Can't set CH temperature

[Saur0o0n]

Hi,
Is there any way (I couldn't find any howto for this) to debug why this single parameter doesn't work?
On/off of CH and DWH does work, I can set DWH water temperature, I can see DWH water temperature, pressure etc. But I can't set CH temperature (also modulation doesn't change anything - but that's not important).

This is the debug output when I try to change CH temperature (you can see 'boiler temperature' = 42, despite it was set to 48C, and change from 48->49C)

[11:58:51][D][sensor:093]: 'boiler temperature': Sending state 42.00000 <C2><B0>C with 1 decimals of accuracy
...
[11:58:51][D][number:054]: 'CH setpoint temperature' - Setting number value
[11:58:51][D][number:113]:   New number value: 49.000000
[11:58:51][D][number:012]: 'CH setpoint temperature': Sending state 49.000000
[11:58:51][I][opentherm:085]: Request updating CH setpoint to 49.000000
[11:58:52][D][opentherm:410]: Enqueued request: WRITE_DATA(1, 0x3100)
[11:58:52][D][opentherm:410]: Enqueued request: WRITE_DATA(8, 0x2A00)
[11:58:52][D][opentherm:410]: Enqueued request: WRITE_DATA(14, 0x6400)
[11:58:52][D][opentherm:410]: Sending request: WRITE_DATA(1, 0x3100)
[11:58:52][D][opentherm:410]: Enqueued request: READ_DATA(18, 0x0000)
[11:58:52][D][opentherm:410]: Enqueued request: READ_DATA(17, 0x0000)
[11:58:52][D][opentherm:410]: Enqueued request: READ_DATA(26, 0x0000)
[11:58:52][W][component:237]: Component opentherm took a long time for an operation (55 ms).
[11:58:52][W][component:238]: Components should block for at most 30 ms.
[11:58:52][D][opentherm:410]: Received response: WRITE_ACK(1, 0x3100)
[11:58:52][D][opentherm:410]: Sending request: WRITE_DATA(8, 0x2A00)
[11:58:52][W][opentherm:414]: Received invalid response: UNKNOWN_DATA_ID(8, 0x2A00)
[11:58:52][D][opentherm:410]: Sending request: WRITE_DATA(14, 0x6400)
[11:58:52][D][number:054]: 'CH setpoint temperature' - Setting number value
[11:58:52][D][number:113]:   New number value: 50.000000
[11:58:52][D][number:012]: 'CH setpoint temperature': Sending state 50.000000
[11:58:52][I][opentherm:085]: Request updating CH setpoint to 50.000000

The boiler is Termet Gold Plus II 20

[khenderick]

Is 49 within the limits of your boiler? It might be configured to for example only accept values between 20 and 45 degrees. Do lower values work?

On a side note; another opentherm implementation is now available as native ESPHome component; it's a bit more advanced compared to this one, so it's worth a try as well.

[Saur0o0n]

Hi, and thank you for your attention :)
Yes, the boiler can go to 75C for CH (from the LCD panel I can set it manually and it works without problem). And no, it doesn't work to change up/down this value (I've checked also ch2 - no change), but it works to enable/disable CH.

And I've checked the other implementation before writing here, since it's uses other opentherm library - also doesn't work with that one either and btw. it's kind of, less user friendly :)