by george »
Mon Mar 05, 2007 5:31 pm
WHEN I SWITCH MY CENTRAL HEATING ON THE PRESSURE GUAGE ON MY BOILER READS 3 BAR WHICH IN TURN OPENS THE PRESSURE RELEASE VALVE. THEN WHEN I SWITCH OFF THE CENTRAL HEATING THE PRESSURE DROPS TO ZERO. I DO KNOW THE PRESSURE RELEASE VALVE IS NOT STICKING OPEN. I HAVE ALSO BLED ALL THE RADIATORS BUT FOUND ONE SIDE OF A DOUBLE RADIATOR IN PLACES QUITE COOL. WOULD BE GRATEFUL FOR ANY ADVICE THANK YOU.