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Hi,

I have the OTGW and the Honywell round modulation thermostat
connected to a nefit ot converter and my nefit trendline hrc30 cw5 heating system.

When i see some other nefit heaters message id 18 is working (water pressure) () on the matrix
only the gw cannot see it ..

is it the combination of the round modulation (does not support id18) and the nefit ?

is there a way the gateway gets the id18 and send it to the serial output ?

Thanks Ronald

Add ID 18 as an alternative for the gateway to send instead of a message for which it has figured out the boiler doesn't support. See http://otgw.tclcode.com/firmware.html#cmdaa

So when i read it correct,

Just one time put AA=18
and then it is requested from the boiler ?

I will test it this weekend an Iwll post if it works !

Thanks Ronald

Correct. Under normal circumstances that should suffice. If it doesn't, please collect the logs from before you gave the AA=18 command until about half an hour after.