Home Forums General Discussion Technical Questions Otis Hydro-Fit (hydro MRL) taking SOME HALL CALLS

Been servicing a few of these Otis Hydro fit MRL hydro’s.

Last week an elevator went down after a power outage in the area. When i turned the elevator on the car was stuck on fire service and no matter what I did it would not reset of phase 1 recall. I tool all the smokes, and fire wires out put some bypass jumpers and still the car wouldn’t come off fire service. I used the handheld and changed the fire code from (32 not even on my list for what code so I assume local code) to 28 as per my manual. Car reset off fire service no issues. I tested the car and it ran fine/ still runs fine. I put the fire code back to 32 and tested the fire, smoke contacts and it worked. So, I thought the system glitched out, tested the call and it ran fine, took car halls and I know 1st floor hall call…didn’t notice the 2nd or 3rd floor hall calls were working or not.

Fast forward 2 days they call and say the 2nd and 3rd floor of this 3 stop elevator not taking hall calls. Car will take car calls; go to the floor no issues just won’t take hall calls (up/down at 2 or down at 3). i replaced the buttons and hall boards but it didn’t work. it will take a call for the 1st floor HALL (terminal lower floor) NO OTHER HALL CALLS.

anyone have any suggestions? I confirmed all parameters are correct and even checked them against another elevator in the building (they have (2) simplex elevators) that are identical

Hi Mate, have you checked your security IO settings [card reader security] - is is possible that a few of these have become corrupted due to the power outage.

Checked all the IO settings and even went as far to verify a 2nd time based on the other simplex in the building. Both elevators (simplex) have the exact settings.

Did you check the CUDE masks? If that’s good, use the IO test feature in OCSS and have someone push the hall button while monitoring that input to see if it’s firing.

Did you address the RS boards correctly?

Yes confirmed all that stuff



yes, even adressed top floor as bottom floor to test everything and when I did so the elevator did infact go to the top floor but thought it was at 1st floor. This confirmed that all the wiring, RS board and buttons are working properly.

This lead to me swapping the I/O board with the other car (building has (2) simplex elevators that are the same) and the problem went with the board. This confirmed that the main I/O board is bad.

Waiting on approval to pull the board and send it in for repair. \

Seems like a programming issue… Did you try Recalculating the CRC and verify the hall button IO’s under M-1-3-2?

I agree with Hex, I doubt it is the board. try clearing DEC, M-1-5-4, also PF RAM M-1-5-1. If that doesn't work I would try what Hex says, recalculate the CRC in MCSS & OCSS. when you swapped I/O boards did you also swap the GECB?

Yes I cleared the DEC, PF and recalculated CRC in both MCSS and OCSS.

The hand held is not seeing any hall call other then 1st floor.

Yes I did swap with the GECB

Dont know if I mentioned this but this started after a power issue in the building. When we found the car is was stuck on Phase 1 recall and the only way we got it off was going in and changing the fire code. After that we set the fire code back to what it was. The car ran fine from the car and 1st floor but the 2nd and 3rd floor hall buttons arent working. We know its not a wiring. Swapped the IO with the GECB and the problem swapped with it. We cleanered all the faults, ram and even recalculated CRC in both.

Did you watch the IO’s when someone pushed the hall buttons? And if you force the outputs on does it fire the hall button lights?

I feel like it’s a parameter issue. If your fire code parameter changed after the power blip then something else did. There are a few items I’d check but too many to list completely 😂.

M-1-3-1-9 RISER
M-1-3-1-2 TOP
M-1-3-1-7 EN-HCR
M-1-3-3-1 (Verify the CUDE masks for each landing)

Hall button IO’s 1848, 1849, 1928,1929 etc.

Fire a hall call via the service tool and see if the car responds.

Did you swap the E2P when swapping the GECB

M-1-3-1-9 RISER (M-1-3-1-1 riser = 11100000)
M-1-3-1-2 TOP (Top = 3)
M-1-3-1-7 EN-HCR (EN-HCR= 0)
M-1-3-3-1 (Verify the CUDE masks for each landing)
01=11000000
02=11100000
03=10100000


1847 = 4-1
1848 = 5-2
1928 = 5-1
1929 = 6-1


***Handheld tool will not take/latch hall call either**

and I tried all the resets

Well those all look appropriate. Is there an EMS in play by chance? I’d still like to see the M-1-2-1-3 set it to 5-1 and have someone push the hall button and see if you’re seeing the input.

Could wire in an RS board with buttons in the MR also.

I cannot think of anything else as to why the bottom hall button would function but not the rest. Especially if swapping the IO board fixed it.

When I swapped the IO baord it still had the GECB attached. I was worried that something would be messed up (like tac32 and UIT is coded per car). We just got the IO board back and they are saying that NO ISSUES FOUND wiht the IO board!

I checked those Addresses on the handheld and everyhting matches the job perfectly, and even checked against the other car and everyhting is the exact same.

Not sure where to go from here other then getting a new GECB board.

Swap running car E2 into the GECB from bad car. Not surprised IO board is fine, still sounds like a parameter or IO to me. it will be difficult to figure out without the IO sheets....

Post what the OCSS inputs are, that might shed some light for us.

Does this job have card readers at the hall stations?

Couple of options but at this point I’d be wiring in a RS station and button into the datalink in the MR.

Could also get an OMU and just copy the good car and upload to the problem car. Assuming you have an IO or parameter issue but there are so many to check. Best is as Tayto said go line by line vs job sheets or other car.

Thank you both. So, I did in fact go through every single IO line by line (and even went to the other running car and did the same) everything is identical!!! I ended up getting a new GECB board from Unitec (but they didn’t program it). We installed the new GECB board and using OMU we copied the front car information and loaded on the rear problem car. If you have any OMU info you are willing to share, I would gladly message you my email because the info on OMU is hard to find.

I was able to "manually load" and backup onto my OMU.

this got the car running. When I put back in the old GECB board and tried to also "manual load" even after several attempts it would not respond to 2nd or 3rd floor HALL calls. Something is going on with that GECB board but the new board and the OMU worked. THANK YOU

EVERY IO was the exact same and correctly set ON BOTH CARS. Checked twice!