CORSAIR ICUE H115I LIQUID CPU COOLER Overheating

Corsair iCUE H115i RGB Elite Liquid CPU Cooler

The internal pump motor or impeller has likely suffered a mechanical seizure or electrical open-loop failure. Since the cooling loop is factory-sealed to prevent evaporation and contamination, individual pump components cannot be replaced without compromising the system's integrity, necessitating a full assembly replacement to restore coolant flow.

SKU: CW-9060059-WW

Corsair Commander Core RGB/Fan Controller

On Elite Capellix models, the pump receives power and data through a wide proprietary 24-pin connector attached to this specific controller. A failure in the controller's internal DC-to-DC conversion or PWM logic will result in the pump failing to spin, triggering the 'Pump Failure' warning in iCUE and subsequent CPU thermal runaway.

Corsair TM30 Performance Thermal Paste

While secondary to a pump failure message, extreme overheating can occur if the Thermal Interface Material (TIM) has pump-out or has desiccated, creating an insulating air gap between the CPU integrated heat spreader and the copper cold plate. This prevents efficient heat transfer even if fluid is circulating.

SKU: CT-9010001-WW