Nothing lights up when it starts to beep. its not the filter the timer does not get used but may have been accidently pushed. it says 0.5. seems like it beeps every 15-20 minutes.
Hello Pete T - From what you have described the air conditioner possibly have a defective power/control board or faulty plug. I would suggest contacting a professional to accurately diagnose and repair the unit.
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The sleep button keeps beeping and lighting up even when it is not activated.
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