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Hello all you knowledgeable folk! First off please excuse my lack of knowledge when it comes to heating systems and electrics - I'm a computer geek not a DIYer :) I've just received my Tado° system and need to fit it. It's replacing a Danfoss/Randall 3020P timer switch (no room...

Hi, Apologies in advance for my lack of technical terminology, I'm no plumber. I've got an 'issue' with my Sime Friendly boiler. The hot water is fine and the heating is fine, but.... Heating off: Pressure guage reads 1.5 bar. Heating on: Pressure rises until the reading is maxed out -...