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That's the install completed, and I've updated my OTGW weather compensation firmware. My inherited Vokera boiler has some limitations versus the...

The tutorial is almost complete. Just got to re-read it and it should be done. So will post it here later today.

It is the frost protection working as it overrides the TRV setting which is off. The radiator remained off in the other room but it would as it’s...

I am inclined to agree. One would expect a manufacturer’s purpose designed system a better route to take than an add on converter to make it...

Are you sure it is not the frost protection working. I know someone has said that if you turn it to off, frost protection is disabled but the...

Reading various threads and reviews, I wonder if 'forcing' a Worcester-Bosch boiler to use Opentherm is worthwhile?

Yes it would, another way. I would though see lots of messages in the log file. Although a change from those saying contact has been lost with my hot...

Thanks, I was certain I had seen something about this somewhere.

Presumably, setting to 'off' and immediately removing the batteries should keep the TRV closed?

https://myboiler.com/opentherm/worcester-bosch-opentherm/

As an addendum to the post the Worcester Bosch installer who has quoted for the work, including adding my Evohome system to a new boiler, tells me...

Morning has broken! I swapped the HR92 with one from another room. I set both to Off and ensured that over night the temperature setting in the...

Addendum. I have swapped over a couple of HR92s putting the one thought to be faulty in a spare room that is not heated although it will not go below...

Done that. It has shown “off” all day. The Control Panel showed an override until 22:30 (a set point) with a set temperature of 5.5C now past that,...

Same here, if it's set to OFF it ignores the schedule. Our spare room got set to OFF accidentally one day and it was several days later that I...

Frost protection is disabled in OFF mode. I've tested this before more than once with an HR92 screwed onto a spare valve body thrown into the...

I think what is causing it is the inbuilt frost protection. The HR92 reads off at present, I again set it to off this morning, but I can feel some...

It works on mine, I turned it off and it always is off.

My answer to that from my experience is b...cks! Must check the contacts though. The batteries are a month old. I wonder if it’s a feature that has...

The user guide states that if you turn the HR92 to off it will stay off. As stated maybe check the batteries, when they are close to dying, my...

I'll check the contacts for the battery but there is no doubt the Off setting was overridden by the next set point. It is not going to be a big issue...

Yes, but as the temperature drops below that the boiler fires up.

I've tested OFF on HR92's many times and OFF means OFF. It will completely ignore the schedule and remote manual overrides, furthermore OFF...

Looking at my controller, that room is set to 5c and set to permanent and the HR92 always reads off. Have you set the room to be permanently at 5c...

Would removing the batteries help?

No, it is only controlled by its schedule. Manually setting the control to off does not it seems override the schedule. I set it to off last night...

I have the one in my spare room set to off, I just turned until it said off and that is where it has stayed. I don’t believe I did anything on the...

Yes that zone has the maximum 6 set point changes, and with each change the Heat Demand in that zone changes. But the controller has no clue that the...