ISV-100w contant beeping

I just bought this unit and after it has been on for less than a minute, it will contantly beep. The unit seems to be working fine and still bringing the water up to temp, but the beeping won’t stop.

Water level is fine.

Nothing in the manual says anything. What is going on?

Sorry for the delay in responding.
Normally, an alarm sound is accompanied by an alarm code. If everything is working properly but the device is beeping, please send a video of the issue and your order information to support@inkbird.com. They will make a further check.
Thanks.