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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: 11,029
    08-10-2011, 04:34 PM Go to last post
  1. Normal Thread Normal Threads

    • Replies: 27
    • Views: 1,959
    07-18-2017, 03:05 AM Go to last post
  2. Internal Bypass TXV?

    Started by 02JeepKing, 05-30-2013 08:44 PM
    • Replies: 4
    • Views: 1,623
    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: 4,162
    08-20-2011, 09:58 PM Go to last post
    • Replies: 4
    • Views: 1,874
    05-15-2012, 06:59 PM Go to last post
  4. Chattering gas valve

    Started by 11austinlee, 01-14-2017 08:52 AM
    3 Pages
    1 2 3
    • Replies: 26
    • Views: 1,996
    01-16-2017, 10:53 PM Go to last post
  5. Trane CTI Controls

    Started by 11austinlee, 02-16-2017 02:02 PM
    • Replies: 4
    • Views: 577
    02-16-2017, 04:44 PM Go to last post
  6. LENNNOX PRODIGY CONTROLLER

    Started by 11austinlee, 08-08-2017 12:45 PM
    • Replies: 5
    • Views: 389
    08-11-2017, 06:42 PM Go to last post
  7. Rtu and digicools.

    Started by 11crv, 05-29-2014 08:34 PM
    • Replies: 7
    • Views: 1,290
    05-30-2014, 12:46 PM Go to last post
  8. systems with dual tx valves and check valves

    Started by 12gauge, 07-26-2013 04:07 AM
    • Replies: 2
    • Views: 1,072
    02-03-2017, 12:16 AM Go to last post
  9. Trane YCD240 gas valve operation

    Started by 1966Chevy2, 10-05-2014 05:28 PM
    • Replies: 8
    • Views: 1,857
    10-07-2014, 10:52 AM Go to last post
  10. DX dehum makeup air units

    Started by 19characterusername, 07-12-2012 10:38 PM
    • Replies: 5
    • Views: 1,779
    07-22-2012, 10:06 PM Go to last post
  11. Trane E Machine Rebuild Info requested

    Started by 1SikLBZ, 08-28-2013 10:25 PM
    • Replies: 4
    • Views: 1,396
    10-01-2013, 11:10 AM Go to last post
  12. Pneumatic Receiver Controller P541

    Started by 1SikLBZ, 01-12-2015 09:24 PM
    • Replies: 3
    • Views: 1,815
    01-13-2015, 05:21 PM Go to last post
  13. Carrier 50AK 50 Ton Unit

    Started by 1SikLBZ, 03-23-2015 09:55 PM
    • Replies: 7
    • Views: 1,740
    03-26-2015, 04:18 PM Go to last post
  14. Hmm Unloaders

    Started by 1tonn, 03-23-2012 08:44 PM
    • Replies: 3
    • Views: 1,737
    03-23-2012, 09:49 PM Go to last post
  15. Nu-Calgon Moisture Removal

    Started by 1tonn, 08-08-2013 11:54 AM
    • Replies: 5
    • Views: 1,467
    08-08-2013, 07:13 PM Go to last post
  16. RTU with ERV

    Started by 24/7mechanical, 10-23-2016 06:04 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 2,272
    11-26-2016, 04:34 PM Go to last post
    • Replies: 12
    • Views: 2,353
    09-09-2013, 02:15 AM Go to last post
  17. What am I missing?

    Started by 280zx, 07-22-2015 09:06 PM
    4 Pages
    1 2 3 4
    • Replies: 39
    • Views: 9,289
    02-03-2017, 12:48 AM Go to last post
  18. Need some help

    Started by 280zx, 09-14-2017 08:10 PM
    • Replies: 6
    • Views: 295
    09-15-2017, 06:42 PM Go to last post
  19. Charging Trane RTU

    Started by 280zx, 08-16-2017 11:03 PM
    • Replies: 5
    • Views: 371
    08-17-2017, 08:43 PM Go to last post
  20. I hate phantom voltage

    Started by 2sac, 12-09-2011 12:36 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,664
    02-05-2017, 11:18 AM Go to last post
  21. Oil in a gas line

    Started by 2sac, 01-05-2012 10:36 PM
    • Replies: 5
    • Views: 1,126
    01-23-2012, 08:52 PM Go to last post
  22. Need a manual and/or schematic for GE

    Started by 2sac, 01-16-2013 07:54 PM
    • Replies: 3
    • Views: 1,266
    01-18-2013, 02:22 AM Go to last post
  23. 3 phase motor testing.

    Started by 2smoke263, 03-15-2017 06:14 PM
    • Replies: 6
    • Views: 793
    03-16-2017, 12:20 PM Go to last post
  24. Confused Weil McLain GV-6 No HSI voltage

    Started by 2story, 09-09-2013 10:10 PM
    • Replies: 0
    • Views: 631
    09-09-2013, 10:10 PM Go to last post
  25. Trane Voyager, intermitant No Heat

    Started by 2wings, 12-31-2013 10:31 AM
    3 Pages
    1 2 3
    • Replies: 27
    • Views: 5,256
    01-03-2014, 05:23 PM Go to last post
  26. 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: 4,365
    11-19-2011, 01:16 PM Go to last post
  27. Adjust an EPR w/o a pressure tap?

