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- 27 Apr 2008
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After 14 years of never being serviced, having sentinel cleaning fluid (cannot remember which) in the system since before covid hit.
Todays problem with the boiler is that the heating side is filling to 3 bar and the PRV is letting pass, the filling key is removed so it's not that - I suspect that the cleaner has eaten away and made a hole in the DHW echanger and is letting water cold through into the heating side.
I have ordered a new DHW heat exchanger, washers and silicone grease to replace.
However we think that it's probably about time for a new boiler.
Is the 25si still produced or is there a direct replacement for it that doesn't need new piping/flu hole etc. ???
If so is there anyone on here in the Rossendale area can quote me?
Todays problem with the boiler is that the heating side is filling to 3 bar and the PRV is letting pass, the filling key is removed so it's not that - I suspect that the cleaner has eaten away and made a hole in the DHW echanger and is letting water cold through into the heating side.
I have ordered a new DHW heat exchanger, washers and silicone grease to replace.
However we think that it's probably about time for a new boiler.
Is the 25si still produced or is there a direct replacement for it that doesn't need new piping/flu hole etc. ???
If so is there anyone on here in the Rossendale area can quote me?