Hi all ,im new here so be gentle
i have a Grant combi 90 mk 11 and it has all of a sudden stopped producing any hot water or heating . It will fire up if you turn the hot tap on but no hot water comes out and there is no heating at all ,one thing i did notice is a few times the vessel pressure drops to nothing and then a little while later will go up to about 2.5 bar even when it has only been filled to 1 bar ??
can anyone help point to what may be the problem
by the way its been in for about 4 years and apart from a problem from the factory which was sorted under warranty it has been fine oh and its oil fired
thanks in advance
i have a Grant combi 90 mk 11 and it has all of a sudden stopped producing any hot water or heating . It will fire up if you turn the hot tap on but no hot water comes out and there is no heating at all ,one thing i did notice is a few times the vessel pressure drops to nothing and then a little while later will go up to about 2.5 bar even when it has only been filled to 1 bar ??
can anyone help point to what may be the problem
by the way its been in for about 4 years and apart from a problem from the factory which was sorted under warranty it has been fine oh and its oil fired
thanks in advance