Induction cooktop displays E07 and shuts off when high power is selected on multiple zones.

Safety first: This involves live electrical measurements. Only a qualified person with a multimeter should perform voltage checks. Always turn off power before tightening connections.

Steps:

• Verify dedicated circuit: Confirm the cooktop is on a dedicated circuit with the correct breaker size and wire gauge as specified in the installation manual.
• Check terminal block: Turn off the breaker, remove the junction box cover or rear access panel, and inspect the terminal block. Tighten all lugs to the manufacturer-specified torque. Look for discoloration or melted insulation.
• Measure voltage: With power restored, measure line-to-line and line-to-neutral voltages at the terminal block. Compare to the rating plate (typically 240 V or 208 V). Significant deviation can trigger E07.
• Correct wiring issues: If voltage is low under load, consult an electrician to correct undersized wiring, loose connections in the home panel, or overloaded circuits.
• Control check: If supply voltage is correct and stable but E07 persists, the main control/power module may be misreading input voltage and require replacement.

Warning: Never operate the cooktop on an incorrect voltage or with loose connections; this can cause arcing, component failure, or fire.