Carrier Furnace High Temperature Limit Switch

The limit switch shuts off the burner when the temperature exceeds a preset temperature.

Carrier furnace high temperature limit switch.

There is a difference between a limit switch and a rollout switch. Once the flame roll out switch has been tripped it must be reset before the appliance can produce heat again. The flame roll out switch activates when the furnace heats to a predetermined high temperature limit. Setting the middle arm at this temperature ensures that the fan will switch on at the correct time when the furnace warms ups.

Carrier oem furnace 3 limit switch l250 40 by carrier. For example if the blower motor stopped running then no air would move through the unit. A high limit control switch will turn off the gas to a furnace if the temperature becomes too high. The switch makes sure the furnace is operating safely and at its desired settings.

1 16 of 368 results for furnace high limit switch b13701 55 goodman oem furnace replacement limit switch. Limit switches turn off the burner and turn on the circulating fan if there is a high temperature condition in the furnace. It s also known as a fan limit switch or simply a limit switch. Step 6 set the arm to left of the middle component to approximately 90 degrees fahrenheit.

Wait 30 minutes before attempting a furnace reset to allow the motor to cool down. Get it as soon as thu. The flames would raise the temperature inside the unit and have no place to go getting hotter and hotter. When the temperature reduces to normal the burner will come back on.

This is the limit switch on our carrier furnace that i had to reset and reset until it finally stopped needing to be reset anymore and the furnace works fine. The high temperature limit switch is an important device used in forced air furnaces powered by gas or heating oil.