How to Troubleshoot and Repair Heating Systems

As a first-class floor heating distributor, we only carry the most durable, well-designed electric floor heating systems available.

Occasionally, heating elements are accidentally cut with tile saws or blades for clearing grout, crushed with heavy buckets of cement, or drilled through while installing drains.

If this happens to you, don’t worry! Easy-to-use repair kits are available for each heating system, and most systems can be repaired even if they have already been tiled over. We have created this article to help guide you in troubleshooting and finding the right solution should you have a problem with your system.


  • Step 1: Check the resistance on the heating elements using a Digital Multimeter (Ohm meter).
    • This is the only 100% sure way to tell if the heating elements have been damaged. Each mat and cable will come with a UL tag on the power leads that will show what the resistance should be.
    • If the resistance reading is correct, then you know that the heating elements are 100% functional. In this case, double-check that the correct power (120v or 240v) is being supplied to the system. If the correct power is supplied and the system still is not working, the thermostat may be the problem. If this is the case, see the thermostat troubleshooting section at the end of this article.
    • If the resistance reading is incorrect and the flooring has NOT been installed, skip to step 3.
  • Step 2: If the floor has already been installed, you will need to find the location of the break in the heating element.
    • To do this, call us at 1-866-558-3369 to get in contact with a technician for your specific product.
    • NOTE: If the break is inside a shower floor, it cannot be repaired since the waterproof coating has been compromised. The built-in GFCI on the thermostat will trip and not allow a repaired heating element to run in a shower or wet area.
  • Step 3: Once you have located the break in the system, you need to purchase the appropriate repair kit depending on the product you are using and the location of the break.

Each repair kit comes with a list of required tools and instructions, which you can also download from our Knowledge Center.


If a heating system is not working and the resistance on the heating elements is within normal ranges (based on the UL tag attached to the element), then there may be a problem with the thermostat.

Floor heating thermostats are far more sophisticated than HVAC thermostats like those you use to operate air conditioners and forced-air heaters. Since they are designed to handle high-voltage power coming directly from the breaker panel, floor heating thermostats have more mechanical parts than HVAC thermostats, and their high-grade GFCI protections are built in. Because of this, they have a lower lifespan than HVAC thermostats and will need to be replaced eventually.

While it is not unheard of for thermostats to need to be replaced after 4 or 5 years, we have also had thermostats last as long as 12 to 14 years. A proper installation (e.g., inside of a deep electrical box and out in the open rather than inside a cupboard or closet) can help ensure your thermostat will last as long as possible, so make sure to thoroughly read the installation instructions that come with your unit before you install.

All of the thermostats we carry come with a 3-year manufacturer warranty. If you are having any trouble with a thermostat that has been installed less than three years, give us a call at 1-866-558-3369 and we can put you in contact with a technician for your product who can troubleshoot the unit with you and replace it if necessary.

8 thoughts on “How to Troubleshoot and Repair Heating Systems”

  • William Foote says:

    Hello. I have a Solo PB thermostat that was installed about 5 years ago and found out today that the thermostat display was constantly flashing full screen numbers on/off but would not respond to the programming button or the test button. The circuit board number is OEM632-GA/U. Based on the information I have read here on the website, it appears that the thermostat is bad. Do you still sell this unit and where may I purchase a replacement?

    Thank you.
    Bill Foote
    345 Riverview Dr.
    Youngstown, NY 14174

    • Hi William,

      Thank you for reaching out regarding your thermostat. We no longer carry the Nuheat Solo, but we do have their direct replacement for this. The direct replacement is called the Nuheat Home and it is a great programmable thermostat that is easily installed. Here is the link for this:

      All of our thermostats that we carry can be used with any brand and type of floor heating systems. Feel free to check out more thermostat options here. If you have further questions, you can reach out to us at 866-558-3369 or email us at Thanks, William!

      Warm Regards,
      Warm Your Floor Team

  • I have a SunTouch Floor Warming System that was installed some 12 – 13 years ago. The thermostat that I have is unlike any that you show. I need information how to set thermostat so that it warms floor daily. Currently, most days temp is 72-73 except one day it will be 81. How do I program this older thermostate?

    • Hi Don,

      We would love to help you figure out how to properly program your thermostat! We will need a little more information and possibly a picture of this thermostat in order to help you out. Please, send us an email at with the details and picture of this and we will help you with troubleshooting.

      Also, check out the new thermostats that we offer to get the most out of your floor heating system. All thermostats are compatible with all types and brands of floor heating systems. You can find them here:

      Warm Regards,
      Warm Your Floor Team

  • our den and hallway floor is covered with nuheat and bamboo flooring, love it and have had it 1908 with out problems. I recently spilled soapy water on it, (flooded actually) and then the system gave a pop and would not work. Of course we turned it off immediately and have waited for several days now…today the “standby” sign came on…do you think it will simply dry out and work again??? We certainly don’t want to burn out the system.
    Thank you in advance for any info you are able to share.
    Linda WilSt Paul, Mn

    • Hi Linda,

      Thank you for reaching out to us! We recommend that you turn the power off at the breaker and call us at 866-558-3369. We want to make sure to locate and figure out the issue with this.

      Warm Regards,
      Warm Your Floor Team

  • Richard Curry says:

    My floor heating system, (Sunstat Pro model 500670) was installed in mid-2010. It stopped working a few days ago, with no error message appearing on the screen. I turned the unit on and off then turned the breaker on and off. I opened the thermostat to verify all wiring was connected, including the floor sensor – all was intact. The thermostat shows it is heating but no heat comes up from the floor. I then set the thermostat to “Regulator” mode (per owner’s manual) to see if by passing the floor sensor would heat the floor. Still no heat. Does this mean my floor heating system is totally non-functional and no longer usable?

    • Hi Richard,

      Thank you for reaching out to us. Please, give us a call at 866-558-3369 so we can better determine the issue. This may be that you are in need of a replacement thermostat in order to get the floor to heat up properly. Thanks, Richard!

      Warm Regards,
      Warm Your Floor Team

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