- Gaming and consoles
- PC peripherals and accessories
Red triangle
Corsair Red triangle: AIO cooler LCD screen general fault
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
A red triangle with an exclamation point on a CORSAIR iCUE ELITE LCD or iCUE LINK LCD AIO screen signals a general data or firmware fault. Shut down and unplug the PC, discharge residual power, check the 20-pin and 8-pin connectors while off, and update or force controller firmware in iCUE.
Safety first
Stop and check this first
- Never push the LCD cap or plug in the LCD while your PC is on: Corsair warns that the pump loop is sensitive to voltage inrush and that live connection can damage the pump's tachometer sensor.
- Before doing a full uninstallation of iCUE that removes registry keys and %APPDATA% files as a last resort for the red triangle, export your current iCUE profiles onto your computer so you can import them again afterward.
Safe checks you can perform
- Perform a full PSU unplug and power-button discharge cycle
- Check the 20-pin Commander CORE plug and 8-pin LCD cap while powered off
- Force-update controller firmware or perform a clean iCUE reinstall
Leave these tasks to a qualified professional
- Do not attempt this professional task: Inspect the 20-pin harness and 8-pin LCD cap with the system unpowered
- Do not attempt this professional task: Force-update controller firmware, clean-reinstall iCUE, and escalate if unresolved
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Inspect the 20-pin harness and 8-pin LCD cap with the system unpowered
What they doWith the PC shut down, unplugged, and discharged, the technician distinguishes the red triangle general fault from the spinning-impeller pump error, inspects the 20-pin Commander CORE connector for damaged pins, aligns its white stripes, and seats the 8-pin LCD cap.
They must show youthe aligned white stripes on the 20-pin Commander CORE plug, undamaged pins, and the seated LCD cap before power is restored.
In writingexact LCD error icon observed, condition of the 20-pin and 8-pin connections, and completion of the full power-drain cycle.
Force-update controller firmware, clean-reinstall iCUE, and escalate if unresolved
What they doThe professional forces a firmware update on the System Hub or Commander CORE in iCUE, performs a clean iCUE reinstallation after exporting user profiles on iCUE ELITE LCD systems if needed, and contacts CORSAIR Customer Support if the red triangle remains.
They must show youthe forced firmware update in iCUE and the LCD screen response after rebooting.
In writingCommander CORE or System Hub firmware flashed, clean-reinstall outcome if performed, and Customer Support referral details.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Perform a full PSU unplug and power-button discharge cycle
- Who:
- you, at the PC whose CORSAIR AIO LCD display shows the red triangle icon.
- How:
- power down the PC completely, unplug the PSU power cord from the wall outlet, and press or hold the power button several times until residual power is fully discharged before plugging the cord back in or inspecting cables.
- Result that matters:
- complete the full power discharge specified in both the iCUE LINK LCD and iCUE ELITE LCD guides.
- If power-cycling restores normal operation on an iCUE LINK LCD screen:
- do not force re-flash the System Hub firmware.
- If the red triangle remains or you use an iCUE ELITE LCD with Commander CORE:
- inspect the unpowered connections and firmware.
- Evidence to keep:
- confirmation that the PSU was unplugged from the outlet and discharged via the power button.
Evidence: Red triangle on CORSAIR LCD AIO and other error symbols explained | CORSAIR · iCUE LINK LCD AIO Screen Troubleshooting | CORSAIR
Check the 20-pin Commander CORE plug and 8-pin LCD cap while powered off
- Who:
- you or the technician, strictly while the cooler and PC are completely powered off.
- How:
- with power off, push down on the 20-pin cable from the LCD module to the Commander CORE so the white stripe on the plug aligns with the white stripe on the housing, inspect the 20-pin for damaged pins, and give the LCD cap a light push onto the 8-pin connector.
- Result that matters:
- verify full physical seating between the LCD module and Commander CORE without causing voltage inrush.
- If the 20-pin plug or 8-pin LCD cap was not fully seated:
- seat both while powered off before rebooting.
- If any pins are damaged or the icon remains with seated connectors:
- proceed to the firmware force-update check and support.
- Evidence to keep:
- alignment of the white stripes on the 20-pin connector, pin condition, and 8-pin LCD cap contact.
