Take the top of and check all the connections on the back of the module are secure and none have come loose. It takes just seconds to take the top of and check this. For example if you moved the machine without transit bolts something may have shaken loose in the van over a bump and is causing the circuits to go haywire. Make sure you do it with the plug out of the wall. Let me know how you get on eh ?
Cochese
February 2010