grant Oil Boiler

[HampshireSteve]

thought i hit the jackpot when i found this thread but disappointed in teh quality of replies.

i have a grant oil boiler which has started knocking dreadfully when on for water. the knocking occurs almost immed after starting, knocks for about 2 mins then boiler goes off.

various plumbers; boiler engineers have all run a mile and not wanted to get involved. any ideas on what may be causing it would be appreciated.

(last boiler engineer who serviced it said the baffles were a little worn and the expansion of these could be causing the knocking but they would last another couple of years and not worth replacing yet.)

 

[cjb1971]

"engineer has dissapeared" You sure hes not inside knocking to be let out?lol

 

[muggles]

thought i hit the jackpot when i found this thread but disappointed in teh quality of replies

Saying that is hardly a way to generate helpful input...

i have a grant oil boiler which has started knocking dreadfully when on for water. the knocking occurs almost immed after starting, knocks for about 2 mins then boiler goes off

Model? Where is the knocking coming from on the boiler?

 

[twgas]

sounds like lack of circulation to me - but I only do gas not oil - check the pump is working.