Comfort Zone Infrared Heater Troubleshooting [7 Solutions]

Comfort Zone becomes a name for purchasing a heater to boil the frigid condition of our space. Like infrared or fan-forced, all of their heaters include safety features including overheat sensors or tip-over switches. 

comfort zone infrared heater troubleshooting guide

Having these features doesn’t mean the heater function will remain the same all year round. Like other electric appliances, Comfort Zone radiant infrared heater also gets damaged. Over time, you may encounter some issues like:

  • The heater doesn’t operate
  • Your heater keeps shutting off
  • The infrared heater will not turn on
  • The heater fan not working
  • Warming the switch and circuit breaker
  • And many other error codes

In this Comfort Zone Infrared heater troubleshooting guide, we will break down all the common issues, and the reasons behind them, and provide their solutions as we did with Vaughn water heater troubleshooting. So, start scrolling down and read this article from top to bottom. 

7 Comfort Zone Infrared Heater Troubleshooting Guide

No matter what brand your radiant infrared heater is coming from, you encounter the following issues. From this chapter, you will learn about why your comfort zone heater not working, all other heater problem reasons, and easy solutions. 

1. Heater Does Not Operate

When you find the heater isn’t running, investigate the following reasons:

  • You don’t plug the electric cord into an outlet.
  • There is no power.
  • The battery of the remote may not be good.
  • You set the thermostat lower than the room temperature.


  • Plug the unit into an outlet.
  • Make sure the outlet provides enough volts or power required.
  • If the remote battery is dead, replace them.
  • Use the control panel buttons to increase your thermostat temperature settings on your infrared heater. You can also use the remote control to do this task.

2. Heater Keeps Shutting Off

If your Comfort Zone infrared heater keeps shutting off, the following reasons are the main culprits behind this issue:

  • You may set the thermostat lower than the room temperature
  • Low airflow
  • Dirty air filters
  • A problem in the power supply
  • Internal auto safety feature


  • Set the thermostat to the higher settings
  • Clean the air filter and ensure to flow sufficient air to the heater
  • Check the electric power supply system and find out if there is any problem like damage in the outlet, power cord, and wiring. If you find any damage, fix it. Also, check the circuit breaker. If the breaker is worn out, replace it.
  • The comfort zone heater comes with an auto safety feature. If the feature finds your heater is not stable, it will turn off your heater. So, place your heater in a steady place and make sure it’s stable. Plus, the auto shut-off feature will shut off your heater if it finds the heater reaches the maximum or certain level of heat. In such a case, reset the heater before running it again.
  • Yet if the heater keeps turning off, don’t forget to read our ultimate guide on why the Comfort Zone heater keeps shutting and how to fix the issue, or contact the Comfort Zone support team.

3. Warm Cord And Circuit Breaker

Generally, it isn’t a problem at all. However, the heater cord may get warm for the following reasons.

  • Old electric cord or it gets worn out.
  • Loose connection between the plug and socket
  • Other appliances may run from the same outlet.


  • Replace the electric cord with a new one
  • Secure the connection between the plug and socket
  • Never run other electric appliances from the same outlet 
  • Replace the circuit breaker if it gets blown or tripped

4. Heater Turns On But Not Working

You check everything, and they seem fine, but your heater will not work. Here are some reasons behind it.

  • Build dust on the heating element
  • The air filter gets clogged
  • Build dirt on the fan


  • Disassemble the unit and clean the heating element
  • Clean the air filter 
  • Remove the dirt by weeping the fan with a cloth 

5. Heater Fan Not Working

When you find your Comfort Zone heater fan is not functioning, then find out the following causes:

  • The power cable is faulty or the loosen plugged in
  • The wiring is loose or damaged
  • Faulty or damaged switch in the outlet or heater switch


  • Unplug the power cord. Then plug in again tightly. Check if there is any damage or cut-up in the power cable. If yes, then change the power cable. 
  • Check if there is any loose wiring or connection in the outlet. If you find any loose or disconnected, rewire and connect the wires. 
  • Try to find out if your heater switch or outlet switch is in good condition. If you find any damage or fault, replace the switch. 

