This error code implies that the unit is experiencing a door/key error. We recommend trying to clear it by unplugging the microwave or turning it off at the circuit breaker for at least 60 seconds. If the error code returns when plugging back in, please reach out to us via any of the following outlets and reference ticket number 1141406379 so we can see what we can do to get this resolved;
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Toll-free call (Mon-Fri: 9AM-6PM EST): 1-833-REVIEW8 (1-833-738-4398). We look forward to hearing from you. ^Lo