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Forum: Tech to Tech Chat - Commercial

FOR TECHNICAL CHAT BETWEEN INDUSTRY WORKERS ONLY. NO AOP OR DIY** This forum is for Technical Chat in the Commercial Industry and only within the limits of the Open area Rules concerning DIY. Any technical chat that goes too far will be removed or moved to the Pro Area.

  1. Sticky Thread Sticky Threads

  2. Sticky Thread NO AOP posts here please. ONLY Tech to Tech chatter

    Started by Dad, 08-10-2011 04:34 PM
    • Replies: 0
    • Views: 5,655
    08-10-2011, 04:34 PM Go to last post
  1. Normal Thread Normal Threads

  2. Internal Bypass TXV?

    Started by 02JeepKing, 05-30-2013 08:44 PM
    • Replies: 4
    • Views: 777
    05-30-2013, 09:28 PM Go to last post
  3. Lennox Gurus

    Started by 1-Hvacdoc, 08-20-2011 09:53 AM
    • Replies: 4
    • Views: 2,009
    08-20-2011, 09:58 PM Go to last post
    • Replies: 4
    • Views: 1,151
    05-15-2012, 06:59 PM Go to last post
  4. Rtu and digicools.

    Started by 11crv, 05-29-2014 08:34 PM
    • Replies: 7
    • Views: 551
    05-30-2014, 12:46 PM Go to last post
  5. systems with dual tx valves and check valves

    Started by 12gauge, 07-26-2013 04:07 AM
    • Replies: 1
    • Views: 499
    07-26-2013, 11:34 PM Go to last post
  6. Trane YCD240 gas valve operation

    Started by 1966Chevy2, 10-05-2014 05:28 PM
    • Replies: 8
    • Views: 630
    10-07-2014, 10:52 AM Go to last post
  7. DX dehum makeup air units

    Started by 19characterusername, 07-12-2012 10:38 PM
    • Replies: 5
    • Views: 1,037
    07-22-2012, 10:06 PM Go to last post
  8. Trane E Machine Rebuild Info requested

    Started by 1SikLBZ, 08-28-2013 10:25 PM
    • Replies: 4
    • Views: 574
    10-01-2013, 11:10 AM Go to last post
  9. Pneumatic Receiver Controller P541

    Started by 1SikLBZ, 01-12-2015 09:24 PM
    • Replies: 3
    • Views: 355
    01-13-2015, 05:21 PM Go to last post
  10. Carrier 50AK 50 Ton Unit

    Started by 1SikLBZ, 03-23-2015 09:55 PM
    • Replies: 7
    • Views: 464
    03-26-2015, 04:18 PM Go to last post
  11. Hmm Unloaders

    Started by 1tonn, 03-23-2012 08:44 PM
    • Replies: 3
    • Views: 946
    03-23-2012, 09:49 PM Go to last post
  12. Nu-Calgon Moisture Removal

    Started by 1tonn, 08-08-2013 11:54 AM
    • Replies: 5
    • Views: 631
    08-08-2013, 07:13 PM Go to last post
    • Replies: 12
    • Views: 1,144
    09-09-2013, 02:15 AM Go to last post
  13. I hate phantom voltage

    Started by 2sac, 12-09-2011 12:36 AM
    • Replies: 8
    • Views: 1,112
    12-10-2011, 09:45 AM Go to last post
  14. Oil in a gas line

    Started by 2sac, 01-05-2012 10:36 PM
    • Replies: 5
    • Views: 790
    01-23-2012, 08:52 PM Go to last post
  15. Need a manual and/or schematic for GE

    Started by 2sac, 01-16-2013 07:54 PM
    • Replies: 3
    • Views: 616
    01-18-2013, 02:22 AM Go to last post
  16. Confused Weil McLain GV-6 No HSI voltage

    Started by 2story, 09-09-2013 10:10 PM
    • Replies: 0
    • Views: 354
    09-09-2013, 10:10 PM Go to last post
  17. Trane Voyager, intermitant No Heat

    Started by 2wings, 12-31-2013 10:31 AM
    3 Pages
    1 2 3
    • Replies: 27
    • Views: 2,255
    01-03-2014, 05:23 PM Go to last post
  18. how do i tell when my vac pump is going bad?

    Started by 3800tom, 08-29-2011 01:37 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,603
    11-19-2011, 01:16 PM Go to last post
  19. Adjust an EPR w/o a pressure tap?

    Started by 3800tom, 09-01-2011 12:13 PM
    • Replies: 10
    • Views: 1,508
    02-25-2013, 10:15 PM Go to last post
  20. GPM for Airflow CCT-30 Glycol System?

    Started by 3gs, 08-14-2014 10:33 AM
    • Replies: 2
    • Views: 488
    08-21-2014, 12:04 PM Go to last post
  21. Lennox 51M42 Tstat not cycling poperly.

    Started by 3rdlaw, 03-17-2015 10:29 PM
    • Replies: 1
    • Views: 211
    03-17-2015, 10:42 PM Go to last post
  22. McQuay water source heat pump

    Started by 461pat, 11-03-2011 08:09 AM
    2 Pages
    1 2
    • Replies: 20
    • Views: 4,013
    03-02-2012, 10:02 PM Go to last post
  23. Confused Control Head on Variable Speed pumping systems?

