Openhab App & KNX & Controlling Itself

accumulator · January 31, 2023, 12:19pm

hi Everyone,

Ive been using Openhab 2.5 for a while 3 years without any problems, as an interface to connect Alexa (voice commands) to control my KNX system, which controls lighting and heating. I have a Viessman KNX gateway to the boiler, and I can use use the Openhab android app to control the Central Heating Set Point, and also the Hot Water temperature. I do have visulization KNX panel inside the house, which does the same thing really, but it is directly wired onto the KNX bus. I dont adjust them much, as they usually stay on 21 degs for Central Heating and 55 degs. Recently, say hte last couple of weeks, all of a sudden, sometimes its late a night, the Hot Water receives a command (looking at the logs) to raise the DHW temp to 75 degs and CH the set point to 25deg. I quickly then open the openhab app and adjust them back to 21 and 55 degs. I have it once, where light at night say 1.00am in the morning its turned all the lights on in the house, all of sudden. I thought first of all, someone may have hacked the system, either via Alexa account or Openhab account. I then thought it might be fault with the openhab app, as I thought it did it, as soon as I used the app remotely. I reinstalled the app, and cleared the cache, and it was fine for a week, but last night it did it again, out of nowhere at 1.00 am in the morning the DHW temp was raised to 75 deg and CH set point temp set to 23 degress. On the logs it shows as follows:

2023-01-31 01:01:33.334 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 74.0
2023-01-31 01:01:33.407 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 74.0

2023-01-31 01:01:47.638 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 22.0
2023-01-31 01:01:47.668 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 22.0
2023-01-31 01:01:47.696 [vent.ItemStateChangedEvent] - Heating_Set_Point changed from 23.0 to 22.0
2023-01-31 01:01:47.860 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 21.0

Any ideas, where this command has come from? What does [ome.event.ItemCommandEvent] mean? Has this come from Openhab via the app?

It also looks like it did it earlier in the night as well:

