The Gibson furnace reset button is a safety feature designed to clear temporary faults and allow the system to attempt a restart once conditions are safe. This guide explains how to locate the reset button, how to perform a safe reset, and how to diagnose common causes of resets. It also covers safety considerations, when professional service is needed, and practical maintenance tips to minimize future lockouts. Readers will gain actionable steps to address simple Gibson furnace reset scenarios while avoiding risky troubleshooting.
What Is The Gibson Furnace Reset Button?
The Gibson furnace reset button serves as a manual reset for certain fault conditions, such as ignition failure, flame sensor issues, or an overheated limit. Pressing the button clears the fault flag and prompts the system to attempt another start. It is not a cure for underlying problems; persistent faults indicate an issue that requires further inspection by a technician.
In many Gibson models, the reset button is a small, clearly labeled red or orange button located behind the blower access panel or near the gas valve assembly. Some units may rely on a power cycle rather than a dedicated reset button. If a model lacks a visible reset button, consult the owner’s manual or contact Gibson support for model-specific guidance.
Where To Find The Reset Button On A Gibson Furnace
Before attempting any reset, switch off the furnace at the main power switch and, if accessible, at the thermostat. Safety first reduces the risk of electric shock or accidental ignition of gas. Remove the access panel to view the internal components where the reset button is most often located.
Typical locations include the blower compartment door area, near the gas valve, or on a circuit board inside the cabinet. If the unit has a flame sensor or a pressure switch with a reset feature, the reset mechanism may be integrated into those components rather than a dedicated button. Model differences mean some Gibson furnaces may not have a traditional push-button reset at all.
How The Reset Button Works In A Gibson System
A reset button interacts with the furnace control board to clear a fault condition after the cause has been addressed. When a fault is detected—such as a flame sensing error or a high-temperature limit—the controller may prevent ignition to protect the system and occupants. A reset allows the cycle to begin again once the safety condition is confirmed clear.
After a reset, the furnace will attempt to relight. If the fault persists, ignition may fail again and the control may lock out once more. In such cases, a simple reset does not fix the root cause; diagnosing sensors, gas supply, airflow, and venting becomes essential.
When To Use The Gibson Furnace Reset Button
Use the reset button only after ensuring the safety conditions are met and addressing obvious causes. Typical scenarios include an overheat condition, a brief flame sensor issue, or an ignition fault that occurred during a normal cycle. If the cause is unknown, or if there is any risk of gas odor, avoid resetting and seek professional help immediately.
Do not repeatedly reset a furnace that fails to ignite. Repeated resets can mask a serious problem and may lead to additional damage or unsafe operation. If a reset does not resolve the issue after a single attempt and a reasonable wait, contact a licensed HVAC technician.
Step-By-Step Reset Procedure
Follow these steps to perform a safe Gibson furnace reset. If any step seems unsafe, stop and call a professional.
- Turn off the thermostat and switch off the furnace at the main power switch or breaker.
- Wait 30 seconds to allow residual power to discharge and for the system to cool slightly if it was running hot.
- Remove the access panel to locate the reset button. Confirm there is no visible gas leak or odor before proceeding.
- If a reset button is present, press and hold it for 3–5 seconds, then release.
- Restore power to the furnace by flipping the breaker back on or turning the furnace switch to the on position.
- Set the thermostat to heat mode and an appropriate temperature to trigger a normal startup.
- Observe the furnace as it attempts to start. If ignition occurs and the furnace runs normally, the reset has cleared the fault.
- If ignition fails again or the system re-locks out, do not keep retrying. Document any error codes or blinking lights and call a technician.
| Step | Action |
|---|---|
| 1 | Power down the system |
| 2 | Access the reset button location |
| 3 | Press reset for 3–5 seconds |
| 4 | Restore power and test ignition |
Common Issues That Trigger A Reset
- Dirty or faulty flame sensor that prevents reliable ignition
- Gas supply interruption or improper gas pressure
- Blocked venting or restricted exhaust causing incomplete combustion
- Clogged air filters reducing airflow and triggering high-limit safety
- Electrical faults on the control board or blower circuit
- Lockout due to repeated ignition failures or improper condensate drainage
Addressing the underlying cause is essential. A reset only clears the fault flag; the system must be able to sustain a safe ignition and continuous operation afterward.
Safety Precautions And Gas Furnace Safety
Gas furnaces involve potential hazards. If a gas odor is detected, evacuate the area and contact the gas utility or emergency services. Do not reignite or reset in a space with a suspected gas leak. Always shut off power to the furnace before opening any panels and avoid tampering with gas lines or burners beyond basic safe access.
When performing resets, ensure there is adequate combustion air and ventilation. Keep flammable materials away from the furnace and do not operate the unit with the access panel removed for extended periods. If there are signs of burning or unusual noises, stop and seek professional evaluation.
When To Call A Professional
A professional is recommended if the Gibson furnace repeatedly locks out after resets or if ignition never occurs. Frequent resets may indicate issues such as a dirty flame sensor, a failing gas valve, or a defective control board. Techs can diagnose using equipment and may test gas pressure, flame rectification, and electrical connections.
Contact a licensed HVAC technician if there is any uncertainty about safety, if you notice gas smells, persistent ignition failure, or changes in furnace performance despite resets. Professional service can prevent safety risks and extend equipment life.
Maintenance Tips To Avoid Frequent Resets
Regular maintenance can reduce the likelihood of unexpected resets. Schedule annual professional inspections and tune-ups to clean flame sensors, inspect burners, check gas pressure, and verify venting integrity. Replace air filters as recommended to maintain proper airflow and reduce the risk of high-temperature lockouts.
Keep the area around the furnace clear of dust and debris. Ensure ductwork is sealed and that there are no obstructions in the exhaust or intake paths. Periodic thermostat calibration helps prevent false fault detections that trigger resets.
Gibson Furnace Models And Reset Button Variations
Not all Gibson model lines include a dedicated reset button. Some rely on cycling power or on internal safety switches for resets. Others may integrate reset functionality into a circuit board with LED status indicators or diagnostic codes. Always consult the specific model’s manual for exact reset procedures and button locations.
When in doubt, contact Gibson customer support or a qualified HVAC technician for model-specific guidance. Understanding model variations helps ensure the correct reset method is used and reduces the risk of improper handling.