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Hi, F and E system - Vaillant ecoTEC Plus 428 boiler. Drayton Water and CH timer Grundfos pump 2 x Honeywell 2-way diverter valves Salamander pump (Not sure what that pumps tbh) 3 Storey house - 12 radiators ( 4 groundfloor, 6 first floor and 2 on the second floor, 1 bath, 1 shower)...

My boiler, which is about 5 years old and regularly serviced has decided to lock out on a fairly regular basis now. The last time it happened, this morning and twice over the weekend. It had done it about a week before that too. Central heating was working when I went to bed last night. This...

Can anyone tell me if the above boiler (or any is sophisticated enough) to stop you filling the system up? I attempted to put some water in to the system (to increase the pressure) yet when I move the top up 'tap' nothing happens and I don't hear any water flowing into the system. It was at...

Has anyone got a user manual please?. Ive looked on the Potterton site but the nearest they have is a Powermax HE. Many thanks Danny