I appreciate your post, Maria!

I see that your Kelvinator air conditioner is displaying an error code of “E5” and you would like to the meaning of that error code. I was unable to locate an “E5” error code it might be an error with the display. I was however able to locate an error code of “ES” and that stands for an evaporator thermistor error. This could be a possible problem with your control panel, thermistor, or a wiring harness. This could be a possible miscommunication within your air conditioner and you may be able to perform a reset. In order to reset your air conditioner you would need to unplug it and press the reset button, then press the test button, and plug your air conditioner back in. If that does not correct your issue I would recommend seeking assistance from a professional technician for proper repairs. Best of luck! –OOS