E13 appears and the dishwasher may trip the breaker or shut down when the heater should energize.

Safety first: Turn off power at the breaker. Do not reset a repeatedly tripping breaker without finding the cause.

• Inspect heater terminals: Access the base of the dishwasher and locate the heater terminals. Look for signs of arcing, corrosion, or water around the connections.
• Test for ground fault: With the heater disconnected, use a multimeter on the highest resistance range between each heater terminal and the metal chassis. Any measurable continuity indicates a ground fault and the heater must be replaced.
• Check wiring: Inspect heater wires for cuts, melted insulation, or contact with sharp metal edges. Repair or replace damaged wiring.
• Examine high-limit thermostat: Ensure the thermostat body is intact and not shorted to ground. Replace if damaged.
• Replace heater assembly: Install a new Viking heater, ensuring all seals are properly seated to prevent leaks and that wiring is routed away from hot or sharp surfaces.