Title:
How to Confirm Fault Type When
Control Panel in Zone Fault Status
Version:
v1.0
Date:
7/11/201
7
Product:
Alarm Device
Page:
2 of 3
Detail Steps
Step 1: Check whether the Detector is in Alarm Status
If detector is in alarm status, eliminate all the factors that will cause alarm for detector.
If detecor still can not go back to normal status, we can confirm it is detector fault; If
detector is in normal status, but control panel is still in “zone fault”, go on next
checking step.
Step 2: Connect Corresponding End of Line Resistor to Terminal Z and G for the
Fault Zone
If “Zone Fault” disappears, we can confirm it is a wiring fault between detector and
control panel. Check wire poor contact, short circuit, open circuit between detector and
control, or signal cable is too close to power cable. After all these wiring issue have
checked, but control panel is still in “zone fault” status, go on next step.
Step 3: Measure Voltage between Z and G for the Fault Zone
According to the chart below, if voltage between Z and G is out of normal range, we
can confirm it is a control panel fault. Please ask
technical support team
for further
help.
Control Panel Input
Voltage(V)
EOL Resistor(
Ω
)
Voltage between Z and G
Min
Max
14.3
2.2K
5.6
9.68
3.3K
7.24
11.32
5.6K
8.58
12.66
8.2K
9.34
12.55
10.5
2.2K
4.04
6.98
3.3K
5.21
8.15
5.6K
6.18
9.12
8.2K
6.73
9.05
Note
：
This voltage range is measured without tamper-proof EOL resistor
