Question about Combi Centre DX - Mango
Why is my combi boiler losing pressure in ch mode I have to top the pressure up every two days
I can not find any leaks in the system
Make sure the heating is off and rads are cold before checking for leeks if pressure still drops chech expansion vessel is charged to 1 bar.
Posted on Apr 01, 2009
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Posted on Jan 02, 2017
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