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The knob selection provides settings from 1 to 6 and each increase in number equates to approximately 7°C temperature difference. Position 1 represents 7°C and would be used for frost protection when the property is not occupied. Position 3 represents 21°C and is the normal comfort position. NOTE – Should your heater fail to come on when the thermostat knob is at a low setting, this may be due to the temperature of the room being higher than the thermostat setting. Timer/Programmer A digital tim