I have the same error code on my Indesit WIE 147 washing machine. Everything works fine I might add.
I got my code by starting a cycle and holding down the middle function button until the led underneath it flashed (Indicating that the function was not available on that particular cycle).
Now instead of the countdown timer on the display during the cycle I just get -con indicated.
Someone on here did say "-con meant no conditioner or something) but I always use that.
I will see what I can find out.
Chris
August 2006