System worked Great for years. After installing window sensors I noticed that the my LCD-500z keypads had the TROUBLE light on. Pressed *2 and the display reads "Zone
Fault". Pressed * again and display reads "There are no zone faults" So to see if the system is catching the faults I remove 2 of the sensors for there Z inputs and the system did show the open zones as a fault. The system still works great but the TROUBLE light will not go off. Please HELP ... Forum: diplofix.com - Da: Coop - Data: 2009-02-07 19:01:26