Hi all - the original problem was a combination of the water pressure decreasing sometimes and increasing other times, both resulting in the boiler making a 'click' sound & the pilot light going out within an hour or so.
We have bled all radiators and cannot see any visible signs of leaking at the Glow-worm boiler or any of the radiators. We suspect the increasing pressure problem may be caused by a blockage in the system somewhere in the boiler or a radiator(s).
A plumber cleaned out the system & fitted an inhibitor to prevent the system from clogging up in future, however...
Now the boiler runs normally at about 1 bar of pressure, with the pilot light lit & hot water flowing fine. When the central heating is switched on, the pilot light flame increases as usual & the radiators begin to warm-up. The water pressure increases gradually to 2 bar after 10-15 mins, the boiler makes a 'click' sound & the pilot light goes out which has the knock-on effect of no hot water (obviously). So we have to re-ignite the pilot light to get the hot water working again, but the cycle begins again if we switch on the central heating. Also, even when the pilot light is lit as normal, there sometimes is no hot water. On closer inspection, we notice that although the pilot light is on, it's not fully lit to heat the water running out of the tap.
Before we consider getting another plumber out, can anyone offer any advice on this please?
It's a Glow Worm Compact 80p Fanned Flue Combi boiler with Honeywell gas control (about 10 years old).
Thanks
Scott
We have bled all radiators and cannot see any visible signs of leaking at the Glow-worm boiler or any of the radiators. We suspect the increasing pressure problem may be caused by a blockage in the system somewhere in the boiler or a radiator(s).
A plumber cleaned out the system & fitted an inhibitor to prevent the system from clogging up in future, however...
Now the boiler runs normally at about 1 bar of pressure, with the pilot light lit & hot water flowing fine. When the central heating is switched on, the pilot light flame increases as usual & the radiators begin to warm-up. The water pressure increases gradually to 2 bar after 10-15 mins, the boiler makes a 'click' sound & the pilot light goes out which has the knock-on effect of no hot water (obviously). So we have to re-ignite the pilot light to get the hot water working again, but the cycle begins again if we switch on the central heating. Also, even when the pilot light is lit as normal, there sometimes is no hot water. On closer inspection, we notice that although the pilot light is on, it's not fully lit to heat the water running out of the tap.
Before we consider getting another plumber out, can anyone offer any advice on this please?
It's a Glow Worm Compact 80p Fanned Flue Combi boiler with Honeywell gas control (about 10 years old).
Thanks
Scott