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Rechargeable

Product Guides & Videos

Video Guides

How to Use Your E-ZoneGuard Patio 5.5Hr Rechargeable Mosquito Repeller (E55)

How to Use Your E-ZoneGuard Adventure Rechargeable Mosquito Repeller (EX55/EX90)

How to Use Your E-ZoneGuard Glow Rechargeable Mosquito Repeller (EL55)

How to Use Your E-ZoneGuard Patio Mosquito Repeller (E65/E95)

E65 Series product guide

You can find the product guide here

E95 Series product guide

You can find the product guide here

E Series product guide (E55 & E90)

You can find the product guide here.

EL55 Series product guide

You can find the product guide here.

Radius product guide

You can find the product guide here.

E-ZoneGuard Adventure Rechargeable Repeller EX Series Product Guide

Click here for the product guide.

E-ZoneGuard Glow Rechargeable Repeller EL55 Product Guide

Click here for the product guide.

E-ZoneGuard Patio Rechargeable Repeller E55 or E90 Product Guide

Click here for the product guide.

Getting Started

How do I charge my E-ZoneGuard Rechargeable Repeller?

When charging your E-Series/EX-Series/EL-Series use any 1-amp supply. Examples of charging options:

  • Plug your Rechargeable Repeller into any USB wall outlet that provides a minimum of 1-amp or 5 watts & plug your Rechargeable Repeller USB cord into your computer.
  • Plug your Rechargeable Repeller into any 1-amp charging block minimum.
  • Plug your Rechargeable Repeller into any power bank of 1-amp minimum

Where is the best place to put my repeller?

Thermacell Mosquito Repellent product works well in outdoor areas where there is minimal air movement, such as decks, yards, and campsites. For best coverage in still air, place the unit close to the ground. This allows repellent to spread over a maximum area. Thermacell products are not intended for indoor use.

What makes the E-ZoneGuard Adventure Series different from the E-ZoneGuard Patio Series?

 

Both the the E-ZoneGuard Adventure Series (EX55, EX90) and E-ZoneGuard Patio Series (E55, EL55, E65, E90, E95) are rechargeable, battery-powered mosquito repellers that provide highly effective mosquito protection. While they share the same core repellent technology, each series offers unique features designed for different lifestyles and use cases.

E-ZoneGuard Patio Adventure Series (EX55, EX90)

Designed for outdoor adventures and portability, the Adventure Series includes:

  • Rubber-armored protection for enhanced impact resistance and durability.
  • A locking top to help secure the repellent refill.
  • An integrated lanyard and carabiner for convenient carrying and transport.
  • A refill-level viewing window on the back of the repeller, making it easy to monitor remaining refill life.

E-ZoneGuard Patio Series (E55, EL55, E65, E90, E95)

Designed for home and patio use, the Patio Series includes:

  • Fast-charging dock capability on the E65 and E95 models, providing a full charge in as little as 2 hours.
  • A built-in glow light feature on the EL55, adding ambient lighting for evening use.

 

What is the shelf life of E-ZoneGuard Rechargeable Repellent Refill ?

The E-ZoneGuard Rechargeable repellent refill cartridge has a shelf life of approximately 3–4 years when kept sealed in its original packaging. After this period, the effectiveness of the repellent active ingredient may gradually begin to decline. We hope this information helps answer your question.
 

E-ZoneGuard Adventure Rechargeable Repeller EX Series Product Guide

Click here for the product guide.

E-ZoneGuard Glow Rechargeable Repeller EL55 Product Guide

Click here for the product guide.

E-ZoneGuard Patio Rechargeable Repeller E55 or E90 Product Guide

Click here for the product guide.

Fuel-ZoneGuard Base Guide

You can find the guide here.

Fuel-ZonGuard Cartridge Refill Product Guide

You can find the guide here.

What type of refills are compatible with my Fuel-ZoneGuard Backpacker Repeller?

Backpacker has its own refills that are labeled Fuel-ZoneGuard Backpacker Refills Only. Package Includes twelve 4-hour mats.  Click here to shop these refills on our site. Thermacell Repellent Mats are designed to be compatible with all Thermacell fuel and mat products. 

Fuel-ZoneGuard Backpacker Repeller Guide

Click here for the product guide.

Fuel-ZoneGuard Backpacker Mats Refill Guide

Click here for the Backpacker Mats Refill guide.

