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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: 10,763
    08-10-2011, 04:34 PM Go to last post
  1. Normal Thread Normal Threads

  2. Blower belts cooking!

    Started by fitzyfitta, 04-09-2013 11:02 AM
    4 Pages
    1 2 3 4
    • Replies: 49
    • Views: 7,032
    02-17-2017, 04:04 PM Go to last post
  3. Confused Leak search using trace

    Started by Alantoy13, 02-16-2017 08:59 PM
    • Replies: 3
    • Views: 570
    02-16-2017, 10:30 PM Go to last post
  4. Trane CTI Controls

    Started by 11austinlee, 02-16-2017 02:02 PM
    • Replies: 4
    • Views: 518
    02-16-2017, 04:44 PM Go to last post
  5. Sanyo ECOI mini

    Started by ckartson, 02-16-2017 06:51 AM
    • Replies: 3
    • Views: 551
    02-16-2017, 10:16 AM Go to last post
  6. potential relays

    Started by coolerinfrederick, 02-12-2017 10:07 AM
    • Replies: 8
    • Views: 885
    02-14-2017, 10:11 PM Go to last post
    • Replies: 3
    • Views: 640
    02-14-2017, 07:30 PM Go to last post
  7. Post Clocking Gas Meter

    Started by Push It, 02-14-2017 11:23 AM
    • Replies: 2
    • Views: 559
    02-14-2017, 11:46 AM Go to last post
  8. What tonnage is this?

    Started by VanMan812, 02-13-2017 10:17 PM
    • Replies: 3
    • Views: 541
    02-13-2017, 11:44 PM Go to last post
  9. Greenheck ignition cable flame rod cable

    Started by Service93, 02-11-2017 01:07 PM
    2 Pages
    1 2
    • Replies: 18
    • Views: 1,101
    02-13-2017, 10:51 PM Go to last post
  10. "ECONOFRESH" from Hitachi.

    Started by Juan Madera, 12-07-2016 05:50 PM
    economizer, variable refrigerant flow
    • Replies: 2
    • Views: 543
    02-12-2017, 11:35 PM Go to last post
  11. High sub-cooling, high super heat but flashing sight glass

    Started by hvacmo, 02-03-2017 11:19 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 81
    • Views: 4,228
    02-12-2017, 11:10 PM Go to last post
  12. Looking For Reccomended Readings

    Started by Connor Harkness, 02-09-2017 09:43 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,017
    02-12-2017, 10:59 PM Go to last post
  13. Trane RTU 20x35x2 Filters

    Started by Mileo407, 01-28-2017 09:50 PM
    • Replies: 7
    • Views: 1,339
    02-12-2017, 09:41 PM Go to last post
  14. from HP80 to 404A with no oil change

    Started by bwd111, 02-11-2017 08:59 PM
    • Replies: 2
    • Views: 486
    02-12-2017, 09:25 AM Go to last post
  15. Low ambient control

    Started by icy78, 02-09-2017 06:28 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 1,165
    02-11-2017, 10:48 AM Go to last post
  16. Carrier Wire diagram needed

    Started by HSI, 02-09-2017 06:07 PM
    • Replies: 1
    • Views: 482
    02-09-2017, 08:16 PM Go to last post
  17. Advice on a backflow preventer repair

    Started by mixsit, 02-01-2017 02:45 PM
    • Replies: 7
    • Views: 813
    02-08-2017, 08:38 PM Go to last post
  18. txv brazing techniques

    Started by mizzouhvac, 06-19-2011 08:56 AM
    5 Pages
    1 2 3 4 5
    • Replies: 53
    • Views: 19,143
    02-08-2017, 08:20 AM Go to last post
  19. Cool cleaning a Trane

    Started by VanMan812, 02-06-2017 12:27 PM
    • Replies: 3
    • Views: 747
    02-07-2017, 01:28 AM Go to last post
  20. Odd condenser location and freezing issues

    Started by slick101, 02-06-2017 12:06 AM
    • Replies: 0
    • Views: 468
    02-06-2017, 12:06 AM Go to last post
  21. I hate phantom voltage

    Started by 2sac, 12-09-2011 12:36 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,537
    02-05-2017, 11:18 AM Go to last post
  22. Mitsubishi Condensing Unit Problems

    Started by western, 02-02-2017 09:56 PM
    • Replies: 1
    • Views: 537
    02-05-2017, 06:28 AM Go to last post
  23. Carrier 48AKE050-G-111HK Economizer question

    Started by cfe, 02-04-2017 11:57 AM
    • Replies: 4
    • Views: 482
    02-04-2017, 10:36 PM Go to last post
    • Replies: 3
    • Views: 607
    02-04-2017, 06:17 PM Go to last post
  24. Intellipak gas heat question

