Tue May 25 2021

Steris V116 S2 failed to engaged.

Hi all, i have a problem with my V116, S2 fail to engaged. i tried manual on/off from the menu but the light behind solenoid remain off. i look at the I/O board, led on D3 is on when i turned on S2 and went off when its off, but there is no 120V on coil. I check connection between coil and PCB behind I/O board and the result is solid. any input are welcome.

Report Post
Tue May 25 2021Reply from Ben C
Ben C

One of these companies may be able to assist:

iMed 

RPI   


Find me on FacebookLinkedIn, YouTube or Twitter 
 

Report Post
Tue May 25 2021Reply from Neil Blagman
Neil Blagman

1) try using another coil on the S2 valve - the fact that the coil led did not light may indicate a failure of the coil or circuit board built into the coil

2) if the new coil fails to light, try looking at the driver chip for this valve - it is U16 on the I/O PCB -  I believe it is replacable and has a part # of 129367-542

Hope this helps - if you need further info feel free to contact me directly at RPI  800-221-9723 EXT 1127


Report Post
Tue May 25 2021Reply from Bob@montaquip
avatar placemark

Yeah been through that. It sucks. Given your process so far:  if you have another machine nearby, swap the I/o board. Still happening?, swap coil with any other similar valve. Still happening?, the board in the back of control box whose technical name escapes me, the board you plug control and I/o into, must be the problem. I've got a bunch of used ones you could try, all good, doesn't matter the model/size only same era. Unfortunately I'm out of town for a few days. But if you have another 116 nearby you have what you need to troubleshoot, except the board I'm talking about, too much of a hassle. Back on Tuesday.  Good luck. 


Report Post
Tue May 25 2021Reply from Bob@montaquip
avatar placemark

Sorry, also because it's easy enough swap out the valve wiring harness, do so. 
 

Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth. According to Sherlock anyways. 


Report Post
Tue May 25 2021Reply from Cbet_Matt
Cbet_Matt

Did you check the fuses drivers  I/O boards? Do you have voltage at the coil?



Matt

 
Report Post
Wed May 26 2021Reply from Ardy
avatar placemark

Thank you all for quick responses.

@ Neil Blagman, replaced coil, swap I/O board with no luck.

@Bob, it's kind of puzzled me how to get to back of the board, any advice on how to remove that board?

@Cbet_Matt, there was no juice on that.

 

Is it possible the problem come from power board? or is it like Bob said the problem is on the back of I/O Board?

 

please advice  


Report Post
Wed May 26 2021Reply from Chris35
avatar placemark

The connector board in the back of the control box could be the problem, but are LS1 (door closed) and PS1 (door sealed) closed when you are trying to manually activate S2 in service mode? Also check continuity between coil plug and cannon plug on the back of the control box.

Did this problem originate during a cycle? What was the alarm / failure?


Report Post
Wed May 26 2021Reply from Jeff_EBS
avatar placemark
I was going to suggest the triac on the board, bit I see that was already suggested

Report Post
Wed May 26 2021Reply from Bob@montaquip
avatar placemark

The back board is a major pain. It involves removing the entire control box. All the screws holding sockets etc. 

last resort kind of thing. I've only seen a few go bad since they were introduced in 90's.  But it's certainly possible. 
 

Sorry, did you check for voltage at valve. If no, did you check for voltage at pin socket in back of control box?. If no and output is lit, unfortunately it's probably the back board given that you've swapped out I/o. Make sure the I/o board is pushed all the way in and snapped into place. 
 

the replacement of the back board is a pain but not as bad as I'm making it sound. It's just a process disconnecting all the wiring harnesses etc. you don't necessarily have to remove mounting brackets

 

if it were me I'd start at the very beginning again and be sure I've eliminated all the easy stuff one last time, power at valve, power at socket, output lit.  Good luck. 


Report Post
Wed May 26 2021Reply from Cbet_Matt
Cbet_Matt

Do you have power to your boiler control? If so I'm not so sure you would have an issue with your mother board. Can you activate any solenoids for the service menu I/O control?



Matt

 
Report Post

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Please review our Privacy Policy for more details.
I Agree