Huh... interesting observation. You're right, the data sheet says up to 40°C for operating temperatures, but my two controllers are running at 43 and 44°C. I've never had any problems with them. I guess that's fine? Haha, I have no idea.
50° seems a bit high though, is it really in an A/C environment? Does it have proper air flow around it?
I have 2 WLCs in a warehouse and both WLCs are showing 60 C. But the switches in the same rack are below 40C. I checked for CPU & memory but they are normal. I don't know which CLI command I can use to check if the cooling fans in the WLCs are alright or not.
Can you please share if there is such CLI command? IOS version is 220.127.116.11