3iE Energy-Monitoring Thermostat

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Why is my floor not heating but there are no error messages?

If your floor is not heating, you should contact your electrician to do proper troubleshooting. Have your electrician check the resistance readings and make sure the proper voltage is wired from your panel to the thermostat. The amperage of the heating system should match the amperage coming from the panel. Also check to make sure that all wiring is correct by having your electrician check the manual.

Please make sure that when you are programming the thermostat that the red light comes on during times when you would like your floor to heat. If this red light in the top right corner of the thermostat does not turn on, check your programming. Make sure your target temperature is higher than the floor temperature reading.

Lastly, consider what your subfloor type is. If your system has been installed on a concrete slab or over an unheated space and no insulation was used, downward heat loss will cause your heating system to warm your floor much more slowly. 

    • Breaking Bread

      My electrician fitted a 3Ei unit to replace the original 9 year old unit. We suspected a fault with the old thermostat as the floor would not heat up. The 3Ei unit appears to operate correctly, no error messages however the floor is stone cold. The electrician tested the heating circuit, no problem identified. The floor covering is tiles, I have tried all options of probe, using the air temperature sensor and floor sensor, regulator, reset, nothing works. The program is set at constant temperature 30degrees. Strangely the energy usage reading is showing 8kw over 24hs, pretty bar graph, cold floor. No error messages are showing. The en-suite bathroom is approx. 6m2. The temperature displayed for air and floor look reasonable and increase as the room warms up due to the radiator, however the floor remains stubbornly cold. Is the unit at fault?

      • Hi Breaking Bread (very punny ; ) ),

        Call our technical support line and I would be happy to go through everything with you to try and determine why it’s not heating.
        CA: 1- 888-592-7687.