Originally Posted by
DBMandrake
Yes a much discussed "known bug", check out the beta firmware thread for more discussion about it.
On the plus side Andy the Minion has already said quite some time ago that the problem is known and already rectified in later internal builds so we can be sure that when we receive another update (either a new beta version or final release - who knows) the problem will be gone, so it's just a matter of being patient until another release comes out, unfortunately.
On the minus side, it's a really, really annoying problem and is the only change in the beta firmware that is causing me significant inconvenience, and to be honest I'm chomping at the bit to get an update, even another beta to address it.
BTW, it's not actually any zone that has a manual override that prevents hot water heating - it's any zone that has a manual override AND has a heat demand. If you use a manual override to reduce a temperature, hot water heating is not delayed, also if you apply an override that is a modest increase once the zone heats up and the heat demand falls (it has to fall to a very low near zero heat demand) then hot water reheat will commence. However if you set a large set point increase that can't be attained heat demand will never drop to a low enough value to allow hot water reheat to commence, so hot water will never reheat, as you describe.
If you read between the lines this is not actually a bug in my opinion, but something that was originally intended as a feature but was later deemed to be a bad idea and removed again. (But unfortunately not until after the beta version we have been provided)