While testing the EFO status, keep in mind that sometimes it is wired as a "breaking" contact. I.e. The input goes off to activate the EFO mode. If this is the case, then a crook rs card will set that input as active and place the system on EFO. I owe a late night hair-pulling session to an experience of this on a single lift mcb job.
Last edited by Bluehaze; 09/21/13 11:24 AM.