First, ensure that the alarm is properly powered and that there are no visible signs of damage to the unit or its wiring. Next, check if the alarm’s test button is functioning correctly by pressing and holding it for a few seconds. If the alarm still doesn’t sound, inspect the connections to ensure they are secure and free from corrosion. Additionally, check if the alarm’s volume settings are properly configured. If none of these steps resolve the issue, it’s recommended to contact a qualified technician for further assistance or consider replacing the unit.