Display shows incorrect temperature units or settings change unexpectedly during use.

Safety first: Unplug before cleaning the control panel. Do not spray cleaner directly onto the electronics.

Step-by-step checks:

• Panel cleaning: Wipe the control panel with a dry cloth first, then a slightly damp cloth if needed. Dry completely.
• Power reset: Unplug for 10–15 minutes to reset the control logic.
• Check for stuck keys: Press each button individually to ensure it moves freely and is not physically stuck.
• Inspect knob (if present): For models with a selector knob, ensure it is not cracked or slipping on the shaft.
• Replace panel or board: If settings still change on their own, the keypad/touch panel or control board may need replacement.

When to stop: Random setting changes can be a safety concern. If basic cleaning and reset do not help, seek professional repair.