Note: Here you can read our comprehensive guide on why the Comfort Zone heater not working and how you can solve it by yourself.

6. Heater Displays Error Code “E1.”

When you find your heater display is showing an “E1” error code and your Comfort zone heater not turning on, then be sure the following reasons are responsible for the error code:

  • The infrared heater may get overheated.
  • Your unit gets insufficient power.
  • Maybe the air filter gets clogged.
  • Inadequate air may flow to your heater.


  • First off, unplug your unit or electric heater from the outlet. Then, plug the electric cord into the outlet a few seconds later.
  • Plug your unit into a dedicated 3-prong outlet without any extension cord. Of course, don’t plug other electric appliances into the same outlet. 
  • Clean the air filter often, which you can find on the back of your heater.
  • Bring your heater at least 3 feet away from the wall. 

7. Heater Displays An Error Code “E2.”

When you notice your infrared heater is displaying error code E2, then think, the temperature sensor of your heater may not be functioning properly.


  • We recommend you contact the manufacturer for technical support.

How To Reset Comfort Zone Heater

Resetting the comfort zone heater is simple. To reset, off the power switch, unplug the heater, allow it to cool for 10-15 minutes, and then plug the power cord on the heater. Your heater will get reset.

For better understanding, you can follow the following steps to reset or read our complete guide on how to reset the Comfort Zone heater and when you need to reset your heater:

  • Move the power switch to the off position. The Set TEMP light will shut off.
  • Then unplug the unit from the electric outlet.
  • Let the heater cool by leaving it for 10-15 minutes.
  • And then, plug the electric cord into an outlet and turn it to reset your Comfort Zone heater. 

Here, you can watch the video that will be helpful for you.


Why is my comfort zone infrared heater not working?

Your infrared heater is not working because you may not plug it in. Alternatively, the air filter gets clogged, or insufficient air may flow to the heater. 

Can I leave the infrared heater on all the time?

Yes, you can leave your infrared heater overnight as it is entirely safe. However, we recommend you turn off the unit when you are asleep or go outside. 

Do infrared heaters wear out?

There is no moving part in the infrared heater. So, there is no risk of wear out.

Do infrared heaters use a lot of electricity?

Yes, some infrared heaters use a lot of electricity to operate. However, you can find the label on which the manufacturer writes how much electricity it takes to run. Generally, most heaters require 1500 wattages of electricity to operate smoothly.

How long do infrared heaters last?

Infrared heaters will last around 20,000 hours.

How much does it cost to run a 1500-watt heater for 24 hours?

Generally, it depends on how many bucks you give to your local electric company per KW. For example, if you pay $0.20 per KW, apply the below formula to know the cost. The wattage of the Heater x Hours ÷ 1000 x Price. Now, let’s calculate: 1500 x 24 ÷ 1000 x $0.20= 7.2. Indeed, a 1500-watt heater will spend you $7.2 per day if you run it for 24 hours. 


You learned why the heater is malfunctioning and its solution from this Comfort Zone Infrared Heater Troubleshooting guide.  

If you can’t figure out those issues we have mentioned above and the heater doesn’t function well, contact the manufacturer’s support team. 

Well, if you have any questions about this term, leave a comment below to let us know. Well back to you ASAP.

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.

18 thoughts on “Comfort Zone Infrared Heater Troubleshooting [7 Solutions]”

  1. My Heater Is Electric Radiant Dish when I turn it on about 10 minute it shut off by itself and never come back on again, what should I do

    • Hi Suckdi

      Your heater may keep shutting off for the following reasons:

      1. You may set the thermostat lower than the room temperature
      2. Low airflow
      3. Dirty air filters
      4. Problem with the power supply
      5. Internal auto safety feature

      Investigate all and fix. You can read the troubleshoot 5 from our guide. hope, you will get the solution.


