Inspected & cleaned furnace. Checked all voltages and amp draw, inspected all safety's, no gas leaks or Carbon monoxide found, static psi is correct, cleared drain lines, inspected Evaporater to find header plate rusted out possibly leaking also found secondary pan rusted with no overflow protection. Found blower run capacitor weak this cause blower motor to fail or over amp and short out control board Cleaned work are around system. System is operational and safe to use at this time.