Goodman Furnace Reset Button Guide: Locate, Reset, Troubleshoot, and Maintain

The Goodman Furnace Reset Button is a useful safety and troubleshooting control for many Goodman gas furnaces and packaged units. This guide explains what the reset button does, how to locate and use it safely, common reasons a reset is needed, and step-by-step troubleshooting when resetting does not restore operation. It focuses on safe, practical advice homeowners can use before calling an HVAC technician.

Item	Quick Fact
Purpose	Manual Restart After Safety Lockout
Location	On furnace control panel, near gas valve/limit switch, or on packaged unit access panel
Typical Action	Press and hold 5–30 seconds; may require power cycle
When Not To Press	Repeated trips without fixing root cause, smell of gas, electrical burning

What The Goodman Furnace Reset Button Is And Why It Exists

The reset button on many Goodman furnaces serves as a manual override for certain safety circuits that place the unit into lockout after an unsafe condition. Manufacturers add reset buttons to protect against unsafe operation following flame rollout, pressure switch failures, limit switch trips, or other safety interlocks. The button forces the control board to re-evaluate safety inputs and attempt a restart once the immediate cause has passed.

Where To Find The Reset Button On Goodman Furnaces

The reset button location varies by model and product type. Common placements include near the gas valve, on the main burner access panel, close to the limit switch, or on the furnace control board behind the front service panel. Packaged rooftop Goodman units may have the reset on an external service panel. The owner’s manual lists the exact location by model number.

How To Identify The Reset Button

The reset is often red or recessed and labeled “Reset” or “Manual Reset.” Some models use a small push button; others use a toggle or recessed pinhole requiring a tool. If the button is recessed, press firmly with a pen or screwdriver tip only when instructed.

When It Is Appropriate To Press The Reset Button

Use the reset button after verifying there are no ongoing safety hazards. Appropriate situations include a one-time ignition failure or a transient issue that triggered a safety lockout. If a furnace trips repeatedly, pressing the button without fixing the underlying cause can be dangerous and may hide a more serious fault.

Key Safety Check Before Resetting:

• Ensure no smell of gas. If gas odor is present, leave the home and call the gas company or 911.
• Confirm no visible electrical burning, smoke, or overheating.
• Turn off room fans or open flues that might cause backdrafts before restarting if suspected.

Step-By-Step Procedure To Reset A Goodman Furnace

The following steps outline a safe reset process for many Goodman furnaces. Models vary, so consult the furnace manual when available.

1. Turn Off Thermostat: Set to OFF to stop calls for heat.
2. Power Down Furnace: Switch the furnace power toggle or circuit breaker OFF for 30 seconds to allow controls to clear.
3. Open Access Panel: Remove the front service panel to access the control area and locate the reset button.
4. Perform Visual Inspection: Look for loose wires, burned connectors, corrosion, or signs of overheating and ensure the condensate drain is clear if applicable.
5. Press Reset Button: Press and hold the reset button for the time recommended by the manual (commonly 5–30 seconds). Release and wait for the control board to complete its start sequence.
6. Restore Power And Thermostat: Turn power back ON, set thermostat to desired temperature, and observe the furnace startup for proper ignition and blower operation.
7. Monitor Operation: Watch for repeated trips, unusual noises, or abnormal odors for at least 10–15 minutes.

Troubleshooting If Reset Doesn’t Work

If the furnace won’t restart after a reset, proceed methodically to diagnose the likely cause. Repeated lockouts indicate deeper issues that require correction before safe operation.

Common Causes And Checks

• Ignition Or Flame Failure: Faulty ignitor, clogged burners, or gas valve issues. Check for error codes on the control board and inspect the ignitor for cracks.
• Pressure Switch Or Venting Problem: Blocked venting, inducer motor failure, or dirty condensate trap can prevent proper pressure switch closure, causing immediate lockout.
• Limit Switch Trips: Overheating due to restricted airflow (dirty filter, closed vents, blocked return) trips the high-limit switch. Replace filters and ensure clear airflow before resetting.
• Electrical Issues: Loose wiring, failed relay, or control board faults can prevent restart. Inspect wire harnesses for secure connections.
• Condensate or Drain Problems: On high-efficiency units, a clogged condensate drain or trap can ground out safety switches, forcing lockout until cleared.

