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Mike,
Thank you, that looks to have worked. I will keep an eye on it.

I appreciate all your help with this.

Yes 0 events/central_heating/otmonitor/dhwtemperature : {"name":"temp","type":"float","value":41.32,"timestamp":1674461350950} 0 events/central_heating/otmonitor/outsidetemperature : {"name":"temp","type":"...

The otmonitor is connected to the broker as I get some of the other messages. e,g chenable, hotwater, flame, controlsetpoint, maxmodulation, modulation, dhwtemperature, outsidetemperature, dhwflowrate, chwaterpressure, chburnerstarts, chburnerhours, error. Other messages show as retained and do not ...

Yes, I see the messages in the Messages tab.

2023-01-22 3.jpg This screen shot shows the MQTT set up for Windows version of Otmonitor (right) and RPI (left). From the mosquitto_sub, I can see that boilerwatertemperature is transmitted to MQTT as expected when running windows version, but when running RPI version although I can see the boilerw...

1 events/central_heating/otmonitor/chenable : {"name":"on","type":"boolean","value":true,"timestamp":1674322108983} 1 events/central_heating/otmonitor/dhwenable : {"name":"on","type":"boolean","...

Does this help? Sorry I wasn't sure what config file you were referring to {"name":"on","type":"boolean","value":true,"timestamp":1674313021303} {"name":"on","type":"boolean","value":true,&q...

I followed the instructions at https://otgw.tclcode.com/raspi.html to run headless set up. OTmonitor starts automatically on reboot.

I have tried two different MQTT brokers, Mosquitto and HiveMQ. The results are the same.

On further investigation of this I can see that with the windows desktop version everything works fine. On the RaspberryPi version, the boiler water temperature is transmitted once via MQTT, then never transmitted again. I have double checked the MQTT settings in both instances and they are identical.

Thanks Mike, I will have a look.

On the MQTT explorer I can see that boilerwatertemperature is being transmitted but doesn't change. If I use the Windows version of OTGW it all works fine so I assume it is a bug in the Raspberry Pi version.

I am mystified by it. I also get a return temperature message although the boiler (Intergas) does not transmit return temperature and it doesn't show up in the status screen.
{"name":"temp","type":"float","value":12,"timestamp":1673018635444}

Mike, it shows a frequency of 5 for the boiler water temp.

An update on this. I now have OTMonitor version 6.4 running on a Raspberrypi with FW version 5.7. All appears to be good and MQTT is sending messages to my Nodered, however I am not getting the boiler water temperature message. I have a node set up as events/central_heating/otmonitor/# which feeds i...