Reset Your Hot Tub Heater Easily | Step-by-Step Guide

If you’re experiencing issues with your hot tub not heating up, it’s possible that your hot tub heater needs a reset. As a hot tub owner, one of the first things you should know is how to reset a hot tub heater.

Resetting your hot tub heater is a simple process. Some models have a quick reset button while others have a detailed step-by-step guide from the manufacturer. Before you reset your hot tub heater, it is also important to identify any potential problems and troubleshoot them.

In this article, we’ll provide you with a comprehensive guide to help you troubleshoot and reset your hot tub heater. We’ll guide you through the process of safely powering off your hot tub, locating the reset button, resetting the hot tub heater, and testing its functionality. By following our instructions, you can restore proper functioning to your hot tub’s heating system in no time.

Key Takeaways

  • Resetting your hot tub heater is a simple, straightforward process that can help resolve heating issues.
  • Before resetting, it’s important to understand potential hot tub heating problems and how to troubleshoot them.
  • Make sure to safely power off your hot tub before attempting to reset the hot tub heater.
  • Locate the reset button on your hot tub’s heating unit and follow the instructions to reset the system.
  • After resetting, ensure your hot tub is powered on correctly and test the functionality of the heating system.

Troubleshooting Hot Tub Heater Problems

Experiencing hot tub heating problems can be frustrating, but before you reset your hot tub heater, it’s essential to understand the underlying issues. Here are some common hot tub heating problems:

Problem Cause Troubleshooting Tips
No power to the heater Tripped circuit breaker or blown fuse Check the breaker or fuse and reset or replace as needed
Dirty filter Filter clogged with debris, limiting water flow Clean or replace the filter
Faulty hi-limit sensor Malfunctioning sensor shutting off the heater prematurely Replace the hi-limit sensor

If you’re experiencing a problem not listed here, consult your hot tub manual or a professional for assistance. Remember to always prioritize safety and turn off the power before troubleshooting your hot tub heater.

Water Chemistry

Another factor to consider when troubleshooting your hot tub heater is water chemistry. Properly balancing your hot tub’s pH and alkalinity levels can prevent damage to your heater and prolong its lifespan. High levels of calcium and other minerals can cause scale buildup, reducing the efficiency of your heater. Regularly testing your water and adjusting the chemicals as necessary can help prevent many hot tub heating problems.

“Proper maintenance of water chemistry is essential to the longevity of your hot tub, including the heating system.”

Now that you understand the potential causes of hot tub heating problems, let’s move on to resetting your hot tub heater.

Powering Off Your Hot Tub

Before restarting your hot tub heater, it’s essential to turn off the power supply of your spa. Follow these steps to ensure a safe shutdown:

  1. Locate the main electrical panel near your hot tub.
  2. Switch off the breaker that controls your hot tub’s circuit.
  3. Confirm that the power is off by checking your hot tub’s control panel display. (Note: some hot tubs may have an emergency off button; if your hot tub has this feature, be sure to push this button in addition to switching off the breaker.)
  4. Disconnect your hot tub from the power outlet. For added safety, you can also unplug the power cord or turn off the GFCI breaker adjacent to your hot tub.

Once you have powered off your hot tub, you can safely reset the hot tub heater. Keep in mind that if your hot tub’s pump has been running for a prolonged period, it may still retain some heat or pressure. Proceed with caution and wait for the water to cool down before restarting your hot tub heater.

restart hot tub heater

Locating the Reset Button

If your hot tub’s heating system is not working, you may need to use the reset button to fix the issue. Most hot tub heaters come equipped with a reset button that can be located by following these steps:

  1. Consult your hot tub’s owner’s manual to determine the make and model of the heater.
  2. Locate the heater panel on your hot tub, which is typically located near the spa’s control panel.
  3. Look for a small, round button labeled “reset” or “restart”.
  4. If you are having trouble finding the reset button, consult a professional or contact the manufacturer for assistance.

It’s important to note that the reset button may not solve all heating issues, especially if there is a larger problem with your hot tub’s heating system. In such cases, it’s best to seek professional assistance and not try to fix the issue on your own.