2023-01-30 23:19:26.714 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 21
2023-01-30 23:19:26.848 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 21
2023-01-30 23:19:26.892 [vent.ItemStateChangedEvent] - Heating_Set_Point changed from 20.0 to 21
2023-01-30 23:19:26.899 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 22
2023-01-30 23:19:26.946 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 22
2023-01-30 23:19:26.971 [vent.ItemStateChangedEvent] - Heating_Set_Point changed from 21 to 22
2023-01-30 23:19:27.062 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 22
2023-01-30 23:19:27.085 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 22
2023-01-30 23:19:27.201 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 23
2023-01-30 23:19:27.232 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 23
2023-01-30 23:19:27.247 [vent.ItemStateChangedEvent] - Heating_Set_Point changed from 22 to 23
2023-01-30 23:19:27.358 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 24
2023-01-30 23:19:27.383 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 24
2023-01-30 23:19:27.397 [vent.ItemStateChangedEvent] - Heating_Set_Point changed from 23 to 24
2023-01-30 23:19:27.518 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 25
2023-01-30 23:19:27.542 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 25
2023-01-30 23:19:27.562 [vent.ItemStateChangedEvent] - Heating_Set_Point changed from 24 to 25
2023-01-30 23:19:28.185 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 24
2023-01-30 23:19:28.212 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 24
2023-01-30 23:19:28.230 [vent.ItemStateChangedEvent] - Heating_Set_Point changed from 25 to 24
2023-01-30 23:19:29.064 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 23
2023-01-30 23:19:29.128 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 23
2023-01-30 23:19:29.147 [vent.ItemStateChangedEvent] - Heating_Set_Point changed from 24 to 23
2023-01-30 23:19:30.276 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 56
2023-01-30 23:19:30.318 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 56
2023-01-30 23:19:30.348 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 55.0 to 56
2023-01-30 23:19:30.442 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 57
2023-01-30 23:19:30.464 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 57
2023-01-30 23:19:30.481 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 56 to 57
2023-01-30 23:19:30.600 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 58
2023-01-30 23:19:30.635 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 58
2023-01-30 23:19:30.669 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 57 to 58
2023-01-30 23:19:30.772 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 59
2023-01-30 23:19:30.791 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 59
2023-01-30 23:19:30.806 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 58 to 59
2023-01-30 23:19:30.948 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 60
2023-01-30 23:19:30.970 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 60
2023-01-30 23:19:30.983 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 59 to 60
2023-01-30 23:19:31.104 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 61
2023-01-30 23:19:31.138 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 61
2023-01-30 23:19:31.161 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 60 to 61
2023-01-30 23:19:31.269 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 62
2023-01-30 23:19:31.289 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 62
2023-01-30 23:19:31.303 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 61 to 62
2023-01-30 23:19:31.412 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 63
2023-01-30 23:19:31.429 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 63
2023-01-30 23:19:31.441 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 62 to 63
2023-01-30 23:19:31.588 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 64
2023-01-30 23:19:31.605 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 64
2023-01-30 23:19:31.620 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 63 to 64
2023-01-30 23:19:31.750 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 65
2023-01-30 23:19:31.768 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 65
2023-01-30 23:19:31.781 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 64 to 65
2023-01-30 23:19:31.942 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 66
2023-01-30 23:19:31.978 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 66
2023-01-30 23:19:32.001 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 65 to 66
2023-01-30 23:19:32.092 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 67
2023-01-30 23:19:32.110 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 67
2023-01-30 23:19:32.122 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 66 to 67
2023-01-30 23:19:32.254 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 68
2023-01-30 23:19:32.272 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 68
2023-01-30 23:19:32.287 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 67 to 68
2023-01-30 23:19:32.411 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 69
2023-01-30 23:19:32.430 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 69
2023-01-30 23:19:32.447 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 68 to 69
2023-01-30 23:19:32.586 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 70
2023-01-30 23:19:32.603 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 70
2023-01-30 23:19:32.617 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 69 to 70
2023-01-30 23:19:32.734 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 71
2023-01-30 23:19:32.750 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 71
2023-01-30 23:19:32.764 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 70 to 71
2023-01-30 23:19:32.939 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 72
2023-01-30 23:19:32.971 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 72
2023-01-30 23:19:32.995 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 71 to 72
2023-01-30 23:19:33.084 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 73
2023-01-30 23:19:33.100 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 73
2023-01-30 23:19:33.115 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 72 to 73
2023-01-30 23:19:33.251 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 74
2023-01-30 23:19:33.269 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 74
2023-01-30 23:19:33.284 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 73 to 74
2023-01-30 23:19:33.434 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:33.457 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:33.470 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 74 to 75
2023-01-30 23:19:33.620 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:33.641 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:33.800 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:33.845 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:33.956 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:33.990 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:34.144 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:34.161 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:34.322 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:34.338 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:34.445 [vent.ItemStateChangedEvent] - Middle_Bed_Current_Temp changed from 20.48 to 20.400000000000002
2023-01-30 23:19:34.505 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:34.530 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:34.696 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:34.713 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:34.862 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:34.893 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:35.047 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:35.080 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:35.210 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 75
2023-01-30 23:19:35.246 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 75
2023-01-30 23:19:38.623 [ome.event.ItemCommandEvent] - Item 'Boiler_Operation_Mode' received command 3
2023-01-30 23:19:38.654 [nt.ItemStatePredictedEvent] - Boiler_Operation_Mode predicted to become 3
2023-01-30 23:19:38.675 [vent.ItemStateChangedEvent] - Boiler_Operation_Mode changed from 4.0 to 3

Any help would be much appreciated?

Many thanks

binderth · January 31, 2023, 1:29pm

That means only, that the item got an Update. It does not state, where from.
There’s two possibilties:

from within openHAB (rules, UI, App, … via REST API)
from outside openHAB (aka KNX telegram)

So I would check

all your rules (or if someone clicks on an item)
all your KNX thermostat or different actuators which are connected to the items’ GAs.

maniac103 · January 31, 2023, 2:29pm

To add on what @binderth said, you can check the app log (go to app settings and scroll to bottom, then open the log from there). If it sends commands, it’ll log that there:

01-31 15:27:02.271 11534 21317 D WidgetAdapter: Command 'OFF' was sent successfully to https://demo.openhab.org/rest/items/DemoSwitch
01-31 15:27:02.769 11534 11581 D WidgetAdapter: Command 'ON' was sent successfully to https://demo.openhab.org/rest/items/DemoSwitch

You can simply search for ‘command’ in the log.

accumulator · January 31, 2023, 2:54pm

Thanks, will check. Say if it was a voice command from Alexa, would that show up in the app log? I assume Alexa Openhab skill just controls the app directly, converting voice commands to commands via the app. I have no rules set for openhab, unless something has sneaked in there, and I need to check it, but the times it does it, seems to be arbitrary, and changes, sometimes its at 1.00 am in the morning, one time it was 2.00pm in the afternoon. I never really use the UI at all to control anything directly and have not got HABpanel set up either.

accumulator · January 31, 2023, 2:55pm

Thanks, see my reply below to Maniac 103

accumulator · January 31, 2023, 2:56pm

Thanks, just checked, the log only captures when you are using/logged in to?

maniac103 · January 31, 2023, 3:09pm

Sure, but the app won’t send any commands if it’s not open

accumulator · January 31, 2023, 3:40pm

Thanks, thats good to know, it cant be the app then which sending spurious commands then.

