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brewster1959
Nov 11, 2008, 02:40 PM
I have a noma programable thermostat and I cant get the fan to come on independantly of the heat. I have a two wire system
hvac1000
Nov 11, 2008, 02:56 PM
It will not do that on a two wire system. The blower will only come on in the heat mode
hvac1000
Nov 11, 2008, 07:56 PM
You posted in a different loction from your original post. But I am posting you answer here.

Two wires will only get you control over the heat with the furnace blower working automatically. You cannot control the blower unless you have more wires.