Goodman furnace not turning on

Is your Goodman furnace not turning on? If so, you may be experiencing a common issue that many homeowners face. In this troubleshooting guide, we will explore some of the most common problems that can cause a Goodman furnace to not turn on, and provide step-by-step instructions to help you diagnose and fix the issue.

One of the first things to check when your Goodman furnace is not igniting is the pilot light. A pilot light that is not lit or is not staying lit can be a common culprit for furnace problems. We will show you how to check the pilot light on your Goodman furnace and provide tips for proper troubleshooting.

If your Goodman furnace is not igniting and the pilot light is not the issue, it could be a problem with the furnace control. The control board or control module may have failed, preventing the furnace from turning on. We will discuss how to diagnose and troubleshoot a control failure on a Goodman furnace.

In some cases, a Goodman package unit may experience issues that prevent it from turning on. This troubleshooting guide will provide tips for troubleshooting a Goodman package unit and help you determine if the issue is with the furnace or the package unit.

Whether your Goodman furnace won’t stay lit or the heat is not working, this troubleshooting guide will cover a wide range of problems and offer solutions to get your furnace back up and running. From checking for flame to diagnosing control failures, we will provide the knowledge you need to troubleshoot and fix your Goodman furnace issues.

Check the Power Supply

If your Goodman furnace is not turning on, the first thing you should check is the power supply. Make sure that the furnace is receiving power by checking the following:

Check the circuit breaker: Locate the circuit breaker for the furnace and check if it has tripped. Reset the breaker if necessary.
Check the power switch: Make sure the power switch on the furnace is in the “on” position.
Check the power cord: Ensure that the power cord is securely plugged into an electrical outlet.
Check the pilot light: If you have a gas furnace, check if the pilot light is lit. If not, you may need to relight it or press the reset button if your Goodman furnace has one. Refer to the manufacturer’s instructions on how to light the pilot light.

If you have an electric furnace, ensure that the heating elements are receiving power and are not damaged.

If all of these checks confirm that the power supply is working properly, but your Goodman furnace is still not turning on, it may be time to consult a professional HVAC technician for further troubleshooting and repair.

Inspect the Thermostat

If your Goodman furnace is not turning on, the first component you should inspect is the thermostat. The thermostat is responsible for controlling the temperature of your home and communicating with the furnace. If there is an issue with the thermostat, it can cause the furnace not to turn on or heat properly.

Here are a few troubleshooting steps you can take to inspect the thermostat:

Check the settings: Make sure the thermostat is set to the desired temperature and heating mode (heat, cool, or auto). Sometimes, the thermostat may accidentally be set to a lower temperature or a different mode, which can prevent the furnace from turning on. Adjust the settings as needed.
Check the power: Ensure that the thermostat has power. If it is battery-powered, replace the batteries. If it is hardwired, check the circuit breaker to ensure it hasn’t tripped. A lack of power can cause the thermostat to stop communicating with the furnace.
Inspect the wiring: Visually inspect the thermostat wires for any damage or loose connections. If you notice any issues, such as frayed wires or disconnected terminals, you may need to repair or replace the wiring to restore proper communication between the thermostat and furnace.
Test the thermostat: If you suspect the thermostat is faulty, you can try testing it with a multimeter. Set the multimeter to the appropriate voltage setting and place the probes on the thermostat terminals. The multimeter should indicate a voltage reading if the thermostat is functioning correctly. If no voltage is detected, you may need to replace the thermostat.

By inspecting the thermostat and addressing any issues, you can potentially resolve the problem of your Goodman furnace not turning on or heating properly. If the thermostat appears to be in working order, there may be other underlying issues with the furnace itself that require further troubleshooting or professional assistance.

Clean or Replace the Air Filter

If your Goodman furnace is not turning on, one possible cause could be a dirty or clogged air filter. A dirty air filter can restrict airflow and cause the furnace to overheat, which may trigger a safety feature that turns off the burners.

To clean or replace the air filter, follow these steps:

Turn off the power to the furnace by switching off the electrical breaker.
Locate the air filter. In most Goodman furnaces, the air filter is located near the blower motor.
If the filter is reusable, remove it and gently clean it with a vacuum or by rinsing it with water. Let it dry completely before reinstalling it.
If the filter is disposable, remove it and replace it with a new one of the same size and type. Make sure to follow the manufacturer’s instructions when installing the new filter.
After cleaning or replacing the air filter, turn on the power to the furnace and see if it starts working.

