low pressure means your system needs topping up, on combi's this is done via the filling loop pipe, most systems you refill cold to around the 1 to 1.5 bar mark. if the pressure drops again you will need to find out WHY. ?
wirecuttterman
December 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
