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Thanks for that! Meantime had the 'mixer' valve open from the unit, but nothing wrong there. I'll have a look at the tank stat, see if it works OK. Cheers, Rene.

Hi, hope you can help me. We have a SF 2000 shower/pump and for some reason you can only open it a little bit otherwise it becomes too hot. It is useable, but very difficult to adjust. It is connected, it seems, as per instructions; cold feed from the storage tank in the attic and the hot feed...

Hi, we have ceiling lights in the living room, in the kitchen and bathroom and the lightbulbs keep on failing very regulary. We have had the house for a year and I have replaced at least 30 bulbs. Could there be an electrical issue? Appreciate your advice, thanks, Rene.

Team, really appreciate the info. With replacement I ment pulling all the **** out and getting a combiboiler installed.

John, many thanks!! Great info. Indeed I will need to spent some money. I'll clean up the electric wiring and will look at the pump tomorrow. I already got some X100 and X400 on order. Any ideas about that filter and a flow control valve i.c.w. the age of the equipment? I think that I'll have to...

I did what you suggested. Took the head of and tested operation of the valve (pressing the pin in and out). I could repeat the noise by almost closing the valve (TRV) manually.

I have added a link to some photo's of the set-up below, hope it works. The boiler and pump are turned on by the timer switch on the HW contact. The CH only comes on if the HW is on (function of timer switch) and then switches the valve in series with the room stat. This is an open system...

Thanks for the quick response! - Old pump - could be, everything else is in bad shape. -There is no bypass, but some radiators haven't got a TCV fitted and are open. - Blockage - again, could be, but all radiators get warm and I have DHW. - I think there is enough water, but I'll check. -...

I have some (quite a few) problems with my DHW/CH system. The house is from 1979 and was 10 years ago extended. When I bought the house last August I noted that a valve fitted next to the heater leaked over its stem. When I wanted to overhaul the valve and therefore disconnect it electrically...