It’s important to check and clean or replace the air filter regularly, especially during periods of heavy use. A dirty air filter can not only cause the furnace to stop working, but it can also reduce the efficiency of the system and lead to higher energy bills.

If cleaning or replacing the air filter does not solve the issue and your Goodman furnace is still not turning on, it may be necessary to consult a professional HVAC technician for further troubleshooting and repair.

Verify the Gas Supply

If your Goodman furnace is not turning on or if it is not heating properly, the first thing you should check is the gas supply. Without a sufficient supply of gas, the furnace will not be able to produce heat.

Here are a few troubleshooting steps you can take to verify the gas supply:

Check other gas appliances: Make sure that other gas appliances in your home, such as your water heater or stove, are functioning properly. If these appliances are also experiencing issues, it may indicate a problem with the gas supply to your home.
Inspect the gas valve: Locate the gas valve on your Goodman furnace and ensure that it is fully open. If the valve is closed or partially closed, it may be preventing gas from flowing to the furnace.
Check the gas meter: Locate the gas meter outside your home and check if the gas meter is running. If the meter is not moving, it may indicate a problem with the gas supply to your home.
Test the gas pressure: You can use a gas pressure tester to check if the gas pressure is at the appropriate level. Consult the manual for your Goodman furnace to determine the correct gas pressure range.

If you have followed these steps and determined that there is an issue with the gas supply, it is recommended to contact a professional HVAC technician for further assistance. They will be able to diagnose and resolve any issues with the gas supply to your Goodman furnace.

Examine the Igniter

If your Goodman furnace is not turning on, it could be due to a problem with the igniter. The igniter is responsible for lighting the gas burner and starting the heating process.

Here are some steps to examine the igniter:

Turn off the power: Before inspecting the igniter, make sure to turn off the power to the furnace. This will ensure your safety during the troubleshooting process.
Locate the igniter: The igniter is typically located near the burners. It is a small, rectangular component with wires connected to it.
Visually inspect the igniter: Look closely at the igniter for any signs of damage or wear. A cracked or broken igniter will prevent it from lighting the gas burner.
Check for continuity: Use a multimeter to check if the igniter has continuity. This will help determine if the igniter is functioning properly. If there is no continuity, it may need to be replaced.
Clean the igniter: If the igniter appears dirty or covered in debris, gently clean it with a soft brush or cloth. This can help improve its performance.
Verify the voltage: Ensure that the igniter is receiving the correct voltage. If there is no voltage, it may indicate a control failure or a wiring issue that needs to be addressed.

If you have followed these steps and the igniter still seems to be the issue, it is recommended to consult the Goodman furnace troubleshooting manual or contact a professional for further assistance.

Remember, troubleshooting a Goodman furnace can be complex, and it’s important to prioritize your safety. If you are unsure or uncomfortable with any step of the troubleshooting process, it is best to seek professional help.

Test the Flame Sensor

If your Goodman furnace is blowing cold air or not staying lit, it could be due to a malfunctioning flame sensor. The flame sensor is responsible for detecting the presence of a flame in the burner. If it fails to do so, the furnace will cut off the gas supply to avoid a potentially dangerous situation.

To test the flame sensor, you can follow these steps:

Turn off the power to the furnace. You can do this by shutting off the breaker in your electrical panel.
Locate the flame sensor. It is usually a metal rod located near the burner assembly.
Disconnect the flame sensor from its wiring harness.
Use a fine-grit sandpaper or emery cloth to gently clean the flame sensor. Over time, the sensor can become coated with carbon or other debris, which can interfere with its operation.
Reconnect the flame sensor to its wiring harness.
Turn the power back on to the furnace.
Observe the burner assembly while the furnace goes through its ignition sequence.

If the flame sensor is working properly, you should see a small blue flame shortly after the ignition sequence begins. If the flame sensor is not working, you may notice that the burner does not light up or that it quickly goes out after ignition.

If cleaning the flame sensor does not solve the issue, it may be necessary to replace the sensor. Consult the owner’s manual for your Goodman furnace to find the appropriate replacement part and instructions for installation.

In conclusion, it is not normal to smell gas from your furnace or exhaust. If you do, it is crucial to take immediate action and address the issue to ensure your safety. Contacting a professional and following the necessary steps can help identify the cause of the gas smell and resolve it promptly.“Natural gas furnace blowing cold air”

Remember to always follow safety precautions when working with gas appliances. If you are unsure or uncomfortable performing any of these troubleshooting steps, it is recommended to contact a professional HVAC technician for assistance.