    Started by 3800tom, 09-01-2011 12:13 PM
    • Replies: 10
    • Views: 2,595
    02-25-2013, 10:15 PM Go to last post
  28. GPM for Airflow CCT-30 Glycol System?

    Started by 3gs, 08-14-2014 10:33 AM
    • Replies: 2
    • Views: 972
    08-21-2014, 12:04 PM Go to last post
  29. Lennox 51M42 Tstat not cycling poperly.

    Started by 3rdlaw, 03-17-2015 10:29 PM
    • Replies: 1
    • Views: 622
    03-17-2015, 10:42 PM Go to last post
  30. McQuay water source heat pump

    Started by 461pat, 11-03-2011 08:09 AM
    2 Pages
    1 2
    • Replies: 20
    • Views: 7,778
    03-02-2012, 10:02 PM Go to last post
  31. Mr. Slim Error code "EC" fix????

    Started by 4x4grey88, 09-19-2015 10:41 PM
    • Replies: 4
    • Views: 1,621
    09-20-2015, 08:29 AM Go to last post
  32. Confused Control Head on Variable Speed pumping systems?

    Started by 500GPMdT, 05-28-2013 02:05 PM
    • Replies: 9
    • Views: 2,798
    06-03-2013, 04:06 PM Go to last post
  33. WSHP & fluid cooler education

    Started by 500GPMdT, 07-01-2013 09:04 PM
    • Replies: 1
    • Views: 935
    07-02-2013, 10:23 AM Go to last post
  34. Trane Intellipak EF problem

    Started by 501miller, 03-15-2013 09:00 AM
    • Replies: 9
    • Views: 2,170
    04-02-2013, 12:45 AM Go to last post
  35. Daikin VRV's or Mitsubiski VRD

    Started by 50Panhead, 03-20-2013 04:29 PM
    • Replies: 0
    • Views: 959
    03-20-2013, 04:29 PM Go to last post
  36. 120V Commercial Honeywell thermostat install question

    Started by 520, 06-10-2016 06:23 PM
    • Replies: 3
    • Views: 844
    06-16-2016, 06:41 PM Go to last post
  37. COMMERCIAL MAINTENANCE, WHAT DO YOU CHECK?

    Started by 6Ksuperheat, 07-03-2017 06:30 AM
    • Replies: 10
    • Views: 702
    07-05-2017, 01:09 PM Go to last post
  38. United Refrigeration recovery cylinder problems

    Started by 71CHOPS, 09-19-2016 09:51 AM
    3 Pages
    1 2 3
    • Replies: 29
    • Views: 3,804
    10-12-2016, 09:47 AM Go to last post
  39. older Lennox LCA 240

    Started by 75Porsche, 10-06-2014 04:43 PM
    • Replies: 8
    • Views: 1,994
    10-07-2014, 06:30 PM Go to last post
  40. American standard cast iron boiler

    Started by 77 highboy, 10-17-2016 09:45 AM
    • Replies: 7
    • Views: 1,008
    10-17-2016, 10:23 PM Go to last post
  41. Sealed or replaceable core?

    Started by 787REFMEC, 02-05-2015 09:10 PM
    • Replies: 10
    • Views: 1,785
    02-08-2015, 08:36 AM Go to last post
  42. mitsubishi mr slim restriction

    Started by 7dayprogramable, 09-28-2012 06:00 PM
    • Replies: 1
    • Views: 1,198
    09-28-2012, 07:42 PM Go to last post
  43. Any experience with this stat?

    Started by 7point62, 06-19-2013 06:04 PM
    • Replies: 2
    • Views: 799
    06-25-2013, 10:16 PM Go to last post
  44. blast chillers

    Started by 85goldwing, 08-16-2011 10:30 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 3,624
    09-28-2011, 11:40 PM Go to last post
  45. Trane Model YCH060C1L0BE

    Started by 907Controls, 02-20-2013 08:00 PM
    • Replies: 0
    • Views: 1,002
    02-20-2013, 08:00 PM Go to last post
  46. Blood bank cooler not cooling

    Started by 91jschwing, 08-29-2017 05:22 AM
    • Replies: 6
    • Views: 390
    08-31-2017, 12:36 AM Go to last post
  47. Ammonia in the air

    Started by 929rc51, 04-13-2014 07:23 PM
    • Replies: 6
    • Views: 1,222
    04-13-2014, 08:33 PM Go to last post
  48. copper to brass

    Started by 9live, 06-23-2016 11:00 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 1,977
    06-30-2016, 07:47 PM Go to last post

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