H/Tank overflowing

[premierfc]

I have a vented sytem which is overflowing into the header tank.The ball cock is submerged. I was also getting very noisy pipe banging when the system was on. Someone suggested turning down the boiler thermostat which I did and the banging stopped,unfortunately the tank is still overflowing.Do you think it could be the boiler thermostat or is it likely to be a blockage in a pipe.when you turn the boiler thermostat up and down it doesnt affect the flame. Any ideas please it is driving me scatty

 

[seco services]

it won't affect the flame.
just the temp of the water circulating.

try turning the pump speed down aswell.
sounds like a blockage.

 

[shawd]

it won't affect the flame.
just the temp of the water circulating.

try turning the pump speed down aswell.
sounds like a blockage.

WHICH TANK ? IS IT THE LARGE DOMESTIC COLD WATER TANK OR THE LITTLE HEATING TANK ?

It could be the coil gone inthe cylinder if its the little tank, or mixer taps on the bath passing if its the larger tank, or ballcocks faulty or try turning pump down a notch if its coming over the expansion pipe into the little tank

 

[premierfc]

I have a vented sytem which is overflowing into the header tank.The ball cock is submerged. I was also getting very noisy pipe banging when the system was on. Someone suggested turning down the boiler thermostat which I did and the banging stopped,unfortunately the tank is still overflowing.Do you think it could be the boiler thermostat or is it likely to be a blockage in a pipe.when you turn the boiler thermostat up and down it doesnt affect the flame. Any ideas please it is driving me scatty

 

[premierfc]

It is the F + E tank. I have already turned the pump down but no luck

 

[shawd]

it won't affect the flame.
just the temp of the water circulating.

try turning the pump speed down aswell.
sounds like a blockage.

WHICH TANK ? IS IT THE LARGE DOMESTIC COLD WATER TANK OR THE LITTLE HEATING TANK ?

It could be the coil gone inthe cylinder if its the little tank, or mixer taps on the bath passing if its the larger tank, or b*****s faulty or try turning pump down a notch if its coming over the expansion pipe into the little tank

Sludge in the system it is or blokage , try to clean system or raise the tank higher if its in the loft