    Started by 500GPMdT, 05-28-2013 02:05 PM
    • Replies: 9
    • Views: 1,147
    06-03-2013, 04:06 PM Go to last post
  24. WSHP & fluid cooler education

    Started by 500GPMdT, 07-01-2013 09:04 PM
    • Replies: 1
    • Views: 589
    07-02-2013, 10:23 AM Go to last post
  25. Trane Intellipak EF problem

    Started by 501miller, 03-15-2013 09:00 AM
    • Replies: 9
    • Views: 1,091
    04-02-2013, 12:45 AM Go to last post
  26. Daikin VRV's or Mitsubiski VRD

    Started by 50Panhead, 03-20-2013 04:29 PM
    • Replies: 0
    • Views: 479
    03-20-2013, 04:29 PM Go to last post
  27. older Lennox LCA 240

    Started by 75Porsche, 10-06-2014 04:43 PM
    • Replies: 8
    • Views: 657
    10-07-2014, 06:30 PM Go to last post
  28. Sealed or replaceable core?

    Started by 787REFMEC, 02-05-2015 09:10 PM
    • Replies: 10
    • Views: 615
    02-08-2015, 08:36 AM Go to last post
  29. mitsubishi mr slim restriction

    Started by 7dayprogramable, 09-28-2012 06:00 PM
    • Replies: 1
    • Views: 739
    09-28-2012, 07:42 PM Go to last post
  30. Any experience with this stat?

    Started by 7point62, 06-19-2013 06:04 PM
    • Replies: 2
    • Views: 477
    06-25-2013, 10:16 PM Go to last post
  31. blast chillers

    Started by 85goldwing, 08-16-2011 10:30 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 2,397
    09-28-2011, 11:40 PM Go to last post
  32. Trane Model YCH060C1L0BE

    Started by 907Controls, 02-20-2013 08:00 PM
    • Replies: 0
    • Views: 441
    02-20-2013, 08:00 PM Go to last post
  33. Ammonia in the air

    Started by 929rc51, 04-13-2014 07:23 PM
    • Replies: 6
    • Views: 622
    04-13-2014, 08:33 PM Go to last post
  34. JACE to RTU wiring

    Started by aamtech, 03-10-2014 04:10 PM
    • Replies: 2
    • Views: 467
    03-11-2014, 01:26 PM Go to last post
  35. High side pressure higher than normal...

    Started by aaronkim92, 04-25-2012 12:56 PM
    3 Pages
    1 2 3
    • Replies: 29
    • Views: 3,659
    05-08-2012, 10:55 AM Go to last post
  36. Low Suction Compressor #1 StulZ VHS

    Started by aaronmorgan19, 11-20-2011 12:51 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 966
    11-23-2011, 10:01 AM Go to last post
  37. Melted contactor, Lennox 6 ton rtu

    Started by Aaronn, 07-01-2013 11:33 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 1,572
    07-04-2013, 08:41 AM Go to last post
  38. low superheat control

    Started by Aaronn, 02-15-2014 12:58 AM
    • Replies: 1
    • Views: 516
    02-15-2014, 08:48 AM Go to last post
  39. JC ZJ12

    Started by AB815SC, 06-03-2013 08:53 PM
    • Replies: 5
    • Views: 502
    06-08-2013, 09:23 AM Go to last post
  40. RTU's not cooling the building enough

    Started by abcando, 07-06-2012 12:41 AM
    5 Pages
    1 2 3 4 5
    • Replies: 61
    • Views: 7,349
    07-14-2012, 09:33 PM Go to last post
  41. LG VRF system

    Started by abcets, 04-02-2014 08:35 AM
    • Replies: 8
    • Views: 649
    04-05-2014, 02:02 AM Go to last post
  42. Trane Fan powered VAV box with electric heat not heating

    Started by abcwiguy, 11-13-2014 07:02 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 1,504
    11-18-2014, 09:42 PM Go to last post
  43. Scottsman flaker

    Started by Abrnth3, 03-15-2013 01:16 PM
    • Replies: 1
    • Views: 465
    03-16-2013, 08:53 AM Go to last post
  44. Frown R22 Replacement

    Started by Abrnth3, 03-15-2013 01:03 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 3,053
    06-23-2013, 02:31 PM Go to last post
  45. Trane Voyager

    Started by Abrnth3, 06-13-2013 11:29 AM
    3 Pages
    1 2 3
    • Replies: 35
    • Views: 3,247
    06-19-2013, 09:07 PM Go to last post
  46. Evap Coil Face Leaks

    Started by Absolut0, 02-18-2015 09:43 PM
    • Replies: 7
    • Views: 997
    02-19-2015, 11:30 PM Go to last post
  47. Copeland semi hermetic

    Started by Absolutez3r0, 04-03-2015 02:26 PM
    4 Pages
    1 2 3 4
    • Replies: 48
    • Views: 1,501
    04-20-2015, 10:19 PM Go to last post
  48. Could clicking relay cause overload

    Started by absolutezerosev, 08-05-2014 01:03 AM
    2 Pages
    1 2
    • Replies: 24
    • Views: 1,034
    08-13-2014, 07:52 PM Go to last post
  49. Confused Formicary Corrosion

    Started by acdave17, 11-29-2011 09:54 PM
    • Replies: 4
    • Views: 1,022
    12-08-2011, 10:07 PM Go to last post

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