Hi All, wonder if you can help with a question. Recently had some problems with a ferelli combi boiler in that the room stat is not controlling the CH, heating remains on depending on what the stat is set at. Had someone come and have a look and he diagnosed the problem as a fault with the main board on the bolier and was looking at about £200 to repair. He suggested that this was not cost effiecient and a way around would be to fit TRV's to the rads, except the bathroom to allow flw back to the bolier.Basically I want to know if this would be ok, to have the TRV's control the boiler without a room stat. Hope this explains ok, any advice wellcome.