Hi,
I wonder if you can help me diagnose this problem.
I have a Vaillant VCW GB 242 EH.
It worked fine until recently when I've been having problems with the pressure and hot water. I'm not if they are related.
The pressure used to sit around 1 bar when cold and rise to about 1.5 when hot. Now it sits at around 2.5 and rises to just over 3. I tried bleeding some water out of the radiators until the pressure came back down to 1 but after firing up the boiler it returned to 2.5 when cold.
After using hot water the boiler remains on and continues to fire until the whole boiler is turned off. I don't think my boiler has any kind of stay warm option so as far as I can tell it's just wasting gas. CH is fine and switches off without problems.
The only thing I can think of that may have had some bearing on this is that the water was turned off at street level while some work was done not long before this started.
Any suggestions would be much appreciated.
I wonder if you can help me diagnose this problem.
I have a Vaillant VCW GB 242 EH.
It worked fine until recently when I've been having problems with the pressure and hot water. I'm not if they are related.
The pressure used to sit around 1 bar when cold and rise to about 1.5 when hot. Now it sits at around 2.5 and rises to just over 3. I tried bleeding some water out of the radiators until the pressure came back down to 1 but after firing up the boiler it returned to 2.5 when cold.
After using hot water the boiler remains on and continues to fire until the whole boiler is turned off. I don't think my boiler has any kind of stay warm option so as far as I can tell it's just wasting gas. CH is fine and switches off without problems.
The only thing I can think of that may have had some bearing on this is that the water was turned off at street level while some work was done not long before this started.
Any suggestions would be much appreciated.
