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    Scale Problem? Potterton Boiler

    Hi JohnD, I did add X400 after the last flush and I'm planning on leaving it in for at least 4 weeks as suggested in other posts, will flush it out again mid Dec., and will let you know the results. :) I expect it will shift some sludge from the system, there are two original rads which never...
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    Scale Problem? Potterton Boiler

    Just thought I'd provide feedback to close this out. Got an engineer to come out from Heateam (the Potterton site directs you to them). Fixed fee of 236 quid for parts and labour. He didn't seem convinced it was the boiler control thermostat (he kept going on about sludge build up but that...
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    Scale Problem? Potterton Boiler

    Thanks again Gents. Spent most of yesterday working on the mains flush which of course hasn't made any difference, but at least I feel like I was working on the problem :) Good housekeeping anyway! [The thermostat on your model should not normally be operated above 3½ otherwise the...
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    Scale Problem? Potterton Boiler

    Sorry ChrisR, missed that. The supply from the boiler stays hot for a short time (sometimes an hour or so, but often only minutes) and then stops- I guess the boiler thermostat trips and stops it heating the closed loop. The pump stays running and progressively cooler water continues to be...
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    Scale Problem? Potterton Boiler

    Hi gents, Thanks for the quick responses. The boiler is a Potterton Profile- can't see any model no, etc. There is also an electric immersion element in the cylinder and it seems to work, at least it provides much more hot water than than boiler ever does. It hasn't been used much until...
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    Scale Problem? Potterton Boiler

    Hi gents, seems there is a lot of knowledge on this site so thought I'd try picking your brains. We have had seemingly erratic HW and CH when required by tank/ room thermostats from our gas fired Potterton boiler for about a year. This is a pressurised system and the boiler is about 9 years...
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