Recent content by BigG

Wahoooooooooo! This morning went outside and fully closed the stopcock then opened it back up. It appeared that when opened (about 360 degrees) you could keep turning anti-clockwise but it would not increase the flow rate. Therefore closed it again and opened it again to about 90 degrees...

There's only one pressure reading and thats on the closed CH system. It reads constantly at 1 bar unless I turn on the CH and then it can rise to just above 2 bar so nothing unusual there and it drops back down to 1 when the heating is off. I plan to reduce adjust the stop cock outside...

Thanks boilerdoktor. No water meter but about 2 months ago I turned off the mains water supply to the house from the stop-cock on the street to repair a pipe to the downstairs loo. Turned it back on and everything was running fine. I didn't mark the position of the stop cock before I...

Thanks ChrisR. Firstly...I have turned back on the DHW cold inlet back on in the boilder. To answer your question....if I run the cold (or hot) water taps whilst the WC or other appliances are filling up, when they shut off there is no bang from the boiler. If I then gently close off the...

A problem strarted occuring a week or so ago and is as follows : Whenever the cold mains water supply re-pressurises (e.g. after the washing machine, dishwasher or toilets have finished taking in water) there is a banging noise followed by some pipe rattle upstairs. At first it was...

On Friday the engineer came round. He changed the HX for me and all has been o.k. since. At the same time some inhibitor was introduced into the system (at my request) via the filling loop and he gave the boiler an all round check and gave it a bill of health. He was interested to know...

Have spoken to my local engineer. He confirms from the symptoms that its the HX. He advised to speak to Bosch to find out how much a replacement would cost. Bosch have informed me they only sell spares to merchants. Have contacted the Plumb Centre and others. Typical price is around...

Just a quick update. Had the further inner cover off the combi and can now see the burner and the HX. I assume that the secondary HX is simply the CW mains that runs through some form of internal container that contains the HW itself (a bit like my old hot water tank that used to be in the...

Sorry missed out the following. Don't know how crucial the test was...... Test 3 ------- 1) Bleed the system down to 1.0bar with bleed knob on side of relief valve. 2) Turn off CW mains supply to house. 3) Leave to stand for 4 hours without CH on (or having been on recently)...

Accidental new topic.

Hi All, Firstly thanks for all the replies so far. I have performed some further analysis since I posted the original mail. Here are the facts as I see them now...... Test 1 ------- 1) Bleed the system down to 1.0bar with bleed knob on side of relief valve. 2) Leave to stand...

Thanks a lot bones001. I'll have a dig around and let you know how I get on.