Is My Furnace Blower Motor Bad? (Here Are Some Telltale Signs)

Author Belle Gentile

Posted Mar 19, 2023

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As the temperatures drop and winter approaches, having a functioning furnace becomes essential. However, if your HVAC system is not working properly, you may notice signs your furnace is failing. One of the most common issues you'll come across is a weakened airflow from your vents. If you find that your home never seems to warm up or it takes longer than usual to do so, this could be an indication of a problem with the blower motor.

Another red flag that points towards a failing furnace blower motor is when you start to notice odd noises coming from the system. Grinding or squeaking sounds could signify that there's something wrong with the blower motor. It's important not to ignore these signs as they can lead to more significant problems in the future, not just with your furnace but potentially also your electricity bill. When there’s an issue with your blower motor, it has to work harder than usual to push air through the ducts which means that problem energy bills generally increase.

If you're experiencing any of these issues, it could be time to investigate whether or not your blower motor needs attention. In this article, we're going to delve into some telltale signs of a bad blower motor and what steps you can take towards ceasing learn how to fix the issue at hand. Whether you're someone who enjoys DIY projects or prefers calling in professionals for assistance, we've got everything covered here.

Beginning and Ceasing: Learn How to Control Your Actions

When it comes to your furnace, understanding the beginning and ceasing of a full heating cycle is crucial. There are several frustrating indicators that your furnace may be failing, such as things repeated cycling or the fan motor not turning on. However, one of the primary reasons for furnace failure is a faulty heat sensor.

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The heat sensor acts as a safety mechanism for your furnace, preventing it from overheating and causing a fire. If the heat sensor is malfunctioning, your furnace may shut off before completing a full heating cycle or fail to turn on altogether. Regular maintenance and inspection by a professional can help detect any issues with your furnace's heat sensor and prevent costly repairs in the future. Don't wait until it's too late - learn how to control your actions when it comes to taking care of your furnace.

Supplies You’ll Need For Testing your Furnace Control Board

If you suspect that your furnace is failing, the first thing you should do is check the control board. The good news is that this isn't a difficult task to accomplish, especially if you have the right tools. The bad news is that you will need more than just a good screwdriver to test your furnace control board.

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To begin with, you'll require a voltage meter. This handy tool will help you measure the electrical activity on your control board. A solid meter will provide accurate readings, so it's worth making sure yours is up-to-date and calibrated correctly. In case you'll need to access the furnace's door switch or other hard-to-reach areas, make sure to have some good quality screwdrivers in different sizes too.

Once you've got the voltage meter and screwdrivers sorted, it's time to grab some electrical tape. It's always better to be safe than sorry when dealing with electricity, so we strongly recommend simple electrical tape. This will help keep any wires from accidentally touching during testing and causing further damage to your control board. With these supplies on hand, you'll be ready to start testing your furnace control board and getting your heating system back up and running again in no time!

1. Check your furnace diagnostics

The first step in diagnosing a failing furnace is to check the diagnostic information available on the unit. This information is typically displayed through LED lights, glass ports, and access panels located on the unit. By accessing these features, you can diagnose issues with the furnace and identify error codes found on the control board.

To access this diagnostic information, consult your furnace manual for instructions on how to open the lower access panel or remove the glass port cover. Once you have access to these features, pay attention to any LED lights that are illuminated or error codes that are displayed. These indicators can help pinpoint which components of the furnace are experiencing issues and whether low voltage is present within the system.

By taking this first step in checking your furnace diagnostics, you can better understand what may be causing your furnace to fail and determine if professional repair or replacement is necessary.

2. Remove the access panels

Step 2 of diagnosing a failing furnace involves removing the access panels. These panels provide you with access to the interior furnace components that you need to inspect and test. To remove the access panels, you first need to locate them on your furnace. They are typically located on the front or sides of the furnace.

Once you've found the access panels, exercise caution as there may be live wires behind them. Always turn off power to your furnace before attempting to remove any panels or work on your control panel. A guide you'll test will help you ensure that you're handling your furnace correctly and safely. With caution in mind, go ahead and remove the access panels so that you can move on to inspecting and testing your furnace's interior components for signs of failure.

3. Tape down the door switch (if needed)

Step 3 in determining whether your furnace is failing requires you to tape down the door switch, if needed. The door switch is typically held by access panels and it's what turns off the electricity running to your furnace when you open it. If the switch pops out while the furnace is running, it can cause it to shut down completely. To prevent this from happening, simply use electrical tape to hold the door switch in place.

It's important to note that not all furnaces have a door switch that needs taping down. However, if yours does, it's an easy fix that can save you time and money in the long run. By ensuring that the door switch is held firmly in place, you can avoid costly repairs or even having to replace your furnace altogether. So, take a few moments to check if your furnace has a door switch that needs taping down and do so if necessary – it could make all the difference!

4. Check the Control Board Indicator Light (if you have one)

Step 4 in checking for furnace failure is to look for the control board indicator light. This light is generally located behind the lower access panel of your furnace and can be identified by the wires running into it. Its purpose is to confirm power is flowing to the control board. If you find that the indicator light isn't working appropriately, you're in luck! You can skip right ahead to step 9 in our guide.

However, if the indicator light on your control board is working, you'll want to systematically check the power flow through your furnace using a voltage meter (step 5) to ensure everything else is functioning as it should be. Keeping an eye on your furnace and performing these checks regularly can help prevent costly repairs down the line.

Frequently Asked Questions

How to troubleshoot a blower motor?

You can troubleshoot a blower motor by checking the fuses, wiring, and relay connections. If those are fine, test the motor's voltage and resistance using a multimeter to determine if it needs replacement or repair.

What would cause the furnace blower not to turn on?

The furnace blower may not turn on due to a faulty thermostat, a tripped circuit breaker, or a malfunctioning motor. It is important to troubleshoot and address these issues promptly to ensure the safe and efficient operation of your furnace.

How to remove a blower motor in your furnace?

To remove a blower motor in your furnace, first turn off the power and disconnect any wires or connections. Then locate and remove the screws or bolts that secure it in place before carefully lifting it out of the unit.

What should I do if my Furnace isn't keeping up?

If your furnace isn't keeping up, check and replace the air filter, make sure all vents are open and unobstructed, and consider scheduling a professional maintenance check to ensure proper functioning.

Is your furnace stagnant or damp?

A stagnant furnace can cause poor air quality and potential safety hazards, while a damp furnace may indicate a leak or moisture buildup. It's important to address these issues promptly through professional maintenance or repairs to ensure efficient and safe operation of your heating system.

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Belle Gentile

Writer at Celebrity Examiner

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Belle Gentile is a passionate writer who loves to create engaging content that inspires and educates. She has always had a passion for storytelling, and her writing reflects her unique perspective on life. Belle's work covers a wide range of topics, from personal development to travel, health, and wellness.

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