Intertherm G4RK096C-16 Gas Furnace Fan not cutting in during heating cycle. If we wiggle the wires, fan cuts in. Some time ago during servicing, a variable speed control for the fan was installed. There is now a red wire going to the fan connector on the control panel and a blue wire with a spade tip is taped off. If we were to disconnect the variable speed control, which wire (red or blue) should be connected to the connector on the control panel?
Heating & Cooling - Intertherm