68
T23
Series User Manual
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7
Troubleshooting
Problem: Unit will not turn on when pressing the power switch
Possible Cause:
Resolution:
Power switch was not pressed for 2 seconds
or more.
Press power switch longer.
Battery is not installed.
Check that battery is installed and close
battery cover. Battery is needed to power the
unit even when connected to a power source.
Battery needs charging (sometimes lights will
be very dim).
Recharge battery. If battery is completely
discharged then the Lights will not turn on for
1.5 hours.
Power switch disabled.
Remove and re-insert the battery.
Problem: Unit will not respond to SMS
Possible Cause:
Resolution:
GSM light is on or flashing.
Refer to GSM problem resolution.
GSM Network is slow.
Wait for SMS. Some GSM networks slow
down during peak times or when they have
equipment problems.
Unit is sleeping.
Wait for unit to wake up or activate motion
detector.
User is not authorized.
Check that user’s phone number is added to
the user list.
User is does not have a high enough
authority for the command.
Check the user’s authority with the
LISTUSER
command. T23 Series will not respond to any
unauthorised commands.
Problem: GSM light is on solid
Possible Cause:
Resolution:
No GSM signal.
Check with a mobile phone to see if there is a
signal in the area or try to call the unit to see
if you receive a ring tone.
No SIM card.
Insert working SIM card. Check in phone that
the SIM can send SMS messages.
SIM card has expired.
Check in phone that the SIM can send SMS
messages. Replace SIM card if needed.
SIM has PIN code set.
Remove PIN code by inserting SIM in your
phone and deleting the code.
SIM is warped or damaged.
Inspect SIM, clean the contacts. If re-
inserting does not help try another to see if it
will work.
Roaming not enabled.
If you are in a different country your SIM
account must have roaming enabled.
Battery is low.
Recharge the unit for 5-15 minutes and the
GSM will start working.
Unknown problem.
Remove and re-insert the battery after 1
minute.