What type of refill is compatible with my repeller?

 

There are three categories of repellent refills, each designed for specific Thermacell systems:

  • Fuel-ZoneGuard (Fuel-Powered) Repellers: All Fuel-ZoneGuard™ Repellers are compatible with Fuel-ZoneGuard Mosquito Repellent Refills, Fuel-ZoneGuard Max Life Refills, and Fuel-ZoneGuard Multi-Insect Mosquito Repellent Refills. If needed, you can also purchase Fuel-ZoneGuard Butane Cartridges separately without repellent mats.
    • Fuel-ZoneGuard Backpacker Repeller: The Fuel-ZoneGaurd Backpacker Repeller uses its own dedicated refills, labeled Fuel-ZoneGuard Backpacker Refills.
  • E-ZoneGuard (Rechargeable) Repellers: All E-ZoneGuard™ Rechargeable Repellers are compatible with E-ZoneGuard Rechargeable Mosquito Repellent Refills.
  • LIV On-Demand System: The LIV On-Demand System is only compatible with LIV On-Demand Repellent Refills.

To ensure optimal performance and protection, always use the refill type specifically designed for your repeller model.

Ingredients & Safety

Where can I find Safety Data Sheets for Thermacell products.

We are happy to provide the SDS sheets for your Thermacell. Please note that these sheets are for essential occupational exposure. OSHAs Globally Harmonized Guidelines (GHS) are followed for the preparation of the SDS and address large scale and repeated exposures that may be encountered when manufacturing, moving, and storing bulk quantities. Please reach out to our consumer services for Safety Data Sheets. Please reach out to Contact Us for the SDS sheets.

Are The E-ZoneGuard Rechargeable Repellers considered toxic?

The Thermacell product is designed to affect mosquitoes within the protected area it creates. While the active ingredient is effective against mosquitoes in that zone, extensive scientific research and regulatory reviews have shown that, when used as directed, Thermacell products do not pose a concern for people or pets.

Thermacell's safety data has been thoroughly evaluated and approved by the U.S. Environmental Protection Agency (EPA) as well as multiple regulatory agencies around the world as part of the product registration process.

As with any pest-control product, it is important to always use Thermacell products according to the label instructions.

Can I Use E-ZoneGuard Rechargeable Repellers Near Water or a Fish Pond?

The US EPA and WHO have concluded that there is reasonable certainty that no harm will result to the environment from use of the product. We will be approaching the EPA with additional data, which we hope will allow us to be clearer going forward about the products safety around water. In the meantime, we must recommend as best practice to run battery powered Thermacell repellers 10 feet away from a body of water and 7.5 feet away if you are using the Multi Insect repellent. Thermacell products should not be applied to water per label instructions. Thank you

Do you use chemicals in the E-ZoneGuard Rechargeable Repeller

The chemical in the E-ZoneGuard Rechargeable Repeller repellent is Metofluthrin 

Are The Active Ingredients in the E-ZoneGuard Rechargeable Repellers safe?

All of our formulations and active ingredients have been evaluated for potential human, animal, and environmental exposure scenarios. Data supporting these evaluations has been thoroughly reviewed and accepted by the US EPA and multiple regulatory agencies around the world. As such, they are approved for use when used as directed.

What are the active ingredients in the E-ZoneGuard Rechargeable repellers?

Our E-ZoneGuard Rechargeable platform repellent cartridges use metofluthrin as the repellent active ingredient. The inactive ingredients in the product are isoparaffinic solvents used to dissolve and act as carriers for our repellent.

How do you dispose of E-ZoneGuard Rechargeable repellers?

If your E-ZoneGuard Rechargeable repeller is empty of repellent, dispose in the trash according to label directions. If your rechargeable device is partially filled, contact your local solid waste agency for disposal instruction. Never place unused refills down any indoor or outdoor drain.

Do Fuel-ZoneGuard Repellers Kill Mosquitos?

When used as directed, Thermacell products are designed to repel mosquitoes, not kill them. However, if a mosquito remains within a confined, enclosed area containing Thermacell repellent for an extended period, it may eventually die from prolonged exposure.

Thermacell products are rigorously tested in real-world conditions against dense mosquito populations and have been proven effective against multiple mosquito species, including those most likely to bite and bother people. The effectiveness of our products is supported by extensive efficacy studies, which are reviewed by the U.S. Environmental Protection Agency (EPA) and regulatory agencies around the world as part of the product registration and approval process.

