BL Touch deploying when printer plugged in, but not with GCode

Tryptamine

I am using a legitimate BL Touch on a Duet Wifi, wired according to https://docs.duet3d.com/User_manual/Connecting_hardware/Z_probe_connecting
Wiring the BLTouch
Duet 2 Wifi without Expansion Board

When I run M401 nothing happens.
My deployprobe.g says M280 P0 S10

Running M280 P0 S10 directly, also nothing happens.

When I was using my printer the last time (like one year ago, back in FW 2.x) the probe was working. Now I got it to my new place, updated Firmware to 3.3 and the probe does not deploy.

I first thought some part of my wiring broke.
But when I plug in the printer's power, the probe deploys and retracts 3 times, so this is no electrical issue.

config.g

Help is greatly appreciated.

droftarts

@tryptamine If your BLTouch is wired as in the picture, the servo pin should be exp.heater3, not exp.heater4 as in your config.g. In config.g change the M950 line to:

M950 S0 C"exp.heater3"                             ; create servo pin 0 for BLTouch

Ian

Tryptamine

@droftarts you are a hero.