MVP3 Error 12 Failure of Safety Contactor Connection/Disconnection

MVP3 Error 12 Failure of Safetey Contactor Connection, Disconnection See long description. Power Unit Microcomputer Board checks the safety contactor status acknowledgement signal SAFE CHECK (pin 10B) matches the order SAFETY CONTACT (pin 5 B). When a change is ordered in the status of the contactor, no check is made for 80 mS. This error may also appear if a power fuse is blown. This check is done whenever the equipment is turned on. This error is RECOVERABLE for the system. Main input power has momentarily failed. In this case, the error will be corrected in a few seconds. Check if any of the power fuses are blown.