The Grant boiler was installed 4 months ago and seem to function fine with the exception that I have to top it up every 8/9 days.
Normally water pressure is steady at 1 bar and then after 8/9 days drops to zero, over night, during what seems to be, some form of internal process it does to itself at around 4am when the heating is off. The boiler has never failed during working hours (so to speak)
This is not normal compared to other combis I have had and I can't find any form of leak from Rads or piping. I have 15 rads and no external mods to the boiler.
Normally water pressure is steady at 1 bar and then after 8/9 days drops to zero, over night, during what seems to be, some form of internal process it does to itself at around 4am when the heating is off. The boiler has never failed during working hours (so to speak)
This is not normal compared to other combis I have had and I can't find any form of leak from Rads or piping. I have 15 rads and no external mods to the boiler.