Programming Manual of FC2005/FC901
64|63 A6V10333724_b_en_--
APPENDIX 2 TROUBLE-SHOOTING
1. FXS901-U2/U3 reports Version Mismatch
Status: FXS901-U2/U3 reports Version Mismatch when user performs download Firmware or Configuration
or upload Configuration.
Possible Causes: The sales channel of FXS901-U2/U3 and FC2005/FC901 is incompatible. You can not
use FXS901-U2 to communicate with FC901 and vice versa.
Handling: Find a compatible version FXS901-U2/U3 and try again.
2. FXS901-U2/U3 reports Communication Lost during downloading Firmware or Configuration or upload
Configuration
Status: FXS901-U2/U3 reports Communication Lost while downloading Firmware or Configuration or upload
Configuration.
Possible Causes: The physical connection between Panel and FXS901-U2/U3 is disturbed. Or the panel is
disturbed.
Handling: If the downloading Configuration is disturbed, user should check the USB cable and panel status,
and then download it again. If the downloading firmware is disturbed, user can contact local agent for a
recovery.
3. FXS901-U2/U3 reports Panel No Response when start to download Configuration or upload
Configuration
Status: FXS901-U2/U3 reports Panel no response when start to download Configuration or upload
Configuration.
Possible Causes: The USB connection is detected but not works normally.
Handling: Re-plug the USB cable and try again.
4. USB port open error when start to download Configuration or upload Configuration
Status: FXS901-U2/U3 reports USB port open error when user performs download configuration or upload
configuration.
Possible Causes: 1. The physical connection between Panel and FXS901-U2/U3 is disturbed. 2. The
panel is not powered up.
Handling: 1. Check the USB cable and try it again. 2. If the panel is not powered up, power it up and try again
after it works in normal status.
5. Communication Lost when start to download firmware
Status: FXS901-U2/U3 reports USB port open error when user performs download firmware.
Possible Causes: 1. The physical connection between Panel and FXS901-U2/U3 is disturbed. 2. The panel
is not powered up.
Handling: 1. Check the USB cable and try it again. 2. If the panel is not powered up, power it up and try again
after it works in normal status.
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