We have a mew 21 Baystar Sport. Every so often, a high pitched beeping noise occurs. It can range from 5 to 15 beeps. We have replaced batteries in all smoke and carbon monoxide detectors. Still have beeps. We then took out the batteries to see if the beeping continues and we still have the beeping. Have checked inverter for error messages, no such luck. It is not the refrigerator, as the refrigerator beeping is much softer, subtlas beep. We have checked the audio visual components cabinet and it appears that it is not coming from that source either. Does anyone have any suggestions or similar experience? Am about ready to trade it in or sell it, as this is driving me crazy
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