glow worm fuel saver mk2 clanking noise

[vik2]

Both are aggresive chemicals and only used with caution.

The heat exchanger on a glowworm has vey small water ways and is prone to a blockage. (Ihave cleaned one this year alredy).

Fortunately, they are so easy to remove and clean I generally get my apprentice to do that job nowadays.

As I speak I have my mothers heat ex in my garden fizzing away!

Dave[/quote]

Thanks Dave, How much this can typically cost !

OR is possible I had opened or closed a wrong valve somewhere.

Thanks again for your help !

 

[vik2]

could be air or a blocked cold feed. did the header tank empty when you drained system

Yes the header tank did empty and even left it running to flush out any muck !

Partial or full blockage in the heat exchanger will be your problem. Remove it (or get someone that can) and clean it out. DS40 or D block will do it. Replace it and let me know know how your circulation is then.

Dave

Thanks for the reply.

Sorry what is DS40 or D block and where can I get it !

Both are aggresive chemicals and only used with caution.

The heat exchanger on a glowworm has vey small water ways and is prone to a blockage. (Ihave cleaned one this year alredy).

Fortunately, they are so easy to remove and clean I generally get my apprentice to do that job nowadays.

As I speak I have my mothers heat ex in my garden fizzing away!

Dave

Thanks Dave, How much this can typically cost !

OR is possible I had opened or closed a wrong valve somewhere (Please see my previous comments).

Thanks again for your help !

 

[twgas]

has boiler stat been checked?

 

[vik2]

has boiler stat been checked?

Not sure what stat, I think its where it lights up etc.

I got the boiler serviced last year by BG.

 

[twgas]

do you have a BG contract?

 

[vik2]

do you have a BG contract?

I only have service contract !

 

[twgas]

is flow pipe from boiler getting VERY hot (should not be more than 80c)

 

[vik2]

is flow pipe from boiler getting VERY hot (should not be more than 80c)

Yes it is very hot not sure if its more then 80c

 

[twgas]

is it very hot even when turned to a low setting, if so I would be suspecting the boiler thermostat is faulty.