error c140 dispite the bowl being correctly installed

With the bowl correctly installed I get c140 error code when I try and start the blades spinning.

This problem is intermittent as one day it will work and another it won't and only time seems to fix it.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0