Induction cooktop shows E18 and one or more zones cannot detect pans reliably

Safety first: Disconnect from mains before any internal checks.

• Verify cookware and position: Use flat, induction-compatible pans and center them on the zone. Avoid very small pans on large zones.
• Check glass and coil alignment: Remove the cooktop and ensure the induction coil is correctly centered under the glass markings and firmly fixed.
• Inspect wiring: Reseat the coil connectors on the power module.
• Board replacement: If E18 persists with correct pans and alignment, the detection circuit on the power module may be out of tolerance and the module should be replaced.