scs and keypad comms failures

[wexfordman]

Hi,

As expected, everything now working 100% from approx 8:30am ish.

[slychiu]

When this happens again, can you pull out the velbus rs485 submodule from the UCM/Velbus.

It may be the velbus  rs485 bus interfering with the comfort RS485 bus

[wexfordman]

Okay,
5Pm, and it appears to be down again, symptoms are
1) All keypads and scs switches are down2) No access to comfort app (can ping eth, but unable to log in)

 I will now disconnect the rs485 submodule from the ucm velbus.
Completed!
I also restarted main board and both ucm boards after removing the submodule
Still no access to keypads, scs or ucm eth (can ping it fine, but unable to log in).

I will now, disconnect the ucm velbus completely, and all tha ka/kb inputs to the main board, leaving just the ucm eth connected to the main board.
I will restart ucm eth and main board and then try to log in via cum eth
No access to ucm eth.

It seems to me, with just ucm and main board, I should be able to connect, everything else is completely removed from the system, its the most basic setup almost, just main board, ucmeth and lem.
Slychui,
Is there any possibility at all that the predictible times of failure point to some form of software or programming issue ?

 I can nearly set my clock by this. In fact a few days ago, I even offset the time on comfort to see if the schedule of the fault would move with it...and it didnt, which surprised me.
Regards,Eamon

[wexfordman]

Further update

I have a spare main board, althouh an older firmware version, so I upgraded the firmware and replaced the existing board for this one.

I reconnected everything and tested again, with no improvement, still locked out.

One thing to note, is that when this is happening, the one and only way I seem to be able to get any connectivity to the main board is via firmware upgrade with the two way uprade connected to the main board. Any other method, I just cant connect.

D9 and D10 are however flashing furiously on the ucm even when there is low/no activity, so it looks like the main board is sending a lot of info out the bus, even when there is little actual activity, unless this is it attempting to communicate with the other modules.

[wexfordman]

[user=1]slychiu[/user] wrote:

When this happens again, can you pull out the velbus rs485 submodule from the UCM/Velbus.

It may be the velbus  rs485 bus interfering with the comfort RS485 bus

Hi slychiu,
Please see post number 24 for results 
Thanks for help so far, struggling at this point to see where to go next.

[slychiu]

Its very puzzling. Can you confirm a few things? Please answer the following

1. The problem happens at around 5 PM every day but only when you turn on Velbus Relay channel 1? It does not matter if you change the time in comfort, ie it always happens at 5 PM even if you change the time in comfort?
   
2. The system recovers when you switch off the velbus channel 1 relay manually.?
   
3. If you turn on the velbus channel 1 relay manually and not by Comfort does it also happen? ie lose connection
   
4. when the problem happens, even if you disconnect all connection to the UCM/Velbus and keypads the problem still happens? and even if you change the whole comfort PCB. I cannot understand this at all because the system is now unrelated to velbus? am I understanding correct?
   

[wexfordman]

double post.

[wexfordman]

[user=1]slychiu[/user] wrote:

Its very puzzling. Can you confirm a few things? Please answer the following

1. The problem happens at around 5 PM every day but only when you turn on Velbus Relay channel 1? It does not matter if you change the time in comfort, ie it always happens at 5 PM even if you change the time in comfort?
   
2. The system recovers when you switch off the velbus channel 1 relay manually.?
   
3. If you turn on the velbus channel 1 relay manually and not by Comfort does it also happen? ie lose connection
   
4. when the problem happens, even if you disconnect all connection to the UCM/Velbus and keypads the problem still happens? and even if you change the whole comfort PCB. I cannot understand this at all because the system is now unrelated to velbus? am I understanding correct?
   

Hi,
1. Yep, around 5pm it starts, but I will double check this evening if the comms failure starts even without the velbus relay being activated (I disabled comms alarm a few days back as kept announcing on keypad).
2. Yes, when it starts first, I can get it to recover with almost 100% reliability. However, after a while, I do lose all comms and cannot get back in no matter what I do, but this is after I have done an amount of troubleshooting, so I am not sure if left alone what would happen.
3. I have been mostly turning the relay on manually, if when it is happening, i turn it on via app, or scs, I lose comms straight afterwards, and cant turn it off unless manually.
4. Yep, when I lose comms completely (which happens after a while and the velbus status makes no difference) I am completely unable to restore it no matter what I disconnect. I can bring the hardware config down to a bare miniumum, with just main board and ucm eth, and am unable to access comfort via phone or comfigurator. The phone sees the system, but is unable to login after I type the password, and comfigurator gives an unable to conenct to ucm message. I am then completely locked out until the following morning at about 9ish, when everything works 100% again.


ps:- Ignore the fact that I changed the time on comfort,I may have overwritten this when I downloaded a config file to it. Its worth noting though, that comfort sunrise and sunset times for today are 08:29 and 16:05

[wexfordman]

Everything came back in tis morning at about 8:30, the only difference was that the scs and keypads did not, but this was because they were not added as modules to the new board. Once I got comms back at 8:30ish, I scanned mor modules and added them, everyhting now working again.

I will leave all alone now, and see what happens over this evening. If things fail, I will not touch the config, or change anything, and leave the system work through. I will only try to log on to the system and use keypads etc.

Comfort time is also correct.

[Ingo]

This is indeed interesting... Have you tried to remove the heater and just put a lightbulb on there? If you disconnect the connection between the heater and Comfort, and switch the heater on manually, does it still do that? I am thinking maybe the heater itself is generating some mains interference which is somehow fed via mains into Comfort.

Ingo