Microwave shows E70 and may not respond correctly to keypad inputs.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Loose ribbon cable between keypad and control, Failed user interface board, Faulty main control board

Safety first: Unplug the microwave.

Steps to try:

Power reset: Leave unplugged for 5–10 minutes, then restore power.
Inspect connections (if comfortable): Remove the top grille and gently pull the control panel forward. Reseat the ribbon cable from the keypad to the control board.
Test operation: If E70 persists, the user interface or main control board may need replacement.
Technician recommended: Have a Café technician diagnose which board is faulty and replace it.

Hard 4/5

User Interface Board

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