Furnace light flashing 4 times
- Keeprite furnace light flashing 4 times
- Furnace green light flashing 4 times
- Furnace red light flashing 4 times
- Lennox furnace red light flashing 4 times
- Coleman furnace green light flashing 4 times
- Coleman furnace red light flashing 4 times
- Comfortmaker furnace green light flashing 4 times
- Trane furnace red light flashing 4 times
- Goodman furnace red light flashing 4 times
- Arcoaire furnace green light flashing 4 times
- Frigidaire furnace red light flashing 4 times
- Guardian furnace red light flashing 4 times
- York furnace flashing red light 4 times
- Heil furnace flashing green light 4 times
- Keeprite furnace flashing green light 4 times