How effective are Fuel-ZoneGuard Repellers against other insects?

The Fuel-ZoneGuard™ Multi-Insect Refill (prallethrin mat) has demonstrated effectiveness against black flies, biting gnats, and no-see-ums.

For the Fuel-ZoneGuard Allethrin Repellent Platform, Thermacell has submitted efficacy data to the U.S. Environmental Protection Agency (EPA) to support protection claims against black flies and no-see-ums. These claims are currently under EPA review, and until approval is received, Thermacell cannot officially advertise or market protection against these insects for products on the Allethrin platform.

Thermacell products have also been tested against several mosquito species, including the yellow fever mosquito (Aedes aegypti) and the Asian tiger mosquito (Aedes albopictus), and have demonstrated strong effectiveness against both. When used as directed, Thermacell products provide reliable mosquito protection during both daytime and nighttime hours.

Safety Data Sheets for Fuel-ZoneGuard Products

We are happy to provide the SDS sheets for your Thermacell. Please note that these sheets are for essential occupational exposure. OSHAs Globally Harmonized Guidelines (GHS) are followed for the preparation of the SDS and address large scale and repeated exposures that may be encountered when manufacturing, moving, and storing bulk quantities. Please reach out to our consumer services for Safety Data Sheets by filling out this form.

How it works & performance

How does mosquito repellent work?

Mosquito repellents work by blocking or disrupting the cues mosquitoes use to find people. Topical repellents mask scent signals on the skin. Spatial repellents like Thermacell disperse a pyrethroid vapor into the surrounding air, making the zone uncomfortable for mosquitoes to enter or remain in.

Does the E-ZoneGuard Rechargeable Repeller kill mosquitoes?

 

The Thermacell E-ZoneGuard  Repeller is designed to repel mosquitoes, not kill them. The device creates a zone of protection that helps keep mosquitoes away.  In a confined or enclosed spaces with no airflow, mosquitoes are exposed to higher concentrations of repellent for an extended period may become incapacitated or die. The primary purpose of the product, though, is to repel mosquitoes and prevent them from entering the protected area.

How do I charge my E-ZoneGuard Rechargeable Repeller?

When charging your E-Series/EX-Series/EL-Series use any 1-amp supply. Examples of charging options:

  • Plug your Rechargeable Repeller into any USB wall outlet that provides a minimum of 1-amp or 5 watts & plug your Rechargeable Repeller USB cord into your computer.
  • Plug your Rechargeable Repeller into any 1-amp charging block minimum.
  • Plug your Rechargeable Repeller into any power bank of 1-amp minimum

Where is the best place to put my repeller?

Thermacell Mosquito Repellent product works well in outdoor areas where there is minimal air movement, such as decks, yards, and campsites. For best coverage in still air, place the unit close to the ground. This allows repellent to spread over a maximum area. Thermacell products are not intended for indoor use.

What is the difference Between Fuel-ZoneGuard Repellers and E-ZoneGuard Rechargeable Repellers?

 

Our E-ZoneGuard Rechargeable repellers are powered by a built-in rechargeable lithium-ion battery and use a liquid repellent cartridge. This is different from our Fuel-ZoneGuard fuel repellers, which operate using fuel cartridges and repellent mats.

When purchasing refills, it is important to order the correct refill type for your device:

  • Battery-powered (rechargeable) repellers use E-ZoneGuard Patio Rechargeable Mosquito Repellent Refills.
  • Fuel-powered repellers use Fuel-ZoneGuard Mosquito Repellent Refills, which include both fuel cartridges and repellent mats.

To ensure optimal performance, always verify that you are purchasing the refill type designed for your specific repeller model.

Can you leave your E-ZoneGuard Rechargeable Repellers outside?

 

 
The Thermacell E-ZoneGuard Rechargeable Battery-Powered Repeller is designed to be durable and withstand typical outdoor conditions. However, like most electronic devices, we do not recommend leaving it outdoors during rain or other severe weather conditions. For optimal performance and longevity, it is best to bring the device indoors when not in use or when inclement weather is expected. This helps protect the repeller and ensures it continues to operate effectively.

What Protection Zone does the Radius provide?

