have a 3 car group of traction mrl's building shut down power to 1 car to do some work to lobby floor, when they turned it back on, it would not run, and the pi says 16. only 6 floors, it also did something to one riser of hall buttons, they will not work, and also only 1 car will answer the other riser hall buttons. mechanic removed the xg3 connector from bad car, and now the other 2 cars will answer the one good riser. if he plugs it in again, only one car will answer riser. here is the faults that he is getting,
1402 1403 1404, to 1416 and again 2402,2403 to 2416, he also indicated that a board that is installed on the front of the controller, has a led that said "change board" not sure what board that is, any way he was able to reset that, and it went away, however if he pushes on the board, the led "change board will come on again"
not to familiar with these controllers, and we are lucky to get 2 cars running,
any ideas on what i should do? I saw Lon down load and learn in the parameter section, but since I'm to sure of what the actual problem is, i was reluctant to try.

Not an expert on these but they are known to lose parameters with power issues. Our tech support suggests archiving the EEPROM or recording all parameters, they also have a bulletin on installing a delay on timer feeding the XM16 plug to allow power to stabilize and any time you cycle power, XM16 should be out until power is back on.

I would compare every parameter to the other cars, especially the car # in group. I fact I once had only one car answering calls in a duplex and the car # in group was right but changing it, cycling power, then changing it back and cycling power fixed the problem as if it could not recognize the parameter value.

On the other hand, a change board LED coming on when you push on the board is a bad sign, sounds like a bad solder joint or something.

This is a common mistake with the Dallas chip, replace the chip and write the parameters again, you got 3 cars ,good luck.

If memory serves those faults sound like no comm to floor controller boards and each fault will tell u which one isn't seen,the board on the CPU is the gateway board and daisy chains to each controller gives u group communication xg3 plug.sounds like bad gateway board,u could try Lon download 5-7-2 on inspect which forces every node sometimes u have to do it a couple times as for 16 floors that car might need a shaft setup 5-2-1 but if u unplug one car the last gateway needs the terminal resistor I can look at my fault codes tomorrow don't have them with me.

so as low oil suggested, i did a lon download, hall calls came back up, i then had to do a shaft setup, on the shaft set up, i took it to bottom floor, wit 30u on as it indicates, but after setting 5-2-1, and switching back to normal, the door would power close, make up the locks, and gate, then it would open the door, i tried same process at least a dozen times, and finally the door powered closed made up locks and started and completed shaft learn. after the learn, we were able to get the car running, however now the one riser that has 2 cars on that side would only answer that riser, the other riser would only call the car that was on that riser side. it was like they were a duplex and a simplex.
anyway we ended up turning off the power on the car that caused all the trouble to begin with to check something, and when we turned it back on, it went back to the original problem, hall riser dead, no nodes learned, and car says its on 16 when only 6 floors,
now the problem is we can do the lon download, but for the life of me i cannot get it to start the learn run, now it will power door closed, and make up locks, and just sit there, it will not start the learn run. another strange outcome is the only car that is running, if we leave the xg3 connector in the bad car, it will cause the only good car to start overshooting floor. car will come up and stop a couple inches hi and open doors, it will continue to run, but acts really strange. unplug xg3 and car runs fine. ugggg dam Kone cars.

Try swapping the gateway board on the bad one to a different car to see what happens,and the shaft setup the car needs to be just a fuzz above the bottom 161 with 61u and 77n 30 on.i had a couple that were tricky,had to pull xm16 put it back in then flip to auto try bypassing doors,I highly suspect gateway and fcb.i put in many of these units and everyone was a learning experience

1402-lce can't see 2nd floor fcb 1403-3rd the 2402s are rear side and so on ,shaft setup must!!! Have doors and hall calls inhibited on cpu

Sometimes wonder how customers put up with having their elevators out of service for weeks and months at a time while their contractor tries to figure out how to fix them.

Well did u throw any boards at this thing?

Its oil and grease account. I have very limted knowledge of this equipment
We told them to contact kone. Could not justify wasting there money on boards that may or may not be a problem. Would be easy to spend 10 grand on boards and time and not have a running group. Oh well cant fix them all

U could try swapping those gateways boards for different results and the fcbs,the faults say ur not seeing 2,3,4 floors,do u have rear entrances?change a board from a good car with the bad then Lon download them I'd try the shaft setup again those CPUs can take a dump.If u can spend the time don't be afraid to move boards around.

The PI showing 16 is the clue. You have lost some parameter settings (probably due to some problem with main incoming supply). Only solution is to reinstate all parameters to correct values.
Have had this scenario happen a few times in the past.
Shaft set up requires 61U and 30 led's on and 61N off make sure safety input led lights when you turn RDF to normal to begin set-up drive. Does this elevator have 1 COP or 2 COP's?