TROUBLESHOOTING LIQUID COOLERS

High-quality liquid coolers are generally reliable. When installed correctly, they can provide years of trouble-free operation. With that said, if something seems off, be it temperatures or strange noises, it is best to stop and investigate the issue as soon as possible. Below are some of the most common liquid cooler problems, with a focus on all-in-one (AIO) coolers, along with practical steps to diagnose and resolve them.

MY AIO COOLER IS MAKING BUBBLING NOISES

Liquid coolers are hardly ever completely silent. They may produce a faint hum, and you may hear the fans spin when the PC is under heavy load. However, bubbling, gurgling, or rattling noises usually indicate an issue that warrants investigation.

Bubbling sounds from an AIO typically mean that air bubbles are passing through the pump. This usually happens when the cooler is mounted in a way that lets air collect near the pump. Most AIOs have some air inside them, but ideally, you want it to be in the radiator and not circulating through the pump.

Troubleshooting Steps

●      Check radiator placement: The pump should not be the highest point in the loop as this encourages air to accumulate in the pump.

●      Top mounted radiators: If your case supports it, top-mounting is usually the simplest way to keep air away from the pump.

●      Bleeding air in new builds: In a fresh installation, gently tilt the case back and forth a few times to help the bubbles move toward the radiator. Be mindful of any spinning hard drives if you do this while the system is running.

You can also reduce the likelihood of pump noise by picking a cooler designed for quiet operation, such as the LEVANTE II 360 AIO, which uses a specialized dual-chamber design to minimize noise while maintaining consistent coolant flow.

MY CPU TEMPERATURES ARE TOO HIGH

Overheating is one of the more common issues in PC systems. Symptoms vary from elevated temperature readings in monitoring software to reduced performance, thermal throttling, crashing, and loud fans.

Short temperature spikes can happen. It is only a problem when the CPU is constantly running too hot or begins throttling under load.

If the liquid cooler is the cause, the issue is often related to installation or maintenance rather than hardware failure. Common causes include improper cabling, uneven mounting pressure, dust buildup, or degraded thermal paste.

CHECKING PUMPS AND FANS

First, confirm that the pump is running. Check its rotations per minute (RPM) in the BIOS or in monitoring software. If RPM reads 0 or the pump is not detected, power down the PC, unplug everything, and recheck all connections.

Make sure the pump and the fans are connected correctly. The pump needs to be installed on the correct header as specified by the cooler manufacturer and confirm that the fans increase speed under load. In new builds, verify that any protective plastic film has been removed from the cold plate.

If temperatures remain high, reseating the cooler block can help as uneven mounting pressure can reduce cooling performance. Loosen the mounting screws and retighten them in a cross pattern, gently and slowly, to ensure even contact.

MAINTENANCE TIPS

AIOs themselves require little maintenance, but regular system upkeep is still important. To keep temperatures under control:

●      Reapply thermal paste if you lifted the cooler block. Clean both the CPU and cold plate with a lint-free cloth and isopropyl alcohol, allow them to dry, then reapply paste and remount the cooler.

●      Remove dust buildup from the case, radiator, and fans. Power off and unplug before cleaning. Use compressed air carefully and remember to hold down the fan blades to prevent them from spinning excessively.