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Section 6: Troubleshooting Guide
Blue LED Status
(Normal Mode)
What it means: Wireless Communicator Status/Communication Indicator
Blue LED
ON
When used as a backup communicator, the blue LED will be ON when there is a no phone line connected to the
LE4020/LE4020CF TIP and RING, or the line voltage goes below 2.8VDC.
Blue LED
OFF
A good phone line is connected to the LE4020/LE4020CF. (more than 2.8 VDC detected across the LE4020/LE4020CF
TIP and RING terminals).
Blue LED
FLASHING
The blue LED will flash one time when the LE4020/LE4020CF transmits a signal and two times when a kiss-off is
received.
x of
Flashes
Trouble Type
Trouble Notes
Red Blue
On
On
No Signal Strength
l
Verify SIM card is activated.
l
Ensure the antenna cable is plugged securely into the radio connector.
l
If the SIM is active, connect a battery to the unit and test various locations for
good/excellent signal strength.
l
Connect an antenna extension kit (LTE-15ANT, LTE-25ANT, LTE-50ANT).
1
Off Wireless Network Trouble
l
Ensure the SIM card has been activated.
l
The antenna cable should be plugged securely into the radio connector.
l
Ensure there is good signal strength (at least one green light ON).
l
Verify the installation area is not experiencing a network outage.
2
Off Battery Trouble
l
If a battery is not used in the installation, ensure that the "Internal Battery Connected"
is not selected in C24 Communications.
l
If a battery is used in the installation, verify the battery is connected properly
l
Measure the battery under load and verify it is charged to at least 12.5VDC. If not,
wait at least 1 hour for the battery to charge.
l
Remove the battery and measure the voltage; the voltage should be at least 12VDC.
l
Verify the input DC supply is rated at 13.8VDC @ 180mA minimum.
l
Replace battery
3
Off Input Power Trouble
l
Ensure the power source connected to the LE4020/LE4020CF is providing 13.8VDC
to 24VDC@ 180mA.
1
Flash Insufficient Signal Strength
l
Ensure the antenna cable is plugged securely into the radio connector.
l
If the SIM is active, connect a battery to the unit and test various locations for
good/excellent signal strength.
l
Connect an antenna extension kit (LTE-15ANT, LTE-25ANT, LTE-50ANT)
2
Flash Not Used
3
Flash
C24 Communications Con-
figurations Trouble
l
Ensure the SIM card is activated and correctly initialized through C24 Com-
munications.
1
On Radio/SIM Trouble
l
Ensure the SIM Card is inserted correctly and firmly.
l
Ensure the antenna cable is plugged securely into the radio connector.
2
On Receiver Not Available Trouble
l
Contact the monitoring station to verify that the LE4020/LE4020CF programming is
correct (port, IP address, DNIS).
l
Contact your central station to verify they are not experiencing any receiver issues.
3
On Supervision Trouble
l
Contact your central station to verify they are not experiencing any receiver issues.
4
On Tamper Trouble
l
Ensure the front cover is secured and the case tamper is closed.
The Red light will flash to indicate various trouble conditions outlined previously. If multiple trouble con-
ditions are present, the red light will flash according to the highest priority trouble. For example, if both a
LE4020/LE4020CF wireless network trouble (one flash) and a low battery trouble (two flashes) are present; the