Airflow and temperature rise
A loaded filter, restricted return, blocked supply or blower issue can raise furnace temperature until a limit opens. The cause should be measured rather than assumed.
Ignition and flame proving
A furnace may begin a sequence and shut down when ignition or flame confirmation does not complete correctly. Fuel and combustion components are professional-service territory.
Controls and equipment fit
Thermostat location, wiring, staging and equipment sizing can all influence cycling. Share whether the pattern is new, seasonal or linked to recent work.