Final answer:
The main temperature limit safety switch is responsible for protecting a furnace from running at too high of a temperature.
Step-by-step explanation:
The main temperature limit safety switch is responsible for protecting a furnace from running at too high of a temperature. This switch is designed to detect when the temperature inside the furnace exceeds a certain limit and shuts down the furnace to prevent it from overheating.
When the temperature inside the furnace reaches a dangerous level, the temperature limit safety switch will open the electrical circuit, cutting off power to the furnace. This helps to prevent damage to the furnace and reduces the risk of a fire or other hazards.
For example, if there is a malfunction in the furnace's heating elements or the blower motor fails, causing the furnace to generate excessive heat, the temperature limit safety switch will activate and shut down the furnace to prevent the temperature from reaching a dangerous level.
Learn more about furnace temperature limit safety switch