Display shows ERR or Error when attempting to set temperature or timer; oven may not start.

Safety first: No internal access is required initially.

• Clear the error: Press Cancel/Off to clear the display. Re-enter the desired function following the steps in the user manual.
• Check for stuck keys: Press each button individually to ensure none are stuck or double-entering. If a key feels sticky, clean the surface with a damp cloth (do not flood the panel).
• Power cycle: Turn off power at the breaker for 5 minutes to reset the control. Restore power and test again.
• Observe pattern: If ERR appears only when a specific key is pressed, the keypad membrane may be failing and should be replaced.

When to call a technician: Persistent ERR codes after reset and keypad cleaning usually indicate a failing control board or keypad that requires professional replacement.