E7 error on induction cooktop, no heating on one or more zones.

Safety: Isolate power at the breaker before removing the glass top.

• Access coils: Remove the glass surface and locate the coil for the affected zone. Check that the coil is firmly mounted and its connector is fully seated on the power module.
• Inspect coil and wiring: Look for broken coil windings, burn marks, or melted insulation. Replace the coil assembly if any damage is found.
• Check harness to UI board: Ensure the communication cable between the user interface board and the power module is intact and properly connected at both ends.
• Swap connections (advanced): On some models, you can temporarily swap coil connectors between zones to see if the error follows the coil or stays with the module. This helps identify whether the coil or power module is faulty.
• Replace power module: If the coil and wiring are good, replace the zone's power module as a complete unit.