Understanding Why Your Ecobee Keeps Restarting | Troubleshoot Guide

Are you constantly wondering, “Why does my Ecobee keep restarting?”

Dealing with a thermostat that constantly reboots can be frustrating and inconvenient. But don’t worry, we’re here to help.

In this comprehensive troubleshooting guide, we’ll walk you through the common reasons behind your Ecobee’s frequent restarts as well as provide you with expert tips to resolve the issue.

Whether it’s faulty wiring, overheating, or system malfunctions, we’ve got you covered.

By the end of this article, you’ll have the knowledge you need to troubleshoot and fix the issue, ensuring optimal performance for your Ecobee system.

Wiring Issues: Checking the Connection

One possible cause of frequent restarts is damaged or loose wiring.

The thermostat requires a continuous 24-volt A/C power supply, provided by the R (red) wire and the C (common) wire.

If these wires are not correctly connected to the thermostat, HVAC control board, or Power Extender Kit, it can disrupt the power flow and cause the thermostat to restart.

To troubleshoot this issue, you can check for loose connections, spliced wires, or corroded wires and take appropriate steps to fix them.

If you suspect wiring issues, start by turning off the power to your HVAC system and thermostat.

Carefully inspect the wiring connections at both ends, ensuring they are secure and free from any damage.

Look for any loose or disconnected wires, and if necessary, reconnect them firmly.

If you notice any signs of corrosion or damage, it may be necessary to replace the affected wires.

It’s also a good idea to check the compatibility of your thermostat wiring with your HVAC system.

Different systems may require different wiring configurations, so consulting the manufacturer’s documentation or contacting customer support can provide valuable guidance.

If needed, you can refer to an HVAC professional for assistance in rewiring or making any necessary adjustments to ensure proper connectivity.

Signs of Wiring IssuesConsult the manufacturer’s documentation or contact customer support for guidance
Intermittent or frequent restartsCheck for loose or disconnected wires
Corroded or damaged wiresReplace affected wires
Incompatible wiring with HVAC systemConsult manufacturer’s documentation or contact customer support for guidance

By ensuring proper wiring connections and addressing any issues promptly, you can eliminate wiring-related problems as a potential cause of your Ecobee thermostat’s frequent restarts.

Furnace Overheating: Prevention and Cleaning

Another common cause of frequent reboots in your Ecobee thermostat is an overheating furnace.

When the furnace is overworked or there is a buildup of dirt and debris, especially in the air filters, it can lead to overheating and subsequent restarts of the thermostat.

To prevent this issue, it is important to take preventive measures and ensure regular maintenance of your HVAC system.

Prevention Measures:

To prevent your furnace from overheating and causing frequent restarts, follow these steps:

  1. Keep the heat set point at a reasonable level to avoid excessive strain on the furnace.
  2. Regularly clean or replace the air filters to prevent them from getting clogged with dirt and debris.

Cleaning the HVAC System:

In addition to the prevention measures mentioned above, regular cleaning of your HVAC system can help prevent overheating and frequent restarts.

Here are some key areas to focus on:

  • Clean the condensing coil: The condensing coil is responsible for releasing heat from the system. Over time, it can accumulate dirt and debris, obstructing proper heat transfer. Clean the coil using a soft brush or vacuum cleaner.
  • Check the heat exchanger: A dirty heat exchanger can restrict airflow and cause the furnace to overheat. Inspect the heat exchanger for any signs of dirt or corrosion and clean it if necessary.
  • Inspect the blower motor: The blower motor circulates air throughout the HVAC system. Ensure that it is clean and functioning properly to prevent overheating.

By following these preventive measures and regularly cleaning your HVAC system, you can minimize the risk of furnace overheating and frequent restarts of your Ecobee thermostat.

Table: HVAC System Cleaning Checklist

Condensing CoilClean with a soft brush or vacuum cleaner to remove dirt and debris.
Heat ExchangerInspect for dirt or corrosion. Clean if necessary.
Blower MotorCheck for cleanliness and proper functioning.

Regular maintenance and cleaning of your HVAC system can go a long way in preventing furnace overheating and frequent restarts of your Ecobee thermostat.

By taking proactive measures and ensuring a clean and well-maintained system, you can optimize the performance and reliability of your Ecobee smart thermostat.

Drainage Issues: Clearing Clogs and Cleaning

When your Ecobee thermostat keeps restarting, it could be due to drainage issues in your air conditioning unit.

Excess water build-up from condensation can cause the unit to turn off and reboot the thermostat.

To resolve this issue, you can take the following steps to clear clogs and clean the drainage system:

  1. Empty and clean the drain pan: Locate the drain pan underneath your HVAC unit and carefully remove any water that has accumulated. Clean the pan using a mild detergent and warm water to remove any dirt or debris.
  2. Check for clogs in the drainpipe: Inspect the drainpipe connected to your air conditioning unit for any blockages or clogs. Use a plumber’s snake or a wire brush to clear the pipe if necessary.
  3. Clean the condensate line: The condensate line is responsible for draining water from your HVAC unit. Remove the line and use a pipe cleaner or a mixture of vinegar and water to clean away any built-up residue.
  4. Maintain regular maintenance: To prevent water-related restart issues, it’s important to perform regular maintenance on your drainage system. This includes cleaning the drain pan and condensate line at least once a year, or as recommended by the manufacturer.

