The green lock LED stays lit and I can't start he unit. I've tried the various reset procedures, pushing heat/high temp, normal wash/high temp and get blinking LEDs above the Heavy Wash and Normal Wash buttons, but they stop and the Lock LED comes back on. I've pushed and held every button for ten or more seconds in various sequences. I've unplugged it for several hours while I praised the SEARS god. I seem to have this problem whenever the outside humidity is high. I don't have (and hate) air conditioning. Anyone have a solution?

Here are some manuals: https://dl.dropboxusercontent.com/u/8010163/Kenmore_Ultrawash_Dishwasher.pdf
https://dl.dropboxusercontent.com/u/8010163/Whirlpool_Dishwasher_Service_manual.pdf
https://dl.dropboxusercontent.com/u/8010163/Whirlpool_Kenmore%20Dishwashers.zip
https://dl.dropboxusercontent.com/u/8010163/Electrical%20Theory%20and%20Diagnosis%20of%20Major %20Appliances%20Service%20Manual.pdf
https://dl.dropboxusercontent.com/u/8010163/Electronics%20and%20Electrical%20Troubleshooting%2 0and%20Repair%20Handbook.pdf