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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: 11,225
    08-10-2011, 04:34 PM Go to last post
  1. Normal Thread Normal Threads

    • Replies: 30
    • Views: 2,770
    10-29-2017, 08:15 PM Go to last post
  2. Internal Bypass TXV?

    Started by 02JeepKing, 05-30-2013 08:44 PM
    • Replies: 4
    • Views: 1,701
    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: 4,318
    08-20-2011, 09:58 PM Go to last post
    • Replies: 4
    • Views: 1,959
    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: 2,441
    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: 648
    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: 448
    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: 1,325
    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: 1,139
    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: 1,974
    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: 1,851
    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: 1,478
    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: 1,937
    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: 1,838
    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: 1,810
    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: 1,528
    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: 2,691
    11-26-2016, 04:34 PM Go to last post
    • Replies: 12
    • Views: 2,503
    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: 9,859
    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: 484
    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: 428
    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: 2,810
    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: 1,137
    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: 1,317
    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: 915
    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: 652
    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: 5,651
    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: 4,573
    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: 2,689
    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: 1,014
    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: 651
    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: 8,031
    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: 1,773
    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: 3,037
    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: 967
    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: 2,295
    04-02-2013, 12:45 AM Go to last post
  35. Hauling 10+ filters on rooftop safely?

    Started by 503 Hvac, 11-18-2017 08:24 PM
    • Replies: 10
    • Views: 371
    11-19-2017, 11:32 AM Go to last post
  36. Daikin VRV's or Mitsubiski VRD

    Started by 50Panhead, 03-20-2013 04:29 PM
    • Replies: 0
    • Views: 991
    03-20-2013, 04:29 PM Go to last post
  37. 120V Commercial Honeywell thermostat install question

    Started by 520, 06-10-2016 06:23 PM
    • Replies: 3
    • Views: 915
    06-16-2016, 06:41 PM Go to last post
  38. COMMERCIAL MAINTENANCE, WHAT DO YOU CHECK?

    Started by 6Ksuperheat, 07-03-2017 06:30 AM
    • Replies: 10
    • Views: 789
    07-05-2017, 01:09 PM Go to last post
  39. United Refrigeration recovery cylinder problems

    Started by 71CHOPS, 09-19-2016 09:51 AM
    3 Pages
    1 2 3
    • Replies: 29
    • Views: 4,254
    10-12-2016, 09:47 AM Go to last post
  40. older Lennox LCA 240

    Started by 75Porsche, 10-06-2014 04:43 PM
    • Replies: 8
    • Views: 2,148
    10-07-2014, 06:30 PM Go to last post
  41. American standard cast iron boiler

    Started by 77 highboy, 10-17-2016 09:45 AM
    • Replies: 7
    • Views: 1,236
    10-17-2016, 10:23 PM Go to last post
  42. Sealed or replaceable core?

    Started by 787REFMEC, 02-05-2015 09:10 PM
    • Replies: 10
    • Views: 1,918
    02-08-2015, 08:36 AM Go to last post
  43. mitsubishi mr slim restriction

    Started by 7dayprogramable, 09-28-2012 06:00 PM
    • Replies: 1
    • Views: 1,222
    09-28-2012, 07:42 PM Go to last post
  44. Any experience with this stat?

    Started by 7point62, 06-19-2013 06:04 PM
    • Replies: 2
    • Views: 828
    06-25-2013, 10:16 PM Go to last post
  45. blast chillers

    Started by 85goldwing, 08-16-2011 10:30 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 3,680
    09-28-2011, 11:40 PM Go to last post
  46. Trane Model YCH060C1L0BE

    Started by 907Controls, 02-20-2013 08:00 PM
    • Replies: 0
    • Views: 1,056
    02-20-2013, 08:00 PM Go to last post
  47. Blood bank cooler not cooling

    Started by 91jschwing, 08-29-2017 05:22 AM
    • Replies: 6
    • Views: 499
    08-31-2017, 12:36 AM Go to last post
  48. Ammonia in the air

    Started by 929rc51, 04-13-2014 07:23 PM
    • Replies: 6
    • Views: 1,285
    04-13-2014, 08:33 PM Go to last post

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