okay, i tired the procedure where you turn machine off, turn the main power switch off and unplug machine for at least a minute. turn machine on again. it is supposed to be the solution to clear the error 8 problem. after repeating about 10 times on a jura f70 i couldn't wait any longer. tried taking the capresso impressa to the jura z5 doctor - for fixes. the doc fixes all coffee makers but the service charge started at $200 and that was just to tell me what it was going to take to repair the darn machine. ended ordering the tool and spent a weekend, and solved the error 8 problem for a fraction of the cost.