hello all

the thermostat that came in my home was ancient, so i replaced it with a common Honeywell digital stat from the local hardware store. ever since then, the fan kicks on and off twice quickly after the heat shuts off under normal circumstances. this only happens in heat mode. i tried a different thermostat claimed to work with 99% of systems and got no change.

i have four wires. one of them is blue, which i hook up to the yellow stat socket 'cos that seems like the obvious choice. i'm wondering if this logic is the problem.

any advice?

thanks in advance