Dryer shows E12 and may not heat or may shut down quickly; often related to condenser or heat pump models.

Safety first: Disconnect power and allow the dryer to cool before accessing the condenser area.

Clean the condenser/heat exchanger:

• Remove the condenser unit from the front lower compartment (if removable). Rinse thoroughly under running water to clear lint from the fins. Let it drain fully before refitting.
• On fixed heat exchangers, use a soft brush and vacuum to remove lint from the fins via the access panel.

Check the condenser NTC:

• Locate the NTC sensor attached to or near the condenser/heat exchanger.
• With power off, disconnect and measure its resistance at room temperature. Replace if open circuit or clearly out of specification.

Airflow:

• Ensure the condenser compartment door seals properly and that no items block the air intake or exhaust grilles.

If E12 persists: On heat pump models, the compressor or associated electronics may be at fault. This is complex and should be diagnosed by a qualified technician.