my washing machine a wf640 hotpoint has the number f-12 flashing on it .How do i stop this and get my washing machine working again.

lydia, October 2008

F12 - communication error between circuit boards.
Disconnect the power before attempting any work. Use of an RCD (plug in power breaker) is recommended.

Possibly a duff connection on one of the board connectors. Power off, remove covers, disconnect circuit board connectors and clean with toothbrush. May help to tighten them with a pair of pliers. Clean off any corrosion or crud, refit and test. Closely inspect the entire wiring loom and circuit boards, looking particularily closely at areas where the wiring touches the machine frame.
Repair and service your own washing machine. Go to www.2ndwave.co.uk/manual.html

dannyboy, October 2008

no communication between display board and control board

airkool@hotmail.co.uk, October 2008