  2. I bought a CZ220 5,000 watt from Amazon. Hooked it up, verified 240 to the lugs, 30 amp breaker at the box. Power light comes on, turn the knob and nothing. Use switch settings I, II, III and cycle the knob, nothing. I hear a click each time knob moves from the OFF position but nothing beyond that.
    I can see power at the switch but nothing when the switch is moved from OFF position.
    Anyone have an idea?

    • Hi Jennifer

      Your heater keeps shutting off due to low airflow or dirty air filter. Plus, you may set the thermostat lower than the room temperature. The problem in the power supply and internal auto safety feature can be the reasons. Check all these issues and fix them. First, try cleaning the air filteR and ensure enough airflow. Then go for the est issues. Hopefully, you will get the solution.


  3. Hi,

    My Comfort Zone Quartz Tower Heater has started to make a burning smell when it’s in use. I’ve had it for about 4/5 months and have been using it pretty steadily to heat my bedroom. The smell is new.. never did it before. I have stopped using it for fear that it’s become a fire hazard.

    Any thoughts? Thank you.

    • Hi Missy

      It could be due to an electrical problem or if the space heater is faulty itself. Make sure that the space heater itself is not melting or any plastic is melting inside it. Also, ensure you are not using an extension cord. Plus, such a smell is usually the result of accumulated dust on burners, air ducts, or other furnace parts. So, first, clean the heater and find if the smell is still. If you still smell, it would be wise to contact a technician.


  4. I have an old, small Comfort Zone personal heater, maybe 12 years or so old; I don’t know if its an infrared heater. It has 2 knobs, one for temp control and the other with off, fan, low and high. It was working great until I moved it to another location in my condo and then this morning moved it back to where I usually have it. Turns on great but no heat. I took off the back and dropped it while unscrewing it. Didn’t see anything unconnected. Put it back together and it turns on but no fan. The heater coil turns red, I don’t remember that being red before I took it apart but I wasn’t paying attention. Do you think dropping the heater broke the fan? One of the screws is missing. Would not having one of the screws cause the fan to not work? I’m not mechanically minded….

  5. Roseanne here again. I took it apart again, put it back together and now the fan works but no red coil and no heat. Maybe it’s time to replace. This has been a great fan tho. Model CZ40 if that helps.

    • Hi Roseanne

      First, make sure the unit is plugged in that is free of damage. Plus, check the circuit breaker and electrical socket and ensure they are working properly. Also, check the air filters and clean them if you get them clogged. Clogged filters or insufficient airflow to the heater could be the reason for your heater not working.

      If it doesn’t work, take help from a technician.


  6. My Comfort Furnace Infrared Heater 1500 will run well for a while, then we’ll go in the room and the temperature is 84 degrees when the setting is on 72 degrees. Can anyone explain how this can occur?

    • Hi Jerry

      It is an overheating issue. This type of problem generally happens due to a dusty air filter that blocks the airflow. Consequently, heat accumulates inside the unit and ultimately shuts down the unit.

      To solve the issue do the followings-
      1. First off, unplug your unit or electric heater from the outlet. Then, plug the electric cord into the outlet a few seconds later.
      2. Clean the air filter often, which you can find on the back of your heater.
      3. Bring your heater at least 3 feet away from the wall.

      Hopefully, your issue will be solved.


  7. I installed a 7500 watt electric comfort zone heater. The digital thermostat is set at 60degrees and shows a temperature of 61degrees. I put a thermometer in the garage and it shows 42 degrees. No matter where I set the temperature it maintains a 20 degree difference between the inside of the garage and the digital display on the heater. What can I do?

    Thank you

    • Hi Tim

      Check the filter which could be the culprit behind the issue. In fact, a clogged filter restricts the airflow & consequently, your heater can’t push the warm air out.

      Well, to fix the issue, replace the filter.

      Hopefully, your problem will be solved.

      Wish you all the best!

  8. MyCZ1500Comfort Zone heater displays AO5 when turned on and continues to cycle the AO5 code about every 3 seconds without ever turning on. Any advice?

    • Hi Bud

      First, thoroughly clean your heater to fix the issue as AO5 is an overheating error.

      If it doesn’t work, contact the Comfort Zone customer support center.

      Best of luck!


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