Samsung Multifunction Printer Error Code #02-002

The Samsung #02-002 error indicates a fuser overheat condition, where the fuser assembly's temperature has exceeded its safe operating threshold. This fault can occur during multiple operational states including warm up, standby, sleep mode, and power save mode, which suggests the thermal runaway is not limited to active printing cycles. The fuser is the component responsible for applying heat and pressure to bond toner to paper, and it operates within a tightly controlled temperature window. When the thermistor or thermostat detects temperatures beyond the upper limit, the printer triggers this error as a protective shutdown.

The three primary hardware candidates for this fault are the fuser assembly itself, the fuser control board, and the engine controller. A failed fuser can contain a shorted heating element or a faulty thermistor that reports incorrect temperature readings, causing the control circuit to allow excessive heat buildup. The fuser control board regulates power delivery to the heating element, and a failure here can result in uncontrolled heating. The engine controller interprets thermal sensor data and governs the overall thermal management logic, so a fault at that level can also produce erroneous overheat signals.

Because the error appears across multiple power states including low-power modes, the issue may stem from a component that remains partially energized during standby or sleep cycles rather than strictly during active print jobs. Technicians should consider whether the heating element is receiving voltage when it should be idle, which would point toward the control board or engine controller rather than a passive fuser failure.