
  16. Replies
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    Your system was pumped down. The drier was never...

    Your system was pumped down. The drier was never exposed to the outside air. NO need to replace. You can just let it go. There is more potential for damage if they come back and open it up now.

    ...
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    The drier must be replaced if outside the unit...

    The drier must be replaced if outside the unit (in the copper lines and not the unit itself if the unit was pumped down). If the system was evacuated or the old drier was ever exposed to the outside...
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    If you don't get a satisfactory response from the...

    If you don't get a satisfactory response from the owner, PLEASE make the necessary reports to Better Business Bureau, Angie's List, ext... This is how the professionals rise to top and the HACKS are...
  19. Thread: leak check

    by jpbhvac
    Replies
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    1,431

    Please do NOT do this!

    Please do NOT do this!
  20. Thread: leak check

    by jpbhvac
    Replies
    30
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    1,431

    No need to exceed 100 psi with a trace of r22. ...

    No need to exceed 100 psi with a trace of r22. Too much pressure and you'll just blow the Big Blue away from the leak instead of generating bubbles you can see. A trace of r22 mixed with your...
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    This is a hack job if not repaired properly. ...

    This is a hack job if not repaired properly. That board needs to be replaced with a Carrier/Bryant factory authorized control board. You should demand having the component replaced. But be...
  22. Thread: oxy/acet

    by jpbhvac
    Replies
    32
    Views
    1,526

    Safety glasses! Clear inside and tinted for...

    Safety glasses! Clear inside and tinted for outside/sun work. Now, I need to put my advice into personal practice.
  23. Thread: new HVAC guy

    by jpbhvac
    Replies
    3
    Views
    289

    If you are going to apprentice your way into the...

    If you are going to apprentice your way into the trade, piece of advice . . . WATCH, LISTEN, and ask QUESTIONS! NEVER think you know more than you really do because you don't know anything. Take...
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    If you add another, you should add another 14"....

    If you add another, you should add another 14". This will give you plenty of R/A. If you are concerned about the S/A, you need to have a Manual D calculation done to determine the specific need.

    ...
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    Definitely use 18" return. I would use a low...

    Definitely use 18" return. I would use a low restriction R/A grille. Stay away from stamp face grilles. The size of your grille may vary but you want need to move at least 1200 cfm.
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