During a wash cycle a machine making any form of grinding, knocking, or buzzing noise is a major red flag and should be checked as soon as possible. These noises suggest the possibility of defective bearings, worn out spray arms, or deteriorating circulation pumps. If these issues are ignored, there is a possibility of much more expensive repairs or possible water damage in the kitchen. Our trained professionals determine the exact cause by checking the motor, fan, and other parts of the machine that are mobile.