Make sure that the floor probe that came with the floor heating thermostat was installed and done so properly.
Warmup Inslab Cable – INSLAB
Each Warmup thermostat comes accompanied by a floor probe sensor. For temperature reading accuracy be sure that the floor probe sensor is installed equidistant between two cables. Addionally, be sure the floor probe never touches or crosses the heating cable.
For complete installation instructions please visit our literature page.