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Furnace

gevans
gevans Member Posts: 3
in THE MAIN WALL
Thermostat is on Heat. The furnace doesn't 'kick' on when the thermostat is turned up and the autoatic fan doesn't come on - But if you leave it on heat and turn the fan ot "on" (runs constantly) heat does blot out of the ducts. Do I need a new thermostat or is this another problem?

Comments

  • Timco
    Timco Member Posts: 3,040


    when you put it on 'on', are you sure just air is not coming out? It is likely just air, and not heat. This could be anything from a igniter to a spill switch to the gas valve. You should call a pro if you are not mechanically inclined.

    Tim
    Just a guy running some pipes.
  • Unknown
    Unknown
    You mean

    it wont "fire", could be anything from a power switch turned off,,,to a pilot light out.
    I would suggest calling someone-in for a look see.

    Dave
  • burnerman_2
    burnerman_2 Member Posts: 297


    SINCE MOST NEW FURNACES GO BY TIMERS AND NOT HEAT WHEN THERE IS A CALL 4 HEAT IN ABOUT 90 SEC THE FAN STARTS AND SINCE THERE IS NO HEAT BEIN GENERATED IT WILL RUN CONTINULOSLY IT MAY BE OFF ON SAFTY BUT AS OTHERS STATED UNLES U R THERE IT COULD BE 1 OF A DOZ REASONS IT IS OFF ROYBOY
  • gevans
    gevans Member Posts: 3
    furnace won't kick on

    Thermostat is on Heat. The furnace doesn't 'kick' on when the thermostat is turned up and the autoatic fan doesn't come on - But if you leave it on heat and turn the fan ot "on" (runs constantly) heat does blot out of the ducts. Do I need a new thermostat or is this another problem?
  • gevans
    gevans Member Posts: 3


    no when the thermostat is stet higher than the temperature in th house - hot air comes out. the auto fan just wil not kick on
  • Scott Larabee
    Scott Larabee Member Posts: 28


    That sound like a problem in the relay, wiring. or one speed in the fan being burned out! You really need to get someone there to check out the system for you.

    The fan "on" on the thermostat normally runs the fan at a different speed than the "auto" fan. The fan controll could be bad, or it could be one of the other reasons mentioned. This is impossible to determine without looking at the unit!

    Scott
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