EA warning on wb green star 30cdi?

The ea warninglightvwas flashing on my boiler, decided that it wouldn't be the condensate pipe as it has had the sun shining on it all day! Have emptied the reservoir as suggested on this site and that seemed to work - great nipped into shower.

However the radiators don't seem to be heating up and when I switch hot water off the numbers on the display have dropped from 60 to 35 and flash with the low pressure forwards and backwards 't'.
What's going on ? Please help!! (Pressure on dial is at 1.5 ish!)