Washer-dryer combo does not heat during drying cycle; clothes remain wet and cool, E5 displayed.

Safety first: Unplug the unit before removing panels. Heating components can retain heat; allow the machine to cool fully.

• Confirm drying settings: Ensure you have selected a drying program with heat (not air fluff or no-heat option, if available).
• Clean lint and condenser: Remove and clean the lint filter thoroughly. If your Summit combo has a removable condenser unit (usually behind a lower front panel), slide it out and rinse it under running water to remove lint and debris. Let it dry completely before reinstalling.
• Check airflow: Inspect internal air ducts (accessible after removing top or rear panel) for heavy lint buildup and clean carefully with a soft brush and vacuum.
• Inspect heater assembly (advanced): With the rear panel removed, locate the dryer heater element assembly. Look for obvious breaks in the coil or burnt spots. Use a multimeter (if you are qualified) to check continuity across the heater terminals and the high-limit thermostat/thermal cutoff mounted on the heater housing.
• Replace failed components: If the heater is open (no continuity), replace the heater assembly. If the thermal cutoff or high-limit thermostat is open, replace them as a set and ensure airflow paths are clean to prevent repeat failure.

Because heater circuits operate at high voltage, if you are not experienced with electrical testing, contact a professional technician.