Reading Goodman Furnace Error Codes

Many Goodman control boards provide LED flash codes to indicate specific faults. Counting flashes or checking the diagnostic label inside the service panel can guide troubleshooting. Note the flash pattern and consult the furnace manual for exact meaning. Common codes: pressure switch stuck open, limit switch open, flame sensed when not expected, or control lockout.

Maintenance Tips To Avoid Frequent Resets

Regular maintenance reduces the likelihood of safety lockouts and the need for manual resets. Homeowners can perform several preventive tasks safely, while deeper checks should be left to licensed technicians.

• Replace or clean air filters every 1–3 months depending on usage and air quality.
• Keep around the furnace clear of clutter to ensure proper ventilation and prevent overheating.
• Inspect and clean burners and the blower assembly annually by a qualified technician.
• Verify intake and exhaust vents are free of debris, snow, or nests.
• Schedule annual professional tune-ups to test combustion, gas pressure, heat exchanger condition, and safety controls.

When To Stop Resetting And Call A Professional

Stop pressing the reset button and contact a licensed HVAC technician if the furnace: trips repeatedly after resets, emits gas odors, shows signs of overheating or burning, or presents visible cracks in the heat exchanger. Persistent safety trips often indicate failed components that require replacement or specialized testing.

Safety Considerations And Legal Notes

The reset button is a manual safety control intended for limited use. Repeated resets may void warranties or violate manufacturer guidance. HVAC work involving gas valves, combustion adjustments, and heat exchanger inspection should be performed only by trained, licensed professionals to meet safety and code requirements.

Example Scenario: Pressure Switch Trip And Reset Steps

A common scenario involves a pressure switch that opens due to a blocked vent line or a failing inducer motor. After power cycling and clearing the vent, a reset may allow normal startup. If the inducer motor is weak or the vent is partially blocked, the pressure switch may continue to trip and prevent a stable reset.

Troubleshooting Steps For This Scenario

1. Inspect outside vent termination for obstructions.
2. Check inducer motor operation and listen for unusual noises.
3. Confirm condensate trap and PVC drain lines are clear on condensing furnaces.
4. Monitor pressure switch tubing for holes or disconnections.

FAQ: Quick Answers About The Goodman Furnace Reset Button

How Long Should The Reset Button Be Held?

Most manuals recommend holding the reset for a few seconds up to 30 seconds. Follow the specific model instructions. Holding excessively long rarely helps and could stress components.

Will Pressing The Reset Button Fix All Problems?

No. The reset may clear temporary faults but will not fix mechanical failures, blocked vents, or electrical faults. Persistent issues need professional diagnosis.

Is It Safe To Reset Multiple Times?

Occasional resets are acceptable after safety checks. Repeated resets without addressing root causes is unsafe and not recommended.

Where To Find Model-Specific Reset Instructions?

The furnace’s owner or service manual contains model-specific guidance. Manufacturer websites and the label inside the service panel provide diagnostic code charts and reset procedures.

When Calling A Technician: Information To Provide

Provide clear details to speed diagnosis: model and serial number, the LED error code flash pattern, number of reset attempts, recent maintenance performed, and any unusual noises or odors. This helps technicians bring the right tools and replacement parts.

Information Item	Why It Matters
Model/Serial Number	Ensures correct parts and wiring diagrams
Error Codes	Identifies likely fault area
Symptoms	Helps prioritize tests (gas, electrical, airflow)
Recent Events	Weather, power outages, or maintenance can point to causes

Final Practical Advice

Use the Goodman Furnace Reset Button as a controlled troubleshooting step when safety checks are satisfied. Document any repeating faults and arrange professional inspection when resets do not provide a reliable restart. Regular maintenance and airflow care are the best defenses against frequent lockouts and unnecessary resets.

For Immediate Safety Concerns: If there is any gas smell, visible damage, or electrical burning, evacuate the property and contact emergency services or the gas company before attempting any reset or inspection.