TL / TL LCD / SL / SL LCD / SL-INF / CL / HydroShift II / Strimer Wireless - LIAN LI is a Leading Provider of PC Cases

1.2. Ensure you’re using the latest L-Connect 3 version. If not, update and test again, and if restart service & UI, and restart LCD button doesn’t fix move to next step.

1.3. If your fans previously worked, check Device Manager:

1.3.1. If the device appears,
- 1.3.1.1 Turn off pc, unplug the working SL/TL LCD’s USB, and only have non-working ones connected.
- 1.3.1.2 Turn on PC, uninstall L-Connect 3, disable “Fast Startup” in windows, uninstall the SL/TL wireless LCD from Device Manager (SL might name as SLV3)
- 1.3.1.3 Shut down, unplug issued one LCD fan’s USB from the motherboard, wait 3 sec, then re-plug USB back.
- 1.3.1.4 Reinstall L-Connect 3 (make sure to install latest beta)

1.3.2. If not visible, remove and uninstall the fan group from the PC, plug the USB of that group directly to MB 2.0 internal port, but only connect the fan that is not responding, and if then:
- 1.3.2.1. That fan is still not detected, contact us via “form” with this result.
- 1.3.2.2. That fan turns to unknown device, contact us via “form” with this result.
- 1.3.2.3. That fan gets detected, then connect rest of fans after that fan to check again if rest of the LCDs are all detected. And, if with new shuffled order, the new third fan still not-responding and not detected, contact us via “form” with this result.

1.4. If you have a new build, and the TL/SL Wireless LCD Fans Are Uncontrollable (e.g. 2 or 3 fans, one screen fails to respond):

1.4.1. If the fans are detected in Device Manager, repeat the steps starting from step 1.1.
1.4.2. If the fans are not detected in Device manager:
- 1.4.2.1. Make sure your motherboard chipset drivers and Windows updates are fully up to date.
- 1.4.2.2. It’s likely that too many devices are connected to the same USB header. In this case, use USB splitters or reduce device count. For users with the EDGE Hub, we recommend connecting no more than 6 devices per hub, and plugging the hub into the rear I/O USB-A port on the motherboard.
- 1.4.2.3. If this doesn’t work, please begin from step 1.1. and check power stability.

If a group of TL LCD Wireless is has 1 or 2 fans not showing lighting / screen not detected in device manager/ screen not lit up:

2.1 Check the back of the fan hub and check the manufactured date.

2.2 If the fan is manufactured between April 12th and May 15th of 2025

Then the fans potentially have bad pogo-pin contact.
Contact us via “form” with this result, and RMA the entire fan group.
If the fan is not manufactured between April 12th and Mayth of 2025
Follow step 1.

3. LCD Appears in L Wireless Sync Utility but Won’t Respond

3.1. Check if power is supplied from included SATA-PWM splitter or PWM 12V Hub (such as Edge Hub or Edge Gold’s Hub).

3.2. Download the latest L-Connect 3 version. A bug may cause L-Connect 3 to show device options even if the USB connection failed to initialize. This will be fixed in 2.0.32 (we included fix in the beta).

3.3. Switch to another tab and back, then click the LCD group again. If the fan disappears, click Restart LCD to reinitialize USB.

4. LCD Screen(s) Missing or Unresponsive, But Device Manager Detects Device

4.1. If user isn’t using LIAN LI’s hub, check whether the 3rd-party hub supports external power. TL/SL LCD needs USB power so unpowered hubs will cause instability.

4.2. Limit total connected USB devices per USB 2.0 port to 6. For example, if you have 2 sets of 3 LCD fans, connect one set to port 1 (direct to motherboard) and the other set to port 2 via hub.

4.3. If you have two fans in one group and three in another, and also USB from AIO, we recommend:

2 fans → Port 1
AIO or single USB → Port 2
3 fans → Port 3
This ensures balanced load across hub controller ports.

