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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: 5,842
    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: 811
    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: 2,082
    08-20-2011, 09:58 PM Go to last post
    • Replies: 4
    • Views: 1,183
    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: 593
    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: 526
    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: 697
    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: 1,114
    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: 621
    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: 420
    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: 514
    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: 982
    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: 683
    08-08-2013, 07:13 PM Go to last post
    • Replies: 12
    • Views: 1,204
    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: 1,171
    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: 814
    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: 657
    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: 373
    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: 2,376
    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: 2,700
    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: 1,581
    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: 516
    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: 230
    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: 4,166
    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: 1,198
    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: 616
    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: 1,149
    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: 512
    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: 746
    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: 744
    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: 790
    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: 501
    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: 2,462
    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: 471
    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: 674
    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: 501
    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: 3,784
    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: 1,004
    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: 1,641
    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: 542
    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: 530
    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: 7,695
    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: 713
    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: 1,678
    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: 502
    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: 3,206
    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: 3,399
    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: 1,196
    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: 1,713
    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: 1,103
    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: 1,059
    12-08-2011, 10:07 PM Go to last post

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