HOOVER AL 130 FAULT CODE 2?

HI THERE I AM HAVING A PROBLEM WITH MY HOOVER AL 130
IT IS DISPLAYING ERROR CODE 2 IT HAS HAD A NEW BOARD FITTED AS IT WAS NOT WORKING AT ALL BUT STILL DOES NOT WORK ON VERY HOT EG WHITES PROGRAMS THERE IS ALSO A LOUD BUZZING NOISE UNTIL IT ACCESSES SELECTED PROGRAM
ANY HELP WOULD BE APPRECIATED THANKS
COLIN