Hi and welcome to JustAnswer,
Im so sorry that no one else has responded to you.
Apologies for my delay in replying, I only just came online and saw your question. Are you still looking for help with this?
Have you try to check the door there is a sensor there and make it sure it is properly aligned and clean.
I'm just following up with you to see how everything is going. Did my answer help?
Let me know,Chester