By taking these steps to clear clogs and clean your drainage system, you can help prevent excess water build-up and resolve the issue of your Ecobee thermostat constantly restarting.

Table: Troubleshooting Drainage Issues

IssuePossible CauseCondensation from the air conditioning unit
Excess water build-upEmpty and clean the drain pan
Check for clogs in drainpipe
Clean condensate line
Maintain regular maintenance
Empty and clean the drain pan
Check for clogs in the drainpipe
Clean condensate line
Maintain regular maintenance

Compatibility and Circuit/Wiring Issues

why does my ecobee keep restarting
Photo credit: ecobee.com

When your Ecobee thermostat keeps restarting, one potential cause to consider is compatibility and circuit/wiring issues.

If you have a proprietary-style system or incorrect wiring, it can prevent the thermostat from functioning properly, leading to frequent reboots.

To resolve this issue and ensure optimal performance, it is recommended to contact customer support or consult with a professional technician.

Each HVAC system can have unique compatibility requirements, and it is crucial to verify compatibility and ensure the correct settings are in place.

By reaching out to customer support, you can receive guidance on troubleshooting steps and potential solutions for your specific setup.

Taking the time to research and address compatibility and wiring concerns will help prevent the inconvenience of continuous restarts.

Additionally, if you have made any recent changes to your HVAC system or thermostat, such as installing a new furnace or upgrading your wiring, it is important to ensure that the components are compatible with your Ecobee thermostat.

Incompatibility issues can disrupt the functioning of your thermostat and result in frequent restarts.

Proper Circuit and Wiring Setup

When it comes to circuit and wiring setup, it is crucial to follow the manufacturer’s instructions and guidelines.

Incorrect wiring connections or inadequate power supply can cause the thermostat to constantly reboot.

Verify that the wiring connections are secure and properly connected to both the thermostat and the HVAC control board, or Power Extender Kit (PEK).

Additionally, if you have recently installed a PEK, double-check that the PEK wiring is correctly installed according to the provided instructions.

Incorrect PEK wiring can disrupt the power flow and lead to continuous restarts.

Taking the time to review the wiring setup and ensure its accuracy will help resolve this issue and prevent further disruptions.

Compatibility issues with proprietary-style systemsContact customer support or consult with a professional technician to verify compatibility and ensure correct settings.
Incorrect wiring connectionsDouble-check the wiring connections to the thermostat and HVAC control board/PEK.
Inadequate power supplyEnsure the thermostat is receiving sufficient power by verifying the wiring and connections.
Incorrect PEK wiringReview the PEK wiring setup and ensure it is correctly installed according to the provided instructions.

By addressing compatibility and circuit/wiring issues, you can successfully troubleshoot the frequent restarts of your Ecobee thermostat and enjoy uninterrupted comfort and control in your home.

Power Issues and Breakers

Power issues can often be the culprit behind frequent restarts of your Ecobee thermostat.

When the HVAC system does not receive sufficient power, it can result in intermittent restarts.

To troubleshoot this issue, there are a few steps you can take to ensure proper power supply.

First, check your breaker box to see if any circuit breakers have tripped.

If you find a tripped breaker, reset it and monitor the system to see if the restarts persist.

If the problem continues, it may be necessary to consult an electrician to inspect the wiring connections and ensure they are properly secured.

In some cases, a bad capacitor or faulty wiring can also lead to power issues.

It is advisable to have a professional technician evaluate these components to determine if they need to be repaired or replaced.

By addressing power issues and ensuring a stable power supply to your Ecobee thermostat, you can minimize the chances of frequent restarts and optimize the performance of your HVAC system.

Sensor and System Malfunctions

ecobee thermostat

If your Ecobee thermostat keeps restarting, it could be due to malfunctions in the sensors or other components of the system.

These issues can disrupt the proper functioning of the thermostat and lead to continuous reboots.

Here are some potential malfunctions to be aware of:

  1. Condensate pump: A malfunctioning condensate pump can cause the system to reboot frequently. Inspect the pump for any signs of damage or blockages, and consider replacing it if necessary.
  2. Backward wiring: Incorrect wiring or reversed connections can disrupt the flow of power and cause the thermostat to restart. Check the wiring connections to ensure they are properly aligned.
  3. Incorrect PEK wiring: If you have a Power Extender Kit (PEK), make sure it is correctly wired to the HVAC control board and the thermostat. Incorrect wiring can lead to restart issues.
  4. Tripped high-limit temperature sensor: The high-limit temperature sensor is designed to protect the furnace from overheating. If this sensor is tripped, it can cause the thermostat to reboot. Check the sensor and reset it if needed.
  5. Dirty flame sensor: A dirty flame sensor can prevent the furnace from igniting properly, leading to frequent restarts. Clean the flame sensor to ensure it functions correctly.

