Washer-dryer combo heater relay or element shorted; may trip breaker or overheat quickly.

Safety first: Unplug the unit and do not reset the breaker repeatedly; this indicates a serious electrical fault.

• Inspect heater element: Remove the rear panel and visually inspect the heater coil for breaks touching the metal housing.
• Test for ground fault: With a meter, check continuity between each heater terminal and the heater housing. Any continuity indicates a shorted element that must be replaced.
• Check wiring: Look for melted insulation or wires contacting metal. Repair or replace damaged wiring.
• Evaluate control board: If the heater energizes when it should be off, the heater relay on the main control may be welded closed. Replace the control board.