I have a Bryant 395C furnace. The blower won't come on even when thermostat fan switch is set to "on." I've verified that I'm getting 24V AC between terminals marked G and C on the furnace. Blower has 3 wires going into circuit board on furnace. These are colored red, black, and white; red is connected to a terminal marked "LO," black connected to "HI," white to "COM." I measure no voltage across both red/white and black/white. I think the blower is not getting any power. Please help.