IDWT,

Had this one on a traction group. Turned out two inputs ISR, and ISRV something like that had failed and no cars would dispatch unless I brought one of the two down to the bottom terminal landing through a car call, then for reasons I couldn’t understand both cars came to life for hall calls. Everything looked normal as you described, but both cars were idle while every hall call was in. New software from MCE was the ticket (job was 9 years old). Other than that, EP fuse is good?