Display lights up but the Start button does nothing, unit will not begin cooking.

Safety first: Disconnect power before opening the control panel.

• Check for lock mode: Consult the user manual for any child lock or panel lock feature. Try the documented key combination to unlock.
• Power reset: Unplug the fryer for 5–10 minutes, then plug back in and test again.
• Panel cleaning: Clean the touch area with a soft cloth to remove grease that may interfere with capacitive sensing.
• Inspect ribbon cable: If comfortable, remove the control panel and reseat the ribbon cable between the UI and main board.
• UI replacement: If only the Start button area is unresponsive while other buttons work, the touch panel assembly may need replacement.