Issue
Why does the keypad display Fire Trouble, but does not indicate any zones in trouble?
Solution
Check the history of the control panel (Master PIN Code # 89) . If the system shows a SYSTEM FAULT 04, follow the steps below:
A ground fault condition exists on the system. There is a short to ground somewhere in the system.
Solution: Start by disconnecting the field wiring from each terminal while watching the keypad display. The keypad power light should stop flashing when the ground fault has been removed.
If a keypad is not present at the control panel, use a voltmeter to find the ground fault:
- Connect the negative lead to terminal 1 or 2 panel ground.
- Connect the positive lead to terminal 8 AUX Power.
Voltmeter should read between 6.5Vdc and 7.5Vdc. A reading that is higher or lower indicates a ground fault.
Remove the field wiring from the control panel while watching he voltmeter. When the voltage returns to the normal voltage of 6 .5Vdc to 7.5Vdc, you have found the wire that is causing the ground fault.
Part numbers DS7400X, DS7400, DS7400Xi, DS7400XIVER2, DS7400XIVER3+, DS7400XIVER4+,
