My mothers valliant 824E has been losing pressure over a period of time, I occasionally increase the pressure by turning a screw on the underneath of the boiler, to approx 1.5 bar.
Had a call today, to say the pressure was approx. zero bar, couldn't go round myself, so sent the wife, unfortunately she turned the screw too much, realised her error, and so switched the boiler off. I visited tonight and discovered the following: -
The pressure needle reads about four o'clock, way over the red!
I cant turn the same screw the other way, i.e. to reduce the pressure
Water is running out of the relief valve into an external drain.
There seemed to be a tap/adjustment on the relief valve, and when turned slightly, the pressure drops down to normal, but water is still being expelled.
My main question is, is it safe to use in this condition?
Is it normal that you cant reduce the mains pressure by turning the same screw that increases it?
The diverter valve was replaced 3 weeks ago (no hot water from taps), dont think this is related?
Im obviously not a plumber.
Thanks in advance.
Had a call today, to say the pressure was approx. zero bar, couldn't go round myself, so sent the wife, unfortunately she turned the screw too much, realised her error, and so switched the boiler off. I visited tonight and discovered the following: -
The pressure needle reads about four o'clock, way over the red!
I cant turn the same screw the other way, i.e. to reduce the pressure
Water is running out of the relief valve into an external drain.
There seemed to be a tap/adjustment on the relief valve, and when turned slightly, the pressure drops down to normal, but water is still being expelled.
My main question is, is it safe to use in this condition?
Is it normal that you cant reduce the mains pressure by turning the same screw that increases it?
The diverter valve was replaced 3 weeks ago (no hot water from taps), dont think this is related?
Im obviously not a plumber.
Thanks in advance.