Harvey,
I had the same problem. To clear the error you need to close the machine, hit heated dry then normal wash, then heated dry-normal wash again. All lights will light up. Then hit cancel. Once the cancel light goes out, about 2 minutes, you should be good to go. You get this error code when the water temp entering the dishwasher is too low. Try running your sink on hot for a few seconds before starting your dishwasher or turning up your water heater a few degrees.
Missi, May 2006