20 Most Recent AEG 23 in. 6410KF-N Electric Cooktop - Page 4 Questions & Answers

One of those razor blade scrapers works good for burnt on stuff on a glass cook top. It should work for what you have. Be sure you do it at a shallow angle so as not to scratch the glass.

The ER42 error code typically indicates an issue related to insufficient power being delivered to the ceramic element. Check Power Supply: Ensure that the cooktop is receiving adequate power. Verify that the power supply is stable and not fluctuating. Inspect the PCB (Printed Circuit Board): Since the error points to a fault on the PCB, visually inspect the control board for any signs of damage, loose connections, or burnt components. Capacitors: You mentioned that you've already changed the capacitors. While this is a good step, it's essential to ensure that the new capacitors are correctly installed with the same rating and polarity. Reset the Cooktop: Turn off the power to the cooktop completely. Disconnect it from the mains for a few minutes, then reconnect it and power it back on. Sometimes, a reset can clear minor glitches. No joy? Consider professional repair.