I have a gas fired forced hot air heating system and I replaced the old Honeywell Thermostat with a Heat Only Honeywell Thermostat from Home Depot because the Heating System didn't kick on when the old beat-up one was turned on. The Directions of the new Thermostat say for two wire systems connect one wire to the R terminal and one to the W terminal. I did it and the thermostat doesn't kick the system on. I tried swapping the wires and the thermostat still doesn't work.
I touched the two wires coming out of the wall (There is only one black one and one white one) to determine whether the gas burner comes on and it does...
Any ideas on what could be wrong? Is it the thermostat from Home Depot? It says 24Volt on it.