For the Radius, maximum repellency performance occurs within 10 feet around the device (110 sq ft). Repellency may extend beyond this range, but the level of protection will decline as you go further from the device.

What is the E-ZoneGuard Rechargeable Repeller protection zone?

The E-ZoneGuard Rechargaeable Repeller provides a 20 ft zone of protection against mosquitoes.  It will begin creating a zone of protection around the device within minutes, but to experience optimal results in the full zone, the repeller should be allowed to run for at least 15 minutes. 

What is the battery runtime and recharge time for E-ZoneGuard Rechargeable Repellers?

Battery runtime and charging time vary by repeller model. Examples include:

  • E55 / EX55 – Up to 5.5 hours of runtime; approximately 5.5 hours to fully charge.
  • EL55 – Up to 9 hours of runtime without the light, or 5.5 hours with the light on; approximately 9 hours to fully charge.
  • E90 / EX90 – Up to 9 hours of runtime; approximately 9 hours to fully charge.
  • E65 – Up to 6.5 hours of runtime; approximately 2 hours to fully charge.
  • E95X – Up to 13 hours of runtime; approximately 2 hours to fully charge.

Actual battery performance may vary based on weather and operating conditions.

 

What is the shelf life of E-ZoneGuard Rechargeable Repellent Refill ?

The E-ZoneGuard Rechargeable repellent refill cartridge has a shelf life of approximately 3–4 years when kept sealed in its original packaging. After this period, the effectiveness of the repellent active ingredient may gradually begin to decline. We hope this information helps answer your question.
 

What is the charging specs for Radius

The Radius battery has a capacity of 3250 mAH, or a rating of 12.35 watt hours. It can absolutely be charged with a portable power bank or solar charger. When using alternate charging, never use a source providing more than 5V(rare). We recommend using a minimum 1A output to charge. Charging current less than 500mA may not work. I hope this helps answer your question.

Fuel-ZoneGuard Base Repeller formly known as (Patio Shield) Missing Cap

The cover for the FuelZoneGaurd Base Repeller formly known as (Patio Shield) was designed as a decorative "cap" to put on the top of the device when not in use. It is not required for the repeller to function. We stopped producing these caps some time ago when we learned that the caps were causing confusion and users were running their repellers with the cap on. The cap can also trap debris in the device as well. These lead to negative experiences with the product, so we chose to remove the cap going forward. We're sorry for any confusion this may have caused, and recognize that due to the timing of the change, some of our packaging may have continued to show a cap.

How Do The Fuel-ZoneGuard Repellent Mats work, and can I reuse them?

You can use Fuel-ZoneGuard Repellent Mats for less than the full 4-hour duration and still maintain their effectiveness during future use. If you plan to reuse a partially used mat after a significant period of time, such as several days or longer, we recommend storing it in its original foil packaging or in a sealed plastic bag between uses. This will help preserve the active ingredient and ensure optimal performance the next time you use it.

How do I charge my rechargeable repeller while traveling internationally?

To charge internationally you must use a 100-240 volt adapter input.

Can I use my rechargeable repeller while charging?

The repeller can be used while it's charging, but it will take longer to charge.

Troubleshooting

What should I do if my E-ZoneGuard Rechargeable Repeller won't turn on?

If your E-ZoneGuard Rechargeable Repeller does not turn on, try the following troubleshooting steps:

  1. Check the battery charge level.
    When the repeller is powered on, the battery indicator lights located below the power button will display the remaining charge:  If you miss the indicator, simply press the power button again to view the battery status.
    • 3 solid lights = Fully charged
    • 2 solid lights = approximately 50% charged
    • 1 solid light = approximately 25% charged
    • If no battery lights appear, the battery may need to be recharged. Ensure the USB charging cable is securely connected and allow the device to charge fully

      2. Verify that the repeller is properly assembled.
           Make sure the top half of the repeller is fully seated and correctly aligned with the bottom half. If the unit is not assembled properly, it will not power            on. 

      3. Ensure the top cover is installed.
          The top cover must be attached before turning on the repeller. If the cover is not in place, the device will not operate.

If the repeller still does not turn on after completing these steps, contact Contact Us for further assistance.

What should I do if my Radius will not power on?

