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Thread: thermostat

  1. #1
    Join Date
    Dec 2010
    Location
    Illinois
    Posts
    64

    Default thermostat

    Had a friend that wanted me to look at why his furnace would not come on the other day ( like I am a HVAC guy now that I am a Home Inspector). The thermostat had no on/auto on it. I was confused by this. It was a small two burner gas furnace. Just curious! Thanks.

    Similar Threads:
    Inspection Referral SOC
    E.D.S
    Home Inspections
    Lic.#450.010534

  2. #2
    Join Date
    Feb 2008
    Location
    Chicago IL
    Posts
    1,984

    Default Re: thermostat

    What kind of Stat? A round Honeywell T87 without a cooling sub base doesn't have any switches on it. Lots of the older non-programmable heat mode only stats don't have any switches.
    Did you check for 24V across the stat or at the furnace? Is this a newer older unit. Check for blinking lights on a newer unit. Could be no power, no 24V, bad trans, who knows, lots of possibilities.

    www.aic-chicago.com
    773/844-4AIC
    "The Code is not a ceiling to reach but a floor to work up from"

  3. #3
    Join Date
    Dec 2010
    Location
    Illinois
    Posts
    64

    Default Re: thermostat

    Great thanks. It is round old honeywell. It also has no A/C on it. I was just confused why there would be no option on the blower. Thanks a lot.

    E.D.S
    Home Inspections
    Lic.#450.010534

  4. #4
    Join Date
    Mar 2011
    Location
    Pasadena, MD
    Posts
    13

    Default Re: thermostat

    Quote Originally Posted by Eric Smith View Post
    Great thanks. It is round old honeywell. It also has no A/C on it. I was just confused why there would be no option on the blower. Thanks a lot.

    Some fan and limit control switches have a manual fan on / off switch that can be controlled at the furnace.

    Amazon.com: Honeywell L4064B2228 combination fan and limit furnace control: Home Improvement



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