The panel lights up but ignores commands, only some keys respond, or the cooktop appears locked. Because cooktops combine high heat with high-current electrical parts—and some models also involve gas—the appliance type must be identified before service.
Common causes
- The control lock or cleaning mode is active
- Moisture, residue, or an object is covering the sensing area
- The touch interface or ribbon connection is failing
- The main control, low-voltage supply, or communication circuit has a fault
How the problem is diagnosed
The correct unlock procedure and surface condition are confirmed first. A technician then checks supply power, interface response, connections, error history, and communication with the power-control module. The full model number matters because reset and lock procedures vary.
This article applies to electric touch-control cooktops. The diagnosis and an upfront estimate are explained before approved work begins.
Information to prepare
Photograph any message, note which keys respond, and confirm whether the issue began after cleaning, a spill, or a power interruption. Keep the model and serial number available; they are often printed on the underside or in the installation documentation.
Repair or replace?
The decision depends on the failed control or element, parts availability, glass condition, installation access, and appliance age. A serviceable switch or cooking zone may justify repair, while cracked glass, unavailable electronic modules, or multiple heat-damaged components can make replacement more practical.
