I am getting a F-08 message on my Hotpoint WD865A?

I am getting a F-08 message coming up on the screen of my Hotpoint WD865A. Admittedly I did put a little extra liquid in than I normally do but there was a lot of foam inside the drum and it wouldn't rinse away. I have taken the clothes out of the machine and put it on a rinse cycle while empty to see if that would help but still I keep getting the F-08 message coming up. Can anyone help?