This isn't in the manual which only mentions F4 to F15. After switching on the display goes to "F18" after a few minutes and refuses to start.

The machine is about 4 years old and recently we had a problem with the concrete weight in the top breaking into two. Generally no other problems. Anybody any ideas?

Thanks.

DJGraham, April 2005

Yes, you're right. I opened the top again and found the concrete had fragmented more - one piece had actually embedded itself into the back of the control unit and dislodged and broken some bits.

Time for another one...

Thanks for the quick response.

DJGraham, April 2005

the code indicate a failure in the control unit so engineer or scrap just make sure none of the wire were damaged or have come loose since the weight broke

aa, April 2005