Ceramic hob shows Er03 and beeps continuously when trying to adjust power.

Safety first: Turn off the hob if there is a large spill to prevent it from reaching internal electronics.

• Clean the panel: Wipe away all liquid and dry thoroughly.
• Remove coverings: Ensure no items are resting on the control area.
• Reset: Turn off at the breaker for a few minutes, then restore power.

When to call a technician: Persistent Er03 with a clean, uncovered panel indicates a defective touch control board.