Vaillant Eco Combi Boiler

[suehancock]

Hello all this is my first post and I am a little nervous but here goes. I have the above boiler and have a F.22 code flashing and the pressure has dropped to 0.0. Can I just re-pressure by turning the grey knobs on the underneath of the boiler or do I need to call in the engineers? The appliance is 2 years old and was serviced in March.



Thank you Sue

 

[Tibbot]

You can DIY, it's covered in FAQ's. Don't forget to turn them off when finished.

 

[suehancock]

Thank you Tibbot I was just a bit nervous to try but have now done it. I put in 0.8 bar but when I returned from my daughters it had dropped again. I have just topped it up again to 1.8 bar and have put the heating on to check if there is any radiator leaks but there aren't. Could you explain to me please why the pressure drops?



Thank you

 

[Agile]

Look at the pressure relief valve vent which usually goes to the outside through the wall. It may be leaking.

Or it may just be air dissolving.

Tony

 

[suehancock]

Thank you. I have found the problem, I have a leak in the pipe, above the floor level, that comes from under the floor to the bathroom radiator. Looks like a call to the plumber come the morning. Have managed to stop the water flowing from the leak by turning that radiator off.

Once again thank you for the replies

Sue