Results 1 to 6 of 6
  1. #1
    Join Date
    Aug 2004
    Posts
    91
    I want to run the blower during hot days (furnace is in the cooler bsmt) My thermostat does not have a fan setting just 2 wires connected to R and W terminals. Can I run a jumper between R and G to turn on the fan?

  2. #2
    Join Date
    Aug 2004
    Posts
    91
    Anyone? I tried jumping the R and G but the fan does not come on. It's hot as hell here.

  3. #3
    Join Date
    Sep 2005
    Location
    NJ
    Posts
    412
    I will be speaking on behalf of the "Pros Forum"

    Please call your local service company

  4. #4
    Join Date
    Jul 2006
    Location
    Lancaster,Ohio
    Posts
    464
    Originally posted by martik
    I want to run the blower during hot days (furnace is in the cooler bsmt) My thermostat does not have a fan setting just 2 wires connected to R and W terminals. Can I run a jumper between R and G to turn on the fan?
    What kind of furnace is it? Gas? if so what kind of a fan/limit switch is it?(some have a push/pull or a slide switch that will put the fan into manual on mode)
    I assume R & W terminals are on the thermostate and the R & G terminals are on the furnace.Are the terminals on the furnace in a terminal block with wires coming off the back or are the terminal a part of a circut board?
    IcyFlame

  5. #5
    Join Date
    Aug 2004
    Posts
    91
    Tech 91 G191BU gas condensing just installed this year. The terminal block on the PCB has 5 terminals marked R C W Y G. This is no fan limit switch

  6. #6
    Join Date
    Aug 2004
    Posts
    91
    It works! I was expecting the fan to come on immediately but had to wait a few secs for it to startup after turning on the safety switch. I guess it needs to run thru some self diagnostic on power up.

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