My Worcester Bosch 28 CDi combi boilers losing pressure. I tried re-pressurizing the expansion tank and re-filling. Pressure up to 1.5 Bar. When CH came on the pressure went up to about 1.9. Over the night time when the boiler goes of the pressure gauge slowly drops to almost nothing. Boiler still comes on in the morning and pressure goes up a little but not up to 1.0 bar.
Can't find any leaks.
Do I need to re- seat my PRV?
Any ideas anyone?
Thanks
Can't find any leaks.
Do I need to re- seat my PRV?
Any ideas anyone?
Thanks