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Blog - Air Conditioning Repair

HVAC Repair

Furnace Repair

HVAC Contractor

Why Is My Furnace Blower Not Working?

12/27/2023

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​The blower in your furnace isn't working. In terms of furnace malfunctions, this problem may be resolved without much difficulty. If fortune favors you, you might be able to complete the repair successfully on your own. We have pulled together a list of troubleshooting techniques that you may use to fix your furnace blower in order to assist you in getting your system back up and running.
Why is my blower motor is not working?
The air in your house is distributed throughout by the furnace fan. Thus, it should come as no surprise that your home would remain cold or hot if the blower in your furnace is broken.

A blower can be prevented from operating by a variety of factors. The blower motor itself is at blame for some. Some are caused by parts of the furnace that prevent the blower motor from operating.
​
I'll cover what to do in this article if the blower on your furnace won't turn on. Also, I'll go over the various components you should inspect and how to identify typical blower motor problems.

How to Diagnose and Fix Your Furnace Blower

To fix your furnace and get it operating again, follow these easy troubleshooting instructions.

Check The Wires Of Your Furnace

Verify that no fuses have blown or the power cord has melted. Try unplugging the fan for a few minutes and then plugging it back in if everything seems to be working properly with your wires. This procedure may occasionally reset the motor and fix furnace issues.
​If your fan isn't working after unplugging and plugging it, check the fuse box. It's possible that an electrical surge overloaded your system and popped the breaker. See whether any breakers have popped in your fuse box. Turn it back on if you discover one.

Verify That Your Thermostat Is Set And Operating Properly

​The thermostat on your furnace should be checked if there is power to your blower fan. The majority of thermostats arrive from the factory automatically set to "auto." However, there are situations when a manual override is required because your thermostat breaks down, ages, or is configured incorrectly.
​Three settings are typically available for thermostats: "on," "auto," and "off." Try turning the thermostat to "on" for our purposes. The fan will become permanently on as a result of this change. Although this isn't the best option in terms of power consumption, it will temporarily solve your furnace fan issues until a specialist can visit you and perform a thorough inspection and repair. Try changing the thermostat's batteries or adjusting the temperature controls to three to five degrees higher than the room's actual temperature if you turn the thermostat control to "on" and nothing happens. If none of them work, you should contact a furnace repair professional right away.

Examine The Vents And Filters

Because blower motors are meant to move air, they cannot function in the absence of air. To make sure the blower isn't having trouble operating, you should constantly inspect the filters and vents around it. Examine the markings on your air filter and look inside the housing. Verify that the arrows on the air filter are pointing in the right direction if your furnace blower isn't working. Adjust the filter's alignment if the arrows are pointing in the incorrect direction. Check the vents surrounding the blower next.
​Do you have blocked or closed vents? Moreover, your blower may be too filthy to operate. If your blower appears to be dusty, use compressed air to blast the dust away or use a cloth to wipe it away.

Inspect The Drive Belt On Your Furnace Blower.

​Turn off the furnace at your home's circuit breaker panel to determine whether the blower motor belt is damaged. After that, return to the furnace and examine the blower belt. The failure of a furnace fan to function is a sign that the belt needs to be replaced because it is broken or worn out.

Does The Motor Of Your Blower Humming?

​If the lights come on and your blower motor hums but nothing happens, your furnace's problems are most likely caused by a damaged capacitor. A lot of power is used by blower motors. After all, these are bulky technological devices. Therefore, your furnace will still require a capacitor to store and discharge the 400+ volts it needs to run, even if it is connected to a 240-volt outlet. Damage to a capacitor could be the cause of your furnace blower motor not starting. A capacitor may rupture when a load is too great, which would impair the efficiency of your furnace.
​Occasionally, the load gets excessive, causing your capacitor to self-destruct. When the hum you hear stops clicking or whining, you will know that your capacitor is failing. A malfunctioning capacitor will always produce a buzzing sound more than anything else. The high voltages required in this type of repair make it something we wouldn't advise performing yourself.

Reset The Blower

​A furnace blower motor is easy to reset. To ensure you can complete the tasks safely and accurately, let's go over each one individually.
  • Turn off the furnace power: Turning off the breaker that your furnace is connected to is the best way to tur  off the power to it.
  • Take off the blower cover: In most cases, removing a few screws from the front will allow you to remove the blower cover.
  • Allow the blower to cool down: The blower has to cool down next. This will bring any metal parts to a touch-safe temperature.
  • Locate the reset button: Usually found on the rear of the motor, the reset button is red. You must push the reset button back in if it has popped.
  • Press the reset button: Press the reset button to activate your blower's internal tiny circuit breaker, which can explode in the event of an overload. Press the red button back in if it has popped.
​It should now be possible for you to reset your blower motor. Your motor can be broken if the red button on the rear hasn't popped.

Signs That Your Furnace Blower Needs to be Replaced

​Overheating and dampness are the two most prevalent indicators that your furnace blower motor is damaged. Below, we'll go into greater detail about each.

Overheating

​The electrics and bearings in your motor will start to fail if they are subjected to excessive heat on a regular basis. A part has either cracked or a bearing has seized if you allow your motor to overheat and fail on a regular basis. Examine your vents, filters, and in-room airflow to avoid overheating.

Damage Because Of Moisture

​Humidity, a leaking ceiling, or a coil that was put improperly can all result in moisture damage. Your blower motor's control panel and motor case will start to corrode if water gets inside of it. Any moisture close to electrical components and wires might result in damage and a short. Relocating your furnace away from any pipes where moisture could potentially drop and installing a dehumidifier in your utility room are the best ways to guard against damage to the furnace blower.

Doesn't The Furnace Blower Turn On? Call A Furnace Repair Company

​A minor problem might easily grow into something far worse. Are you attempting to figure out why the blower on your furnace won't turn on? With the equipment they need, our professionals can fix or repair your Alexandria, Virginia, furnace. Our team also provides various HVAC services including installing water heaters, replacing sump pumps, fixing air conditioners, and installing water lines.
​We have the expertise and experience necessary to quickly complete a furnace repair or maintenance service in your house. Our staff is also adept in installing furnaces, so you don't need to buy a new furnace motor. Give our team of professionals a call at (571) 568-6856 if the blower on your furnace won't come on to get assistance with a broken system.
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  • Home
  • Services
    • Residential >
      • Air Conditioning Repair
      • Plumbing Repair
      • Furnace Repair
      • Heat Pump Repair
      • Tankless Water Heater
      • Heating Maintenance
      • Heating Unit Replacement
      • Emergency Heating Service
      • Indoor Air Quality Systems
      • Nest Thermostats
    • Commercial >
      • Commercial HVAC Service
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  • About Us
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    • Why Choose Us
  • Near Me
    • Alexandria, VA
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    • Arlington, VA
    • Burke, VA
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