Z moves, and the Z-max endstop is low. If they are all wired the same, my guess is that your firmware still has remnants of a Cartesian configuration in the Z-tower configuration that need to be corrected to match the X and Y towers. The usual suspects are that the Z speeds are set to 10% of the X and Y, one or more endstop settings are inverted, the travel direction setting on one or more axis is inverted, etc. Fix this first, and upload a new image to your board.
Once you get the new firmware loaded and with the printer powered off, disconnect the stepper motors (or remove the belts), move the carriages to mid-point on the verticals, and power up the board. With nothing touching the endstops, they should all read L when you do an M119. Now, press/hold the X endstop, and type M119 with your other hand. Did X-max change to H? If so, repeat for Y and Z. If an endstop starts out H and changes to L when you press it, you need to invert the endstop in firmware or else swap the wire on the switch from the NC terminal to the NO terminal (or vice versa). When all three are L when not triggered and change to H when you touch them, then your endstops are set.
With the endstops sorted out, power down the printer, and put the belts back on or plug the stepper motors back in. With the carriages still set at mid-point and a hand near the power plug, power up the printer and send it a home command if it doesn't auto-home. All three carriages should travel upwards to the endstops, "bump" off of them and move down a bit, and then move back up to the endstop again. If any carriage starts to move downward when you power on or send the home command, yank the power plug and either invert the direction of travel in firmware or pull the stepper motor plug from the board and turn it around 180 degrees (if it doesn't have a one-way keyed Molex connector that prevents it from going on backwards).
When you have the hotend mounted and are ready for calibration, Jay's video for manually calibrating a Delta printer on YouTube will show you everything.....
Once you get the new firmware loaded and with the printer powered off, disconnect the stepper motors (or remove the belts), move the carriages to mid-point on the verticals, and power up the board. With nothing touching the endstops, they should all read L when you do an M119. Now, press/hold the X endstop, and type M119 with your other hand. Did X-max change to H? If so, repeat for Y and Z. If an endstop starts out H and changes to L when you press it, you need to invert the endstop in firmware or else swap the wire on the switch from the NC terminal to the NO terminal (or vice versa). When all three are L when not triggered and change to H when you touch them, then your endstops are set.
With the endstops sorted out, power down the printer, and put the belts back on or plug the stepper motors back in. With the carriages still set at mid-point and a hand near the power plug, power up the printer and send it a home command if it doesn't auto-home. All three carriages should travel upwards to the endstops, "bump" off of them and move down a bit, and then move back up to the endstop again. If any carriage starts to move downward when you power on or send the home command, yank the power plug and either invert the direction of travel in firmware or pull the stepper motor plug from the board and turn it around 180 degrees (if it doesn't have a one-way keyed Molex connector that prevents it from going on backwards).
When you have the hotend mounted and are ready for calibration, Jay's video for manually calibrating a Delta printer on YouTube will show you everything.....