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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: 9,076
    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: 1,216
    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: 3,361
    08-20-2011, 09:58 PM Go to last post
    • Replies: 4
    • Views: 1,567
    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: 1,064
    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: 702
    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: 1,592
    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: 1,496
    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: 1,093
    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: 1,258
    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: 1,359
    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: 1,354
    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: 1,175
    08-08-2013, 07:13 PM Go to last post
    • Replies: 12
    • Views: 1,929
    09-09-2013, 02:15 AM Go to last post
  13. What am I missing?

    Started by 280zx, 07-22-2015 09:06 PM
    3 Pages
    1 2 3
    • Replies: 38
    • Views: 6,038
    09-01-2015, 08:43 PM Go to last post
  14. I hate phantom voltage

    Started by 2sac, 12-09-2011 12:36 AM
    • Replies: 8
    • Views: 1,506
    12-10-2011, 09:45 AM Go to last post
  15. Oil in a gas line

    Started by 2sac, 01-05-2012 10:36 PM
    • Replies: 5
    • Views: 1,017
    01-23-2012, 08:52 PM Go to last post
  16. Need a manual and/or schematic for GE

    Started by 2sac, 01-16-2013 07:54 PM
    • Replies: 3
    • Views: 1,004
    01-18-2013, 02:22 AM Go to last post
  17. Confused Weil McLain GV-6 No HSI voltage

    Started by 2story, 09-09-2013 10:10 PM
    • Replies: 0
    • Views: 529
    09-09-2013, 10:10 PM Go to last post
  18. Trane Voyager, intermitant No Heat

    Started by 2wings, 12-31-2013 10:31 AM
    3 Pages
    1 2 3
    • Replies: 27
    • Views: 4,019
    01-03-2014, 05:23 PM Go to last post
  19. 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: 3,483
    11-19-2011, 01:16 PM Go to last post
  20. Adjust an EPR w/o a pressure tap?

    Started by 3800tom, 09-01-2011 12:13 PM
    • Replies: 10
    • Views: 2,205
    02-25-2013, 10:15 PM Go to last post
  21. GPM for Airflow CCT-30 Glycol System?

    Started by 3gs, 08-14-2014 10:33 AM
    • Replies: 2
    • Views: 794
    08-21-2014, 12:04 PM Go to last post
  22. Lennox 51M42 Tstat not cycling poperly.

    Started by 3rdlaw, 03-17-2015 10:29 PM
    • Replies: 1
    • Views: 483
    03-17-2015, 10:42 PM Go to last post
  23. McQuay water source heat pump

    Started by 461pat, 11-03-2011 08:09 AM
    2 Pages
    1 2
    • Replies: 20
    • Views: 6,058
    03-02-2012, 10:02 PM Go to last post
  24. Mr. Slim Error code "EC" fix????

    Started by 4x4grey88, 09-19-2015 10:41 PM
    • Replies: 4
    • Views: 1,048
    09-20-2015, 08:29 AM Go to last post
  25. Confused Control Head on Variable Speed pumping systems?

    Started by 500GPMdT, 05-28-2013 02:05 PM
    • Replies: 9
    • Views: 2,003
    06-03-2013, 04:06 PM Go to last post
  26. WSHP & fluid cooler education

    Started by 500GPMdT, 07-01-2013 09:04 PM
    • Replies: 1
    • Views: 790
    07-02-2013, 10:23 AM Go to last post
  27. Trane Intellipak EF problem

    Started by 501miller, 03-15-2013 09:00 AM
    • Replies: 9
    • Views: 1,691
    04-02-2013, 12:45 AM Go to last post
  28. Daikin VRV's or Mitsubiski VRD

    Started by 50Panhead, 03-20-2013 04:29 PM
    • Replies: 0
    • Views: 756
    03-20-2013, 04:29 PM Go to last post
  29. 120V Commercial Honeywell thermostat install question

    Started by 520, 06-10-2016 06:23 PM
    • Replies: 3
    • Views: 436
    06-16-2016, 06:41 PM Go to last post
  30. United Refrigeration recovery cylinder problems

    Started by 71CHOPS, 09-19-2016 09:51 AM
    2 Pages
    1 2
    • Replies: 22
    • Views: 802
    Yesterday, 01:50 PM Go to last post
  31. older Lennox LCA 240

    Started by 75Porsche, 10-06-2014 04:43 PM
    • Replies: 8
    • Views: 1,555
    10-07-2014, 06:30 PM Go to last post
  32. Sealed or replaceable core?

    Started by 787REFMEC, 02-05-2015 09:10 PM
    • Replies: 10
    • Views: 1,564
    02-08-2015, 08:36 AM Go to last post
  33. mitsubishi mr slim restriction

    Started by 7dayprogramable, 09-28-2012 06:00 PM
    • Replies: 1
    • Views: 1,034
    09-28-2012, 07:42 PM Go to last post
  34. Any experience with this stat?

    Started by 7point62, 06-19-2013 06:04 PM
    • Replies: 2
    • Views: 682
    06-25-2013, 10:16 PM Go to last post
  35. blast chillers

    Started by 85goldwing, 08-16-2011 10:30 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 3,269
    09-28-2011, 11:40 PM Go to last post
  36. Trane Model YCH060C1L0BE

    Started by 907Controls, 02-20-2013 08:00 PM
    • Replies: 0
    • Views: 743
    02-20-2013, 08:00 PM Go to last post
  37. Ammonia in the air

    Started by 929rc51, 04-13-2014 07:23 PM
    • Replies: 6
    • Views: 1,024
    04-13-2014, 08:33 PM Go to last post
  38. copper to brass

    Started by 9live, 06-23-2016 11:00 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 1,061
    06-30-2016, 07:47 PM Go to last post
  39. JACE to RTU wiring

    Started by aamtech, 03-10-2014 04:10 PM
    • Replies: 2
    • Views: 810
    03-11-2014, 01:26 PM Go to last post
  40. High side pressure higher than normal...

    Started by aaronkim92, 04-25-2012 12:56 PM
    3 Pages
    1 2 3
    • Replies: 29
    • Views: 4,866
    05-08-2012, 10:55 AM Go to last post
  41. Low Suction Compressor #1 StulZ VHS

    Started by aaronmorgan19, 11-20-2011 12:51 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 1,403
    11-23-2011, 10:01 AM Go to last post
  42. Melted contactor, Lennox 6 ton rtu

    Started by Aaronn, 07-01-2013 11:33 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 2,917
    07-04-2013, 08:41 AM Go to last post
  43. low superheat control

    Started by Aaronn, 02-15-2014 12:58 AM
    • Replies: 1
    • Views: 784
    02-15-2014, 08:48 AM Go to last post
  44. JC ZJ12

    Started by AB815SC, 06-03-2013 08:53 PM
    • Replies: 5
    • Views: 833
    06-08-2013, 09:23 AM Go to last post
  45. 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: 10,786
    07-14-2012, 09:33 PM Go to last post
  46. LG VRF system

    Started by abcets, 04-02-2014 08:35 AM
    • Replies: 8
    • Views: 1,251
    04-05-2014, 02:02 AM Go to last post
  47. 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: 3,910
    11-18-2014, 09:42 PM Go to last post
  48. Frown R22 Replacement

    Started by Abrnth3, 03-15-2013 01:03 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 6,729
    06-23-2013, 02:31 PM Go to last post
  49. Trane Voyager

    Started by Abrnth3, 06-13-2013 11:29 AM
    3 Pages
    1 2 3
    • Replies: 35
    • Views: 5,000
    06-19-2013, 09:07 PM Go to last post

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