
WT200B USER MANUAL
-----------------------------------------------------------------------------------------------------------------------------------------
Page 17 of 18
6. Troubleshooting
Problem: Unit will not turn on
Possible Cause:
Resolution:
Wiring was not connected properly
Check and make sure wiring connection is in order.
Battery needs charging
Recharge battery
Problem: Unit will not respond to SMS
Possible Cause:
Resolution:
GSM antenna was not installed properly
Make WT200B connected to GSM network.
GSM Network is slow
Some GSM networks slow down during peak time or when they
have equipment problems.
Unit is sleeping
Cancel sleeping mode
Wrong password in your SMS or wrong
SMS format
Write correct password or SMS format
The SIM in WT200B has run out of credit
Replace or top up the SIM card
No SIM card
Insert a working SIM card. Check in phone that the SIM can send
SMS message.
SIM card has expired
Check in phone that the SIM can send SMS message. Replace
SIM card if needed.
SIM has PIN code set
Remove PIN code by inserting SIM in you 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.
Error connecting GSM antenna
Make sure the GSM antenna is connected to the GSM interface.
Problem: SMS received starts with ‘Last…’
Possible Cause:
Resolution:
Unit does not have clear view of the sky
Move the antenna of the unit to a location where the sky is visible.
WT200B is in an inner place
Wait for the target to come out
Battery is low
Recharge the unit and the GPS will start working.
Error connecting GPS antenna
Make sure the GPS antenna is connected to the GPS interface.
Problem: Unit Fails to Connect to Server via GPRS
Possible Cause:
Resolution:
SIM card in WT200B does not support
GPRS function
Enable SIM card GPRS function.
GPRS function of WT200B is turned off
Turn on GPRS function of WT200B.
Incorrect IP address or PORT
Get the right IP address and PORT and reset to WT200B
GSM signal is weak
Move the unit to a location with good GSM reception.
7.Contacts