Heater controller for supervising a heating element, the heater controller comprising the following features: - a power connection port (105, 110) for connecting the heater controller with a power source, the power connection port (105, 110) having an input contact and an output contact; - a heating element connection port (130, 135) for connecting the heater controller with at least one heating element, the heating element connection port (130, 135) having a first and a second connection contact; - a first switching element being connected between the input contact and the first contact of the heating element connection port, the first switching element being configured for switching power signals; - a serial connection, comprising a second switching element and a current sensor, the serial connection being connected between the second contact of the heating element connection port and the output contact, the current sensor being configured for providing a current signal representing a current through the current sensor; and - a control element being connected to the first and second switching element as well as the to current sensor, the control element being configured for providing a first control signal to the first switching element to switch the first switching element in an on-state or in an off-state, characterized in that the control element being furthermore configured for (receiving the current signal from the current sensor and for providing a second control signal to the second switching element to disconnect an electrical connection between the second connection contacts and the output contact in the case the current signal indicates a current through the current sensor in a time interval in which the control element controls the first switching element to be in the off-state, wherein the first switching element is configured such that a short-circuit through the first switching element is detectable, and wherein the first switching element is furthermore configured such that the first switching element is bringable in an off-state if a short-circuit is detected in the first switching element. - a power connection port (105, 110) for connecting the heater controller with a power source, the power connection port (105, 110) having an input contact and an output contact; - a heating element connection port (130, 135) for connecting the heater controller with at least one heating element, the heating element connection port (130, 135) having a first and a second connection contact; - a first switching element being connected between the input contact and the first contact of the heating element connection port, the first switching element being configured for switching power signals; - a serial connection, comprising a second switching element and a current sensor, the serial connection being connected between the second contact of the heating element connection port and the output contact, the current sensor being configured for providing a current signal representing a current through the current sensor; and - a control element being connected to the first and second switching element as well as the to current sensor, the control element being configured for providing a first control signal to the first switching element to switch the first switching element in an on-state or in an off-state,