By following these steps to test the flame sensor, you can troubleshoot common issues with a Goodman furnace not turning on or not staying lit.

Inspect the Blower Motor

If your Goodman furnace won’t ignite or heat properly, one possible cause could be an issue with the blower motor. The blower motor is responsible for circulating the heated air throughout your home. Whether you have a gas or electric furnace, the blower motor is an essential component that needs to be functioning correctly.

Here are some troubleshooting steps to inspect the blower motor:

Check the power supply: Ensure that your furnace is receiving power. Check the power switch and circuit breaker to make sure they’re turned on and functioning properly.
Inspect the blower motor belt: If your furnace has a belt-driven blower motor, check the condition of the belt. If it’s loose, damaged, or broken, it may need to be replaced.
Listen for unusual noises: Turn on your furnace and listen for any unusual noises coming from the blower motor. Grinding, squeaking, or rattling sounds could indicate a problem that needs to be addressed.
Clean the blower motor: Dust and debris can accumulate on the blower motor and hinder its performance. Use a soft brush or vacuum cleaner to remove any dirt or debris that may have collected.
Inspect the blower wheel: The blower wheel spins to circulate the air. Make sure it’s not obstructed by any debris. If it’s dirty, clean it using a brush or vacuum cleaner.
Check the blower motor capacitor: The capacitor provides an extra boost of power to the blower motor during startup. If it’s faulty, the blower motor may not function properly. Test the capacitor using a multimeter or consult a professional for assistance.

If you’ve followed these troubleshooting steps and the blower motor still isn’t working, it may be a more complex issue that requires professional repair or replacement. Consulting the Goodman furnace troubleshooting manual or contacting a qualified technician is recommended.

Remember, dealing with a furnace can be dangerous, especially if you’re not experienced in HVAC repair. Always prioritize your safety and consult a professional if you’re unsure about troubleshooting or repairing your furnace.

Check the Circuit Breaker

If your Goodman furnace is not turning on, one of the first things you should check is the circuit breaker. A tripped circuit breaker can prevent power from reaching the furnace, causing it to not work properly.

Follow these steps to check the circuit breaker:

Locate the circuit breaker panel in your home. It is usually found in the basement, utility room, or garage.
Open the circuit breaker panel door.
Look for the circuit breaker labeled for your furnace. It is typically labeled as “Furnace,” “HVAC,” or something similar.
Check if the circuit breaker is in the “On” position. If it is in the “Off” position or somewhere in between, it may have tripped.
If the circuit breaker is tripped, switch it all the way to the “Off” position and then back to the “On” position.
Wait a few minutes to see if the furnace turns on. If it does, you have successfully reset the circuit breaker.

If the circuit breaker keeps tripping or if the furnace still doesn’t turn on after resetting the breaker, there may be a more serious issue with the electrical system. In this case, it is recommended to contact a professional HVAC technician to diagnose and repair the problem.

Checking the circuit breaker is one of the first troubleshooting steps in the Goodman furnace troubleshooting guide. By ensuring that the circuit breaker is not tripped or malfunctioning, you can eliminate a potential electrical problem and narrow down the possible causes of your Goodman furnace not turning on.

Verify the Overload Switch

If your Goodman HVAC heater is not working and you have checked the other possible causes like a faulty igniter or a clogged air filter, it is worth verifying the overload switch. The overload switch is a safety device that is designed to prevent the furnace from overheating.

Possible symptoms:

Goodman furnace won’t ignite
Goodman electric furnace not heating
Goodman furnace no light
Goodman furnace not igniting
Goodman furnace not staying lit
Goodman furnace won’t stay lit
Goodman furnace no flame
Goodman furnace not working no codes
Goodman furnace blowing cold air
Goodman heater not blowing hot air
Goodman heater not working
Goodman furnace heat not working
Goodman furnace not heating

Instructions:

Turn off the power to the furnace by switching off the circuit breaker or removing the fuse.
Locate the overload switch, which is usually a small red or silver button located near the blower motor or on the burner assembly.
Press and hold the overload switch for a few seconds.
Turn the power back on and try starting the furnace.
If the furnace starts working, the overload switch may have tripped due to overheating. This could be caused by a blocked or restricted airflow. Check the air filter, vents, and ducts for any obstructions and clean or remove them if necessary.
If the overload switch keeps tripping or the furnace still does not start, it is recommended to contact a professional HVAC technician for further troubleshooting and repair.

