We dont use the CH much (its oil fired BTW). In fact it hasnt been on for over 12 months.
I have just drained down the system to fit a new rad on one of the down stairs room (its the lower rad in the house).
All connected now but when i fired up the boiler some of the down stairs rads (new one included) dont heat up and the CH water boils over into the header tank.
Any ideas? it was fine last time it was fired up.
I have just drained down the system to fit a new rad on one of the down stairs room (its the lower rad in the house).
All connected now but when i fired up the boiler some of the down stairs rads (new one included) dont heat up and the CH water boils over into the header tank.
Any ideas? it was fine last time it was fired up.