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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: 10,919
    08-10-2011, 04:34 PM Go to last post
  1. Normal Thread Normal Threads

  2. Looking For Reccomended Readings

    Started by Connor Harkness, 02-09-2017 09:43 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,108
    02-12-2017, 10:59 PM Go to last post
  3. Trane RTU 20x35x2 Filters

    Started by Mileo407, 01-28-2017 09:50 PM
    • Replies: 7
    • Views: 1,392
    02-12-2017, 09:41 PM Go to last post
  4. from HP80 to 404A with no oil change

    Started by bwd111, 02-11-2017 08:59 PM
    • Replies: 2
    • Views: 510
    02-12-2017, 09:25 AM Go to last post
  5. Low ambient control

    Started by icy78, 02-09-2017 06:28 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 1,206
    02-11-2017, 10:48 AM Go to last post
  6. Carrier Wire diagram needed

    Started by HSI, 02-09-2017 06:07 PM
    • Replies: 1
    • Views: 511
    02-09-2017, 08:16 PM Go to last post
  7. txv brazing techniques

    Started by mizzouhvac, 06-19-2011 08:56 AM
    5 Pages
    1 2 3 4 5
    • Replies: 53
    • Views: 19,605
    02-08-2017, 08:20 AM Go to last post
  8. Cool cleaning a Trane

    Started by VanMan812, 02-06-2017 12:27 PM
    • Replies: 3
    • Views: 810
    02-07-2017, 01:28 AM Go to last post
  9. Odd condenser location and freezing issues

    Started by slick101, 02-06-2017 12:06 AM
    • Replies: 0
    • Views: 491
    02-06-2017, 12:06 AM Go to last post
  10. I hate phantom voltage

    Started by 2sac, 12-09-2011 12:36 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,613
    02-05-2017, 11:18 AM Go to last post
  11. Mitsubishi Condensing Unit Problems

    Started by western, 02-02-2017 09:56 PM
    • Replies: 1
    • Views: 578
    02-05-2017, 06:28 AM Go to last post
  12. Carrier 48AKE050-G-111HK Economizer question

    Started by cfe, 02-04-2017 11:57 AM
    • Replies: 4
    • Views: 515
    02-04-2017, 10:36 PM Go to last post
    • Replies: 3
    • Views: 636
    02-04-2017, 06:17 PM Go to last post
  13. Intellipak gas heat question

    Started by acjourneyman, 01-24-2017 01:45 PM
    3 Pages
    1 2 3
    • Replies: 28
    • Views: 1,659
    02-04-2017, 02:06 PM Go to last post
  14. heatpump design

    Started by johnnyb, 02-02-2017 11:53 PM
    • Replies: 6
    • Views: 602
    02-04-2017, 01:08 PM Go to last post
  15. Job post : requirement handle 30' ext. ladder .

    Started by jmiles, 01-24-2017 09:53 AM
    4 Pages
    1 2 3 4
    • Replies: 42
    • Views: 2,989
    02-03-2017, 08:38 PM Go to last post
  16. Furnace Intermittent Pilot Problem

    Started by SpyGuy, 11-22-2011 04:13 AM
    2 Pages
    1 2
    • Replies: 14
    • Views: 8,824
    02-03-2017, 07:52 AM Go to last post
  17. Carrier, defrost and freeze stat.

    Started by mccann, 01-26-2017 09:26 AM
    • Replies: 8
    • Views: 827
    02-03-2017, 07:33 AM Go to last post
  18. What am I missing?

    Started by 280zx, 07-22-2015 09:06 PM
    4 Pages
    1 2 3 4
    • Replies: 39
    • Views: 9,068
    02-03-2017, 12:48 AM Go to last post
  19. systems with dual tx valves and check valves

    Started by 12gauge, 07-26-2013 04:07 AM
    • Replies: 2
    • Views: 1,037
    02-03-2017, 12:16 AM Go to last post
  20. How does one read Dunham Bush Model Numbers?

    Started by Wallywimple, 02-01-2017 01:29 PM
    • Replies: 4
    • Views: 724
    02-02-2017, 09:49 AM Go to last post
  21. Inrush current for HVAC applications

    Started by jw-lu597, 01-28-2017 08:04 PM
    4 Pages
    1 2 3 4
    • Replies: 43
    • Views: 2,330
    02-01-2017, 08:33 PM Go to last post
  22. Can we use 2 legs of three phase power for a heat pump?

    Started by Adamatim1, 01-21-2017 06:30 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 82
    • Views: 5,807
    02-01-2017, 12:12 AM Go to last post
  23. Tools of the trade?

