TwoTrees autofocus

[adot45 (David)]

I cleaned the soot and crud out of the end of the laser housing, put it back together and now when I try to focus by using the “$HZ” command I get this error:
$HZ

ALARM:9

Homing fail. Could not find limit switch within search distance. Defined as 1.5 * max_travel on search and 5 * pulloff on locate phases.

ok

Grbl 1.1 [‘$’ for help]

[MSG:‘$H’|‘$X’ to unlock]

[MSG:Caution: Unlocked]

ok
Does anybody have any ideas of what may have happened? Thank You

[parsec (FerAS)]

Check limit switch connection/work state.

[adot45 (David)]

Is that the Z limit switch that the probe rests on?