My forced air heating is not working. The fan will not turn on even when set to "ON" at the thermostat. Now the interesting part, when I checked the furnace I shut off the main power. When I turned it back on, the furnace and fan cycled on. After watching it operate for 30 seconds or so, I shrugged and left (contact corrosion?).
But even with theat brief moment of thermal bliss, the system returned to its cold-hearted ways.
Seems to me that I should short the blower power wire at the thermostat to see if bypassing the thermostat allows the fan to work (an if so, replacing the thermostat). Does anyone know which of the wires I need to short to trigger the fan directly?
Also, any other suggestions as to the possible problem would be appreciated.