Recent content by HARBISON

Have looked at the pump & turned it down to low speed (1st setting) from 2nd setting which it was on.this has stopped the water overflowing into the expansion tank. when it was overflowing into the expansion tank the water never overflowed outside ANY VIEWS ON THE MID POSITION VALVE HAVING A...

any ideas, we have a classic NF50 gas boiler with pumped hot water & heating with a 3 way valve. Have just found out that that overflow pipe flowing into the small expansion tank is overflowing with hot water. if i turn the cylinderstat down the pump cuts out & the water stops overflowing. if...