baxi combi 80 3 way valve not working on ch. rad very hot no control with themostat turned right down. hw. ok. pressure in the green ok.
retired service engineer just need advice what to look for.
thank you
5 year old baxi combi 80 eco slight leak on 3 way valve, rads very hot even with themostat turned down, pressure ok ,hw ok , system working ok until starting up this month.any ideas please?
central heating very hot [rads] domestic hot water ok slight leak on diverter valve .
no control over ch themostat , turned right down
any ideas please