E7 error appears and the freezer may not enter or exit fast-freeze mode correctly; temperature control seems erratic.

Safety first: Unplug the freezer before removing the control panel. Do not spray liquids directly onto electronic components.

Step-by-step checks:

• 1. Check for stuck buttons: Gently press each button on the control panel. If any button feels stuck, does not click, or remains depressed, it may be causing a constant input.
• 2. Dry the panel: If condensation or a spill has reached the panel, remove the control housing and allow it to dry completely for several hours in a warm, dry place. Do not use high heat.
• 3. Inspect ribbon cable: Examine the flat cable between the keypad and the display/control PCB for cracks, kinks, or corrosion at the connector. Reseat the cable.
• 4. Clean contacts: If accessible, gently clean the keypad connector contacts with isopropyl alcohol and a lint-free swab.
• 5. Replace user interface: If E7 persists and specific buttons do not respond or trigger random actions, replace the user interface PCB or keypad assembly as a unit.