Honeywell 360 Surround Heater Not Working

Why Is My Honeywell 360 Surround Heater Not Working?

This guide on Honeywell 360 Surround Heater Not Working will reveal all the culprits that prevent the unit from heating properly.  

Plus, I will walk you through troubleshooting steps as well to bring the heater into working conditions. So, let’s dive in. 

Table of Contents

Honeywell 360 Surround Heater Not Working [5 Reasons & Solutions]

Honeywell 360 Surround Heater doesn’t work if the safety features get activated. Besides, obstructions in the heater, broken or wiring issues, or if the unit reached its desired setting will cause the unit to not work properly. 

Below, I will break down each of the issues and provide their solution as well.    

1. One of The Safety Features Get Activated

If your Honeywell 360 Surround doesn’t work or it goes shut off unexpectedly, I bet one of its safety features gets activated. This unit is equipped with several safety features, including: 

360° SafetyTIP™ is a tip-over switch. If the unit falls over or tips over accidentally, this switch turns off the unit automatically. 

Turns out, this unit has a high temperature safety control to prevent overheating. The heater is also equipped with a thermal cut-off fuse that will cut off electric supply to the unit if the heater is operating at a higher than normal temperature.  

How To Fix: 

I recommend you place the heater on a firm, solid, and open surface. Never keep the heater on an unstable surface that will cause the tip-over switch to get activated. 

Next, don’t operate the unit at the highest setting every time. To prevent the unit from overheating, make sure the exhaust openings or the filter is free from obstructions. 

2. You May Have Reached The Desired Heat Setting

The unit will simply go to the shut off position once the heater has reached your desired temperature setting. You can easily fix this issue by adjusting the Thermostat Control setting. 

How To Fix: 

To adjust the Thermostat Control Setting, what you need to do: 

  1. Plug the heater into an electric outlet and set the Power knob to High. 
  1. Turn the Thermostat Control fully clockwise to the Highest setting. 
  1. Once the room reaches a comfortable temperature, slowly rotate the Thermostat Control counterclockwise until the heating element goes to the off position. This is the point at the Thermostat Setting equals your room temperature. And this setting will automatically turn on and off your heater to maintain the selected temperature. 

3. Obstructions In The Heater

Foreign objects or blockage in the exhaust opening or air filters can cause the heater to not work. In the worst case, it may even damage the internal parts of your Honeywell 360 Surround Heater. 

How To Fix: 

Turn off the heater and unplug the unit from the power source. Next, leave the unit for 15 minutes to let it cool down.

Then, check the air filter or exhaust opening for blockage. If you find any obstructions, remove them by vacuuming up the filter. After that, re-plug the heater and turn it on according to the operational manual. 

I recommend you read this article on Honeywell 360 Surround Heater Manual to learn how to turn on the unit properly. 

4. Wiring Issues

A loose wire connection between components can also cause your Honeywell 360 Heater to work improperly. 

How To Fix: 

Unplug your space heater from the outlet and let it cool down by leaving it for at least 10 minutes. Then, disassemble your space heater and follow the wire around between components to find out the loose connections. 

However, you can hire a professional technician to fix the problem if you are not electrically inclined. 

5. Circuit Board Goes Bad

A defective circuit board is another culprit behind a non-functional heater. I highly recommend you to replace your heater with a new one if the circuit board is at fault. 


Throughout this guideline, I mentioned all the culprits that stop your Honeywell 360 Heater from working. What you need to do is- just follow the troubleshooting steps and bring the unit into working conditions. 

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