4.4. We recommend using LIAN LI EDGE Hub (EG-01) or EDGE GOLD / EDGE Platinum PSUs.

4.5. If total USB devices exceed 9, keep motherboard USB 2.0 port count under 9. Move devices to rear I/O USB-A instead. Connect wireless dongles to USB-A to avoid motherboard 2.0 port congestion. SL/TL LCDs should connect directly to motherboard USB 2.0 if possible.

5. TL/SL Wireless LCD Fans Lose Screen Memory or Require Clicking Restart LCD After Boot

5.1. Check if power is supplied from included SATA-PWM splitter or PWM 12V Hub (such as Edge Hub or Edge Gold’s Hub).

5.2. Check if updating to the latest L-Connect 3 version resolves the issue.

5.3 Turn off fast Startup, by going to control panel-power option-choose what the power button do-change settings-disable fast startup-save setting

5.4. If not, likely too many USB devices are connected to one hub. Spread USB devices across multiple USB 2.0 or rear USB-A ports.

5.5. Each USB 2.0 9-pin header on motherboard should not exceed 9 USB devices total (including hubs + direct connections).

LIAN LI USB Hub = max 6 devices
Other powered hubs = max 4 devices

5.6. EDGE Hub’s first port (Port 1) is direct pass through from the motherboard → best for SL/TL Wireless LCD or L-Wireless Controller (not recommended for AIO).

5.7. Port 2 is the first branch off the hub’s internal controller → avoid using it for 3x fan setups; instead, place 3x fans on Port 3 or 4.

6. TL/SL Wireless LCD Fans Lose Settings After Sleep/Wake

6.1 Check if updating to the latest L-Connect 3 version resolves the issue.

6.2. If issue persists, follow the USB hub split/load recommendations from items 4.5–4.7.

7. SL/TL/SL-INF/HS II Wireless Fan Lighting Occasionally Resets to Rainbow on Boot or at Random

7.1. Check if power is supplied from included SATA-PWM splitter or PWM 12V Hub (such as Edge Hub or Edge Gold’s Hub).

7.2. Check if updating to the latest L-Connect 3 version resolves the issue. It enables auto re-application of lighting settings.

7.3. Make sure the wireless devices are lock bound.

8.HydroShift II’s pump speed is showing 0 RPM reading with certain motherboards.

Please use this tool to update its firmware: https://drive.google.com/file/d/11_DDtFhz3JQlOqYwGkpTiw7FiGdiy1H9/view?usp=drive_link

9. Wireless Sync List Shows “Unknown Device” and Won’t Revert

9.1. Confirm software version is 2.0.31 or later

9.2. Follow the steps:

With PC on, unplug the power/receiver module from the fan group with issue.
Find LIAN LI icon on Windows bottom right corner, right clicks to shutdown service
Wait 10 seconds.
Unplug the L-Wireless controller.
Plug the power/receiver module back to the fan group.
Plug the L-Wireless controller back.
Right click LIAN LI icon again to restart service.

9.3. If 9.2 does not solve issue, switch first fan to the third. And do the followings:

Find LIAN LI icon on Windows bottom right corner, right clicks to shutdown service
Wait 10 seconds.
Unplug the L-Wireless controller.
Plug the L-Wireless controller back.
Right click LIAN LI icon again to restart service.

If 9 didn’t solve Unknown Device: Unknown Device Debug.pdf

- This likely means the one of the fan’s output port is faulty.
- Remove the third fan (the fan the receiver is attached to is counted as first)
- Shutdown and restart L-Connect service by clicking the icon on the bottom right corner. But before doing so, make sure the Lock Bound Device button is not toggled.
- If “UnknownDevice still exists
  Then the first fan’s output port is faulty, move it to the third position
- If “UnknownDevice” disappears
  Then the second fan’s output port is faulty, move it to the third position
- Restart L-Connect 3 service

If swapping doesn’t fix the issue, then contact us via “form” with this result to replace the entire fan group.

