Repair when you can Equipment
This would cause the resistor temperature to rise to a point where it will melt and possibly ignite the plastic blower housing to which it is mounted.
The evaporator utilizes a power resistor to regulate blower speed. Should a short occur in the "low or medium speed" circuit while the blower is in high speed, the short will cause the supply voltage to feedback through the resistor to ground, not drawing enough current to trip the fuse.
What to do: Book it in at your next service. There is no deadline and no charge.
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Repair when you can Equipment adaptive/mobility
The wheelchair may move during lift operation and the unsecured occupant, could be injured.
The wheelchair lifts were to be equipped with a restraint buckle that has an interlock feature designed to prevent the lift from operating if the buckle is not latched. In the recalled buses, however, the interlock feature may not operate properly and the lift may operate even when the buckle is not latched.
What to do: Book it in at your next service. There is no deadline and no charge.