Resetting the Hot Tub Heater

Now that you’ve powered off your hot tub and located the reset button, it’s time to perform the actual reset. Follow these step-by-step instructions:

  1. Identify the reset button: Depending on your hot tub model, you may need to remove a control panel cover to locate the reset button. Refer to your hot tub owner’s manual or consult with a professional if you’re unsure.
  2. Press the reset button: Use a finger or a small tool to press the reset button. You should feel a click indicating that it’s been reset.
  3. Power your hot tub back on: Flip the power switch back on and let your hot tub restart.

After performing the reset, wait at least 15 minutes for the water to warm up to the desired temperature. If you continue to experience heating issues, consult with a professional.

Tip: It’s a good idea to clean your hot tub filters regularly to prevent heating issues and extend the life of your hot tub’s heating system.

Remember, resetting the hot tub heater can be a quick and easy fix for heating issues. By following these simple steps, you can avoid costly repairs and get back to enjoying your hot tub.

Powering On Your Hot Tub

Now that you have reset your hot tub heater, you can power it on again.

Before you begin, ensure the hot tub cover is completely removed, and the water level is at an appropriate level, between the minimum and maximum marks.

Next, turn on power to the hot tub at the breaker box.

Then, turn on the control panel of your hot tub. Check that the temperature settings, time, and any other features are correctly set.

Wait for the hot tub to heat up. It may take some time for the water to reach the desired temperature.

Once you’ve confirmed the hot tub is heating up, you can enjoy your soak.

Remember, safety is paramount. Do not touch any electrical components without appropriate knowledge. If you encounter any difficulties or issues, contact a qualified professional of hot tub repair to diagnose and repair your hot tub heater.

Testing the Hot Tub Heater

After following the reset process, it’s essential to test your hot tub heater to ensure it’s functioning correctly. Here are some troubleshooting tips you can use to help identify and fix any remaining issues:

  1. First, check that the water temperature has increased since you reset the heater. If not, wait a while longer, and then test it again.
  2. If the water is still not heating up, check the thermostat setting. Make sure it’s set to a high enough temperature.
  3. If the thermostat settings are correct, check the heater’s electrical connections. Ensure the power is on and that the cables are connected correctly.
  4. If the cables or power source are damaged, don’t attempt to fix it yourself. Contact a professional.
  5. If none of these solutions work, the heater may be broken and need replacement. Contact your hot tub manufacturer or a professional technician for further guidance.

Regular maintenance can help prevent these kinds of issues. Be sure to inspect your hot tub regularly and keep it well-maintained.

Remember, always prioritize safety. If you’re unsure or uncomfortable with troubleshooting the heater, it’s best to contact a professional to avoid any risks of harm or injury.


In conclusion, resetting your hot tub heater is a simple and effective way to troubleshoot and fix heating issues. By following the step-by-step guide we provided, you can quickly and easily reset your hot tub heater and restore proper functioning to your spa. It’s important to always prioritize safety and consult a professional if you encounter any difficulties or feel uncomfortable performing any of the steps.

We hope that this article has been informative and helpful in resolving any hot tub heating problems you may be experiencing. Remember to regularly maintain and clean your hot tub to prevent issues from occurring in the future. Thank you for reading and happy soaking!


What are some common hot tub heating problems?

Common hot tub heating problems can include:
1. Insufficient water flow through the heater, which can be caused by clogged filters or a malfunctioning circulation pump.
2. Low water level in the hot tub, which can cause the heater to overheat and shut off.
3. Malfunctioning thermostat or temperature sensors.
4. Faulty heating element in the heater.
5. Power supply issues or electrical problems.
If you’re experiencing any of these issues, it’s important to troubleshoot and address the underlying problem before attempting to reset the hot tub heater.

How do I power off my hot tub?

To power off your hot tub, follow these steps:
1. Locate the circuit breaker or disconnect switch for your hot tub. They are typically located near the hot tub or in your home’s electrical panel.
2. Switch off the circuit breaker or flip the disconnect switch to the “off” position.
3. Verify that the power to your hot tub is indeed turned off by checking if the control panel is unresponsive and any lights or indicators are not illuminated.
4. Always exercise caution when working with electricity and consult the manufacturer’s instructions or a professional if you are unsure about how to safely power off your hot tub.

Jeff Campbell