We understand you are having an issue with your Radius where you cannot get it to power on. If you see blinking lights when trying to power it on:

First, try unlocking the device (if your device has this feature):

  • Remove it from it's charger and hold the power button in for 5 seconds or longer, it should blink to indicate "locked mode" is now turned off. If there are no lights present: 
    • Does the battery indicator light turn on when you insert a charging cable? If no:
      • Make sure cable is inserted fully into the charge port - If charging using a USB port in a computer, please charge using a standard wall outlet - Allow up to 5 minutes for the device to indicate that it is charging the battery indicator should begin to blink once battery has minimum power.

If these steps do not work, please contact us.

Why won't my Radius Repeller stop blinking?

If your Radius will not stop blinking, first, if your device has a lock mode, try unlocking it.

  • Remove it from it's charger and hold the power button in for 5 seconds or longer, it should blink 3 times and shut off.
  • Then press and hold the on button for no more than 1-2 seconds, it should turn on and the LED will stay solid.

If that still did not work, try the following:

  • Ensure nothing is blocking the connection from the bottom of the device and the top of the device.
  • Ensure the device top is securely seated on top of the bottom, try removing the top and replacing.
  • Ensure there is a cartridge in the device

Please let us know if you have done these steps and what the result was in order for us to help you from there.

What does a flashing red light mean on my E-ZoneGuard Rechargeable Repeller?

For the E-ZoneGuard Rechargeable Repeller, a low battery is indicated by a three-tone audible alert consisting of the same note repeated three times. If the battery level is too low to power on the device, all three battery indicator lights will flash, with the final light displaying red to indicate that the battery needs to be recharged.

What should I do if my E-ZoneGuard Rechargeable repeller won't turn off?

If your E-ZoneGuard Rechargeable repeller will not turn off, press and hold the power button for approximately 2 seconds until you hear the descending chime and the illumination around the power button turns off.

Additionally, if the top of the repeller is removed, the device will automatically shut off as a safety feature.

If you need further assistnace, contact Contact Us

What do I do if my E-ZoneGuard Rechargeable Refill leaks?

If your E-ZoneGuard Rechargeable Refill leaks, please wipe off any repellent residue with a cloth or paper towel from the repeller. The refill should still be good to use in your repeller. Please wash hands after cleaning of the repellent cartridge. 

The amount of liquid in a rechargeable refill cartridge varies by refill size and rated protection hours. Larger cartridges (36-hour and 40-hour) will appear mostly or completely full, while smaller cartridges (8-hour, 12-hour, and 18-hour) contain proportionally less liquid. Variations in liquid level are normal and do not indicate a leak.

If you believe your refill has leaked, please refer to the refill level chart Refill Level Chart for examples of normal fill levels at the time of purchase. If you still need assistance, please reach out to  Contact Us

 

 

Why is there residue on my E-ZoneGuard Rechargeable Repeller?

Occasionally, condesation may form on the E-ZoneGuard Rechargeable Repeller during use.  This is normal and does not affect performance.  Simply wipe the unit clean with a cloth or paper towel and wash your hands afterward. 

 

What should I do if my E-ZoneGuard Rechargeable Repeller is not repelling mosquitoes?

If your E-ZoneGuard Rechargeable Repeller is not effectively repelling mosquitoes, try the following:

  1. Check the refill cartridge to ensure it is properly installed and contains repellent.
  2. Verify that the device is turned on. The repeller should display four solid LED lights, indicating it is operating correctly.
  3. Turn the device on at least 15 minutes before use to allow the protection zone to fully establish.
  4. Position the repeller in the center of the area you want to protect for optimal coverage.

Following these steps will help ensure your repeller performs as intended. If you need further assistance reach out to Contact Us 

 

What do I do if my Radius Repeller will not turn on?

If your Radius will not turn on, please make sure device is charged. Recharging time is almost equal to run time, so it can take almost 6 hours for a full charge. Ensure the top is fully seated on the repeller, the unit will not power on without the top

Why does my E-ZoneGuard Rechargeable Repeller show a low battery after being charged?

On initial production it is possible for the battery status indicator to remember the last power state prior to charging. Turn the unit on and recheck the battery status after 30 seconds. It will read the true level.

What does the red light on my E-ZoneGuard Rechargeable Repeller indicate?

The E-ZoneGuard Rechargeable Repeller has two low-battery indicators:

  • When the battery is running low, the device will emit a three-tone audible alert.
  • If the battery level is too low to power on the device, all three battery indicator lights will flash, with the last light illuminated red.

