Page 1 of 1

OTGW doesn't connect to boiler?

PostPosted: Fri Apr 05, 2019 1:08 pm
by ebaauw
I recently got an OpenTherm Gateway from Nodo-shop, with a NodeMCU Wifi module. The gateway seems to work - I can connect to the OpenTherm Monitor to the gateway over Wifi. With neither the thermostat nor boiler connected, the monitor shows a R00000000 message every second.

When I connect my thermostat, a Honeywell Modulation (with touch screen), it shows the standard startup display to set the date and time. After a couple of seconds the display switches to "aansluitfout" (connection error), and the thermostat becomes unresponsive. The Monitor shows "Thermostat connected" and after that a T00030000 message every second or so. From what I understand from another topic here, this is to be expected when the boiler isn't connected.

However, I see no changes after I connect my boiler, a Remeha Avanta. I don't see any Bxxxxxxxx mesages. Switching between Monitor and Gateway mode doesn't seem to make a difference.

As I said, I connect over NodeMCU - I don't suppose I can load the diagostic firmware over Wifi?
EDITI managed to load the diagnostic firmware over WiFi! On the voltage test (option 5) it reports 0.00 for the Boiler, regardless whether it's connected or not.

Any help is highly appreciated!

Re: OTGW doesn't connect to boiler?

PostPosted: Tue Apr 09, 2019 6:31 pm
by ebaauw
It was a hardware issue: they mistakenly sent me a test board. I got a new board now which works.

Re: OTGW doesn't connect to boiler?

PostPosted: Thu May 02, 2019 9:16 pm
by hvxl
Glad to hear the problem was resolved. Thanks for taking the time to report that too.