This is interesting for sure, 50 deg isn't really all that hot to some, I know as our house temp valve set at 53 was damn cold I thought, things improved when I did surgery on it........................
It's an interesting problem, I'm doing some 101 on this system to find out more, one interesting thing I came up with in the documents on it is in the pic, more research needed and will ask some folks around here if they have one fitted, every second house has a boat and van here..........
It would actually seem that you may have to insulate your HW lines to try and keep the temp up as much as possible and the temp prbe could be reporting a false, if you can check the contact on the temp probe, any bit of resistance on the contacts will give a false reading, remove it and give it a clean in some descaler, like a coffee machine, this may help but if your temp at the tap is about 45 deg or so I think that may be all you get.... unless theres a way tochange the default temp setting..................
PS: there is a cold water temp probe and a HW one.....
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