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Thanks for the great reference post. (why didn't I find this while searching through the old posts?) I've ordered a replacement transformer and dc-dc converter. For testing Ive used a chinese 220v to 5v power supply, like this one: http://www.ebay.com/itm/HLK-PM01-AC-DC-220V-to-5V-Step-Down-Power-Su...

Hi All, I've connected an esp8266 to the opentherm gateway which functions as a serial to wifi bridge. This works perfectly for 24 hours now. My question is more related to powering the esp. the esp requires max 240ma (3v3). I have a level shifter in between the esp and the opentherm gateway. Is it ...

Hi All, I found my problem. My cheap Chinese ttl to usb converter stopped communicating when I turn off the tube. This caused the opentherm gateway to stop communicating with the thermostat and the boiler. I am now looking for a better solution. Any suggestions? I'm going to try to add the max 232 a...

I left the case open, but the OTGW is positioned next to the boiler. This Friday I will try another OTGW which is working fine and stable at the moment (but with another thermostat-boiler combination). If this OTGW also fails to work stable, it must be either (over)heating or current cable setup or ...

Thanks Mike for the obvious answer, but it is not very helpfull. I could not find a test on that page that I can do to help me solve my problem. The otgw is working for a while without any errors. B... and R... messages are received. The communication stops after a few hours without any errors. Rega...

Hi ALL,
I'm using otgw version 4.2.5.
My problem is that the otgw suddenly stops receiving and sending messages. The thermostat shows 'no communication' after a while.
The logging in otmonitor also suddenly stops without any errors.
What would be a good approach to debug this?

Regards,
Bryan

Hi, I just got the intergas hreco installed today and I was wondering if anyone can confirm that MsgId 25 (Boiler water temperature) is working. I'm getting a Data_inv message in the logfile, but according to the list on http://otgw.tclcode.com/matrix.cgi#boilers the intergas hreco should support th...