Please could anyone give any advice on how to control the water heat with the above boiler. My father in law had one fitted and has managed to reset something so that he now has only tepid water. The manual seems to make no mention of actual water temperature and how to set it. My own set-up has a thermostat in hall and thermostat attached to hot water tank as well as the usual timer and boiler itself. Fil's seems to have no thermostat anywhere so just the boiler with some sort of baffling electronic control and a rather antiquated timer (not digital despite only being fitted last year). I am not a handyperson (as you may guess) but my 21 year old son (who lives with fil) is also unable to fathom how to turn the water heat back on. Any suggestions would be gratefully received.