If it s dirty air can t flow properly through the furnace.
Carrier gas furnace ignition problem.
Carrier gas furnace troubleshooting step by step.
Flame sensor electronic ignition gas furnace problems and troubleshooting.
If you enjoy the warm air from your furnace but it suddenly stops blowing that could indicate a sudden problem with the ignitor.
Also clean any dirty air filters before trying to reset the igniter.
All the gas furnace problems need to check out with proper troubleshooting techniques.
The switch is doing it s job by shutting the gas thus heat off.
Look for common problems check to see that the circuit breaker for the furnace is not tripped and provides power to the unit.
A bad blower dirty filter collapsed ductwork plugged up flue can cause the limit switches to open.
The truth is many homeowners have thought their carrier furnace wasn t working but all they needed to do was to turn on the system or turn up the heat.
All problems resolved before the furnace is returned to operation.
The problem is not the switch.
A flame rollout switch is exactly as it sounds the flame is rolling out of it s burner compartment.
Your furnace has built in fail safes to keep you and your house safe when there is a problem with the system.
Sometimes the thermostat gets turned off or the setting changed by accident.
This means that your furnace is getting too hot and around the burner orifice.