Results 1 to 4 of 4
  1. #1
    Join Date
    Dec 2006
    Location
    New York
    Posts
    5
    I need help. I had a new home built 2 1/2 years ago. This winter will be the 3rd heating season. Zone 1 is approx. 1200 sq ft. Zone 2 is About 1100 sq. ft. I have 2 split units, one for each zone. Trane 1 1/2 ton unit with an Aquecoil hot water jacket for hydronic hot air. The hot water circulator pump kicks on when the t-stat calls for heating. The contractor installed a cheap clip on aquastat on the supply pipe to the aquecoil to control the fan operation. Here is the problem.......after the stat is satisfied the circulator shuts down...the supply pipe temp drops slowly to open the fan circuit. I can hear it click open, but the fan keeps running for 4 or 5 minutes. This is not a DIY question....i've spoken to 4 or 5 techs, (neighbors and friends on jobs), the contractor who installed the job is MIA. I understand the concept of clearing the heating chamber, one tech said there may be a timer circuit on the fan board in case a a gas furnace is used for heating. When it's 20 degrees out and the registers are blowing cool air for a few minutes it doesn't seem correct. As I mentioned a reward is offered for the first solution that works. Thanks.

  2. #2
    Join Date
    Nov 2000
    Location
    Upstate, SC
    Posts
    2,919
    I'd forget the reward and just pick up the phone book and call a nearby qualified tech. Anything we suggest is merely speculation because we can not see your system from here, but there is more than likely a relatively simple solution to your problem.

    Bobby

  3. #3
    Join Date
    Oct 2003
    Location
    Florida's space coast
    Posts
    2,538
    Talk to a good SERVICE tech.
    This is an easy fix but I wont discuss it in this forum.
    Good luck.
    We've been doing so much,for so long,with so little, that now we can do almost anything, with nothing at all.

  4. #4
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    Why not use one of you tech friends to cure the prob?

    They seemed knowledgable enough to tell you your unit is not operating right, so they should be able to correct it.

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