Clanking Glow-worm boiler - DIY or Rogue Trader?

[Theo]

New to the site and the world of boilers...so hope someone can advise.

I have a Glow-worm Fuelsaver 65F/80F (12-15yr old?), never had problems with it before, but it was re-sited (raised 4 ft) 1 year ago during a kitchen extension, and 1 rad replaced in top bedroom 6 mths ago. I think it is open-vented (there is a tank in loft if this helps).

It has been on HW only over the summer until yesterday when it started to clank and bang loudly, like someone had dropped a spanner in the pipes just above it. I switched off as soon as noises started, and have switched back on once and noises started again after 30secs or so, so it is now switched off.

Anything I can do diy (keen to give it a go), or do I need to chance my arm in the world of Rogue Traders?

Cheers

 

[ChrisR]

Short of water, or pump stopped if fully pumped. Check tank in loft has water, drain some from drain cock on pipes and make sure tank in loft refills.

Pump - remove centre screw and either twist it or poke a screwdriver in and try to twist, may get pump moving. (dribbles)

COuld also just be air trapped - look for air bleeed point in airing cupd!

 

[PEDANTICVINDICTIVEMAN]

Obviously needs 5 visits from different plumbers to tell you 5 different things then a mega £2000.00 powerrflush then told you need it replacing, ooooooooooooorrrrrrrrrrrrrrr, pump not working, main stat not working or no water in system, let us know how you get on.