Inspect the digital input configured for external alarms (H11–H14) . Open door alarm

If you cannot access the product QR code, there are other avenues:

Getting this right ensures product quality and energy efficiency.

The Eliwell SB655 C is a powerful controller, but it is notoriously unfriendly to new users. By using this guide as your "best manual" companion, you can stop the alarm beeping, set the correct defrost schedule, and save hundreds of dollars in spoiled food or service calls.

This is where most users fail. The SB655 C has two programming levels: