Quote: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
Hi Ingo,
Yes, I have removed the ac input to the relay, so the relay is in effect switching nothing, and the effect is the same. (there is an isolation switch which feeds the velbus relay for the boiler, and I simply turn this off). Its an oil burner, so the load itself isnt particularly high in any case.
Hmm... I was thinking maybe a marginal power connection on the boiler might be causing interference somehow but if you disconnected the relay and it switches \'open air\' and still does it then the problem is closer to Comfort. Any chance you have another velbus relay?
Quote:Hmm... I was thinking maybe a marginal power connection on the boiler might be causing interference somehow but if you disconnected the relay and it switches \'open air\' and still does it then the problem is closer to Comfort. Any chance you have another velbus relay?
The velbus relay is one of 4 on that module, its a vmb4ry, which has 4 relays. There is one \"bus\" from this, so all relays communicate to comfort on the same bus also.
The fourth relay was unused, I moved the heating over on to that yesterday to see if any change/impact, but too early to tell yet. The only thing is, that the fourth relay did not cause any problems on comfort, neither did the 2nd and third.
Personally, I am starting to think sometthing with the programming, the timing is too regular and consistent for it to be anything else, and as mentioned, I have now swapped out the entire main board, upgraded all firmare etc.
Quote: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.
It happens when you turn on the relay by Comfort, but if you start by turning it on manually, does it still cause a problem?
12-10-2014, 06:20 PM (This post was last modified: 12-10-2014, 06:20 PM by Ingo.)
So relays 2 and 3 work fine? Let\'s see if 4 works. Perhaps there is a spot of solder bridging the bus and one of the relay 1 contacts or perhaps the relay coil.
Quote: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.
It happens when you turn on the relay by Comfort, but if you start by turning it on manually, does it still cause a problem?
can you read the event log ?
Hi,
I can check that. It doesn\'t cause a problem right now though, all is working perfectly now.
Quote: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.
It happens when you turn on the relay by Comfort, but if you start by turning it on manually, does it still cause a problem?
can you read the event log ?
Hi Slychui,
Update this evening, is that all works fine all evening until the heating relay is activated. Activation of heating relay manually knocks out comms, and restores once the relay is turned off again, manually,
Note, the relay in question is now relay 4 on this vmb4ry, as I moved it the other day, so the problem seems to move with the load connected to it. This relay is not programmed in comfort either, so not mapped to a counter, so is \"invisible\" to comfort.
Relay 1 with no load, now has no impact when turned on or off manuall or via comfort.
Behaviour is certainly better though this evening, as I am able to restore comms simply by turning off the relay, which over the last few nights, did not always happen.
So, it would appear that the problem is related to the velbus relay, but it is very hard to understand why this is still only a problem between certain hours of the day, i.e I am gauranteed not to have a problem during daylight hours.
I should note, that today also, I disabled the sunset and sunrise responses in the miscelaneous comfort responses. Not sure if this has a direct impact or not.
12-11-2014, 04:08 AM (This post was last modified: 12-11-2014, 04:09 AM by wexfordman.)
Slychui,
Enclosed is a copy of the monitor taken when I manualy activated relay 4 (heating relay) that caused the comms to knock out.
Again, this relay 4 is not mapped to comfort, comfort cannot see it, and cannot control it. It was a spare relay up until I moved the heating from relay1 to relay 4 of this board.
Thanks
Eamon
Oops, sorry
Didn\'t reset comfort last night as all I needed to do to restore was turn off the relay. On previous evenings I reset comfort when I was completely locked out and it made no difference.
Will try the suggestion about turning it on before the expected time to see if it is an exact time that the problem occurs.