How can you tell if alexa is sending out spurious commands? I assume that the Alexa skill logs into myopenhab, and then controls its somehow?

binderth · January 31, 2023, 4:08pm

That’s simple test approach:

See, if something comes up in a logfile
See, if there’s a pattern and work towards the culprit
Turn off devices and observe the outcome

Ad1.
I don’t know if there’s an user accesible log for your amazon account regarding Alexa stuff. The amazonechocontrol binding surely logs stuff, but only if it reached openhab or originates from it
You could run a KNX log (busmonitor on your ETS, if you have one) and see what knx address the telegram originates from

Ad2.
If it’s at the same time every day or if some other (KNX) item/sensor reaches a threshold… you could then work with that

Ad3.
Turn off your alexa (completely, meaning all possibly alexa skills and routines and stuff)
Turn off your KNX visu/panel and see what happens

My 2cents: it’s coming from some kind of KNX logic. Thermostat, panel logic,… something you changed recently?

accumulator · January 31, 2023, 4:55pm

Thanks binderth,

I’ve always struggled with getting the bus monitor to work on my ETS 5.6, every time i’ve tried to use it, it says its not accessible via the KNX router but group address monitor works. Again you need to leave ETS running for it to log.

It never seems to be at the same time. It has done the same thing at 2.00pm in the afternoon and 1.00am in the morning. It has sometimes switched all the lights on as well. Really strange.

I will disable the Alexa Openhab skill on Alexa to see if it happens again

My 2cents: I think it might be the viessmann knx gateway to the boiler, which maybe failing and its getting confused and sending out commands to the boiler when it shouldnt be.

Many thanks

accumulator · January 31, 2023, 6:08pm

I’ve just logged into using the app, and its changed again, its set the hot water temp to 75 deg C and set point temp to 23, and changed the boiler mode to different setting. I think its the viessmann KNX gateway thats going wrong, must be!

accumulator · January 31, 2023, 6:13pm

Its weird, looking at the logs, it seems it has changed on the exact time I logged into the openhab app. It seems if I log into the app, it changes it

