What may happen to an air-conditioner starting capacitor if it is exposed to constant line voltage?

An air-conditioner starting capacitor is designed to handle specific voltage levels and withstand operational conditions. However, if it is subjected to constant line voltage beyond its rated capacity, it can lead to a malfunction. Constant exposure to excessive voltage can cause the internal components of the capacitor to break down, resulting in overheating. When the capacitor overheats, it can create pressure buildup inside the casing. If this pressure exceeds the design limits of the capacitor, it can lead to a catastrophic failure, which may involve rupturing or exploding.

This failure mechanism underscores the importance of using capacitors that are rated for the specific voltage levels present in the system. Proper voltage regulation and adhering to manufacturer specifications are vital to prevent such failures, which can cause safety hazards and damage to the air-conditioning unit.