Unit trips the household circuit breaker or GFCI when plugged in or when heating starts.

Safety first: Do not repeatedly reset a tripping breaker. Unplug the unit immediately.

• Visual inspection: Check the power cord for cuts or crushed sections. Replace if damaged.
• Check for moisture: If the unit was recently washed or exposed to liquid, allow it to dry for 24–48 hours in a warm, dry place.
• Inspect heater and wiring: Open the unit and look for wires touching the metal chassis or burn marks near the heater.
• Insulation test: With a multimeter, check for continuity between heater terminals and chassis; any reading indicates a ground fault and the heater must be replaced.
• Control board: If no external shorts are found, a component on the control PCB may be shorted; replace the board.