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h150i elite not cooling properly


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I had a corsair icue h150i elite it stopped working about a year and a half after I got it

I replaced it recently and all worked fine till a few days ago the cpu temp increased from 65C to 80C

when I check the icue software it shows the coolant temp at 38C when i change the pump speed from quiet to balanced or extreme the rpm changes but the coolant stays the same, the radiator is very warm when I touch it but the hoses are not


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Do you mean a "H150i Elite" or a H150i Elite Capellix?  Unfortunately subtle name differences carry meaning within the Corsair family and troubleshooting steps may differ.


5 hours ago, Ivan70 said:

when I check the icue software it shows the coolant temp at 38C

That's not out of bounds.  In simple terms, the CPU is cooled conductively.  Apply voltage to the underside, CPU heats up, conducts heat through the lid and cold plate the cooler.  The cooler's job is to move that heat somewhere else and the coolant temperature or H150i Elite Temp is the measure of how much heat is sitting in your tank waiting to be expelled.  This is also what separates one cooler from another.  You can take three different types of coolers and put them on the same CPU/MB and fire up your test.  You will get the same temp back for the first few seconds regardless of type.  It's the long term loads and the cooler's ability to process heat as it is added that creates differences.  


Your minimum possible coolant temp is going to be the same as the case ambient temp.  In most modern cases that is warm.  All glass and small will be warmer than huge and meshy.  On average, most users will see the coolant sit about 4-7C over their room temp at idle with variation for case type and physical location in the room.  You put it under a desk and you will be warmer than other people.  So if you are starting at 31C and it warms up to 37-38C when gaming subject to the all GPU waste heat, then you are right on the mark.  If you want to test for cooler functionality, run a CPU stress test.  No idea what CPU you have under there, but typical load of 200W is going to raise coolant about 6C in 5-8 minutes at medium fan speed before leveling off.  If you have any type of flow problem to coolant is going to start skipping upwards the moment you start and you'll hit 50-60C and then it will take an eon to cool down.  


Most CPU temp changes are the result of odd instructions or in combination with high voltage.  The cooler doesn't account for that kind of change and if you halved your fan speed you might slowly move up 4-5C over the course of several minutes of consistent load.  

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What exact case are you installing the cooler into and in what exact orientation? Are you overclocking your CPU?

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case thermaltake level 20 mt argb

intel i9-10900kf

corsair icue h150i elite capellix 360mm

32 gb ddr4-3000 memory

geforce rtx 3070

mother board gigabyte z590-ud 

850 watt power supply

it worked fine for the first 3 weeks


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If the coolant is the in the 30s and the CPU temp is up in the 80s, something is keeping the CPU loaded.  Dig around in the task manager and see if you can find the issue.  There are a couple of games out there right now that have an exit bug keeping one core locked at 100% after quitting and this in turn keeps the CPU package temp pinned way up near max.  If the AIO was failing, the H150i Temp would be up near 60C and the CPU idle in the 60-70C range.  

Edited by c-attack
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@Ivan70You might try quitting CUE and using something like HWinfo to check temps.  It will have a lot of detailed information.  Individual core temperatures, loads, and CPU wattage.  This will make it a lot easier to see if the CPU is being kept active by something else.  

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