Where is the fan limit switch on a Bryant furnace?

Your fan limit switch is located inside the furnace panel cover, usually near the upper right corner. The fan limit switch is responsible for turning the blower on and off at the appropriate times.

Where is the high limit switch located on a furnace?

plenum
The high limit switch is usually attached to a metal plate, which is bolted to the outside of the furnace plenum (the large metal box where air is heated.) You will have to remove the furnace cover to find it.

Where is the reset button on your Bryant furnace?

How do you reset the limit switch on a furnace?

How to Reset Furnace Limit Switch. Once the problem affecting your furnace has been identified and corrected, you should reset your furnace to continue enjoying the warmth on your home. In most gas furnace, this is done by simply shutting off the power supply and turning it back on after 20 or so seconds.

How do you test a Bryant limit switch?

What is the limit switch on a furnace?

A furnace limit switch is a component of a forced-air furnace that is responsible for turning on the furnace blower once the desired heat has been met inside the furnace. Without a functioning furnace limit switch, a furnace would not be able to regulate the temperature in conjunction with a thermostat.

Where is the reset button?

Alternatively referred to as the reset switch, the reset button allows devices that utilize it, such as a computer or peripheral to be rebooted. Usually, the button is on the front of the device, next to or near the power button.

How do I know if my limit switch is bad?

The most common sign of a malfunctioning limit switch is the continuous operation of your furnace’s blower. Just as the limit switch won’t allow the fan to turn on until the warm air has reached the right temperature, the limit switch also shuts down when the air cools to a certain temperature.

How do you read a limit switch?

Can you reset a limit switch?

The function of your furnace limit switch is to tell the fan when to turn off and on depending on the temperature in the home. … However, for your own safety, don’t attempt to reset the switch without first consulting your furnace’s instruction manual.

Can a furnace high limit switch go bad?

Like any other part in your HVAC system, the high limit switch can wear out over time. One of the most common issues that happens when a high limit switch goes bad is that it fails to signal the blower fan to turn off. … High limit switches can also weaken over time so that they begin tripping at a lower temperature.

Can you bypass furnace limit switch?

When testing if a switch is good or bad, it can be bypassed for a short time. This is a common method to see if the switch needs a replacement. … The limit switch turns the furnace off when it becomes too hot, which prevents the heat exchanger from becoming damaged.

How do you manually reset a limit switch?

The contacts open (limit) at a factory set point. Once that limit is reached, a human must manually press the red reset button for the switch to return back to the normally closed state.

What causes a limit switch to open?

Limit switch codes

The limit switch shuts off the burner when the temperature exceeds a preset temperature. When the temperature reduces to normal, the burner will come back on. The most common reason for limits to open is a plugged filter or a dirty blower wheel.

Why does my furnace limit switch keep tripping?

A high limit switch will keep tripping due to a dirty flame sensor, short cycling, obstructed airflow, or a defective switch. These lead to overheating within the gas furnace that triggers tripping as a safety measure to prevent fires. Clean and replace dirty and worn-out parts to fix the problem.