Humidity settings for Honeywell Touch Modulation

[antst]

I am struggling how to display humidity on y thermostat.

I was able to setup it with external temperature via OTGW.

But I can't figure out how it must show humidity. It is stated in compatibility topic that it supports it.
I set

SR=78:81,0

OTGW accepts it.
But no reaction on thermostat. What else am I missing?

[hvxl]

SR=78:81,0

You understand that this sets the relative humidity to 0%? Opentherm MsgID 78 is defined to contain a value between 0 and 100 in the low byte. The high byte is unused.

The logs should prove whether that information is actually sent to the thermostat.

[antst]

I tried different values as well , same "no result".
If I understood what I have to see in logs, then I don't see it set in the logs.
I tried different SR values, they work. But not humidity.

[Templar]

OTGW accepts it.
But no reaction on thermostat. What else am I missing?

If I remember correctly, you have to enable the Ventilation function first (see manual). To be able to acces that option, the OTGW (or boiler) needs to acknowledge the ventilation option. It worked on my Honeywell Vision and it's almost the same as the Honeywell Touch.

[antst]

I tried to enable ventilation, it was a first thing I did
Didn't;t have luck. But maybe then I have to configure override for ventilation function on OTGW, so thermostat thinks that there is support on other side.

[Templar]

I tried to enable ventilation, it was a first thing I did
Didn't;t have luck. But maybe then I have to configure override for ventilation function on OTGW, so thermostat thinks that there is support on other side.

Indeed, you have to use the command SR to set a correct response to the thermostat. You have to alter the slave configuration if I remember correctly, that's Data-id 3 or 74. To check out the bitfields of the two data-id's to determine the correct data-id and response, turn on Include details of bit fields in OTmonitor->Configuration->Logging.

SR=Data-ID:data
Set Response - Configure a response to send back to the thermostat instead of the response produced by the boiler. The data argument is either one or two bytes separated by a comma.
Example: SR=18:1,205, SR=70:14