Tip: Regular maintenance, such as cleaning or replacing the air filter, can help prevent the overload switch from tripping and ensure proper airflow in your Goodman furnace.

Examine the Control Board

If your Goodman electric furnace is not heating or experiencing other issues such as control failure, not staying lit, or not blowing hot air, it’s important to examine the control board. The control board is the central component that manages and regulates the furnace’s operations.

Here are some troubleshooting steps to examine the control board:

Check for power: Ensure that the furnace is receiving power by checking the circuit breaker or fuse box. If there is a power issue, resolve it before proceeding.
Inspect for loose connections: Look for any loose or disconnected wires on the control board. Tighten or reconnect them if necessary.
Check for burnt components: Examine the control board for any burnt or damaged components. Burnt or charred spots may indicate a fault in the control board, requiring professional assistance or replacement.
Reset the control board: If your Goodman furnace has a control board with a reset button, press it to reset the board. This may resolve minor issues and restore proper functioning.
Refer to the troubleshooting manual: Consult the Goodman furnace troubleshooting manual for specific instructions related to your furnace model and control board. The manual can provide detailed information on how to diagnose and fix control board problems.

If none of these steps resolve the issue with your Goodman furnace, you may need to contact a qualified technician for further diagnosis and repair.

Remember to exercise caution and follow safety guidelines when working with electrical components.

Test the Limit Switch

If your Goodman furnace won’t light or is blowing cold air, it could be due to a malfunctioning limit switch. The limit switch is a safety device that monitors the temperature in the furnace and shuts off the burner if it gets too hot. Testing the limit switch can help determine if it is the cause of your problem.

Here are steps to test the limit switch:

Turn off power to the furnace by switching off the circuit breaker or removing the fuse.
Locate the limit switch, which is typically located near the main burner chamber.
Remove the wires connected to the limit switch by gently pulling them off.
Using a multimeter set to the continuity or resistance mode, test the limit switch by placing the multimeter probes on the terminals of the switch.
If the limit switch is functioning properly, the multimeter should display a reading of zero or close to zero.
If the limit switch is faulty, the multimeter will display an infinite reading or no reading at all.

If the limit switch fails the test, it will need to be replaced. Consult the Goodman furnace troubleshooting manual for the correct part number and installation instructions.

It’s important to note that a faulty limit switch can be a symptom of a larger issue with your Goodman furnace. If you’re not comfortable troubleshooting the problem yourself, it’s recommended to contact a professional HVAC technician to inspect and repair your furnace.

Inspect the Pressure Switch

If your Goodman furnace is not turning on, one possible culprit could be a malfunctioning pressure switch. The pressure switch is an important safety device that ensures proper ventilation and prevents the furnace from overheating. Here are some troubleshooting steps to inspect the pressure switch:

Check for control failure: Before inspecting the pressure switch, make sure to rule out any control failures. Check if the thermostat is set correctly and that the furnace is receiving power.
Verify the pressure switch’s function: Locate the pressure switch, which is usually located near the inducer motor. Remove the vacuum lines connected to the switch and carefully blow air into the switch. You should hear a click sound, indicating that the switch is functioning properly. If there is no click, the pressure switch may need to be replaced.
Inspect for blockages: If the pressure switch is not functioning properly, there may be a blockage in the venting system. Check for any obstructions such as bird nests, debris, or ice buildup in the venting pipes. Clear any blockages that you find.
Check the condensate drain: A clogged condensate drain can also cause pressure switch issues. Inspect the condensate drain trap and make sure it is not blocked. Clean out any debris or buildup that may be obstructing the drain.
Call a professional: If you have completed the above steps and the pressure switch still does not function properly, it is recommended to call a professional HVAC technician for further inspection and repair. They will have the necessary tools and expertise to diagnose and fix the issue.

By inspecting the pressure switch and following these troubleshooting steps, you can identify and resolve issues that prevent your Goodman furnace from turning on. Remember to always prioritize safety and consult a professional if needed.

Verify the Rollout Switch

If your Goodman HVAC heater is not working, it could be due to an issue with the rollout switch. The rollout switch is a safety feature that is designed to shut off the furnace if it detects a flame rollout, which occurs when the flames from the burners are not properly contained within the combustion chamber.

