Even AC units run on gas have numerous electrical components, each of which can go awry due to damage, old age, or faulty product parts. Wires within AC systems are used to safely route power to and from various components. But when these wires become damaged or loose, things can go wrong quick, leading to poor temperature control, erratic AC cycles, blowing fuses or tripping breakers, shorts and even fire.
Given the danger involved with electricity, it is typically never wise to tackle any AC wiring issues on your own. With the one exception being the wires to and from your thermostat. Generally, these are very low voltage.
Faulty Wiring: Excessive current or fluctuating currents such as during a power surge can ‘short out’ a wire, damaging electrical components and even creating a fire hazard.
Loose Connections: Wires can become dislodged, disconnected or loose, causing a partial or complete reduction in the ability to send the current to its destination, causing malfunctioning.
Exposed Wires: Exposed wires are a safety hazard and should be addressed by a professional.
Damaged Wires: Whether from physical impact or trauma, or due to pests, damage to wires can cause fraying and disconnections. Mice, rats and squirrels are notorious for chewing through wires, and are often the cause of the problem.
Unless you’re a certified electrician, attempting to deal with electrical issues of any kind can do more harm than good. Apart from not knowing local building codes, improper wiring can pose a serious fire hazard.