Recent content by en7gjh

It was the secondary heat exchanger! It was difficult to remove (for the plumber) as the original plumber who fitted the boiler 3 years ago left insufficient clearance below the boiler (only 100mm, not 200mm). Thanks all.

I have taken out the flow sensor and the 'filter dcw', both are completely clear. Not sure what you mean by the 'o-ring' but if you are refering to the 'flow limiter insert 10lt' I didn't take this out. Do I consider the heat exchanger at this stage? Thanks

Not managed to take off the flow sensor yet, but have tomorrow set aside to sort out the problem. The water pressure is still low, although it has now turned cold. As an experiment I put the heating on last night and it worked perfectly fine, the whole system was hot within 10/15 minutes...

Okay, I assume I isolate the stop cock, drain the DHW, isolate the gas (precaution?) then take off the various bits. Do you recommend new seals/o-rings?

okay, will give it a go. Is the secondary HE for the DHW and the primary the CH?

So should i clean it or replace it as advised? How would dripping taps impact on the water pressure, from 10bar to a dribble? Is it easy enough for a DIYer to take out the secondary HE and clean it with descaler? Thanks

Hello all. My 28i junior has scale in the heat excahnger due to the hard water here in berkshire, hot water pressure is now at a dribble. A couple of weeks ago I fitted an electronic descaler and this appears to have made things worse - is it scale comin goff inside teh system and getting...