G28 Z Forbidden

[daveonfire]

Hi all,

apologies if this has been posted before.

I purchased a GT2560 rev A+ control board from your Amazon shop however on installing this as a replacement to a defective board, and loading the marlin firmware I am getting a "G28 Z forbidden" message when truing to home the z axis also the Z position is displaying 5. when I enter a m119 Gcode I get the following result: X_min open, Y_min open, Z_min open. my printer is a Geeetech pruse i3 pro b with Bltouch auto bed level.

the marlin firmware is the latest and was working perfectly on my previous board.

[jzero42]

I think there is a way to clear the EEPROM memory in marlin - maybe some bad config values?

[Osmosisfiltrationsystem]

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