Will not turn back on 3 beeps

Was it very iced up? That can cause bad temperature registration. Also turning it off for an extended period resets the electronics. Monitor it for a week, then order the beef.

Sounds like a GPS locator issue! JUST KIDDING!

This site may help. There are just too many electronic anomalies that can cause this issue. I got lucky once by asking if they just had their dog RFID tagged and spayed or neutered. Turns out they did that week. The ID tag was on the same frequency as their dryer buzzer. They put a gum wrapper on the front of buzzer and problem solved.
https://www.repairclinic.com/RepairHelp/Freezer-Repair-Help

I’m happy to assist further over the phone at https://www.6ya.com/expert/david_dc2f9e0a44104720

The machine, all in one, not indoor/outdoor split type, will make beeping sound when something is wrong and stops working until it is turned off and turned back on. Some times the machine needs to be reset with the power on, covers removed, reset button inside on electronic mother board.
The ice machine covers have instructions and information on beeping sounds.

Do not use test button. It test the functions of the board only. You have another issue. Need to know the number of beeps. Usually beeps a certain number of times, then hesitates,then beeps again.

sounds like you may have more than one issue. Tapping the float switch indicates that it is sticking. This will keep the water coming in and the unit will not go into it's freeze mode. Go to the Hoshizaki web site for how to remove and clean. It's really not that hard. If you can't find it, I'll walk you thru.
With the machine turned off, is there still water running? IF so, the water valve is also stuck in the open position and letting water in. This could cause it to have long freeze cycles and possibly freeze up.
Start there and let me know if you need any more help.
http://www.hoshizakiamerica.com/techsupport/tech.asp?

Unit was in the freeze cycle for 60 minutes and the freeze back up timer took over the process. In most all cases, either a stuck float switch or a leaking water valve.
Hope this helps.

It is probably the control board and since it's new it's still under warranty so a certified Frigidaire repair man will fix it without charge. There should be a telephone number with the paperwork you received when you bought it.

3 beeps means the machine has ran two 1 hour cycles back to back to make ice an average timeframe for ice making is 25-30 min. Could be several issues, float switch dirty, water valve leaking by, dirty spray tubes, dirty evap., then go to refrigeration Expansion valve, compressor, charge, Hot gas valve leaking by,,,,,

In most cases, there is a chart on the inside of the front cover. It may also be located on the side of the box where the control circuit board is located. It will tell you what the 3 beeps mean. Hoshi has a great tech support. It's worth the wait.

put an amp probe on common wire at compressor and see what amps are when it tries to start. 40 to 60 is mechancially locked up compressor. kill power and test start and run capacitors. there is an thermal temp over load on the compressor that opens when comp gets hot from trying to start. gently remove and look for cracks or burned looking. . i saw one this week doing exact same and i have ordered the oem compressor start cap realy and run cap and drier and will put in all new gas. be sure to allow sufficient time when switched to ice for it to get to ref cycle, it may take 5 minutes starting with water purge, then fill, etc. good luck, call hoshizaki dist they are usually pretty helpful if you need a auth service rep in you area. i think they are three years warrantied!