The Goodman furnace reset button is a small but important safety feature that can restore operation after certain faults. This guide explains where the reset button is located, when it should be used, step-by-step reset procedures, troubleshooting if the unit won’t reset, and preventive maintenance tips. Follow safety guidance closely and call a licensed HVAC technician if the furnace repeatedly requires resetting.
| Issue | Quick Action | When To Call A Pro |
|---|---|---|
| Furnace Locked Out | Locate & Press Reset Button Once | If It Trips Again |
| No Power | Check Breaker, Switch, Thermostat | Wiring Or Control Board Suspected |
| Short Cycling | Inspect Air Filter & Vents | Persistent Cycling Or Strange Noises |
What Is The Goodman Furnace Reset Button
The reset button on many Goodman furnaces is a manual safety feature designed to reset the furnace’s internal safeties after a fault, particularly for the integrated ignition control or the limit switch. It Is Not A Routine Control and should only be used for one-time resets following clear troubleshooting steps.
Where To Locate The Reset Button On A Goodman Furnace
The reset button location varies by model. Common places include inside the blower compartment on the furnace cabinet, on the control board, or near the gas valve assembly. Users should refer to the furnace data plate for the exact model number and consult the manual for the precise location.
If the manual is unavailable, the reset button is often a small red or black button recessed in plastic or near a labeled switch. Never Pry Open Panels Without Turning Off Power.
When It Is Appropriate To Use The Reset Button
The reset button should be used after addressing the underlying cause of a fault condition, such as an interrupted ignition or overheating. Typical scenarios include a one-time failed ignition, blower motor overload trip, or temporary flame sensor fault.
It should not be used as a quick fix for ongoing problems. If the furnace trips repeatedly within a short time, further diagnosis is needed to prevent safety hazards and equipment damage.
Step-By-Step Procedure To Reset A Goodman Furnace
Safety First
Before attempting any reset, turn off power to the furnace at the service switch and circuit breaker. Confirm the thermostat is set to off and gas supply is stable if any gas work is necessary.
Reset Steps
- Turn Off Power: Switch off the furnace at the service switch and the breaker to isolate electrical power.
- Wait: Allow one to five minutes for capacitors and control circuits to discharge. This prevents accidental short-cycling.
- Open Access Panel: Remove or unlatch the access panel to reach the control area, following manufacturer instructions.
- Locate The Reset Button: Identify the small recessed button, often red or black, labeled RESET or located near the control board.
- Press Once Firmly: Press and release the reset button once. Do not press repeatedly. One reset only helps avoid masking recurring faults.
- Close Panel And Restore Power: Replace the access panel, then turn on the breaker and service switch.
- Restart Furnace: Set the thermostat to call for heat and observe a full sequence: blower, ignition, and burner operation. Monitor for normal operation for at least 10–15 minutes.
Troubleshooting If The Furnace Does Not Reset
If pressing the reset button does not restore operation, follow these diagnostic steps. Start with basic electrical checks and progress to component inspection.
Check Power And Controls
Verify the breaker and service switch are on. Test the furnace’s power at the control board with a multimeter if comfortable doing so. Confirm the thermostat has working batteries and proper settings.
Inspect Airflow And Filters
A clogged air filter or blocked return can cause overheating and trips. Replace or clean filters and ensure vents are open. Restricted airflow Is A Common Cause of repeated reset requirements.
Examine Flame Sensor And Ignition
A dirty flame sensor or faulty ignitor may cause ignition failure. Clean the flame sensor rod with emery cloth or a soft abrasive, following safety steps, or replace it if necessary. Ignitor cracks or wear require replacement.
Check Venting And Pressure Switch
On high-efficiency Goodman units, a blocked flue or failed inducer can trip the pressure switch and prevent ignition. Inspect vent terminations and condensate drains, and ensure inducer motor operation.
Look For Error Codes
Many Goodman furnaces flash LED codes on the control board. Count flashes and reference the service manual to interpret the code. Error Codes Provide Targeted Diagnosis.
Common Causes Of A Furnace Reset Trip
- Overheating From Restricted Airflow: Dirty filters, closed vents, or blocked returns.
- Ignition Failure: Faulty ignitor, dirty flame sensor, or gas valve issues.
- Pressure Switch Or Venting Problems: Blocked exhaust, closed vent caps, or inducer failure.
- Electrical Faults: Tripped breakers, loose wiring, or failing control boards.
- Blower Motor Overload: Motor wear, capacitor failure, or jammed blower wheel.
Safety Precautions And Best Practices
Resetting a furnace involves exposure to electrical and gas components. Always shut off power before accessing internals and avoid using the reset button repeatedly. Wear safety gloves and eye protection when inspecting components.
If there is any sign of gas smell, unusual noises, sparks, or visible damage, evacuate the area and contact the gas company or an HVAC professional immediately. Do Not Attempt To Repair Gas Components Without Proper Training.
When To Call A Professional HVAC Technician
If the furnace requires resetting more than once, shows error codes that cannot be resolved with basic maintenance, or displays signs of major component failure, contact a licensed HVAC technician. Professionals should handle gas valve replacement, control board diagnostics, inducer motor repair, and complex electrical troubleshooting.
Schedule prompt service for intermittent operation, carbon monoxide concerns, or if the technician recommends further inspection after preliminary checks.
Maintenance Tips To Reduce Resets And Improve Reliability
- Replace Or Clean Air Filters Every 1–3 Months Depending On Use.
- Keep Return And Supply Vents Clear Of Furniture And Debris.
- Schedule Annual Heating System Tune-Ups With A Licensed Technician.
- Clean Flame Sensors And Inspect Ignitors During Routine Service.
- Inspect Vent Terminals, Condensate Traps, And Drain Lines For Blockages.
- Verify Thermostat Calibration And Wiring Integrity.
Model-Specific Notes And Manufacturer Guidance
Goodman provides manuals and wiring diagrams for each model. Locate the furnace model number on the data plate and consult the manufacturer’s literature for exact reset button location and LED error code tables. Manufacturer instructions should take priority over general guidance.
Some modern Goodman units use electronic reset sequences and protective lockouts that require a certified technician to clear or program. Check The Manual Before Forcing Resets.
Frequently Asked Questions
Is It Safe To Press The Reset Button On A Goodman Furnace?
Yes, when used properly for a one-time reset after addressing the underlying issue. It is not safe to repeatedly press the reset button without diagnosing the cause.
How Many Times Can The Reset Button Be Pressed?
Pressing the reset button once is standard practice. Repeated resets may indicate a serious fault and risk damaging components or bypassing safety systems.
Can Homeowners Replace Flame Sensors Or Ignitors?
Homeowners with basic mechanical skills can replace flame sensors or ignitors following the manual and turning off power. If unsure, hire a technician to avoid causing further damage.
What Do The LED Flash Codes Mean?
LED flash codes vary by model and indicate specific faults like ignition failure, pressure switch problems, or limit trips. Refer to the furnace service manual for the code list and recommended actions.
Why Does The Furnace Trip Only When Running For A Long Time?
Long run trips commonly point to overheating due to restricted airflow, failing blower motors, or closed registers. Check filters, vents, and blower operation first.
Useful Resources And References
Refer to the Goodman website for official manuals and replacement parts. Use trusted HVAC training resources for interpretation of LED codes and safety procedures. Always verify part compatibility using the exact furnace model number.
When in doubt, contact a licensed HVAC technician for safe diagnosis and repair. Professional service protects household safety and extends the lifespan of the furnace.