I've got a Whirlpool Duet front load washer model GHW9100LQ. Occasionally the machine will stop mid washing cycle and start beeping displaying an error. Today it said "F" "09". Not sure what it means, but you can usually cancel the cycle and start over. I'd like to find out what this code and others mean. Consulting the user manual and Whirlpool websites identifies these "F" variables 4-16 as electrical problems. Where can I get a list of the F error codes and what they mean?