Hello,
I’m pretty new in Home Assistant. Before I used Domoticz but I’m very pleased with HA since 1 or 2 months I’m using it now. The only problem I have since the start is my Opentherm Gateway integration. The connection is gone sometimes and then my boiler stops heating my home.
There is no specific time frame when it stops working. Sometimes it is after a couple of hours and other days it is working fine and stops working after 2-3 days. When it stops working my thermostat in HA show the correct current temperature and the correct setpoint temperature but it stops heating. Sometimes I wake up and it is 12 degrees in my living room but it should be 17 degrees at night.
First I had my Opentherm gateway with an ESP connected over wifi. This setup always worked in my Domoticz setup for a couple of years. Now I see all this disconnects so I decided to connect my Opentherm Gateway by an FTDI cable direct to my HA raspberry. It is working but now after a day it also stops working this morning. I had to reboot my HA raspberry and then my boiler starts heating again.
It looks like it has something to do with the software integration because my hardware is fine. The Opentherm Gateway was working fine with Domoticz.
In the logging I see the following errors.
Logger: pyotgw.protocol
Source: /usr/local/lib/python3.9/site-packages/pyotgw/protocol.py:567
First occurred: 09:26:10 (2 occurrences)
Last logged: 10:43:03
- Command PR failed with SE, retrying…
- Command PR failed with R: A=OpenTherm Gateway 5.1, retrying…
Logger: pyotgw.protocol
Source: /usr/local/lib/python3.9/site-packages/pyotgw/protocol.py:607
First occurred: 10:43:03 (1 occurrences)
Last logged: 10:43:03
Unknown message in command queue: R: A=OpenTherm Gateway 5.1
Logger: pyotgw.protocol
Source: /usr/local/lib/python3.9/site-packages/pyotgw/protocol.py:64
First occurred: 09:47:02 (4 occurrences)
Last logged: 10:43:03
Disconnected: None