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P
A better description of what is going on would help. Certainly an excellent boiler - I recently fitted a new gas valve to mine.
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P
My 40H MDF had this problem intermittently for a few weeks then locked out completely - gas valve had failed.
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P
I have original manual for 40 H RF and MDF. Can photocopy if desired. Any "dead - for spares" 40 MDF about?
