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How can a thermostat know the valid range for the setpoint if the boiler changes the limits along with the setpoint? But the boiler doesn't change those limits based on setpoint. My thermostat has setpoint on different levels (it uses dynamic usually 30 - 70 C) and the limits on the boiler are stil...

Thanks it worked :) So, what was the issue with the boiler firmware? Because as I see it now OTGW didn't sent the message 49 because it saw that the limits in boiler are lower, right? But the message 49 is to increase those limits, isn't it? Also a question, wouldn't it be a good idea to add a "...

OK, I'll try that.
But will I be able to use otmonitor to flash back the gateway firmware after I flashed interface firmware and sent the command to the boiler? Or will I need another way to got back to the old firmware?

When I do restart of thermostat I think it also results in turning of OT or something, because after that when I issue e.g. "SH=75" I get "SH: BV" so I need to do UI=49 and GW=R again to be able to SH. But that doesn't help much, 55 is still set as max CH water setpoint.

I don't see Write-Data for that
I tried it several times. I set UI=49 in the morning so I assume SH should work now.

Maybe I need to turn off-on the boiler for it to sent back MsgId 6?

Here it is attached, messages from the web UI and the bare messages from telnet (those have my keystrokes when I was entering the UI=49, GW=R and SH=75).

Unfortunately this didn't help - it wasn't accepted by the boiler as it still transmits Max CH water setpoint: 55 And the interface on the boiler itself also doesn't allow increasing the boundary above 55, I assume that when I switch from OpenTherm to some other interface (on/off or constant on) it ...

I have been using OTGW almost a year and I didn't have any issues until last week. I noticed that my thermostat sets CH water to 75 degrees I decided that it is to high considering that outside it was 5-10 degrees, so I lowered it to 65 and then 60 using the web interface. Now the outside temp is ~0...