No heating after air-lock in system

[retinal]

Was wondering if anyone can help?

I recently had an air-lock in my heating system so followed some advice on here on how to resolve this issue; drained system, refilled system (filling loop), checked expansion vessel pressure and bled radiators etc.

I seem to have no heating at all now and the boiler is not firing up.

There is no sound at all from the boiler, however there is a silent flowing sound coming from the pump, I have tried bleeding it from the burner and pressing the reset button but to no avail.

The Boiler is 'Warmflow'
The Burner is 'Riello'
The Pump is on the right hand side of the boiler
Radiators have been bled
Expansion Vessel Gauge is showing 1.5 (Bar)
I've bled the pump as well

I also tried flicking the switch next to the thermostat as I did one other time (which worked before) but this seems to be unresponsive now also.

I really don't know what I've been doing wrong, do I need to leave it for awhile before trying to start it again? Would it be the thermostat?

Completely lost on this one.

Would be really grateful if someone could advise.

 

[Softus]

I recently had an air-lock in my heating system

I very much doubt that you did.

What were the original symptoms of the alleged air lock?

 

[twgas]

however there is a silent flowing sound

I've never heard a silent sound !!!!!!!!!!!!!!!!!!!!!!!!!!

 

[retinal]

Sorry about the grammar.

Sound from the pump was just the water flowing.

When I bled the radiators, no water or air was coming out so using the 'filling loop' which was in the attic; released more water into the system.

I was then able to bleed the radiators properly.

When I went to fire the burner up nothing worked.

Haven't a clue about plumbing and heating.

Eventually called in a plumber, turned out it was the thermostat; £30 for new thermostat and £48 to fit it so heating is now working.