Carrier Furnace High Temperature Limit Switch

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Carrier furnace high temperature limit switch.

Wait 30 minutes before attempting a furnace reset to allow the motor to cool down. Set the temperature on the middle component to approximately 105 to 115 degrees fahrenheit. Setting the middle arm at this temperature ensures that the fan will switch on at the correct time when the furnace warms ups. The switch makes sure the furnace is operating safely and at its desired settings.

Limit switches turn off the burner and turn on the circulating fan if there is a high temperature condition in the furnace. Carrier oem furnace 3 limit switch l250 40 by carrier. The flame roll out switch activates when the furnace heats to a predetermined high temperature limit. When the temperature reduces to normal the burner will come back on.

The high temperature limit switch is an important device used in forced air furnaces powered by gas or heating oil. 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. For example if the blower motor stopped running then no air would move through the unit. The flames would raise the temperature inside the unit and have no place to go getting hotter and hotter.

A high limit control switch will turn off the gas to a furnace if the temperature becomes too high. 4 3 out of 5 stars 48. There is a difference between a limit switch and a rollout switch. It s also known as a fan limit switch or simply a limit switch.

Coleman 02535381000 furnace temperature limit switch genuine original equipment manufacturer oem part. Step 6 set the arm to left of the middle component to approximately 90 degrees fahrenheit.