CENTRAL HEATING QUERY

[paulaf]

Ok, my central heating was pumping over in the loft - expansion tank hot and overflowing. Was told i needed powerflush. Powerflush completed and guess what - still hot and pumping over. Had pipes going to loft from pump cut and re worked and its resolved the problem i think.
Expansion tank is lukewarm? is this correct?
Did my system need flushing or did I have a blockage in the pipes which caused the issue?
Powerflush has come at a premium and now I am arguing it wasnt required?

Any professional help is much appreciated.

Cheers
Paula

 

[ollski]

If its been pumping over it will have corroded in the system although the brown stuff is very difficult to break down and remove even with a power flush. Sounds like they cut out and replaced the tee where the water from the tank joins the system afterwards. Pretty likely it needed both doing.

 

[dcawkwell]

Best way is to have a sealed system installed (about £50 for the kit)
A vented system with header tank has no place in a modern heating system.