We bought a building that has simplex 4008. Our panel has a trouble code for two heads that does
Not exist. What I think might have happened was they as a room where this were suppose to be located but they turned that room into outdoor patio, so my guess is they terminated this two detector but never deleted them of the panel. I have got password for all level acesss. My question is what is the option I need to choose to delete the two heads, I just do not want to go in there and start deleting stuff.