Re-filling Heating system

[zoella]

Hi

Please can someone help, we have fitted a new radiator upstairs, We have a gravity feed system. we had air blocks, so we drained the system (opening the bleed value's) . we ten closed all bleed values and flow & return values, then let tank fill back up, then Opened the bleed value and flow value on each radiator until they filed up then moved onto the next which worked until we discovered one was leaking, So we stopped the tank from filling and drained the system again fixed the leak. Now we can't fill the system backup there seems no pressure or there's a blockage.

Can anyone help or advise please

 

[seco services]

if you open a draincock and leave the tank filling is their water coming out the draincock and water going down the feed pipe from the tank ?

 

[EliteHeat]

If you have a motorised valve(s), are they in the manual (open) position? have you actually checked the header tank?

 

[zoella]

if you open a draincock and leave the tank filling is their water coming out the draincock and water going down the feed pipe from the tank ?

. Yes

 

[zoella]

It's a manual value

 

[seco services]

if you open a draincock and leave the tank filling is their water coming out the draincock and water going down the feed pipe from the tank ?

. Yes

try opening the motorised valve next to the pump and make sure all the rad valves are open when filling.

 

[zoella]

there isn't a motorised value next to the pump

 

[seco services]

there isn't a motorised value next to the pump

if its a manual valve is it set to heating ?