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When I set tstat to call for a/c, compressor outside comes on. Blower on furnace does not. When I manually rotate fan limit switch on furnace wall, blower comes on, blows cold air, and then goes off when I release the fan limit switch. I have a Honeywell 83251008a low and high voltage transformer, and Honeywell (I think) limit on off switch. I also noticed the 2 wires coming from the Honeywell Gas regulator are off. They were connected at the onset of the problem. I am not sure where to reconnect them.

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Sorry, you mean gas valve control? when you have only 2 wires, usually it doesnt matter which terminal as there,s no polarity differentiation at that locationYou should never rotate this dial by hand, you will bend the helix inside and fan will not operaTE properly.Now , with your problem, was this unit working properly at first, or was this a ndew install ? That honeywell control is only for the heating mode. For a/c operation, its take a relay of some sort, depending of your model.was is there present that you can indicate to me or us? Do you have a control or box or terminal strip with the letters rwgcy, in any order?

Posted on Nov 11, 2011

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Blower relay bad or no call from stat on green wire to run fan jump red on stat to green if fan comes on stat bad if no look for fan relay turning the well switch bypasses the relay hope this helps

Posted on May 25, 2009

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Here's my best shot.
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