Washer-dryer combo shows E12 and may stop heating or drying properly; sometimes associated with long dry times.

Safety first: Unplug the unit before accessing internal wiring. Cleaning the sensor bars can be done with power off and door open.

Step-by-step checks:

• 1. Clean moisture sensor bars: Inside the drum, locate the metal moisture sensor bars (usually near the front). Wipe them thoroughly with a cloth dampened with white vinegar or mild detergent to remove fabric softener residue.
• 2. Inspect for physical damage: Ensure the sensor bars are not bent or broken and that mounting screws are tight.
• 3. Check wiring connections: Access the backside of the sensor assembly from the front lower panel or side panel. Verify the sensor wires are securely connected and not broken.
• 4. Test the sensor: Use a multimeter to check continuity across the sensor terminals while bridging the bars with a damp cloth. The reading should change when the bars are bridged. Replace the OEM Monogram moisture sensor if it does not respond.
• 5. Reset and test: After cleaning and any repairs, restore power and run a sensor-dry cycle with a small load to confirm E12 is cleared and auto-dry works correctly.

When to call a technician: If the sensor and wiring are good but E12 persists, the main control board's sensor circuit may be faulty and require professional replacement.