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Topic starter
12/01/2017 2:35 am
Working on an Otis E411 Last night had major power problems in the building .. I'm getting shutdown code 2854. SPT conn loss. Anybody have an advice ?
12/01/2017 3:35 am
24V/Door Zone Sensors Lost..
Topic starter
12/01/2017 3:50 am
Are those the position transducers ?
12/01/2017 11:52 am
SPT secondary postion transducer. loss of SOK input to mlb3 board. MLB3 board supplies 24 volts to cartop SPT unit. the wiring of the unit then sends the 24 volts back to the mlb3 board to verify 24 volts available at cartop unit. fairly simple to diagnose problem. look at print, possible blown fuse, bad mlb3 board, traveling cable etc. for some reason SOK input is not correct.
Topic starter
12/01/2017 2:49 pm
Working with No print.
Topic starter
13/01/2017 2:50 am
it was a bad board. Txs guys.
29/11/2022 5:21 am
Hi...
Friend, wich board was the failure?
Friend, wich board was the failure?