It is vital that the floor heating thermostat’s floor probe was not only installed but done so the right way. Click “Read More” for details. Make sure that the sensor probe is installed underneath the mat and placed equidistant BETWEEN two runs of heater wire.
“Draw an installation plan showing the placement of the mats, floor sensor, and lead wire(s) to the thermostat. The Warmup Foil heating system should be at least 6″” away from walls for laminate and 12″” away for carpet. “