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I have installed the probe. Wenn I startup my printer (Anycubic i3 Mega) the Probe will extend en retracts 2 times. Red licht is burning. Wenn I do a G28 everythings homes. Wenn I do a G29 The extruder with probe will only go up. It looks like its probing but the z ax will go up. The probe is still burning red and the little pin will stay retracted. What can the problem be ?

When needed I can post an video of it.