What faults can cause a CRITICAL ALARM message on the alarm page?

What faults can cause a CRITICAL ALARM message on the alarm page?What faults can cause a CRITICAL ALARM message on the alarm page?What faults can cause a CRITICAL ALARM message on the alarm page?What faults can cause a CRITICAL ALARM message on the alarm page?What faults can cause a CRITICAL ALARM message on the alarm page?What faults can cause a CRITICAL ALARM message on the alarm page?