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We are having to top up 1/2 bar every 12 hours. I think that our cylinder may have a coil leak. As we have no evidence of water anywhere else. The motorised valve doesn't appear to ever be off so calls for hot water constantly- this valve has been replaced recently. But still appears to be...

Thanks for the suggestions When the gas man emptied the boiler/system using the prv the water came out slightly discoloured with a hint of green. But it certainly wasn't dark. You may well be right about the cylinder as the pressure hasn't dropped below 1 bar if I forget to top it up. But when...

We have air in the system from the expansion vessel and valve replacements. The system was bled by the gas co. before they left and we have bled the rads. twice since-not getting out much air. But the system is still noisy as if air is in the boiler. You said look at the gauge and see what...

Just read elsewhere that losing air through the automatic air release valve could make pressure drop. Does anybody know the answer if that statement is correct. I assume that the valve on teh top could go faulty???

Hi Thanks for the idea but: Its not a condensing boiler- sorry. Certain gas company is the one thats just announced record profits after increasing their prices. I am one that pays a lot of money for cover, that they then wriggle out of sorting the problem out. Which is why I am asking for...

sorry not making myself clear I put a balloon over the water release valve PRV? downstairs(from the boiler) and we have another air valve in the loft as well and also then I went the whole way and stuck them on the overflow valves from the hotwater cylinders.It was one of these that inflated...

As a certain large gas company cant explain why we are losing pressure in our sealed heating system. They have decided we have a leak. Problem is there is no evidence of a leak anywhere even downstairs where we have wooden floors. PRV has a balloon on it so we know thats not the problem. We...

Thanks for your suggestion. I have been watching the PRV for drips. Nothing as yet. Any other ideas? Re the cylinder as I said I am not convinced with the airlock.

Hi can any body help me. Call me suspicious but having had 5 visits in 2 weeks from a well known gas company to sort out this problem. We have had several parts replaced but the original problem is still there. As I understand it,we have a pressurised heating system but a gravity fed hot water...