Sunbeam Quartz Heater Keeps Shutting Off [9 Easy Solutions]

Your Sunbeam quartz heater keeps shutting off due to improper maintenance, problematic thermostat positioning, faulty electrical cords, and improper airflow.

Plus, wrong positioning of the heater, faulty overheat sensor, damaged control board, inconsistent supply of electricity, and damaged power button are also responsible for your sunbeam heater not working.

We will give you easy solutions to each of these problems. In addition to this, you will get a better understanding of your quartz heaters’ function. So, let’s start right now…

How Does Quartz Heater Works

Quartz heater basically works with infrared waves. You feel the heat when the waves strike you. Why? Because the infrared is partially heat energy. However, the quartz crystals are not the primary heating element of the Sunbeam heater. What happens here is the quartz tube encloses the heating elements to protect it from external damages and reduce heat loss.

Moreover, this quartz tube also makes the infrared waves more efficient. A notable thing here is that, unlike traditional heater, infrared heater doesn’t heat the air. Rather it directly affects the objects and bodies that receive the wave. Mainly, for this reason, it is said that a quartz heater assures 100% warmth of the body despite the location.

As the heat of a quartz heater doesn’t depend on the air, it is perfect for use in large areas such as warehouses, workshops, and patios. And it is a very safe device to use as well. The thermostat helps to maintain the amount of generated heat. The overheat sensor keeps the heater within a safe temperature range.

In addition, the tilt sensor shuts the heater off in vulnerable situations. So basically, a quartz heater provides utmost efficiency with proper safety. The Sunbeam quartz heater is no different. 

Sunbeam Quartz Heater Keeps Shutting Off [9 Easy Solutions]

Knowing how the Sunbeam quartz heater works can help you deal with its issues. If your quartz heater keeps shutting off, then keep on reading. The elaboration of the reasons and solutions below will definitely help you fix your sunbeam heater keeps shutting off.

1. Improper Maintenance

There are a few things you should be aware of while using your Sunbeam quartz heater. If you don’t practice these safety measures, your heater can have the issue of constant shut-off.


Here are the few things you should be careful about,

  • Never leave your heater plugged in while the covers are off
  • Don’t place the heater on, above, or inside any other electrical device
  • Keep sharp and flammable objects away from the device

Maintaining these simple things will keep your heater in perfect condition.

2. Problematic Thermostat Positioning

If the thermostat of your Sunbeam quartz heater is not set at the right level, the heater can shut off while functioning. 


To solve this issue, you just have to set the thermostat at the appropriate level. Setting the thermostat level is easy. Just use the dial and set it to a higher setting of 2 or 3. This will prevent your device from shutting off.

3. Faulty Electrical Cords

Sunbeam quartz heater runs on electricity. If the supply of electricity is hampered in any way, the heater will shut off and thus the heater won’t start finally.


You must closely examine the electrical cords and make sure that they are properly working. If you notice any damage, you should change the wires before turning on the device again. However, don’t try to cut the cords and install them from the middle. This can bring more damage. So just replace the complete cord. Call an electrician to perform the cording properly.

4. Improper Airflow

The Sunbeam quartz heater needs airflow inside the system to keep it cool while working. If the device doesn’t receive any airflow inside, it will overheat with time.

As we have previously discussed, there is an overheat-sensor built-in in this heater. This sensor will shut off the whole device. It will keep happening every time you turn the device on. So basically, the lack of airflow will turn off your heater. And the main culprit behind this issue is the obstructions stuck in the vents. 


To solve this issue, you have to clean the air vent of the heater. Here’s how:

  • Wipe the outer part of the air vent with a soft-fabric
  • Use a can of compressed air to remove the dust from the air-vent path
  • Unscrew the back panel of the heater if something bigger is stuck in the air vent
  • Clean out all the obstruction
  • Put everything back to their place

Now once the air-vent of the heater is perfectly clean, it should not prevent the airflow anymore. It means your heater will not shut off on its own.

5. Wrong Positioning Of The Heater

Just like overheat-sensor, there is a tilt-sensor that shuts off the device if it senses any form of leaning. This is why if the heater is not perfectly positioned, it can shut off on its own.