Only push the LCD cap or adjust connectors when the cooler is powered off: Corsair warns that the pump loop is sensitive to voltage inrush and can be damaged if you push or plug in the cap while power is on.
Evidence: Red triangle on CORSAIR LCD AIO and other error symbols explained | CORSAIR
Force-update controller firmware or perform a clean iCUE reinstall
- Who:
- you, inside CORSAIR iCUE after checking connections and powering the system back on.
- How:
- for iCUE LINK LCD, open Firmware Updates or Device Settings for the System Hub and select force update if power-cycling did not restore the screen; for iCUE ELITE LCD, force update Commander CORE firmware (using another PC if available) and, as a last resort, export your profiles and perform a clean iCUE installation after removing registry keys and %APPDATA% files.
- Result that matters:
- re-flash the controller firmware or reset iCUE before escalating to Customer Support.
- If the red triangle clears after the firmware update or clean iCUE installation:
- re-import your saved profiles.
- If the error icon persists after all documented steps:
- contact CORSAIR Customer Support for assistance.
- Evidence to keep:
- Commander CORE or System Hub firmware status and whether the red triangle cleared.
Evidence: Red triangle on CORSAIR LCD AIO and other error symbols explained | CORSAIR · iCUE LINK LCD AIO Screen Troubleshooting | CORSAIR
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Gaming and consoles
- Brand
- Corsair
- Product type
- PC peripherals and accessories
Known code variants
- Exclamation point icon on iCUE ELITE LCD
- Fallo general en refrigeración LCD Corsair
- General fault icon on AIO LCD
- Red triangle on CORSAIR LCD AIO
- Signo de exclamación en pantalla LCD iCUE
- Triángulo rojo en LCD AIO
What it means
Corsair's official articles “Red triangle on CORSAIR LCD AIO and other error symbols explained” and “iCUE LINK LCD AIO Screen Troubleshooting” cover the iCUE ELITE CPU Cooler LCD Display and iCUE LINK LCD AIO. Unlike the square with a spinning impeller (which signals a pump tachometer error), the red triangle with an exclamation point means a general fault unrelated to the pump, typically caused by missing data from the Commander CORE or outdated controller firmware. Other models may differ, and this icon alone does not prove a part is faulty.
Warnings and stop conditions
- Highsource verified
Never push the LCD cap or plug in the LCD while your PC is on: Corsair warns that the pump loop is sensitive to voltage inrush and that live connection can damage the pump's tachometer sensor.
Evidence: Red triangle on CORSAIR LCD AIO and other error symbols explained | CORSAIR
- Lowsource verified
Before doing a full uninstallation of iCUE that removes registry keys and %APPDATA% files as a last resort for the red triangle, export your current iCUE profiles onto your computer so you can import them again afterward.
Evidence: Red triangle on CORSAIR LCD AIO and other error symbols explained | CORSAIR
Symptoms and causes
Probable causes · in order
- LCD screen not receiving data from Commander CORE or 8-pin cap contactCommon
On the iCUE ELITE CPU Cooler LCD Display, a general fault is typically caused by the LCD not receiving data from the Commander CORE across the 20-pin plug or 8-pin cap connection.
Evidence: Red triangle on CORSAIR LCD AIO and other error symbols explained | CORSAIR
- Commander CORE or System Hub firmware requiring an update or forced flashPossible
An iCUE ELITE LCD upgrade kit can show the general fault if Commander CORE lacks the latest supporting firmware, and iCUE LINK LCD screens may need a forced System Hub firmware re-flash.
Evidence: Red triangle on CORSAIR LCD AIO and other error symbols explained | CORSAIR · iCUE LINK LCD AIO Screen Troubleshooting | CORSAIR
Virtual technician
Does Red triangle still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Red triangle on CORSAIR LCD AIO and other error symbols explained | CORSAIR
Corsair · 2026 · official_doc
- 2
Triángulo rojo en CORSAIR LCD AIO y otros símbolos de error explicados | CORSAIR
Corsair · 2026 · official_doc
- 3
iCUE LINK LCD AIO Screen Troubleshooting | CORSAIR
Corsair · 2026 · official_doc
- 4
Solución de problemas de la pantalla iCUE LINK LCD AIO | CORSAIR
Corsair · 2026 · official_doc
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