Hi there,
Please can any body shed some light on this problem ..... I fill the boiler to 1.2 bar and increase thermostat and the boiler fires up and pressure increses to around 1.4 bar works for several hours then when it switches off on timer and when you awake there is no pressure it's dropped back to 0.5 bar (cut off limit).
Called an engineer and he said it's the PRV or blow valve which he replaced as it was dripping constantly then quickly scarpered, I watched the boiler and noticed the pressure had gone from 1.4 bar that he'd set it to up to 2.6 bar now this worried me as it's a big increase and the PRV blows at 3 bar.
Now I'm back at square 1 with the same problem of the boiler losing pressure when it switches off. Checked the system no leaks found and no air in rads but PRV dripping again.
Any pointers please ?
Please can any body shed some light on this problem ..... I fill the boiler to 1.2 bar and increase thermostat and the boiler fires up and pressure increses to around 1.4 bar works for several hours then when it switches off on timer and when you awake there is no pressure it's dropped back to 0.5 bar (cut off limit).
Called an engineer and he said it's the PRV or blow valve which he replaced as it was dripping constantly then quickly scarpered, I watched the boiler and noticed the pressure had gone from 1.4 bar that he'd set it to up to 2.6 bar now this worried me as it's a big increase and the PRV blows at 3 bar.
Now I'm back at square 1 with the same problem of the boiler losing pressure when it switches off. Checked the system no leaks found and no air in rads but PRV dripping again.
Any pointers please ?