Question about Heating & Cooling
As your unit had just 2 wires, Red and White, you had just heat only with no AC and no fan on as described as you have no green circuit wired up at the furnace or thermostat, you can add a relay if not equipped but that would make your unit very old.
Posted on Oct 19, 2013
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Posted on Jan 02, 2017
You should be seeing 120 volts to the igniter. Anything less requires either a replacement of the transformer, start relay or control module.
Posted on May 30, 2008
Check to see if there is a short between the green wire and the red wire. Green is the fan control wire for AC. Sounds like some wires may be touching. How did the old t-stat get fried?
Posted on Jan 02, 2009
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