Replacement fan control Ignitor board for "Park Model" furnaces. Fuse protected. 3 try operation. S huts the fan motor off a minute and a half after the 3rd ignition try fails to sense a flame. Waits one hour and tries the cycle again before locking out, and having to reset the thermostat. A bi-color LED comes on "green" after the fan comes on and power appears on the "air" terminal. The LED turns "red" when power appears on the valve terminal.