Sensorless mode is a regulation mode in the thermostat which allows you to select a heating percentage without use of any temperature sensor (aka ‘regulator mode’). This mode of operation is selectable only during the initial setup wizard.
Why use sensorless mode?
Sometimes neither floor mode nor room mode is suitable for regulating the amount of heat in the floor. For example:
•If there is a problem with the temperature sensor in the floor resulting in an error (E1/E2/E3)
•When environmental factors affect the temperature of the floor or the room in
unexpected or random ways (e.g. drafts or other heat sources)
•When the thermostat cannot be mounted inside a room where floor temperature control
is not possible.
This will be the unit going forward to replace a regulator TH113, or nHance UDG-4999 (if operating without a sensor in regulator mode)
How does it work?
•The thermostat is set to a fixed heating percentage of the cycle time (PWM duty cycle) -
i.e. if the thermostat says 75, it is set to heat 75% of the cycle time.
It is recommended to have a setting of 20-25% as a starting point.
•When Sensorless mode is activated, the heating indicator will be off. It will only light up in
case the thermostat has activated heating.
•When sensorless mode is activated, the screen will show the number in percent instead
of the actual temperature.
•When sensorless mode is selected, there will be no floor overheat protection enabled.
•Internal overheat protection of the thermostat itself remains active in sensorless mode