Is your probe blinking? If the bed was too close to the probe when it was turned on will cause the light on the probe to blink.
To Reset your sensor probe-
Your 3d printer will now home and automatically reset your probe light.
Article ID: 7
Created On: Sun, Dec 10, 2017 at 7:20 PM
Last Updated On: Sun, Dec 10, 2017 at 7:20 PM
Authored by: Shelley Warner [firstname.lastname@example.org]
Online URL: http://gorillamaker.knowledgebase.co/article.php?id=7