U2 or over-voltage error appears; cooker may shut down to protect electronics.

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

Household overvoltage, Incorrect mains selection (on dual-voltage models), Faulty surge protection on PCB, Power spikes from unstable grid

Safety: Overvoltage can damage the appliance and pose a fire risk.

Step 1 – Verify mains voltage:

Use a multimeter or ask an electrician to confirm your outlet voltage matches the rating on the Klarstein multicooker label.

Step 2 – Avoid unstable circuits:

Do not share the outlet with heavy appliances (e.g., heaters, air conditioners) that can cause spikes.

Step 3 – Internal damage check:

If U2 appears repeatedly, inspect the main control PCB for burnt surge components (MOVs, resistors).
Replace the board if damaged.

Hard 4/5

Main Control PCB

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