ALPHA CB24
Hi
About 2 months ago, I bled the upstairs radiators.
A lot of air came out, so they needed topping up.
I topped up via the combi boiler - and from that point on, my Pressure Gauge drops to zero around every 2 hours - ONLY WHEN THE C/H IS NOT ON.
At first I thought it was a leak under a floorboard - so I waited for the leak to start somewhere. Nothing.
BUT I have just noticed that my overflow pipe is soaking wet underneath, because it's constantly dripping.
Someone said that by bleeding/topping up, I might has disturbed a bit of muck which has stuck in the pressure relief valve. Yesterday I kept turning the valve to release the water and topping up. This hasn't helped.
I know this seems a silly question - but could it be anything else other than the "3 BAR (red) Valve"?
I ask this 'cause I've read somewhere that they rarely breakdown.
This boiler is around 8 years old.
One other point, when the central heating is on - the pressure drops very slowly. When the C/H is on the pressure gauge reaches 2 to 2.5 bar.
I finally found the expansion vessel and tried to pump it up - but it would only take two strokes (car foot pump).
Any help or pointers would really be appreciated.
Thanks in advance, Stephen
Hi
About 2 months ago, I bled the upstairs radiators.
A lot of air came out, so they needed topping up.
I topped up via the combi boiler - and from that point on, my Pressure Gauge drops to zero around every 2 hours - ONLY WHEN THE C/H IS NOT ON.
At first I thought it was a leak under a floorboard - so I waited for the leak to start somewhere. Nothing.
BUT I have just noticed that my overflow pipe is soaking wet underneath, because it's constantly dripping.
Someone said that by bleeding/topping up, I might has disturbed a bit of muck which has stuck in the pressure relief valve. Yesterday I kept turning the valve to release the water and topping up. This hasn't helped.
I know this seems a silly question - but could it be anything else other than the "3 BAR (red) Valve"?
I ask this 'cause I've read somewhere that they rarely breakdown.
This boiler is around 8 years old.
One other point, when the central heating is on - the pressure drops very slowly. When the C/H is on the pressure gauge reaches 2 to 2.5 bar.
I finally found the expansion vessel and tried to pump it up - but it would only take two strokes (car foot pump).
Any help or pointers would really be appreciated.
Thanks in advance, Stephen