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Forums13
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Apr 9th, 2026
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Joined: Jun 2020
Posts: 7
stranger
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stranger
Joined: Jun 2020
Posts: 7 |
Need a Hand on a 211 if anyone can help that would be greatly appreciated. Car is now stuck on NAV mode. here is step by step what happened. doing a pressure test. once done was at the bottom floor, cycled power and after power up car is now stuck on NAV, (Not Available), Car was in operation before the test. there was no logged faults. spoke to a buddy of mine saying that some random times if power was shutoff while car was at bottom floor the car will get lost and to bring it to the middle of hoistway on inspection, reset and let the car find itself. this all seemed weird, as the no matter what floor zone i was in it would level into that floor and the PI would be correct. is there a way to get out of this mode. Not sure anyone has seen this specifically but any help would be awesome. Do have the Blue tool. Went through pretty much everything but im still reading through manuals to see if i missed something.
thank you
Jdiggiddy
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Joined: Dec 2015
Posts: 1,766 Likes: 11
ElevatorPractitioner
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ElevatorPractitioner
Joined: Dec 2015
Posts: 1,766 Likes: 11 |
You do have safe right? C LED is lit. They will say NAV with safe open. Like if the stop switch gets flipped on the IOBD.
And not sure if the car would say NAV but I’d make sure there isn’t a conflict of inspection inputs like TCIC, TCI, IIS, MIS.
Last edited by Indirtwetrust; 04/30/21 06:32 PM.
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Joined: Dec 2011
Posts: 317
Mechanic
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Mechanic
Joined: Dec 2011
Posts: 317 |
This may sound dumb, but is it a soft start or contactors? I once had the overload trip while doing this and it threw me off.
Last edited by beaupeep; 04/30/21 08:01 PM.
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Joined: May 2015
Posts: 71
journeyman
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journeyman
Joined: May 2015
Posts: 71 |
I have been hearing about more instances of Otis equipment losing eeprom . On 211 it's the chip that holds parameters, U26. If you rule out normal elevator problems, it may be a bad memory location on chip.
If this is the case you will have to get a chip burner, and possibly making copy of a similar working elevator, check all parameters, etc.
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Joined: Nov 2019
Posts: 6
stranger
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stranger
Joined: Nov 2019
Posts: 6 |
Will car work from car top inspection? Is it a Twin post or single cylinder jack?
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Joined: Jan 2014
Posts: 132
member
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member
Joined: Jan 2014
Posts: 132 |
did you do a clo cl1 cl2 reset
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Joined: Mar 2024
Posts: 2
stranger
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stranger
Joined: Mar 2024
Posts: 2 |
What was the resolution of this? I am having this issue right now. Can run all day on inspection but says NAV on normal. My OCSS status is NAV but my MCSS status is IDL. Fuses are good, safety circuit is good.
Last edited by smithereens; 03/07/24 12:27 AM.
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Joined: Jun 2017
Posts: 118
member
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member
Joined: Jun 2017
Posts: 118 |
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Joined: Mar 2024
Posts: 2
stranger
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stranger
Joined: Mar 2024
Posts: 2 |
Yes iv cleared both pf and sac ram multiple times and done clro clr1 clr2 clears.
The only time I get an error is if I stop at a floor on inspection I get an FLRP error. Iv changed the selector board and the IO board.
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HW PM
by Chris, January 13
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