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Posted by HeatPro on November 13, 2008 at 10:44:42:
In Reply to: Sudden Pressure Loss Baxi boiler posted by Mike Conroy on November 13, 2008 at 05:23:13:
If you can find absolutely no leaks, then there can be a pressure relief valve release of water that dries before you can see it. That could indicate an expansion tank problem, or an internal domestic hot water to heating water leak.