Liebherr No Power / Main Supply Failure

Induction cooktop does not power on at all (no lights, no display)

Safety Warning

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

Tripped circuit breaker, Loose or burnt terminal block, Blown internal fuse, Defective main control board

How to Fix / Troubleshooting

Safety first: Before opening any panels, switch off the circuit breaker and verify absence of voltage.

User checks:

Check the household breaker or fuse for the cooktop circuit and reset/replace if tripped or blown.
Confirm that other appliances on the same circuit are working.

Technician checks:

Access the cooktop terminal box and verify correct voltage at the input terminals.
Inspect the terminal block for heat damage or loose connections; repair or replace as needed.
Check any internal fuses on the main control board and replace with identical types if open.
If supply and fuses are good but the unit remains dead, replace the main control/power board.

Repair Difficulty

Hard 4/5

Required Part

Main Power Control Board

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