MICRO BIRD recall on G5 COMMERCIAL BUSMBII COMMERCIAL BUS and 1 more model

On certain vehicles equipped with Trans Air TA 73 evaporators, should an electrical short occur in the "low or medium speed" circuit of the blower power resistor, while the blower is in high speed, the short could cause the supply voltage to feedback through the resistor to ground, not drawing enough current to trip the fuse, but causing the resistor temperature to rise to a point where it will melt and possibly ignite the plastic blower housing to which it is mounted. In some cases, the overheating could cause a vehicle fire which could result in property damage and/or personal injury. Correction: Dealers will install a fuse link to both blower resistors.