Good news..just resolved it myself.
Plugged the charger in to the mains....got red error light on for the charger...pushed the "o" button and then the "i" button...suddenly the light went from red to green...
Problem solved...car now charging without any issue.
Seems the bl...dy charger went into some "silly mode" for some strange reason...anyhow, now solved.
Hope this helps someone in similar situation.
This is the first time in 3 years I came across this situation.