Search:

Type: Posts; User: mcjo tech

Page 1 of 20 1 2 3 4

Search: Search took 0.03 seconds.

  1. Replies
    15
    Views
    1,471

    If you disconnect the O wire at the air handler...

    If you disconnect the O wire at the air handler from the stat and condenser it is still in cooling. Right?

    But if you re connect the O wires at the air handler and disconnect the O wire at the...
  2. Replies
    15
    Views
    1,471

    It also would appear that your R or Y to O short...

    It also would appear that your R or Y to O short is occurring between your air handler and your HP condenser (not from t stat to air handler) since you disconnected the O wiring at the air handler...
  3. Replies
    15
    Views
    1,471

    Sounds like you are getting voltage to the...

    Sounds like you are getting voltage to the reversing valve during call for heat.

    You noted that the AC (cooling) works fine.

    You state then when you remove O wiring the reversing valve goes...
  4. Replies
    5
    Views
    545

    Put a lawn sprinkler on the condenser till...

    Put a lawn sprinkler on the condenser till tomorrow.
  5. Replies
    52
    Views
    2,940

    Was annoyingly slow last few days. Seems to be...

    Was annoyingly slow last few days. Seems to be fixed now.
  6. Replies
    5
    Views
    395

    Thanks Good info.

    Thanks

    Good info.
  7. Replies
    5
    Views
    395

    Thanks, good advice. We have a lot of material...

    Thanks, good advice.

    We have a lot of material on our systems so I can use it as a reference.

    We have Norlake, Biocold, Enviro Systems, Cascading ultra lows and many more.

    We do have DDC but...
  8. Replies
    5
    Views
    395

    Help with enviromental control room

    With my new job I am running in to some different types of systems I am not overly familiar with and could use some help understanding what is normal operation for some of them.

    I am currently...
  9. Replies
    2
    Views
    357

    Not sure if this something that might interest...

    Not sure if this something that might interest you but certainly worth a look.

    Version for Android also.


    https://itunes.apple.com/us/app/hvac-flat-rate/id586189638?ls=1&mt=8
  10. Thread: Brutal!!!!

    by mcjo tech
    Replies
    74
    Views
    4,249

    Spent the last 20 years working the Tucson AZ...

    Spent the last 20 years working the Tucson AZ area for private companies where techs are working 7 days a week this time of year so I feel your pain.

    First year working for the University here.
    ...
  11. Replies
    17
    Views
    1,107

    I cut the rag into small 1 to 2 inch strips. ...

    I cut the rag into small 1 to 2 inch strips.

    Makes it easier to wrap them tight and keeps them out of the way of that lower vertical braze joint.
  12. Low pressure cutout Once started it draws...

    Low pressure cutout

    Once started it draws pressure down and shuts compressor and fan out.

    Then equalizes and resets low pressure control and repeats this malfunction cycle.
  13. Replies
    44
    Views
    3,564

    Problem solving is what we do. Had my lead...

    Problem solving is what we do.

    Had my lead show me an air dryer mounted above the 8 cylinder air compressor that dries control air for a 6 story pneumatic Johnson Control System.

    He wanted to...
  14. Replies
    6
    Views
    699

    Sounds good. Good to know. Didn't know Rheem was...

    Sounds good. Good to know. Didn't know Rheem was having such problems with their boards.

    Just seemed similar to infinity communication problems.

    Glad you got it fixed.
  15. Replies
    6
    Views
    699

    I have seen this a number of times on infinity...

    I have seen this a number of times on infinity series.

    On these systems it does say when they are not communicating but not sure about the rheems.

    On the infinitys when it has a communicating...
  16. Replies
    6
    Views
    699

    Bad communicating wire to outdoor unit. It can...

    Bad communicating wire to outdoor unit. It can ohm good but still not work. Run new temporary wire to condenser and see what happens.
  17. I know. I gave it a half a$$ed effort about 8...

    I know.

    I gave it a half a$$ed effort about 8 months ago. Tried to find or make a math formula for it but was unsuccessful.

    Seems we will need to input the chart and then pull averages out of...
  18. Mark I am going to be doing an update to...

    Mark

    I am going to be doing an update to include some newer refrigerants like MO99 and R427A later this year so may go ahead and add the TEET into the calculator at that time.

    My new HVAC Flat...
  19. Replies
    25
    Views
    1,971

    A data collection instrument that bluetooths to a...

    A data collection instrument that bluetooths to a superheat/subcooling and Teet calculation app coded in Android Java and Apple IOS with built in diagnostics.

    Interesting, very interesting.
  20. Replies
    2
    Views
    661

    H-Talk Server Crashing

    This is second time today your server has been overloaded or crashed.

    What is up?

    You may need to consider another hosting company or a larger capacity server.

    Not something you want to...
  21. Replies
    7
    Views
    531

    I like Bitzer.

    I like Bitzer.
  22. Thread: AcoTruck App

    by mcjo tech
    Replies
    8
    Views
    850

    Thanks Mark I appreciate the heads up.

    Thanks Mark

    I appreciate the heads up.
  23. Thread: AcoTruck App

    by mcjo tech
    Replies
    8
    Views
    850

    Huh? What? Where?

    Huh?

    What?

    Where?
  24. Thread: AcoTruck App

    by mcjo tech
    Replies
    8
    Views
    850

    I sent you a PM. Search for ExactCharge in...

    I sent you a PM.

    Search for ExactCharge in itunes.

    https://itunes.apple.com/us/app/hvac-flat-rate-lite/id588275350?mt=8
  25. Thread: AcoTruck App

    by mcjo tech
    Replies
    8
    Views
    850

    I think you have to purchase Acowin software to...

    I think you have to purchase Acowin software to use it.

    A grand or two should cover it. :grin2:
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event