A yes strange things happen indeed.
Well after changing the PIC last year I incidently had WDT resets that needed to be reset by resetting the PIC.
Honestly I did not look at my logs either as I thought hey... no warning no problem.
Recenthly I had the yearly inspection so I disconnected the OTGW (I've used RCA plugs as connectors so that is an easy job) as most of these guys just don't like external equipment being connected.
It might interfere with their work. And they give me some examples that I can imagine.
He cleaned the whole installation and did not see any obvious problems.
After completion of his work I showed him what the OTGW could do and he was amazed by the graphs.
The next day I started to witness WDT resets again. Not once every x weeks but now back at 7 WDT PIC resets a day.
But it is getting colder outside as well. Still no clue why this happens. The automatic PIC reset does bring the device back on line.
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2018-10-05 12:26:40.659 Status: User: Admin initiated a switch command (75/OTGW Reset/On)
2018-10-05 12:26:41.882 Status: User: Admin initiated a switch command (75/OTGW Reset/Off
My Domoticz log shows a working OTGW with data ... then it says WDT reset.
I connect domoticz to the OTGW via Ser2net, that could be a connection renewal issue. (
Port already in use)
As domoticz does not receive valid data it will reset the 'hardware device within domoticz'
After a pic reset by domoticz as described above
Reset/On, most obvious the ser2net connection is killed and can be successfully rebuild -> I receive data again.
I could try experimenting what will happen if I don't have Domoticz reset its hardware device. Maybe I just notice a WDT Reset,,, but the PIC does not need the reset. I'll let you know,
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2018-10-05 12:17:44.565 (GW OpenTherm) Thermostat (DHW Setpoint)
2018-10-05 12:17:44.576 (GW OpenTherm) Thermostat (Max_CH Water Setpoint)
...
2018-10-05 12:18:04.519 Status: OTGW: OpenTherm Gateway 4.2.5
2018-10-05 12:18:04.519 Status: OTGW: WDT reset!
..
2018-10-05 12:19:00.136 Error: GW OpenTherm hardware (11) nothing received for more than 1 Minute!....
2018-10-05 12:19:01.137 Error: Restarting: GW OpenTherm
2018-10-05 12:19:01.546 Status: OTGW: TCP/IP Worker stopped...
2018-10-05 12:19:03.551 Status: OTGW: connected to: 192.168.**.**:****
2018-10-05 12:20:30.007 Error: GW OpenTherm hardware (11) nothing received for more than 1 Minute!....
2018-10-05 12:20:31.008 Error: Restarting: GW OpenTherm
2018-10-05 12:20:33.578 Status: OTGW: connected to: 192.168.**.**:****
2018-10-05 12:20:33.578 Status: OTGW: Port already in use
2018-10-05 12:20:33.579 Status: OTGW: Connection reset!
2018-10-05 12:20:33.579 Status: TCP: Reconnecting in 30 seconds...
2018-10-05 12:21:30.007 Error: GW OpenTherm hardware (11) nothing received for more than 1 Minute!....
2018-10-05 12:22:00.623 Error: GW OpenTherm hardware (11) nothing received for more than 1 Minute!....
2018-10-05 12:22:01.640 Error: Restarting: GW OpenTherm
2018-10-05 12:23:30.694 Error: GW OpenTherm hardware (11) nothing received for more than 1 Minute!....
2018-10-05 12:23:31.694 Error: Restarting: GW OpenTherm
2018-10-05 12:23:32.677 Status: OTGW: TCP/IP Worker stopped...
2018-10-05 12:23:34.678 Status: OTGW: connected to: 192.168.**.**:****
2018-10-05 12:25:01.130 Error: GW OpenTherm hardware (11) nothing received for more than 1 Minute!....
2018-10-05 12:25:02.131 Error: Restarting: GW OpenTherm
2018-10-05 12:26:30.749 Error: GW OpenTherm hardware (11) nothing received for more than 1 Minute!....
2018-10-05 12:26:31.749 Error: Restarting: GW OpenTherm
2018-10-05 12:26:32.734 Status: OTGW: TCP/IP Worker stopped...
2018-10-05 12:26:34.735 Status: OTGW: connected to: 192.168.**.**:****
2018-10-05 12:26:34.735 Status: OTGW: Port already in use
2018-10-05 12:26:34.735 Status: OTGW: Connection reset!
2018-10-05 12:26:34.735 Status: TCP: Reconnecting in 30 seconds...
2018-10-05 12:26:40.659 Status: User: Admin initiated a switch command (75/OTGW Reset/On)
2018-10-05 12:26:41.882 Status: User: Admin initiated a switch command (75/OTGW Reset/Off)
...
2018-10-05 12:27:38.762 (GW OpenTherm) Temp (Max. Vloerverwarming)
2018-10-05 12:27:38.766 (GW OpenTherm) General/Percentage (Maximum Relative Modulation Level)