    Started by huntandfishok, 01-11-2017 10:52 AM
    2 Pages
    1 2
    • Replies: 14
    • Views: 1,452
    01-31-2017, 12:47 AM Go to last post
    • Replies: 2
    • Views: 578
    01-29-2017, 10:56 PM Go to last post
  24. Time delay relay

    Started by Chris4u13, 01-28-2017 12:41 PM
    3 Pages
    1 2 3
    • Replies: 29
    • Views: 1,590
    01-29-2017, 09:11 PM Go to last post
  25. Honeywell redlink

    Started by Temp tech 77, 01-29-2017 12:17 PM
    • Replies: 1
    • Views: 436
    01-29-2017, 12:33 PM Go to last post
  26. Issues with Trane rooftop turbulators

    Started by hvac1975, 12-15-2015 11:13 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 2,190
    01-28-2017, 06:30 PM Go to last post
  27. Liebert Low Suction Fault - Intermittent

    Started by klheckle, 11-06-2014 12:10 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 4,401
    01-28-2017, 02:36 PM Go to last post
  28. Tekmar replacement

    Started by targetman, 01-18-2017 08:06 PM
    • Replies: 5
    • Views: 738
    01-28-2017, 02:28 PM Go to last post
  29. see anything wrong? boiler 2 overheats!

    Started by boilerguy joed, 01-15-2016 10:53 PM
    5 Pages
    1 2 3 4 5
    • Replies: 53
    • Views: 7,089
    01-28-2017, 02:10 PM Go to last post
  30. Airflow

    Started by JamesRichter, 01-14-2017 10:46 PM
    • Replies: 8
    • Views: 875
    01-28-2017, 01:57 PM Go to last post
  31. Carrier RTU and Economizer

    Started by Mileo407, 01-25-2017 07:14 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 1,875
    01-28-2017, 01:40 PM Go to last post
  32. Question Lennox CB30M - Not heating, tripping 24v transformer

    Started by NoahK, 01-27-2017 04:02 PM
    • Replies: 3
    • Views: 544
    01-28-2017, 01:26 PM Go to last post
  33. Axial vs forward curve vs backwards incline

    Started by Shreadhead, 01-25-2017 10:41 PM
    • Replies: 9
    • Views: 739
    01-27-2017, 05:42 PM Go to last post
    • Replies: 1
    • Views: 586
    01-27-2017, 02:01 AM Go to last post
  34. TRANE FAN CIRCUIT YCH090A3LOAA

    Started by fixitguy, 01-18-2017 11:56 PM
    • Replies: 8
    • Views: 717
    01-27-2017, 01:07 AM Go to last post
    • Replies: 10
    • Views: 783
    01-26-2017, 09:14 PM Go to last post
  35. Hmm Ansul natural gas shut off

    Started by coyote, 01-26-2017 08:34 PM
    • Replies: 2
    • Views: 416
    01-26-2017, 09:10 PM Go to last post
  36. Carrier Commercial 38AUQ's locking out

    Started by Seancoppage, 12-31-2013 09:10 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 4,440
    01-26-2017, 04:54 PM Go to last post
  37. 407C with 134A

    Started by FTPtech, 01-19-2017 08:56 AM
    • Replies: 7
    • Views: 917
    01-26-2017, 01:40 PM Go to last post
  38. Confused Liebert Deluxe 3 Sight Glass issues

    Started by kyle7372, 09-13-2016 10:20 PM
    4 Pages
    1 2 3 4
    • Replies: 41
    • Views: 3,536
    01-25-2017, 11:02 PM Go to last post
  39. Help with TRANE SERIAL #

    Started by Irishmist, 12-02-2016 10:33 AM
    • Replies: 7
    • Views: 1,410
    01-25-2017, 12:46 PM Go to last post
  40. VRF/VRV Air conditioning system

    Started by Rabinbhat, 01-14-2017 11:05 AM
    2 Pages
    1 2
    • Replies: 13
    • Views: 1,367
    01-23-2017, 10:46 PM Go to last post
  41. Envirex boiler flame-out

    Started by gmanss454, 01-19-2017 08:46 PM
    • Replies: 6
    • Views: 706
    01-22-2017, 10:00 PM Go to last post
  42. Confused Lennox LGA 180SH1Y No high limit error code

    Started by Cholo2013, 01-22-2017 01:54 PM
    • Replies: 0
    • Views: 457
    01-22-2017, 01:54 PM Go to last post
  43. Carrier ComfortLink No Heat

    Started by Elizeze, 01-18-2017 03:49 PM
    • Replies: 10
    • Views: 742
    01-21-2017, 06:56 PM Go to last post
  44. Question about Johnson Controls P66 motor controller

    Started by hvacsolutions, 01-15-2017 03:52 PM
    4 Pages
    1 2 3 4
    • Replies: 39
    • Views: 2,570
    01-20-2017, 08:39 PM Go to last post
  45. ABB ACH550 Quick Question about Preset Frequency

    Started by AndresMtz, 01-16-2017 07:45 PM
    • Replies: 3
    • Views: 670
    01-19-2017, 11:18 PM Go to last post
  46. YORK IGNITION LOCK OUT

    Started by Browncrow, 01-18-2017 01:55 PM
    • Replies: 9
    • Views: 628
    01-18-2017, 10:43 PM Go to last post
  47. Need help

    Started by Jerryw94, 01-17-2017 09:16 PM
    • Replies: 0
    • Views: 415
    01-17-2017, 09:16 PM Go to last post

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