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  1. Thread: Aaon Gas Pack

    by Tech83
    Replies
    13
    Views
    406

    Thank You Gp71 for info on the 29 volts can be a...

    Thank You Gp71 for info on the 29 volts can be a issue. Think I need to change a few tap settings also. Didn't know they were that tight but It makes sense.
  2. Replies
    8
    Views
    466

    Did you purge with nitrogen thru the line set...

    Did you purge with nitrogen thru the line set from one side to the other? I would look at kinked or blockage in liquid line. (Have also heard guys forgetting to pull plugs on new driers, the new...
  3. Also if your unsure of your SLT you can always go...

    Also if your unsure of your SLT you can always go to evap to get temp. Sometimes adding refrigerant can lead to arrant reading, depending on temperature probe placement.
  4. I have learned to make a mark on the fan blade at...

    I have learned to make a mark on the fan blade at either the bottom of the venturi or the closest point that it touches the venturi, or the top of the blade to ensure it is set to factory specs for...
  5. Thread: Economizer Help

    by Tech83
    Replies
    9
    Views
    651

    Beat me to it slctech, Just downloaded W7212...

    Beat me to it slctech, Just downloaded W7212 info. Was looking for an email address. WTG. Love Google on the job when there are no schematics or info on what your looking at.
  6. Thread: Economizer Help

    by Tech83
    Replies
    9
    Views
    651

    Should of had power to operate the motor (with...

    Should of had power to operate the motor (with green light). Sometime you need to disconnect motor from the damper and make sure the damper is not jammed up (Econ doesn't gets used that often,...
  7. Replies
    32
    Views
    1,441

    When the evap is higher than the coil you can do...

    When the evap is higher than the coil you can do one of two things(without putting in a non-bleed TXV or solenoid valve) install the lines so they go higher than the coil and then drop down into the...
  8. Thread: newbie question

    by Tech83
    Replies
    25
    Views
    948

    Still lots of guys out there that only charge by...

    Still lots of guys out there that only charge by pressure. Why, I don't know. Thats the way they were taught. Example was called to help out a maint tech today, said he added 3 pounds, 410a and...
  9. Replies
    32
    Views
    1,441

    I would agree, leave it. But you just learned a...

    I would agree, leave it. But you just learned a nice lesson on checking everything on a unit before you replace a component or components (if possible). So it doesn't come back and bite you. Good job...
  10. Replies
    52
    Views
    5,370

    Wish my electricians wiring my jobs would of been...

    Wish my electricians wiring my jobs would of been this "enthusiastic" for FAN 410. Would not have had so many over loaded and star buses (even when you show them its 1 set in 1 set out "Daisy Chain)...
  11. Replies
    10
    Views
    445

    Fixed it for the customer after the 1 Yr warranty...

    Fixed it for the customer after the 1 Yr warranty was up. :whistle:
  12. Replies
    10
    Views
    445

    Just remember, even though you know it will work...

    Just remember, even though you know it will work better for the customer (programming a certain way). You will not get it past the engineer NO MATTER what. Study the specs and sequence of operation,...
  13. Replies
    12
    Views
    1,058

    I always add a tee on the suction and liquid if...

    I always add a tee on the suction and liquid if not provided on the line just to see what was/is going on. Sounds like you have a nasty restriction. GL
  14. Replies
    10
    Views
    2,267

    Have the same issue, mine is showing trips on...

    Have the same issue, mine is showing trips on LDT, A/H is a TAM7 but no alerts on the boards?
  15. Replies
    12
    Views
    1,691

    Need any one in SW Fl?

    Need any one in SW Fl?
  16. Thread: What Voltage

    by Tech83
    Replies
    19
    Views
    1,054

    208/230 3ph & 460/480 3 ph. Just watch your...

    208/230 3ph & 460/480 3 ph. Just watch your incoming voltage for setting your secondary outputs. A lot of units made @ Carrier are universal so they set there units up for 460. Most EC produce 480+....
  17. Replies
    22
    Views
    1,581

    Don't forget about TD across the coil. Goes along...

    Don't forget about TD across the coil. Goes along the same lines as what Todd is saying.
  18. You might be surprised just how many times the...

    You might be surprised just how many times the HVAC Engineer, and thus the Controls Engineer, specifies this and that. Which does NOT satisfy what the customer expects or wants. BUT ... we've gotta...
  19. Replies
    19
    Views
    889

    Most package units have a weigh in factory charge...

    Most package units have a weigh in factory charge on the name plate for both stages.
  20. Replies
    19
    Views
    889

    What was the tonnage on your 2 stage unit. Did by...

    What was the tonnage on your 2 stage unit. Did by chance you recover both stages at once? Leaving only vapor in both stages?
  21. Replies
    70
    Views
    3,652

    1, never add liquid to low side of a system. You...

    1, never add liquid to low side of a system. You can slug a compressor and kill it. Agree to a point, you can't just open the low side and walk away, you will damage the compressor. Monitoring and...
  22. Replies
    23
    Views
    1,425

    I'm gonna have to disagree with this. X2 ...

    I'm gonna have to disagree with this.

    X2

    This is Resy AC not Refer AC. 100 % of our units with TXV are charged per Sub Cooling, and backed up (hopefully with wb, db & sh ) temps.
  23. Sound like the person that called didn't have...

    Sound like the person that called didn't have there story right or fixed it themself. (ooops someone shut wrong breaker off). Trying to cover their behind!
  24. I find far too many guys being thrown out into...

    I find far too many guys being thrown out into the field without the VERY FIRST clue about what to do, and their supervisors seems complacent enough to tolerate whatever chaos they produce.

    X2
  25. Replies
    30
    Views
    1,419

    Agree allen38, Most techs I see now are bigger...

    Agree allen38,
    Most techs I see now are bigger flame = quicker job, Most tech's I see don't have the knowledge of finese and letting that little bit of heat from the torch do the work for them, by...
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