Problem Description Solution 
1 Power Failure 
(PWR LED Off) 
1. Please return to the ICP DAS for inspection and 
repair 
2 WLAN connection can not be 
established 
1. Make sure that the service set identifier device 
(SSID) settings are the same. 
2. Make sure Wi-Fi transmission Channel settings 
are the same. 
3. Make sure encryption is set, encryption keys are 
the same way 
4. Make sure antenna is connected 
5. Please confirm whether there are barriers on the 
scene. That could result in poor signal quality. 
3 
TCP connection can not be 
established 
 
1. Make sure WLAN connection is established 
successfully 
2. Make sure the network configuration is good 
(TCP / IP Port, Local IP, Net Mask) 
4 
How to restore factory 
default 
 
 
 
 
 
1. Power on the WF-2000 series I/O module 
2. Change the Dip-Switch position of the WF-2000 
series and to complete the following steps in 5 
seconds. 
Step1. From “OP” to “FW” position. 
Step2. From “FW” to “OP” position. 
Step3. From “OP” to “FW” position. 
Step4. From “FW” to “OP” position. 
3. When the correct implementation of the above 
steps, the Signal Strength LEDs and PWR/Wi-Fi 
LEDS of the WF-2000 series should be turn on, 
and that should be turn off after 500 ms later. 
4. Reset the power the WF-2000 series would back 
to factory defaults. 
 
Technical Support 
If you have problems about using the WF-2000 series I/O mod
ule
, 
please contact ICP DAS Product Support. 
Step1 
Step2 
Step3 
Step4