2023-01-31 18:04:20.162 [ome.event.ItemCommandEvent] - Item 'Boiler_Operation_Mode' received command 4
2023-01-31 18:04:20.201 [nt.ItemStatePredictedEvent] - Boiler_Operation_Mode predicted to become 4
2023-01-31 18:04:20.254 [vent.ItemStateChangedEvent] - Boiler_Operation_Mode changed from 3 to 4
2023-01-31 18:04:21.672 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 74.0
2023-01-31 18:04:21.706 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 74.0
2023-01-31 18:04:21.759 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 75.0 to 74.0
2023-01-31 18:04:22.645 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 73.0
2023-01-31 18:04:22.695 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 73.0
2023-01-31 18:04:22.749 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 74.0 to 73.0
2023-01-31 18:04:22.763 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 73.0
2023-01-31 18:04:22.787 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 73.0
2023-01-31 18:04:23.020 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 72.0
2023-01-31 18:04:23.036 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 72.0
2023-01-31 18:04:23.057 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 73.0 to 72.0
2023-01-31 18:04:23.140 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 72.0
2023-01-31 18:04:23.156 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 72.0
2023-01-31 18:04:23.376 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 71.0
2023-01-31 18:04:23.390 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 71.0
2023-01-31 18:04:23.410 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 72.0 to 71.0
2023-01-31 18:04:23.440 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 71.0
2023-01-31 18:04:23.462 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 71.0
2023-01-31 18:04:23.721 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 71.0
2023-01-31 18:04:23.735 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 71.0
2023-01-31 18:04:23.807 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 70.0
2023-01-31 18:04:23.837 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 70.0
2023-01-31 18:04:23.856 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 71.0 to 70.0
2023-01-31 18:04:23.960 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 70.0
2023-01-31 18:04:23.976 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 70.0
2023-01-31 18:04:24.149 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 69.0
2023-01-31 18:04:24.161 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 69.0
2023-01-31 18:04:24.178 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 70.0 to 69.0
2023-01-31 18:04:24.449 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 68.0
2023-01-31 18:04:24.472 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 68.0
2023-01-31 18:04:24.515 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 69.0 to 68.0
2023-01-31 18:04:24.519 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 68.0
2023-01-31 18:04:24.541 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 68.0
2023-01-31 18:04:24.735 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 67.0
2023-01-31 18:04:24.748 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 67.0
2023-01-31 18:04:24.780 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 68.0 to 67.0
2023-01-31 18:04:24.919 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 67.0
2023-01-31 18:04:24.933 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 67.0
2023-01-31 18:04:25.195 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 66.0
2023-01-31 18:04:25.210 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 66.0
2023-01-31 18:04:25.268 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 67.0 to 66.0
2023-01-31 18:04:26.186 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 65.0
2023-01-31 18:04:26.207 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 65.0
2023-01-31 18:04:26.256 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 66.0 to 65.0
2023-01-31 18:04:26.452 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 64.0
2023-01-31 18:04:26.467 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 64.0
2023-01-31 18:04:26.487 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 65.0 to 64.0
2023-01-31 18:04:26.583 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 64.0
2023-01-31 18:04:26.597 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 64.0
2023-01-31 18:04:26.769 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 63.0
2023-01-31 18:04:26.782 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 63.0
2023-01-31 18:04:26.802 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 64.0 to 63.0
2023-01-31 18:04:27.051 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 62.0
2023-01-31 18:04:27.073 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 62.0
2023-01-31 18:04:27.108 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 63.0 to 62.0
2023-01-31 18:04:27.242 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 61.0
2023-01-31 18:04:27.259 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 61.0
2023-01-31 18:04:27.276 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 62.0 to 61.0
2023-01-31 18:04:27.718 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 60.0
2023-01-31 18:04:27.730 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 60.0
2023-01-31 18:04:27.747 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 61.0 to 60.0
2023-01-31 18:04:28.413 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 59.0
2023-01-31 18:04:28.441 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 59.0
2023-01-31 18:04:28.478 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 60.0 to 59.0
2023-01-31 18:04:28.585 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 59.0
2023-01-31 18:04:28.596 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 59.0
2023-01-31 18:04:28.771 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 58.0
2023-01-31 18:04:28.792 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 58.0
2023-01-31 18:04:28.810 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 59.0 to 58.0
2023-01-31 18:04:29.326 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 57.0
2023-01-31 18:04:29.350 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 57.0
2023-01-31 18:04:29.382 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 58.0 to 57.0
2023-01-31 18:04:30.066 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 56.0
2023-01-31 18:04:30.081 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 56.0
2023-01-31 18:04:30.100 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 57.0 to 56.0
2023-01-31 18:04:32.748 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 55.0
2023-01-31 18:04:32.773 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 55.0
2023-01-31 18:04:32.797 [vent.ItemStateChangedEvent] - Hot_Water_Set_Point changed from 56.0 to 55.0
2023-01-31 18:04:33.074 [ome.event.ItemCommandEvent] - Item 'Hot_Water_Set_Point' received command 55.0
2023-01-31 18:04:33.088 [nt.ItemStatePredictedEvent] - Hot_Water_Set_Point predicted to become 55.0
2023-01-31 18:04:35.839 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 22.0
2023-01-31 18:04:35.866 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 22.0
2023-01-31 18:04:35.900 [vent.ItemStateChangedEvent] - Heating_Set_Point changed from 23.0 to 22.0
2023-01-31 18:04:36.856 [ome.event.ItemCommandEvent] - Item 'Heating_Set_Point' received command 21.0
2023-01-31 18:04:36.880 [nt.ItemStatePredictedEvent] - Heating_Set_Point predicted to become 21.0
2023-01-31 18:04:36.919 [vent.ItemStateChangedEvent] - Heating_Set_Point changed from 22.0 to 21.0
2023-01-31 18:05:11.524 [vent.ItemStateChangedEvent] - DHW_Current_Temp changed from 44.480000000000004 to 45.480000000000004
2023-01-31 18:05:21.608 [vent.ItemStateChangedEvent] - Kitchen_Current_Temp changed from 22.2 to 22.34
2023-01-31 18:05:44.860 [vent.ItemStateChangedEvent] - Middle_Bed_Current_Temp changed from 20.8 to 20.88
2023-01-31 18:06:24.864 [vent.ItemStateChangedEvent] - DHW_Current_Temp changed from 45.480000000000004 to 47.0
2023-01-31 18:06:41.609 [vent.ItemStateChangedEvent] - Lounge_Current_Temp changed from 19.84 to 20.0
2023-01-31 18:07:11.800 [vent.ItemStateChangedEvent] - DHW_Current_Temp changed from 47.0 to 47.480000000000004
2023-01-31 18:07:17.641 [vent.ItemStateChangedEvent] - Boiler_Temperature_Current_Temp changed from 75.0 to 74.48
2023-01-31 18:07:58.709 [vent.ItemStateChangedEvent] - DHW_Current_Temp changed from 47.480000000000004 to 48.480000000000004
2023-01-31 18:08:45.626 [vent.ItemStateChangedEvent] - DHW_Current_Temp changed from 48.480000000000004 to 49.0

