The Gibson furnace reset button is a simple safety feature that helps restart a furnace after certain faults. This guide explains what the reset button does, where to find it, safe reset procedures, common causes for trips, troubleshooting steps, and when to call a professional. The information helps homeowners quickly assess issues while avoiding hazardous actions.
| Item | Details |
|---|---|
| Reset Button Location | On or near the blower housing or control panel; small red or yellow button |
| Primary Function | Protects motor/controls by requiring manual restart after an overheat or electrical fault |
| Common Trip Causes | Overheating, blocked vents, blower motor failure, short circuits |
| When To Call A Technician | Repeated trips, burning smell, visible damage, no ignition after reset |
What The Gibson Furnace Reset Button Does
The reset button is a manual safety switch designed to interrupt power to components such as the blower motor or control circuit after an overload, overheating, or electrical fault. It prevents the furnace from running in a potentially damaging or unsafe condition until a homeowner or technician intentionally restarts it.
Key Point: A single reset typically indicates a temporary issue; repeated trips point to an underlying problem that requires diagnosis.
Where To Find The Reset Button On Gibson Furnaces
The reset button location varies by model but commonly sits on the blower motor housing, service panel, or the main control box inside the furnace cabinet. It is often a small button colored red or yellow and may be recessed to prevent accidental presses.
To locate it, turn off power at the electrical switch or breaker, remove the furnace access panel, and visually inspect the control area and blower housing for a labeled button or small push-button switch.
Safety Precautions Before Resetting
Before pressing the reset button, always turn off power to the furnace at the switch or circuit breaker and wait at least 10–15 minutes for components to cool. Never attempt a reset if there are signs of burning, melted wiring, or a strong gas odor.
Wear protective gloves and eye protection if accessing internal components. If the furnace is gas-powered and a strong odor of gas is present, leave the home immediately and call the gas company or emergency services; do not attempt to reset.
How To Safely Reset A Gibson Furnace Step-by-Step
1. Turn off the furnace power at the switch and set the thermostat to “Off.” Ensure the circuit breaker is off if a wall switch isn’t present.
2. Wait 10–15 minutes to allow the motor and heat exchanger to cool. Confirm there is no unusual smell or visible damage.
3. Remove the furnace access panel to expose the blower and control areas. Locate the reset button—usually small and red or yellow, sometimes recessed.
4. Press the reset button firmly once and release. Do not hold down the button for extended periods; a single firm push is sufficient.
5. Replace the access panel, restore power at the breaker or switch, and set the thermostat to the desired setting. Monitor the furnace performance for several minutes.
Key Point: If the furnace does not restart or trips again immediately, turn the power off and proceed to troubleshooting or call a professional.
Common Causes For The Reset Button Tripping
Overheated Blower Motor
A blocked return or discharge, failed motor bearings, or excessive friction can cause the blower motor to overheat and trip the reset to prevent motor damage.
Blocked Venting Or Airflow Restrictions
Clogged air filters, closed supply registers, or obstructed return vents restrict airflow, raising heat exchanger temperatures and triggering safety switches including the reset button.
Electrical Short Or Wiring Fault
Damaged wiring, loose connections, or short circuits in the motor or control board can cause the reset to trip. These faults may present as burning smells, visible charring, or intermittent operation.
Control Board Or Component Failure
A failing control board, relay, or motor capacitor can cause abnormal current draw or improper sequencing, resulting in trips. Component failure often causes repeated resets after manual intervention.
Troubleshooting Steps After A Reset Trip
1. Check And Replace The Air Filter: Dirty filters restrict airflow. Replace with the correct MERV-rated filter and monitor performance.
2. Inspect Vents And Registers: Ensure supply and return vents are open and free of obstructions like furniture or rugs.
3. Examine The Blower Motor: With power off, check the motor for debris, loose mounting, or seized bearings. Spin the blower wheel to sense free rotation.
4. Look For Electrical Issues: Inspect wiring for discoloration, melt marks, or loose terminals. Smell for burned insulation. If electrical damage is suspected, leave the power off and contact a technician.
5. Check Condensate And Drainage (High-Efficiency Models): A clogged condensate line or float switch can cause safety trips. Clear blockages and test the drain pan and pump if present.
6. Monitor After Reset: After a safe reset and power restoration, observe the furnace for abnormal noises, cycling, or immediate re-tripping. Note timing and conditions for technician diagnostics.
When Repeated Resets Occur: Diagnosis And Next Steps
Repeated trips after resets are a red flag indicating a persistent fault. The most common culprits are failing blower motors, overheating due to airflow restrictions, or electrical shorts. Repeated manual resets can cause further damage and void warranties.
Action: Turn off the furnace and schedule professional service. A technician will perform electrical testing, measure motor current, check for restricted airflow, and test control board functions.
Preventive Maintenance To Avoid Reset Trips
Regular maintenance reduces the chance of trips. Replace air filters monthly or per manufacturer recommendations. Keep return vents clear and ensure proper blower wheel alignment and lubrication where applicable.
Annual professional tune-ups include cleaning burners, inspecting the heat exchanger, testing safety switches, and verifying electrical connections. These checks catch developing problems before they cause safety trips.
Costs And When To Call A Professional
Minor issues like filters or obstructed vents have low costs; blower motor replacement, control board repairs, or electrical fixes can range from a few hundred to over a thousand dollars depending on parts and labor.
Call a licensed HVAC technician if the reset trips repeatedly, if there is a burning smell, if components show visible damage, or if the homeowner is uncomfortable performing basic inspections. A licensed technician can safely diagnose gas, electrical, and mechanical faults.
FAQ: Quick Answers About The Gibson Furnace Reset Button
Is It Safe To Press The Reset Button?
Yes, if the homeowner has turned off power and verified no burning smells or visible damage. A single reset after cooling is typically safe; repeated resets without fixing the cause are unsafe.
Why Did The Reset Button Trip The First Time?
The first trip often signals a temporary overload, such as a momentary motor stall, brief electrical surge, or transient overheating. It warrants inspection even if a single reset restores operation.
Can A Homeowner Replace The Reset Button?
Replacing the reset button itself is relatively simple, but identifying and fixing the root cause may require electrical testing or motor replacement by a technician. Homeowners should avoid replacing wiring or major components themselves.
Does Resetting Affect Warranty?
Using the reset button according to manufacturer instructions generally does not void warranty. Repeated manual resets after known faults and unauthorized repairs could affect coverage; document issues and service history for warranty claims.
How To Communicate The Problem To A Technician
Provide the technician with clear observations: how often the reset tripped, any noises, smells, or patterns (e.g., trips after cycling on or after long runtime). Note the furnace model and serial number from the data plate.
Document the time of day the issue occurs and recent changes, such as new thermostats, air sealing work, or electrical events. This information speeds diagnosis and reduces service time.
Replacement Parts And Compatibility
Gibson furnaces share many components with other Rheem or Ruud-built units. When replacing a reset switch, confirm the part number and electrical ratings align with the furnace’s specifications.
Use OEM or approved aftermarket parts for reliability and to maintain warranty compliance. A technician can source compatible motor, control board, and switch replacements if needed.
Final Notes On Safety And Best Practices
Never ignore repeated reset trips; they are the system’s way of signaling danger. Perform basic checks—filters, vents, and visible wiring—then escalate to professional service when faults persist or when electrical or gas concerns exist.
Regular maintenance and prompt attention to unusual sounds or odors will extend furnace life and reduce the chance of sudden trips, costly repairs, and safety hazards.