Question about Heating & Cooling
Posted by Anonymous on
Go to furnace and shut off power, remove blower door compartment. Inside you will find a control board where thermostat wires are connected. Should look something like this:
R-Red Wire= Power
G-Green Wire= Fan
Y=Yellow or Blue Wire=Cooling.
It sounds like you have a bad motor speed. So try this:
With Power Still Off, on the same control board there is a terminal usually marked Cool and Heat. There should also be a couple of terminals that are named park. The wires hooked to these are the fan wires..
Exchange the Heat and Cool wires on the terminal board. Put everything back together and try cooling again, if the fan comes on
then you have a burnt out motor speed. Go back to furnace and change
the heat and cool wires around, next if Cooling had the black wire hooked to it, put yellow or blue on Cooling and black to park.
Note: The reason why you put the blower door back on is because it
has a door switch that if not properly seated, you wont be able to power
Posted on Jul 15, 2010
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Posted on Jan 02, 2017
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