To verify if the rollout switch is the cause of the problem, follow these steps:

Turn off the power to the furnace.
Locate the rollout switch. It is usually located near the burners or on the side of the combustion chamber.
Check for any physical damage or signs of overheating on the rollout switch. If there is any damage, it may need to be replaced.
If the rollout switch appears to be in good condition, you can test it using a multimeter. Set the multimeter to the continuity or resistance setting.
Disconnect the wires from the rollout switch and touch the multimeter probes to the terminals on the rollout switch. If there is no continuity or the resistance reading is too high, the rollout switch may be faulty and need to be replaced.

If the rollout switch is the cause of the problem, it is important to address the issue promptly. A faulty rollout switch can prevent the furnace from operating properly and can pose a safety risk. It is recommended to consult the Goodman furnace troubleshooting manual or contact a professional HVAC technician to properly diagnose and repair the issue.

Examine the Thermocouple

If your Goodman furnace is not turning on and you are experiencing issues such as no heat or blowing cold air, it is important to examine the thermocouple. The thermocouple is a safety device that detects whether the pilot flame is lit. If the thermocouple senses that there is no flame, it will shut off the gas supply to prevent any potential gas leaks. Here are some steps to examine the thermocouple:

Turn off the power supply to the furnace.
Locate the thermocouple, which is usually next to the pilot light.
Inspect the thermocouple for any signs of damage or wear.
If the thermocouple looks damaged, it may need to be replaced. Consult the Goodman furnace troubleshooting manual or contact a professional for assistance.
If the thermocouple appears to be in good condition, carefully clean it using a soft cloth to remove any dirt or debris that may be obstructing the sensor.
Once the thermocouple is clean, turn the power supply back on and relight the pilot light, following the instructions in the Goodman furnace troubleshooting manual.

It is important to note that if you have a newer model of Goodman furnace, it may have an electronic ignition rather than a pilot light. In this case, you will not have a thermocouple to examine. Instead, you may need to check the ignition system or consult the Goodman furnace troubleshooting manual for further guidance.

Contact a Professional Technician

If you have gone through the troubleshooting steps for your Goodman furnace and it is still not turning on, it may be time to contact a professional technician. Trying to repair complex heating systems like a Goodman HVAC heater without proper knowledge and training can be dangerous and can result in further damage to the system.

A professional technician will have the expertise and experience to diagnose and fix the issue with your Goodman furnace. They will be able to identify any underlying problems that may be causing your furnace to not turn on, such as a control failure or a lack of ignition.

Attempting to troubleshoot a Goodman furnace that is blowing cold air, has no flame, or is not staying lit yourself can lead to more serious issues if not handled correctly. It is best to rely on a trained professional who understands the complexities of the unit and can ensure a safe and proper repair.

When contacting a professional technician, provide them with all the information you have gathered from troubleshooting your Goodman furnace. This will give them a head start in diagnosing the problem and may save time during the repair process.

Remember, safety should always be a priority. If you are unsure about any aspect of troubleshooting your Goodman furnace or are uncomfortable performing any repairs yourself, it is best to contact a professional technician who can ensure the job is done safely and correctly.

Q&A:

Why is my Goodman furnace not turning on?

There are several reasons why your Goodman furnace may not be turning on. It could be a problem with the thermostat, a tripped circuit breaker, a clogged air filter, or a malfunctioning igniter. It is best to troubleshoot each of these components to determine the exact cause.

How can I check if the thermostat is the problem?

To check if the thermostat is the problem, start by setting the thermostat to a higher temperature than the current room temperature. If the furnace does not turn on within a few minutes, you can try bypassing the thermostat by connecting the R and W wires together. If the furnace turns on, then the thermostat is likely the issue and may need to be replaced.

What should I do if the circuit breaker is tripped?

If the circuit breaker is tripped, first try resetting it by flipping the switch to the “off” position and then back to the “on” position. If the breaker continues to trip, it could indicate a more serious electrical problem and you should contact a professional electrician to inspect and repair the issue.

How often should I replace the air filter in my Goodman furnace?

It is recommended to replace the air filter in your Goodman furnace every 1 to 3 months, depending on factors such as the level of dust and pet hair in your home. A clogged air filter can restrict airflow and cause the furnace to overheat, which may prevent it from turning on. Regularly replacing the air filter can help prevent this issue.