The transformer in the ac air handler keeps huming then it pops where it burned out why?

the transformer in the ac air handler keeps huming then it pops where it burned out why?


Because you have a short circuit that needs to be traced down and repaired. Transformers are expensive so I suggest you install a inline fuse from (Radio Shack) or others to prevent the transformer from burning out while you do the repair. Fuses are much cheaper than transformers.