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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: 6,145
    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: 843
    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: 2,210
    08-20-2011, 09:58 PM Go to last post
    • Replies: 4
    • Views: 1,220
    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: 646
    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: 551
    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: 747
    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: 1,149
    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: 670
    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: 457
    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: 562
    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: 1,018
    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: 723
    08-08-2013, 07:13 PM Go to last post
    • Replies: 12
    • Views: 1,263
    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: 1,196
    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: 832
    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: 678
    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: 390
    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: 2,485
    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: 2,794
    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: 1,630
    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: 545
    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: 249
    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: 4,314
    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: 1,263
    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: 636
    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: 1,240
    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: 529
    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: 822
    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: 776
    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: 807
    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: 524
    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: 2,523
    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: 490
    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: 713
    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: 525
    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: 3,905
    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: 1,021
    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: 1,731
    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: 564
    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: 565
    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: 7,914
    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: 798
    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: 1,850
    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: 536
    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: 3,456
    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: 3,597
    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: 1,226
    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: 2,200
    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: 1,196
    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: 1,082
    12-08-2011, 10:07 PM Go to last post

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