A sleeper fuse is an important electrical component whose task is to prevent the HVAC blower from surges of electrical voltage. This fuse burns itself to save the other electrical components from malfunctioning. Then, how to reset HVAC blower sleeper fuse once it is damaged.

We will compile the whole process of resetting the HVAC blower sleeper fuse with its proper description.

How to reset HVAC blower sleeper fuse?

In the case of resetting the HVAC sleeper fuse, you need to take the following steps in a specified order that we will discuss now.

Trace the AC Fuse to reset HAVC blower sleeper fuse:

First of all, you should find out the place of the AC fuse in the HVAC blower mechanism. So, for this purpose, switch off the main power source of the unit AC, and open the unit. Usually, this fuse is situated inside the control unit board of the AC. This control unit lies on the lower side of the access panel.

Take out the Access Panel to reset HAVC blower sleeper fuse:

Now, for resetting the fuse, you have to take out the access panel of the Air conditioner. Here you can see a fuse box and fuse holder beside the motor of the blower. This fuse box and holder are positioned beside the furnace of the AC.

Observe the Fuse to reset HAVC blower sleeper fuse:

After finding the position of the fuse box, open this box and look for the sleeper fuse in it. Now, check this fuse whether is damaged or not. Because, if you are looking for how to reset HVAC blower sleeper fuse, first check whether it is even faulty or not.

Take out the faulty fuse and place a new one:

If you noticed that the fuse is damaged and is not capable of further use, take this fuse out. While removing it take the necessary precautionary measures like the use of pliers and safety gloves. With the help of a plier, take out the old fuse and replace it with a new fuse. One thing to note here is that the new fuse should have a better capacity to withhold the surges of voltages.

Reassemble the open parts of the AC:

After successfully placing the new fuse, close the fuse box firmly. After that put the access panel in place and close its cover. Now, you can switch on your furnace. Use the tools like pliers and screwdrivers for closing the various part of this AC panel.

Switch on the AC to check whether it is working properly now:

Finally, you can now switch on the AC after properly closing down its all parts. Carefully check whether the AC is working in excellent condition or not. If it is working, then you have successfully installed the fuse, and your trouble is gone.

However, if the AC is still not working properly, then you should contact a professional engineer to determine any further issues with the motor or blower of the AC.

What is actually an HVAC Sleeper Fuse?

The HVAC blower sleeper fuse plays a crucial role in the heating, ventilation, and air conditioning (HVAC) system. Its primary function is to safeguard the blower motor against electrical harm.

By acting as a safety mechanism, it effectively disconnects the power supply to the blower motor whenever there is an electrical overload or short circuit. This protective measure prevents any further damage and guarantees the secure operation of the HVAC system. But you may face problems with how to reset HVAC blower sleeper fuse.

Working of Sleeper fuse:

Let us discuss how this sleeper fuse operates. Basically, it works by breaking the electrical circuit that supplies power to the blower motor within the HVAC system. Its design specifically aims to protect the blower motor from any potential harm caused by excessive current, voltage surges, or short circuits.

When an abnormal amount of current flows through this fuse, it starts heating until it melts itself and breaks the circuit path. As a result, this melting process severs the connection and cuts off power to the blower motor. In doing so, it prevents any additional electrical damage and makes sure that the HVAC system remains safe and operational.

How can you point out that your Fuse is damaged?

Let us discuss these few signs that can help you to point out the damaged sleeper fuse.

• Blower Motor stops working:

If you notice that the blower motor in your HVAC system stops working completely, then it is probably due to the faulty fuse. High voltage surges may have blown the fuse.

• No Airflow from the Blower:

When the blower motor is not working accordingly, you will feel very low or no airflow coming from the vents in your home. So, this is another possibility for a faulty or completely damaged sleeper fuse.

• Blown Fuse Indicator:

 Some HVAC systems, there are indicators on the control panel that signal you when a fuse has blown. So, you can check if there is an indicator light or message showing a blown fuse. If yes, you should know how to reset HVAC blower sleeper fuse on your own.

• Electrical Issues:

If you note that there are other electrical problems in your HVAC system for example flickering lights or tripped circuit breakers, a faulty fuse can be a reason for it.

In any of these cases, you have to change or reset your fuse so that AC can start working efficiently. If you can do it on your own, it is good. Calling a professional is always the safest option to go with.

FAQs

How do I reset my HVAC blower?

For resetting the HVAC blower, locate its button inside the blower compartment. Usually, this button is present beside the furnace of the blower. Press this button for almost 30 seconds and then leave it. Now, you need to wait for 30 seconds to reset the HVAC blower.

Is there a fuse that controls the blower motor?

Yes, fuses generally control the power supply to the blower motor of the Vehicle. However, you should keep in mind that only the sleeper fuse is not responsible for controlling power surges, another fuse under the hood is present that also controls the flow of current into the blower motor circuit. This blower motor is usually placed under the dashboard of the passenger seat of the vehicle.

How can you tell if a fan fuse is blown?

After locating the fuse inside the fuse box, use a plier to take out the fuse from that box. You may need a screwdriver to open the fuse holder. Now, hold this fuse and look for a gap in a thin wire inside the fuse. You can observe it from the outside because the casing of the fuse is glass. If you notice a gap or black or brown haze inside the glass material, it means that the fuse is faulty and you can’t further use it.

Which fuse is for the blower fan?

The rating and type of fuse depend on the use of power and voltage by the vehicle. Usually, the current rating of these fuses lies between 20 Ampere to 35 Ampere. It means that these fuses can withstand surges of current to 20 to 35 Amperes. As the current crosses the limit, the fuse will burn itself to protect the blower motor.

Bottom Line:

We have discussed a step-by-step process on how to reset HVAC blower sleeper fuse after thorough research. You can definitely rely on this information. Moreover, we discussed what this HVAC sleeper fuse is and how it protects the appliances and motors attach to it from electrical power surges.