Personal consumer product with thermal control circuitry diagnostics and methods thereof

A personal consumer product, comprising:

• a power source;
• a first control unit comprising a plurality of ports;
• an energy emitting element in selective electrical communication with the power source;
• a plurality of sensors positioned to sense a temperature of the energy emitting element, each of the plurality of sensors in electrical communication with a respective port of the first control unit;
• a plurality of switching elements, each of the switching elements switchable between a conducting state and a non-conducting state to electrically isolate the energy emitting element from the power source;
• wherein the first control unit is to execute a diagnostics routine, the diagnostics routine comprising one or more of:
• testing the switching function of each of the plurality of switching elements between the conducting state and the non-conducting state;
• and
• testing the temperature sensing function of each of the plurality of sensors.