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  1. K

    potterton suprima 40 / 50 boiler banging weezing

    Thanks for info mick. The seal you mentioned must have been discarded by previous house owner or engineed as i gave the LH front cover a wipe over prior to re-fitting it and i could not see a seal attached. However, i will now look into it. Back to my previous. The temp ranges indicated on...
  2. K

    potterton suprima 40 / 50 boiler banging weezing

    Mick, thanks for quick reply. By RGI i take it you mean an engineer! However, not sure what seal i have compromised as the thermistor just pushes into a hole on this model with no disconnections required. Or, is there something else i'm not aware of? Kevplumb, thanks for quick reply...
  3. K

    potterton suprima 40 / 50 boiler banging weezing

    Hi, recently my boiler (not sure if 40 or 50) has started to make banging and weezing noises after running for quite awhile. I have checked the pump and it is running fine with the mid range speed selected and all radiators hot. suspected the boiler thermostat (upper of the two on the boiler...
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