How To Reset HVAC Blower Sleeper Fuse

How To Reset HVAC Blower Sleeper Fuse?

Staying at home to enjoy holidays in winter or summer can turn into a nerve-taking experience when a fused blower sleeper motor of your air conditioner isn’t in the mood to give cold or hot relaxing air, right?

And thus, a question, i.e., “how to reset HVAC blower sleeper fuse” pops up in your mind to try fixing the little annoying thing all by yourself. 

Well, the good news is it requires only a few small steps to reset your HVAC blower sleeper fuse, which has been discussed later in the article. 

However, resetting or fixing your blower fuse is not always the right step to take. Let’s dig in to find what other factors you should pre-check before resetting your blower fuse. 

Blower Sleeper Fuse: A Quick Rundown 

The blower sleeper fuse is a safety device that protects your air conditioner’s blower motor from overheating. 

It is an electromagnetic switch mounted on the blower motor and wired in series with the blower circuit. 

The main purpose of the blower sleeper fuse is to prevent the blower motor from overheating by providing a safe path for the electrical current to flow.

This fuse is located in the AC’s blower assembly, preventing the blower motor from starting up until the AC has had a chance to cool down. 

Without the blower sleeper fuse, your AC could start up with no air blowing, which could damage the motor ultimately. 

Consequently, the blower sleeper fuse will only need to be replaced if it has blown out. 

And usually, when the air conditioners stop pushing the air through vents, it causes the blower motor to overheat and, ultimately, a blown-out fuse. 

How To Reset HVAC Blower Sleeper Fuse?

How To Reset HVAC Blower Sleeper Fuse

It can be frustrating when your sleeper AC is not working, right? However, You can easily reset your HVAC blower sleeper fuse by following steps from identifying its exact location to installing a new blower fuse. 

But before explaining ways or steps to change a blower sleeper fuse, you need to identify the root cause of the problem. It might blow again if you reset the fuse without addressing the underlying issue.

Therefore, assuming that you have the right amp rating and voltage for your application and that the circuit breaker or fuse is not defective, there are a few other things to check before resetting or replacing a fuse. 

Check the following conditions:

  • There is no heavy corrosion on the terminals. 
  • The fuse is firmly attached to the clips. 
  • There is no circuit break or shortfall of power supply. 
  • Nothing is touching or resting on the exposed part of the fuse. 
  • The wire going to the load side of the fuse is not damaged.
  • Check the thermostat panel and outdoor AC unit are on or not. 

After double-checking all the mentioned possible factors that can lower the AC working potential, gather the tools to reset your blower fuse. 

Steps to Quickly Reset Your HVAC Blower Sleeper Fuse

How To Reset HVAC Blower Sleeper Fuse

Air is circulated through the vents by the blower motor in your air conditioner. If you’ve noticed that the airflow from the vents has diminished, the blower motor may have blown a fuse or relay. 

Consequently, if your HVAC blower blows only intermittently or quits completely, it’s time to check the blower sleeper fuse and reset it.

Locate Your AC Fuse

The fuse is located in the air conditioner’s control unit board, which is in the lower area of the control unit behind the AC’s access panel. To check the fuse, turn off the power to the unit and then open the AC unit to identify the location of the fuse.

Remove Access Panel 

Remove the access panel from the front of the blower unit. Locate the fuse holder near the blower motor and the fuse box, which is usually located near the furnace, and it will be labeled “HVAC.”

Identify the Fuse 

Once you have located the fuse box, open the cover and identify the fuse corresponding to the blower motor and check the fuse for any signs of damage. 

Remove and Install New Blower Fuse 

Once you have located the correct fuse, use a pair of pliers to remove the fuse from the socket. Inspect the fuse to see if it is blown, then change it with a new blower fuse of the same voltage properties. 

Reassemble the Access Panel and Control Unit 

Once you have replaced the fuse, close the cover on the fuse box, place the access panel back and turn on your furnace. The blower motor should start running normally. If it still does not work, it’s better to consult a professional for further troubleshooting.

Impacts of Stopped AC Blower 

How To Reset HVAC Blower Sleeper Fuse

When the AC blower stops working, it can have a few different impacts depending on the specific situation. 

For instance, if the blower is not working in air conditioning mode, ice can quickly form around the evaporator coil and refrigerant lines. 

This can ultimately lead to a loss of cool air and potential damage to the unit. 

In other cases, the fan may stop working, leading to less airflow and potential overheating. 

Whichever the issue, it’s important to shut off the air conditioning unit immediately to prevent further issues.

How Can You Check HVAC fuses?

Start by finding if your multimeter is working, and test it by touching both ends of the device together. 

If that doesn’t work, the AC fuse is likely the problem. To find the circuit breaker, look for connection points on the AC. 

Once you’ve found them, place your multimeter on those points. 

When electricity passes through your device, it will make a sound or display a measurement; otherwise, nothing will happen.

FAQs: Quick Answers to Your HVAC Blower Fuse Concerns 

  • How long do HVAC fuses last?

Usually, AC fuses, also called ‘time delay’ fuses, can have a lifespan of 20 years. They’re constantly active every time you turn the machine on and off until they gradually wear out from excessive usage. 

  • How do you know if the AC fuse is bad?

The first sign that your air conditioner has blown a fuse is if the outside AC unit doesn’t work. The best way to check for this is by using a voltmeter. Remember that you’ll be working with live electricity, so use caution when troubleshooting your system.

Final Thoughts

Ending the guide on “how to reset the HVAC blower sleeper fuse,” we hope you are ready to wear gloves and pick up your screwdriver to reset the fuse by yourself. 

However, make sure you follow preventive measures before touching any wire or motor. Also, get a handful of information regarding the fuse’s location, type, and power capacity before starting. 

If you find changing the blower fuse difficult, you can find licensed HVAC contractors near you and let them help you with all HVAC problems. 

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