Thank you for your inquiry, Angela Babin!
From my understanding your Frigidaire air conditioner is displaying an error code "H5". Normally, the error code "H5" stands for heater thermistor error. I would recommend performing a reset on your air conditioner by unplugging it for ten minutes. If that does not help correct the error code it could be a possible problem with your thermistor or control board. I hope this is helpfully. -Matt
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