Troubleshooting these sensor and system malfunctions requires careful inspection and potential maintenance or replacement of components.

Refer to the manufacturer’s documentation or consult with a professional if needed to ensure proper handling and resolution of the issues.

Example Table:

MalfunctionSymptomsPossible Solutions
Condensate pump malfunctionFrequent rebootsInspect and replace the pump if necessary
Backward wiringIntermittent restartsCheck and correct wiring connections
Incorrect PEK wiringRestart issuesVerify and adjust PEK wiring
Tripped high-limit temperature sensorFrequent restartsInspect and reset the sensor
Dirty flame sensorIgnition problems and restartsClean the flame sensor

By addressing these sensor and system malfunctions, you can resolve the frequent restart issues with your Ecobee thermostat and ensure its smooth operation.

Proper troubleshooting and maintenance are essential to keeping the thermostat functioning optimally.

Seeking Professional Help

If none of the troubleshooting tips mentioned above resolve the issue, it may be necessary to seek professional help.

HVAC technicians can provide expertise in diagnosing and fixing complex issues with the Ecobee system.

It is important to consult with professionals to avoid causing further damage to the system.

When seeking professional help, ensure that the technician is experienced with Ecobee thermostat systems and has the necessary certifications.

They will have the knowledge and tools to identify and address any underlying problems that may be causing your Ecobee thermostat to keep restarting.

Additionally, professional technicians can guide any warranty coverage that may apply to your Ecobee thermostat.

If your thermostat is still under warranty, contacting Ecobee customer support is recommended.

They can assist with troubleshooting steps and potential warranty coverage, and facilitate any necessary replacement or repair processes.

Table: Pros and Cons of Seeking Professional Help

Expertise in diagnosing and fixing complex issuesCost of hiring a professional technician
Knowledge of Ecobee systems and compatibility requirementsPossible wait time for an appointment
Access to specialized tools and equipmentPotential inconvenience of scheduling
The potential inconvenience of schedulingReliance on external help for troubleshooting

By seeking professional help, you can ensure that your Ecobee thermostat issues are resolved efficiently and effectively.

Remember to communicate any troubleshooting steps you’ve already taken to the technician, as this will help them better understand the situation and provide targeted solutions.

Prioritizing professional assistance can save you time, effort, and potential frustration in dealing with a persistently restarting Ecobee thermostat.

Warranty and Customer Support

If your Ecobee thermostat is experiencing frequent restarts and is still under warranty, contacting Ecobee customer support is recommended.

They have knowledgeable representatives who can guide you through troubleshooting steps and provide assistance with potential warranty coverage, replacement, or repair.

It is important to check the terms and conditions of the warranty, keep the proof of purchase, and provide any necessary documentation to expedite the resolution process.

When contacting customer support, be prepared to provide detailed information about the issue, such as the error messages displayed on the thermostat or any patterns observed in the restarts.

This will help them diagnose the problem more accurately and provide you with the most effective solution.

Remember, warranty coverage may vary depending on the specific model and purchase location, so it’s essential to consult with Ecobee customer support to determine the options available to you.

They will be able to offer personalized assistance based on your individual circumstances and help you get your Ecobee thermostat back to optimal performance.

Troubleshooting Tips:

  • Contact Ecobee customer support if your thermostat is under warranty.
  • Provide detailed information about the issue and any error messages seen on the thermostat.
  • Check the terms and conditions of your warranty and keep proof of purchase.

By taking advantage of the warranty and customer support resources available to you, you can ensure that your Ecobee thermostat restart issue is handled promptly and efficiently.


To troubleshoot frequent restarts of your Ecobee thermostat, it is important to address various potential causes.

These include wiring issues, furnace overheating, drainage problems, compatibility and circuit/wiring issues, power issues, and sensor and system malfunctions.

By carefully following the troubleshooting steps provided in this guide, you can resolve the issue and optimize the performance of your Ecobee thermostat.

If you have exhausted the troubleshooting tips and the problem persists, it is recommended that you seek professional help from HVAC technicians.

Their expertise can be invaluable in diagnosing and fixing complex issues that may be causing frequent restarts.

Consulting with professionals will ensure that you avoid causing further damage to the system.

If your Ecobee thermostat is still covered by warranty, contacting Ecobee customer support is advisable.

They can guide you through troubleshooting steps, advise on potential warranty coverage, and provide assistance with replacement or repair.

Remember to familiarize yourself with the warranty terms and conditions and keep the proof of purchase for a smoother resolution process.

By prioritizing safety and following appropriate guidelines when handling electrical components, you can effectively troubleshoot and resolve the issue of your Ecobee thermostat constantly restarting.

Enjoy the optimized performance and comfort that your Ecobee thermostat brings to your home.

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