You can handle this situation just by perfectly positioning the heater. Just place your device on flat ground and make sure it is sitting upright on its stand. If the tilt-sensor was the issue, your heater shouldn’t shut off again.

6. Faulty Overheat Sensor

As we have already seen earlier, the overheating sensor shuts off the heater the moment it detects excessive heat. However, the sensor can shut off the device even if the heat level is perfectly fine. This can happen if the sensor is somehow broken.


What you have to do in this case is replace the overheat sensor of the quartz heater. Here’s how you can do it:

  • Turn off the heater
  • Open up the heater to expose the control panel
  • Locate the overheat sensor there
  • Pull out the sensor from its place
  • Install a new sensor (consult Sunbeam for the appropriate sensor for your model)
  • Put everything back on

Now when you turn your heater on, it should work just fine without shutting off.

7. Damaged Control Board

As you already know, the Sunbeam quartz heater runs on electricity. If there is an excessive current flow, it will blow up the fuse. So if your quartz heater keeps shutting off, check the control board and see if the fuse is blown.


In case you find that the blown fuse is the issue, you have to replace it with a new one. It is as easy as it sounds. Just open up the control panel, pull out the fuse from its place, and then set a new one there. Once you successfully install a new fuse in your heater control board, it should run without shutting off. 

8. Inconsistent Supply Of Electricity

Your Sunbeam quartz heater will run as long as it has an electricity supply. The moment the electricity supply cuts off, the heater system shuts off as well. So if your heater is in perfect condition, but it still keeps shutting off, examine the electricity supply. 


Well, you need to call an electrician for this. They will identify the issue and fix it. Once the power supply is fixed, your quartz heater should run non-stop.

9. Power Button Is Damaged

Your Sunbeam quartz heater should shut off only when the power button is pressed down. However, with time, the power button can get loose and get stuck in its place. As a result, your heater’s power button will always remain pressed, and the heater will keep shutting off.


What you can do in this case is simply open up the control panel and replace the spring under the button. In most cases, adjusting the springs’ position works as well. If you can maintain these safety points, you will not have further difficulty with the quartz heater shutting off.

How To Take Care Of Your Sunbeam Quartz Heater

Though you can easily solve the issue of the Sunbeam quartz heater keep shutting off, it can be very harmful to your device. If you fix the problem once and leave it to run at its own course, the problem will return.

However, you can prevent this type of issue all the way just by handling the heater in the appropriate manner. Here’s how to take care of the Sunbeam quartz heater:

  • Always unplug the device after using it.
  • See if the cords are in perfect condition every time you plug it in.
  • Clean the heater regularly with a microfiber cloth.
  • Use compressed air to clean the dirty heat sensor and control board inside of the heater cover.
  • Once the heater turns cool, wipe it gently with a microfiber cloth.
  • Avoid using your device during frequent power outages
  • Contact a professional if you notice unusual behaviour in your quartz heater.

If you can regularly maintain these simple points, your Sunbeam quartz heater will keep warming you for decades.


How do I reset my Sunbeam heater?

To reset the Sunbeam heater, you have to unplug the device’s power cord and wait for around half an hour before plugging it back in.

What to do if my Sunbeam heated blanket not working?

If your Sunbeam heater blanket not working, then unplug the device first, make sure there is a consistent supply of electricity flowing in the heater, and plug it back on. This should fix the issue.

How long do quartz heaters last?

A good quartz heater should last for around 20,000 to 60,000 hours.

Can you leave a Sunbeam quartz heater on all night?

Well, it’s not very safe to keep a Sunbeam quartz heater on all night.

Do Sunbeam quartz heaters use a lot of electricity?

Sunbeam quartz heater uses around 750 watts of electricity on average. This amount is quite good for a heating device. 

Final Words:

Purchasing a Sunbeam quartz heater is anything but a mistake. Its magnificent performance will never fail to satisfy you. However, certain issues can affect the device. But if your Sunbeam quartz heater keeps shutting off, you can fix it easily by following what we have discussed in this article.

And in case you run into any trouble, you can let us know in the comment below.

About William

William is the founder of He has real life practical skills in fixing smoker & heating appliance issues. He loves to share his knowledge & helps others in fixing their appliances & saving their money. William firmly believes that anyone can repair his or her unit with the correct guidance & knowledge. See more at about us.

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