Washer stops heating and shows E09; often on models with brushless (inverter) motors

Safety first: Unplug the washer. Do not attempt to bypass safety devices or relays.

Steps to check and address E09:

• Test the heating element first: Access the heater at the rear or front (model dependent). Measure resistance and check for insulation breakdown to earth. Replace the heater if faulty.
• Inspect wiring: Check the harness from the power module to the heater for burns or melted insulation. Repair or replace damaged wiring.
• Assess the power module: If the heater is good but E09 persists, the power module may have failed. Visual signs include burnt components or smell of burnt electronics.

When to call a technician: Replacement and programming of Siemens power modules/inverter boards should be done by an authorized technician due to high voltages and configuration requirements.