What was found
RT FIRE LOOP STUCK IN TEST MODE. INSPECTED FIRE LOOP NO DEFECTS FOUND, INSPECTED CONTROLLER AND C/B, NO DEFECTS NOTED, DISCONNECTED LOOP AT FIREWALL, FIRE LOOP LIGHT REMAINED ON, RECONNECTED LOOP AT FIREWALL LIGHT REMAINED ON. FOUND FIRE DETECTION CONTROL BOX BAD REPLACED IT WITH NEW ONE PN ON/OFF 477-90005, SN ON 9235-001 SN OFF 8416-011.