Additionally, the repeller may display four solid protection-zone LEDs while showing a red battery light. This indicates that the repeller is operating on a critically low battery and has approximately 30 minutes of runtime remaining before it automatically shuts down.

How do I install the Fuel-ZoneGuard Extreme Mosquito Repeller (MR450)

To change the battery in the Fuel-ZoneGuard Extreme Mosquito Repller (MR450):

  1. Remove the two screws on the back of the device that secure the battery compartment cover.
  2. Once the cover is removed, you sill see a small white batter tray (batter caddy) inside. Carefully slide the tray out.  If needed, use a small flat-head or pointed tool to gently assist with removal.
  3. Insert the new lithium battery into the tray, making sure the positive (+) side of the battery aligns with the positive (+) marking on the tray.
  4. Slide the tray back into its housing until it is fully seated.
  5. Reistall the battery compartment cover and secure it using the two screws you removed ealier.
  6. Install your cartridge and your MAT, turn the device on and press the igniter a few times. In about 10-15 minutes the LED indicator will be solid blue. Click here for more information and visuals on how to replace battery. 

What should I do if my Fuel-ZoneGuard Repeller isn't repelling mosquitoes?

If your Fuel-ZoneGuard™ Repeller does not appear to be repelling mosquitoes, first make sure the device is operating properly and that the orange glow is visible in the viewing window. Also, confirm that you are using a fresh blue repellent mat.

For best results, allow up to 15 minutes for the repellent zone to become fully established. Once the device is operating, remain within approximately 7.5 feet of the repeller to receive optimal protection.

If there is wind or noticeable air movement, position the repeller upwind of the area you want to protect. Please note that strong or continuous airflow may reduce the overall effectiveness of the repellent zone.

If you continue to experience issues or have any additional questions, please reach out to Contact Us.  We are happy to help. Thank you.

Fuel-ZoneGuard Base Repeller formly known as (Patio Shield) Missing Cap

The cover for the FuelZoneGaurd Base Repeller formly known as (Patio Shield) was designed as a decorative "cap" to put on the top of the device when not in use. It is not required for the repeller to function. We stopped producing these caps some time ago when we learned that the caps were causing confusion and users were running their repellers with the cap on. The cap can also trap debris in the device as well. These lead to negative experiences with the product, so we chose to remove the cap going forward. We're sorry for any confusion this may have caused, and recognize that due to the timing of the change, some of our packaging may have continued to show a cap.

What gas canisters are compatible with the Fuel-ZoneGuard Backpacker repeller?

Our backpacker product will work with the following camping gas stove canisters and others, that use the Lindal valve:  The Fuel-ZoneGuard Backpacker must use a mix of Butane/Propane refills that are 70/30 ( 70% butane and 30% propane). Fuel canister must be pressurized self-sealing (iso) butane and propane fuel mix (product will not function with 100% propane).  

  • JetBoil
  • MsrPro
  • Primus
  • Snowpeak
  • Optimus

These camping gas stove canisters can be found in any major outdoor retailer. Dicks, BassPro, Cabela's, REI, and others.

How do I replace my charging cable?

For a lost of damaged charging cable, you can make use of any cable that works with a Galaxy, Samsung style mobile phone, or a USB listed/certified class 2 power unit charge marke 5V-DC 1000 ma, should be fine. These cables are also readily available at many retailers, like a Staples or a Best Buy. 

Why is my battery duration short on my rechargeable repeller?

Environmental factors can alter battery run time. The hotter it is the less battery life you will experience.It is important to maintain your battery. Batteries should not be left fully depleted for extended periods of time. They should be fully charged at least once every 2-3 months.

What should I do if my E-ZoneGuard Rechargeable repeller will not charge.

When charging you should see 3 white ascending/flashing lights - If you do not see this, make sure cable is firmly connected or try another usb cable to see if the 3 white ascending/flashing lights appear - If you do see the 3 white ascending/flashing lights while charging, charge completely - Unplug the usb cable when charging is completed and turn on your repeller. It should be working - After charging completely test your repeller to see if it is working properly - Turn on your repeller and you should see 4 chasing lights become 4 solid lights - This will mean your repeller is ready and has reached temperature to activate the zone.  If the 4 chasing lights do not become 4 solid lights something is wrong, call 1- 866-753-3837 or Contact Us