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Carrier Furnace Model 58STA/STX not firing

I have just bought a house which has three 58STA/STX furnaces. They are brand new. Two of them are working, but one of them refuses to light. The red neon light is on continuosly. The unit blows cold air.
Please help

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  • ravi4259 Jan 21, 2009

    Gas valve is set to "ON". Also I have turned the gas valve going to the unit "ON".

  • ravi4259 Jan 21, 2009

    I tried purging, but the furnace still does not fire. The main fan blows cold air. The small fan does not start. Is this fan suppose to start?

  • RajaShree Jan 31, 2009

    I have the same problem. Last night when we went to the bed heating was working. But when I wake up it was stoped. But when I turn Fan 'ON' , Fan is working but heating is not. Any idea?

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  • Master
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Have you checked the gas valve on the unit.. is it set to on? also check the gas valve going to the unit on?

Posted on Jan 21, 2009

  • Todd Born
    Todd Born Jan 21, 2009

    you may need toi purge the line going to the gas vale inside of the furnace so that you get solid gas to it.

  • Todd Born
    Todd Born Jan 21, 2009

    yes the combustion blower should be running before the gas valve will open. I've seen where there's debris stuck inside and the blower wheet will not come on. if you can try to remove the fan and see wat may be blocking the blower.

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