9751 Panel part set omit issue.

[Wacokid]

Hello to all,

 

I need to omit an upstairs PIR for a B part set, however I am unable to remove the "A" from the display giving me 0ab.

My command sequence is 04// 03 B X4

This means on "full set" the upstairs PIR is disabled leaving this area vulnerable.

 

Any and all answers appreciated.