- 21 Oct 2011
- Reaction score
Hi, we have a Vaillant Ecotec Plus 831 that was installed in 2006. The pressure keeps rising to into the red, having to bleed radiator to bring pressure down once a day. Both valves are closed on the filling loop. Now the radiators are staying on constantly even when radiator switched to off and having to turn boiler off. Can anyone offer any advise please?