10. Third Fan in Wireless Group Has Lighting Issues (Unknown Device Scenario Continued)

10.1. This likely means the second fan’s output port is faulty. Swap fan 2 and 3.

10.2. If swapping doesn’t fix the issue, then contact us via “form” with this result.

11. The fan is only showing partial lighting.

11.1. Check if power is supplied from included SATA-PWM splitter or PWM 12V Hub (such as Edge Hub or Edge Gold’s Hub).

11.2. Swap the receiver between different fan groups to check if it’s the receiver causing the issue.

11.3. If the issue persists, then contact us via “form” with this result.

12. Devices Missing from Wireless Sync Setup List (Disappeared from UI)

12.1. Confirm L-Connect version is 2.0.31 or later.

12.2. Check if power is supplied from included SATA-PWM splitter or PWM 12V Hub (such as Edge Hub or Edge Gold’s Hub).

12.3. The receiver’s RX signal may have crashed. Close the L-Connect 3 service, wait 10 sec, unplug the wireless dongle, and plug it into the rear I/O USB-A (rear USB port recommended). Restart the service afterward.

12.4. Once working again, it’s recommended to toggle Lock in Wireless Sync Setup to avoid further issues.

12.5. If the devices still don’t appear, then contact us via “form” with this result.

13. One Wireless Fan Group Loses Lighting After Boot (Lighting Doesn’t Apply)

13.1. Follow the same troubleshooting steps as in 12.1–12.2.

13.2. In Wireless Sync Setup, click the lightbulb icon to check for yellow light response.

13.3. If the yellow light shows: unplug and replug the receiver from the fan to reset communication.

13.4. If there’s no yellow light: unplug and replug the receiver’s 12V power source.

13.5. If issue persists, then contact us via “form” with this result.

14. Faulty Wireless Dongle – Signs and Symptoms

14.1. Binding/unbinding and lightbulb click works, but lighting signals are received inconsistently or slowly by some fans – likely a faulty antenna, then contact us via “form” with this result

14.2. L-Connect 3 takes a very long time to launch or hangs until restart – indicates USB instability, then contact us via “form” with this result.

13.3. Lighting effects like Quick Sync or Merge show jittering/glitching – signal timing errors from a faulty wireless controller, then contact us via “form” with this result.

15. SL-INF/CL Wireless Fans Randomly Ramp to Full Speed

15.1. Check if updating to the latest L-Connect 3 version resolves the issue. This fix will be combined into 2.0.32.

15.2 Plug the 4-pin into the motherboard, and optionally plug the 2-pin to SATA or motherboard.

15.3. L-Connect 3 v2.0.31 and later versions introduced the Wireless Sync Lock feature to prevent this by locking bound devices.

16. SL-INF/CL Wireless Settings Randomly Reset (Name, RPM, Lighting Presets)

16.1. Check if updating to the latest L-Connect 3 version resolves the issue. This will be combined into 2.0.32.

16.2 L-Connect 3 v2.0.31 and later versions introduced the Wireless Sync Lock feature to prevent this by locking bound devices.

17. SL-INF Wireless: Bright Static Colors (like White or Rainbow) Flash Erratically at High RPM

17.1. This is caused by a faulty resistor on one of the fans. Contact us via “form” with this result.

18. Wireless Power Bank – Cannot Increase Fan Speed

18.1. To preserve battery life, the wireless power bank is capped at:

50% brightness
50% max fan RPM
For example, if max RPM is 2200, it will be limited to 1100 RPM when powered via the wireless battery.

19. Wireless Device Lighting Turns Abnormal After Boot or During Idle

19.1. Check that the power source is sufficient—confirm SATA is connected or new receiver is properly installed as per the manual.

19.2. Re-applying lighting settings can usually fix it.

19.3. Version 2.0.31 includes the Wireless Sync Lock feature to reduce the chance of this issue recurring.

19.4. If the problem is reoccurring, then contact us via “form” with this result.

20. HydroShift II LCD-C Not Detected via USB in L-Connect 3

20.1. Make sure the L-Connect 3 version is 2.0.31 or later.

20.2. First, check if Device Manager detects HydroShift II. If detected, uninstall H2 from Device Manager, shut down, unplug/replug the USB. This forces Windows to rescan USB devices, in case of an uninitialized USB path.

