E15 appears and the unit may shut down unexpectedly; often associated with models that have internal current sensors.

Safety first: Unplug and allow the unit to cool. Do not operate with suspected motor faults.

• Step 1 – Check for obstructions: Inspect the fan area through the vents for any foreign objects or heavy grease buildup. Remove debris with a soft brush or vacuum.
• Step 2 – Listen for noise: During a brief test cycle, listen for grinding, squealing, or rattling from the fan area. These noises indicate bearing or balance issues.
• Step 3 – Internal inspection (advanced): Remove the housing to access the fan motor. Check that the fan blade is securely attached to the motor shaft and not rubbing against the shroud.
• Step 4 – Spin test: With power disconnected, spin the fan by hand. It should rotate smoothly and coast briefly. If it stops abruptly or feels rough, the motor is failing.
• Step 5 – Replacement: Replace the fan motor assembly if it is noisy, stiff, or drawing excessive current. Continued use can trip safety devices and damage the control board.