Display shows U01 and the cooker does not start the selected program.

Steps:

• Check the manual: Confirm the correct lid position and valve setting for the chosen program (e.g., frying with lid open, pressure cooking with lid locked and valve closed).
• Cancel and reselect: Press Cancel, then reselect the desired program and adjust time/temperature.
• Power cycle: If U01 persists, unplug for 1–2 minutes and retry.

If the error appears regardless of mode or lid position, the internal logic or lid sensor may be faulty and require service.