Furnace red light blinking 4 times
- Goodman furnace red light blinking 4 times
- York furnace red light blinking 4 times
- Luxaire furnace red light blinking 4 times
- Nordyne furnace red light blinking 4 times
- Trane furnace red light blinking 4 times
- Carrier furnace red light blinking 4 times
- Tappan furnace red light blinking 4 times
- American standard furnace red light blinking 4 times
- Trane xr80 furnace red light blinking 4 times
- Lennox furnace blinking red light 4 times
- Coleman furnace blinking red light 4 times
- Trane xb furnace blinking red light 4 times
- Trane xr90 furnace blinking red light 4 times
- American standard freedom 90 furnace blinking red light 4 times