How to Fix / Troubleshooting

Safety first: Disconnect power and allow the unit to cool before working near the vent outlet.

1. Inspect vent outlet: Check the external vent or hood for obstructions such as grease buildup or foreign objects.
2. Test fan operation: During a cycle (with panels removed and power restored), observe whether the vent fan runs when commanded. If not, test for voltage at the fan terminals.
3. Check fan motor: With power off, measure resistance of the fan motor windings. An open circuit indicates a failed motor.
4. Clean ducting: Remove and clean any internal ductwork that may be blocked with steam condensate or grease.
When to call a technician: If the fan motor or control output is defective, professional replacement is recommended.

Dishwasher displays E20; exhaust or venting error on models with vent fans

Possible Causes