20.3. If not detected at all, go into BIOS and change the connected PWM header (CPU_FAN or AIO_PUMP) to DC mode and set it to Full Speed. This ensures enough voltage is supplied for USB initialization.

21. HydroShift II LCD-C: Wireless Mode Issues – No Display, Long Bind Time, Screen Content Disappears in Wireless Mode

21.1. These problems are caused by weak wireless signal.
Recommend to plug the L-Wireless Controller directly into the motherboard’s rear I/O USB Type-A port.

21.2 After above done, make sure to lock in wireless sync setup page.

22. HydroShift II LCD-C (Especially CL Version) – Unable to Control Pump & Fan Speed in USB Mode

L-Connect 3 version 2.0.31 has already fixed this issue.

If the issue persists, please check the fans’ connection. See if the pogo pin came loose on the fan, and if the pogo pin’s cable is properly connected to the PCB.

If the issue still persists, then contact us via “form” with this result to replace the LCD cap.

23. HydroShift II LCD-C – L-Connect 3 Doesn’t Detect Fan RPM

23.1. Ensure the power-supplying PWM cable is connected to the motherboard’s CPU_FAN or AIO_PUMP header, and adjust setting in bios from AUTO to DC mode and set it to Full Speed.

24. HydroShift II LCD-C – Motherboard Doesn’t Read Pump RPM

23.1. Certain motherboards (e.g., X870 Carbon WiFi) use PWM resistor logic that conflicts with HydroShift II LCD-C, resulting in missing RPM data.
Solution:

Use the 6-pin power cable.
Connect the 4-pin to SYS_FAN (for RPM signal), and the 2-pin to CPU_FAN (to ensure adequate power).

If the method above doesn’t work (happens to some motherboards), please manually update the HydroShift II’s firmware.

25. HydroShift II LCD-C – High-Frequency Buzzing Noise from Pump Motor

25.1. Set pump speed manually to a constant 2200 RPM and run it for a while to see if the noise improves.

25.2. Take off the radiator, tighten up screws from side of the radiator that hold tubing organization bracket, install radiator back and tighten up screws through 140mm holes for tubing organization bracket. The above steps will prevent any potential vibration.

26. Rattling noise coming from HydroShift II LCD-C

26.1. If there is a distinct rubbing noise coming from the motor area that persists regardless of pump speed, it indicates that the internal impeller is making contact, then contact us via “form” with this result.

27. HydroShift II LCD-C USB mode or Advance mode or 207Digital LCD screen, the LCD background set as static image or jpeg, but cannot be auto reapplied after sleep/wake and reboot

27.1. For reboot, turn off fast-startup by going to control panel-power option-choose what the power button do-change settings-disable fast startup-save setting.

27.2 For sleep/wake, check if updating to the latest L-Connect 3 version resolves the issue.

28. Strimer Wireless 24-Pin – Incompatibility with Side-Mounted Motherboards

28.1. The current generation of 24-pin Strimer Wireless does not support reversible ligh strip orientation.
Since side-mounted and vertical-mounted boards are flipped, the light strips may not be visible when installed.
Starting mid-June, production will include a reversible clip for improved compatibility.
➡ Contact us via “form” for a free replacement clip.

29. Wireless LCD Fan Noise

29.1. Distinguish whether the noise comes from the bearing or the fan blades scraping the frame.

29.2. Uninstall the fan that’s making noise and lay it flat outside for 10 minutes before putting it back. If issue persist, then contact us via “form” with this result

29.3. If it’s fan’s frame scraping, ask the user to loosen the mounting screws and try reapply with even pressure for screws, if still not solved, then contact us via “form” with this result

30. I’m using LIAN LI Wireless devices, and every time I start the system, L-Connect 3 takes a long time to open.

30.1. By default, the software delays the Service startup by 3 seconds after boot. You can change this to 0 seconds in the Settings menu.

30.2. Additionally, the wireless transmitter initialization has an extra 5-second delay, which can make the startup feel even longer.

30.3. We recommend enabling Fast Startup in Windows and setting the shutdown behavior to Sleep instead of full power-off for a faster startup experience.