Boiler Pressure Drop

[mick4810]

Hi I am asking this for a work mate neither of us are plumbers.

Boiler runs at 0.5bar normally. Just recently the pressure drops and boiler cuts out after 10 minutes. We cant see any leaks.There is a slight leak from overflow pipe. Boiler is about 18 months old and plumber who installed it doesn't seam to know what to do.

Any help would be much appreciated.

Thanks

Mick

 

[Scott_D]

What boiler is it?
18 months would probably still be under warranty (if it was registered)

 

[Chalked]

Slight leak from overflow! That's the safety vent from the pressure release valve. A small amount from that is all it needs to drop the pressure.
there are a few reasons and faults for this, but you need a gas safe registered engineer to find out which and to fix.
hope you can find someone this close to Christmas.
please don't try it yourself as you need to understand why it's dripping.

merry christmas

 

[mick4810]

Thank you both for your replies he will get plumber to sort it

Mick

 

[gimmer]

small amounts of grit get under the seating of the prv you could try releasing the pressure which may flush out the debris. you will need to repressurise the system. once it stops leave this alone