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My Worcester greenstarHE shows red light flashing and FO code & doesnt fire?

Just returned from a holiday and found CH doesnt work. Red light next to the triangle flashes and FO code flashes in the display. No hot water or central heating. What can I do to clear the fault?
k patel, March 2011
Thank you brian, but that does not work. I actually saw some answers on this site and cleared the palstic container and also managed to clear the FO warning sign, but still it does not fire.
The display reads 10, but no hot water or CH yet. Any more suggestions please?

K Patel, March 2011
try switching boiler off and on at the switch near the boiler

brian, March 2011
I appreciate and thank you in advance for your kind help.

K Patel, March 2011
link Click here to see other fixes for Worcester.