    Started by acjourneyman, 01-24-2017 01:45 PM
    3 Pages
    1 2 3
    • Replies: 28
    • Views: 1,591
    02-04-2017, 02:06 PM Go to last post
  25. heatpump design

    Started by johnnyb, 02-02-2017 11:53 PM
    • Replies: 6
    • Views: 568
    02-04-2017, 01:08 PM Go to last post
  26. 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: 2,709
    02-03-2017, 08:38 PM Go to last post
  27. Furnace Intermittent Pilot Problem

    Started by SpyGuy, 11-22-2011 04:13 AM
    2 Pages
    1 2
    • Replies: 14
    • Views: 8,801
    02-03-2017, 07:52 AM Go to last post
  28. Carrier, defrost and freeze stat.

    Started by mccann, 01-26-2017 09:26 AM
    • Replies: 8
    • Views: 767
    02-03-2017, 07:33 AM Go to last post
  29. What am I missing?

    Started by 280zx, 07-22-2015 09:06 PM
    4 Pages
    1 2 3 4
    • Replies: 39
    • Views: 8,592
    02-03-2017, 12:48 AM Go to last post
  30. systems with dual tx valves and check valves

    Started by 12gauge, 07-26-2013 04:07 AM
    • Replies: 2
    • Views: 980
    02-03-2017, 12:16 AM Go to last post
  31. How does one read Dunham Bush Model Numbers?

    Started by Wallywimple, 02-01-2017 01:29 PM
    • Replies: 4
    • Views: 725
    02-02-2017, 09:49 AM Go to last post
  32. Inrush current for HVAC applications

    Started by jw-lu597, 01-28-2017 08:04 PM
    4 Pages
    1 2 3 4
    • Replies: 43
    • Views: 2,204
    02-01-2017, 08:33 PM Go to last post
  33. 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: 5,144
    02-01-2017, 12:12 AM Go to last post
  34. Tools of the trade?

    Started by huntandfishok, 01-11-2017 10:52 AM
    2 Pages
    1 2
    • Replies: 14
    • Views: 1,421
    01-31-2017, 12:47 AM Go to last post
    • Replies: 2
    • Views: 549
    01-29-2017, 10:56 PM Go to last post
  35. Time delay relay

    Started by Chris4u13, 01-28-2017 12:41 PM
    3 Pages
    1 2 3
    • Replies: 29
    • Views: 1,489
    01-29-2017, 09:11 PM Go to last post
  36. Honeywell redlink

    Started by Temp tech 77, 01-29-2017 12:17 PM
    • Replies: 1
    • Views: 391
    01-29-2017, 12:33 PM Go to last post
  37. Issues with Trane rooftop turbulators

    Started by hvac1975, 12-15-2015 11:13 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 2,135
    01-28-2017, 06:30 PM Go to last post
  38. Liebert Low Suction Fault - Intermittent

    Started by klheckle, 11-06-2014 12:10 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 4,247
    01-28-2017, 02:36 PM Go to last post
  39. Tekmar replacement

    Started by targetman, 01-18-2017 08:06 PM
    • Replies: 5
    • Views: 663
    01-28-2017, 02:28 PM Go to last post
  40. 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: 6,572
    01-28-2017, 02:10 PM Go to last post
  41. Airflow

    Started by JamesRichter, 01-14-2017 10:46 PM
    • Replies: 8
    • Views: 808
    01-28-2017, 01:57 PM Go to last post
  42. Carrier RTU and Economizer

    Started by Mileo407, 01-25-2017 07:14 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 1,751
    01-28-2017, 01:40 PM Go to last post
  43. Question Lennox CB30M - Not heating, tripping 24v transformer

    Started by NoahK, 01-27-2017 04:02 PM
    • Replies: 3
    • Views: 482
    01-28-2017, 01:26 PM Go to last post
  44. Axial vs forward curve vs backwards incline

    Started by Shreadhead, 01-25-2017 10:41 PM
    • Replies: 9
    • Views: 690
    01-27-2017, 05:42 PM Go to last post
    • Replies: 1
    • Views: 538
    01-27-2017, 02:01 AM Go to last post
  45. TRANE FAN CIRCUIT YCH090A3LOAA

    Started by fixitguy, 01-18-2017 11:56 PM
    • Replies: 8
    • Views: 700
    01-27-2017, 01:07 AM Go to last post
    • Replies: 10
    • Views: 722
    01-26-2017, 09:14 PM Go to last post
  46. Hmm Ansul natural gas shut off

    Started by coyote, 01-26-2017 08:34 PM
    • Replies: 2
    • Views: 392
    01-26-2017, 09:10 PM Go to last post

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