Timer

Hi icetea22,

Thanks for connecting with us here in Apple Support Communities. Is your iPhone on silent mode? If so, try turning it off as this may help to address the issue you're facing. See: How to put your iPhone on vibrate, ring, or silent mode - Apple Support

Turn Ring/Silent mode on or off on your iPhone

In Ring mode, you hear ringtones and alerts. In Silent mode, you don't, but your iPhone can still play sounds, like when you play music or videos.

Use Ring mode

 To put your iPhone in Ring mode, move the switch so that orange isn't showing. 

Use Silent mode

To put your iPhone in Silent mode, move the switch so that orange is showing. 

Let's also have you try setting a new alarm to see if that one will sound.

Keep us posted on the result.

Thanks.