3iE Energy-Monitoring Thermostat

It indicates that the thermostat is not set up correctly. Click "Read More" for details.

This message will occur if a ground fault is detected. Click "Read More" for details.

Heater error will occur if the heating system is not properly wired to the thermostat. Please click "Read More" for details.

The clicking noises are the relay opening and closing to let the power through to the heating system. While it should be hardly noticeable, it can be reduced by insulating the surrounding of the electrical…

It is likely to be a wiring or installation issue. Please consult our installation manual for further assistance. Troubleshooting steps will need to be done with a licensed electrician. Please have the electrician call us…

The ER2 message will occur if the floor sensor has a short circuit or has a loose connection. Click "read More" for details.

Please click "Read More" for instructions on how to un-mount your thermostat

The ER1 message will also occur if no floor sensor is connected to the thermostat. Have your electrician make sure that the sensor probe wires are securely connected in ports 1 and 2 of the…

If your thermostat has no display and will not turn on when power button is pushed, the thermostat could be wired incorrectly. Click here for more details.

Discover why your floor heat is not working despite there being no error messages showing on your thermostat. This guide explains common causes of heating issues and troubleshooting tips to restore your system.

If your floor temperature reading varies significantly from the actual temperature of the floor, it could indicate an issue with how the sensor probe was installed. Continue reading to learn how to identify and fix…

If your floor temperature reading significantly varies from the actual temperature of the floor, the sensor probe and cold tail lead may be in the same conduit. Putting both in the same conduit can cause…

Is your thermostat display flashing? We'll be happy to help get you on the right track in this quick post.

Do you need to test the GFCI on your Warmup thermostat? This post will provide the directions needed for performing this test.

Are you wondering why your thermostat says test monthly? Wondering what you should do? Learn all of that and more in this post.

Does it appear that your old thermostat has stopped working? Learn more here about what you can do next to get your floors warm again.

Is your thermostat stuck on the Warmup screen? To advance you'll want to confirm a few details found in this useful post.

The ER1 message will also occur if no floor sensor is connected to the thermostat. Have your electrician make sure that the sensor probe wires are securely connected in ports 1 and 2 of the…

The Control Fault message might occur for several reasons. Please contact your electrician to have them test the resistance of your heating system based on the heating model that was installed in your floor using…

One reason why your thermostat keeps tripping could be that you have GFI on the thermostat and the breaker simultaneously.  Click "Read More" for details.

If for some reason you need to change the time, do the following. Touch check under “wake.” Now the word “menu” will appear above the check. Touch it to begin. Next, touch the dash next…

Your 3IE allows the ability to temporarily change the floor temperature setting for a specific period of time. You will first need to “wake” your thermostat by touching the checkmark on the front screen. Notice…

Learn how to both set and delete a weekly programming schedule on your Warmup 7iE Smart Thermostat.

If you have set the floor type to any kind of floating floor, a safety feature in the thermostat will not allow you to increase the target temperature any higher than 81 degrees. Click "Read…

Wondering how Warmup thermostats work? Learn all about how they work by reading more here.

You may be able to alter your advanced settings, allowing your floor to heat above 86°F, depending on the finished flooring type you have.

When you have multiple floor heating systems being powered that require more than 15amps, you can use an additional 3iE as a relay as opposed to purchasing a separate generic relay which Warmup can supply.

Yes. The box and mounting requirements are identical for all horizontal Warmup thermostats and the sensor is compatible. If you'd like to swap a 3iE for a 4iE or Tempo thermostat you will need to…

Do you have an old Warmup thermostat that you'd like to upgrade to the 6iE? Learn all you need to know in this post.

Yes, please click "Read More" for details.

To turn on your system once your thermostat has been installed, simply turn on the breaker. The thermostat screen will light up. After setting the basic parameters of the thermostat, select a steady temperature in…

When setting up a large installation and connecting two or more thermostats as Master and Relays, all devices MUST have a floor sensor hooked up. Click "Read More" for details. 

The floor probe wire can be trimmed. Learn more here.

Read this before choosing your gang box. Click "Read More" for important information.

Are you wondering about the mount location of your relay? Learn more about mounting your relay in this post.

Do you have a large project that you'd like to use multiple relays for? Learn more about connecting more than one relay in this post.

That floor probe is an important part of having your floor heating system function properly.  Click "Read More" for details.

Learn how to wire your 3iE and probe for both 120V and 240V configurations.  Always use a licensed electrican.  Click "Read More" for details.

In the event of a power outage, the capacitor will hold the charge for approx 1 hour, after which time the device will require re-programming.

Powering off your thermostat is an important function to be familiar with, as it allows you to completely shut down your system when needed. Whether you prefer visual guidance or step-by-step instructions, we have you…

Do you have a Warmup Thermostat but are unsure which model you have? Read this post to help identify which model you have installed.

Not at all. Click "Read More" for details.

Yes! Click "Read More" for details.

The resistance for your mat or cable is calculated on the length of the heater. Shortening the heater would increase the resistance and thereby the temperature. The cable is expected to operate fine at slightly…

If your heating system was installed on a concrete slab or over an unheated space and insulation boards were not used, it is possible that the heat loss into the subfloor will cause your floors…

Warmup's 3iE is designed to make the initial programming incredibly easy.  Click "Read More" where we outline how to do it.

If you are looking to heat multiple spaces separately, you will require multiple thermostats. Read more in this post about zoning.

Want to learn more about the thermostat requirements for floor heating? This post explores several factors you should consider.