Main Combi 24 HE no pressure how do I replace it?

[jjenj]

Hi can anyone help. The combi boiler is showing 0 pressure and it should be 0.5 when cold. There is also a flashing red light indicating a drop in pressure but how do I restore the pressure? Can anyone advise.

Thanks in advance

 

[gas4you]

You will either have a filling loop under the boiler with an isolating tap at either end or a built in loop under the boiler. I think it will be the former. Open the valves and let the pressure increase to around 1.2 bar cold, then shut both.

Have you got a leak? Why did the pressure drop?

 

[jjenj]

Many thanks for the advice....it worked.
Think the drop in pressure is because we are currently fitting a shower cubicle and have been repeatedly turning the water off and on.

Thanks again

 

[Gasman1015]

Turning the water off and on will not affect the system pressure, bleeding radiators will lower pressure as will a leak on either your system or your boiler.