Dishwasher displays E16; machine frequently trips the breaker or blows fuses

Safety first: Do not repeatedly reset a tripping breaker. Disconnect power and lock out the circuit before inspection.

• 1. Visual inspection: Remove access panels and inspect all visible wiring for burn marks, melted insulation, or signs of arcing.
• 2. Check for moisture: Look for water leaks around electrical components, especially near the heater terminals and pumps. Resolve any leaks before proceeding.
• 3. Isolate components: Disconnect one major load at a time (heater, wash pump, drain pump) and test whether the breaker still trips when the machine is powered.
• 4. Test resistance to ground: Using a megohmmeter or insulation tester, check each major component for shorts to chassis ground.
• When to call a technician: Electrical shorts can be hazardous. A qualified technician should perform detailed insulation and current draw tests and replace any shorted components.