binderth · January 31, 2023, 6:18pm

I don’t know the Viessmann KNX gateway, is it some kind of hardware, which connects the Viessmann boiler with KNX? Does it have any logic built into it?

Would be a good way:

setup the group monitor in ETS
open openHAB App
see what happens
3.1 you’ve got the origin KNX addresses of all telegrams
3.2 pick the telegrams changing the values of the Viessmann boiler
3.3 trace it to a hardware
3.4 if it’s repeatedly doing the same thing, try to figure out, how it’s parametrized within the ETS (if it’s the Viessmann KNX gateway, that is)

accumulator · January 31, 2023, 6:37pm

Its a gateway between the viessmann boiler bus (121) to KNX, you can adjust the CH set point temperature, the DHW set point temperature, adjust heating curves for weather compensation mode, change mode off the boiler, say all off, DHW on/ CH off, CH Norm temp/night mode. Report boiler flow temperatures etc. Its been working fine for 8 years, and say 3 to 4 years with openhab an alexa. Alexa is not set up to change any of the stuff on the KNX viessmann gateway, its either done the Visu panel KNX on the KNX bus or the openhab app.

maniac103 · January 31, 2023, 6:41pm

As I said, if the app sends commands, that is logged in the app log. Did you check it this time?

(Also, you said it also happened at 1AM…did you use the app at that time? )

accumulator · January 31, 2023, 6:42pm

Yes, and all it has is my commands to reduce it back down to 55 degs and 21 degs respectively. Weird!

accumulator · January 31, 2023, 6:44pm

I also worked backed through the logs and it started happening on 19 January this year. I noticed the openhab app on android was recently updated 7 days ago.

accumulator · January 31, 2023, 6:47pm

I didnt use the app at 1.00 am, I just heard the heating starting up with the pipes warning up/expanding! I then used the app to check the set points.

accumulator · January 31, 2023, 6:56pm

I will need to check the KNX Visu Panel, to see if that is sending out weird KNX telegrams, when it feels like it. There is some logic in the Visu Panel for control of a DHW recirculation pump, and light switches and there are time programs to change the KNX room thermostats to different comfort modes, and night mode.

accumulator · February 1, 2023, 9:10am

Hi Both,

I left the group address monitor running last night on the KNX system and at 00.14, there was a group address which is my KNX IP/router (one of the address the KNX allocates to it) sending out groupwrite commands. Not only did it adjust the DHW temp, CH Set Point temp, it turned on the external lights to the front entrance door and roof terrace.

2892	1/2/2023 00:14:12.124	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 15 78 | 56 °C			
2893	1/2/2023 00:14:12.262	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 15 91 | 57 °C			
2894	1/2/2023 00:14:12.410	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 15 AA | 58 °C			
2895	1/2/2023 00:14:12.567	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 15 C3 | 59 °C			
2896	1/2/2023 00:14:12.739	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 15 DC | 60 °C			
2897	1/2/2023 00:14:12.947	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 15 F5 | 61 °C			
2898	1/2/2023 00:14:13.072	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 16 0E | 62 °C			
2899	1/2/2023 00:14:13.270	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 16 27 | 63 °C			
2900	1/2/2023 00:14:13.397	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 16 40 | 64 °C			
2901	1/2/2023 00:14:13.563	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 16 59 | 65 °C			
2902	1/2/2023 00:14:13.756	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 16 72 | 66 °C			
2903	1/2/2023 00:14:13.883	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 16 8B | 67 °C			
2904	1/2/2023 00:14:14.052	from bus					Low	1.1.241		-	13/2/2007			DHW Temp Adj.	6		GroupValueWrite		9.001 temp… 16 A4 | 68 °C

So, from this it has got to be one of the following:

a) Openhab on PI is chucking out spurious commands
b) Alexa is chucking out spurious commands
c) Someone is getting access/hacking my KNX Ip/router and controlling it

As we confirmed yesterday its not the openhab app, as you need to be logged into it for it to send commands.

Which logs should I go to next?

Many thanks