American Standard furnaces are well-known for their reliability and efficiency in heating American homes. However, like all mechanical systems, they can sometimes experience issues requiring troubleshooting. One commonly used troubleshooting step is pressing the reset button. This article explores the function, location, and proper use of the American Standard furnace reset button, helping homeowners quickly restore furnace operation without unnecessary repair calls.
| Feature | Description |
|---|---|
| Device | American Standard Furnace |
| Component | Reset Button (High Limit Switch Reset) |
| Purpose | Restores furnace operation after overheating or safety shutdown |
| Location | Near the burner compartment or inside the blower area |
| Usage | Press to reset after troubleshooting overheating or flame issues |
Understanding The Purpose Of The Reset Button On American Standard Furnaces
The reset button on an American Standard furnace is generally linked to the high limit switch, a safety device designed to shut the furnace down if the heat exchanger gets dangerously hot. This prevents possible damage or fire hazards. When the reset button trips, it means the furnace overheated and needs manual intervention before restarting.
Pressing the reset button allows the furnace to resume normal operation once the root cause of overheating or malfunction has been addressed. It should never be used as a substitute for comprehensive troubleshooting, as repeated resets without fixing the underlying problem can cause further damage or safety risks.
Where To Find The Reset Button On Different American Standard Furnace Models
Manufacturers often position the reset button differently depending on the furnace model and series but generally it’s located near critical components such as the burner assembly or blower compartment.
- Inside the burner compartment: Many models have the reset button positioned on the side or back wall of the burner area behind the furnace door.
- Near the blower motor: Some newer furnaces place the reset control close to the blower assembly, easily accessible once the blower panel is removed.
- Behind access panels: In certain models, the reset button is behind a removable panel requiring a screwdriver for access.
Refer to the furnace user manual or American Standard’s website for the exact reset button location for your model. Never attempt to force open panels or tamper with internal components without proper instructions.
Step-By-Step Guide To Using The American Standard Furnace Reset Button
Proper use of the reset button can resolve temporary issues caused by overheating or electrical glitches. Follow these steps carefully:
- Turn off the furnace power: Use the thermostat to shut off the furnace or switch off the power at the circuit breaker for safety.
- Locate the reset button: Access the burner or blower compartment depending on your model and identify the red or black reset button.
- Inspect the furnace: Look for blocked vents, dirty air filters, or any signs of overheating or loose wiring before pressing reset.
- Press and hold the reset button: Firmly press the button for about 5 seconds, then release. It should “click” to indicate it has been reset.
- Restore power and test: Turn the furnace power back on and set your thermostat to call for heat. Observe if the furnace ignites and runs normally.
- Monitor system operation: If the furnace shuts down again or the reset button trips repeatedly, turn off the system and seek professional HVAC service.
When Should You Reset Your American Standard Furnace?
The reset button is intended for specific scenarios, including:
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- Furnace overheating: When a safety shutoff occurs due to excessive heat, often caused by airflow restrictions or a dirty filter.
- Flame sensor or ignition problems: Some models require reset after ignition failure or flame detection issues resolved by cleaning or repair.
- Temporary electrical glitches: Power surges or short circuits might trip safety switches that can be reset to restore normal function.
Avoid repeatedly resetting the furnace without addressing root causes, as it can damage the heat exchanger and create fire hazards.
Common Causes Leading To Furnace Reset Button Trips
Many underlying issues can cause the high limit switch to trip, prompting a reset. Typical causes include:
| Cause | Description |
|---|---|
| Clogged Air Filters | Restricted airflow causes overheating in the heat exchanger. |
| Blocked Vents or Registers | Obstructed vents reduce air circulation, leading to excessive furnace temperatures. |
| Malfunctioning Blower Motor | If the blower fails to circulate air properly, heat builds up inside the furnace. |
| Dirty Flame Sensor | Can cause ignition issues resulting in an incomplete burn and safety shutoffs. |
| Faulty Limit Switch | The switch itself may be defective, causing false trips. |
| Insufficient Gas Pressure | Improper gas levels affect combustion, potentially triggering a reset. |
Safety Tips And Precautions When Using The Reset Button
- Always power off the furnace before attempting to reset.
- Never press the reset button more than once without allowing the furnace to cool completely.
- Use the reset button only after investigating and fixing airflow or ignition problems.
- Do not bypass the reset button or safety controls. If the button keeps tripping, call a licensed HVAC technician.
- Wear gloves and ensure proper lighting when accessing furnace components.
Maintenance Practices To Prevent Frequent Furnace Reset Issues
Proactive maintenance can minimize furnace malfunctions and reset button trips. Recommended actions include:
- Replace air filters regularly: Every 1-3 months depending on usage and environmental factors.
- Keep vents and registers clear of obstructions: Ensure free airflow in all rooms served by the furnace.
- Schedule annual professional furnace inspections: Comprehensive checks of burners, flame sensors, limit switches, and other key parts.
- Clean the flame sensor sensor: A dirty sensor can cause ignition failures and tripped resets.
- Monitor and maintain appropriate thermostat settings: Avoid constant cycling that stresses components.