Comprehensive Guide to the Gas Furnace Blower Motor Reset Button
The gas furnace blower motor reset button is a crucial safety feature that helps protect your furnace from overheating or other malfunctions. This comprehensive guide will cover the location, functionality, resetting process, troubleshooting, and technical specifications of the gas furnace blower motor reset button.
Where is the Gas Furnace Blower Motor Reset Button Located?
The reset button on a gas furnace blower motor is typically located inside the blower compartment, often next to or behind the blower motor. In newer models, the reset button is usually directly next to the blower motor, while in older systems, it may be harder to spot and could be located underneath or behind the blower motor. The reset button is often painted red or yellow to stand out and may be marked with a large “R” for easy identification.
What is the Functionality of the Gas Furnace Blower Motor Reset Button?
The reset button on a gas furnace blower motor serves as a crucial safety feature. Its primary purpose is to shut down the furnace in case of overheating or other malfunctions, such as an interrupted gas supply or electrical issues. This prevents potential hazards like damage to the electrical wiring or other components. The reset button works in tandem with the furnace’s limit switch, which measures the temperature inside the furnace and air handler. If the temperature exceeds a set level, the limit switch triggers the reset button to shut down the furnace.
How to Reset the Gas Furnace Blower Motor?
To reset the blower motor on your gas furnace, follow these steps:
- Shut off the power supply to the furnace by flipping the corresponding breaker in the circuit box, and shut off the main gas supply to the furnace, while keeping the pilot gas supply line open if applicable.
- Reduce the thermostat temperature setting to its lowest level.
- If your furnace has a standing pilot light, relight it using a lit match held near the pilot flame jet’s opening.
- Turn the circuit breaker and the main gas supply back on.
- Locate the reset button inside the blower compartment, usually next to the blower motor. If it has popped up, press it down and hold it for about 30 seconds.
- Turn the thermostat back up to the desired temperature, and the furnace should now start and continue to run.
What are the Common Troubleshooting Issues for the Gas Furnace Blower Motor Reset Button?
Some common issues that may necessitate the use of the reset button include:
- Overheating: If the furnace becomes too hot, the reset button will trip to prevent damage.
- Fuel Depletion: Running out of fuel can cause the reset button to trip. Check the fuel tank and refill if necessary.
- Closed Gas Valve: A closed gas valve can impede furnace operation. Ensure all valves are open.
- Flame Sensor Problems: Malfunctioning flame sensors can trigger a reset. In such cases, it is advisable to contact an HVAC professional.
What are the Technical Specifications of the Gas Furnace Blower Motor Reset Button?
While specific technical specifications can vary by manufacturer, some general guidelines include:
- Voltage Ratings: Ensure that any work is done with the power off to avoid electrical shock. The reset button itself does not have specific voltage ratings but is part of the overall electrical circuit of the furnace.
- Compatible Furnace Models: The reset button is a standard feature in most gas furnaces, but the exact location and procedure may vary slightly depending on the make and model.
- Manufacturer Recommendations: Always refer to the manufacturer’s instructions for specific guidance on resetting the blower motor. If the reset button trips repeatedly, it is recommended to have the furnace inspected by an HVAC professional to avoid potential damage.
References:
1. Ambient Edge: What Does a Furnace’s Reset Button Do? | HVAC FAQ | Ambient Edge
2. Express Plumbing Idaho: Where is the Reset Button on Your Furnace and What Does It Do
3. Chapman Heating: How to Reset Your Gas or Electric Furnace | Chapman Heating
