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- 16 Jan 2007
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hiya, i have a sime 90 mk 2 i have had it for about five years, being recently divoreced i dont have a clue, lost the manual, the heating has been making a banging noise when on full goes when i turn it down, bled the radiators yesterday but nothing came ou tof two of them, anyway the boiler now wont fire up i dont know if i should refill the system or what, the pressure needle iis fine between 1 and 2 underneath the boiler there are two blue taps i am not sure if i should turn these or not to fill it back up please help me my kids are froze thanks amanda