Have you set up the printer on the wi fi network? Please set that, if not yet done.
If you need steps to set up the printer on network, let me know I will send the steps.
Then on the Printer Home Screen, Click on the Set UP Icon > Go to Quite Mode > Keep the Quite Mode On.
Then observe the printer.
I would also request you to check if there is any other electronic device kept near the printer that might be producing the beep sound. If there is any other device which you can power off, power off and then check for the noise.
Although I am an HP employee, I am speaking for myself and not for HP.
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