Press and hold spanner button for 10 seconds til it glows orange. It will say 1a in display.
Press eco repeatdely til this goes to 5a.
Press chimney sweep button, will go orange, 00 in display.
press eco once.
Press chimney sweep and hold it til you see [] in display. Let go.
Will go back to 5a, press spanner button once and will be back in normal mode.
Ta-daaaaaa :)
Bunslinger, January 2009