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Hi The safe/clear-cut option is to connect the outlet drain pipe to the main drain pipe as a separate outlet and to set the outlet tube to drain pipe connection at the correct height as shown in the manuals - drain pipes can block and flood the premises when least expected! So . . . if you...

Hi Usually if a washing machine doesn't spin it is because it thinks there's water in the machine, even if all the water has been pumped out. So, I suggest to check the small plastic container and the attached small diameter tube, to the pressure switch (round switch located on top of...

Yes, Universe's system is still gassing hydrogen, after flushes and other things changed, etc! Boiler will be changed soon. I will update you. Cheers.

I'm glad you guys are enjoying this extra-detailed-down to-atomic level explanation of central heating problems. :twisted: The fundamentals of water corrosion are shown in my last post. Water (H2O) is not H2O. It is H2O <==> H+ & OH-, ie it's an 'equilibrium' of H+ and OH- ions, which...

Thanks for your 2 posts sterose. Iron corrosion in water follows 2 potential chain reactions: H+ route - in acid or 'neutral' water. OH- route - in alkaline water or when dissolved oxygen present. In neutral/acid water, the rate of corrosion is dependent on H+ concentration, the higher...

sterose - I'm not sure who you're referring to, but good to see your messages. Water is H2O or H-OH -> giving (H+ plus OH-) which is the basis for corrosion. Hydrogen ions (H+) drive corrosion in water (acidic conditions). Hydroxide ions (OH-) drive corrosion in water (alkaline conditions)...

Curtis, just thinking loud: Is it 200% certain that water is being lost? - ie faulty gauge. Can you close ALL pipes/radiators, leaving only one open to help the pump and then see if the problem still exists. If everything is closed and still loosing water for sure (and the short pipe circuit...

As you know, solution sample sent, awaiting results. General/uniform corrosion is affacted by dissolved oxygen, hydrogen ions (H+) & water (OH -ve), leading to hydrogen gas & mainly ferrous hydroxide (rust) -> in aqueous conditions. Bi-metallic contact corrosion in aqueous environments...

Water sample has been taken, awaiting results. Hydrogen build up continues.

Oilman - thanks for your message. Things go wrong in clusters . . . So was unable to phone them yesterday/today - but yesterday I emailed Sentinel & Glow-worm, no reply yet, tomorrow I'll phone both parties plus british gas heating. The majority seem to think improper system flushing (I have...

Sterose - a steady continuous build of gas is the problem - ie approx 0.1 bar every 2 days - this seems to remain the same. Example: Last week I de-gassed the radiators (extracting tiny amounts of fizzy water as usual) press went down to 1.1 bar - Today the press reads 2.4 bar! So if I do the...

OK Sterose . . . now you got me worried. There's no noticeble smell of 'natural gas' when bleeding radiators. The water extracted is clear but fizzy/foam/froth, water clears after a few seconds. Is it possible that boiler heat exchanger or something else is reacting even though there's 2...

DP - The first time the engineer investigated the gas build up, the gas from a radiator burnt strongly -> ie hydrogen. Unless you believe, there might have been TWO problems (hydrogen + air), but how can air get into system if it is pressurised (combi boiler sealed system)? ADDITIONAL...

URGENT, if you are able to suggest a solution to me. Many thanks. Archie BACKGROUND:Reputable central heating installer. Complete new central heating system, boiler/pipes/radiators Combination condensing gas boiler, sealed system. Standard Copper pipes (25mm). Radiator thermostat...