Question about Air Conditioners
Please help us find the possible cause of replacement thermostat not turning on either air conidtion unit outside, nor the air handler inside.
Air handler: Bryant FA4ANF030 and new thermostat Honeywell RTH3100C
If you have a newer t-stat your heat pump reversing valve is either o or b depending on the type of system you have
Posted on Dec 19, 2007
I had the same issue and called the manufactor and they new exactly which wires went were. The manual that came with the thermostat was incorrect.
Posted on Jun 26, 2008
If you have a heat pump do not put your blue wire on b. Put it on x or c. If you don't have an inline fuse you may have blown your transformer.
Posted on Dec 04, 2007
4-wire typical wiring of a thermostat is: Y (Yellow) G (Green) W (white) and R (red). Inspect the thermostat to see if it has a jumper from R1 to R2. If not, put your red wire on R2. On a 5-wire thermostat you may have a blue wire. This will go to the common terminal (usually C but sometimes B) check the inline fuse in the air handler to see if it has blown. Replace it only after wiring the thermostat correctly.
Posted on Dec 03, 2007
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