Hi user_3754066,
As liqiang185 already stated: the ambient temperature must be low enough to be able to efficiently cool.
But... if it remains 80°C or higher (and in the past it was much lower (that is important!)) - then this is a sign that you should take action! (You shouldn't ignore it).
Because... if this is a genuine reading (i.e. the temperature measurement is correct) - then it will cause failure, errors and unpredictable results - sooner or later. As it is now, it is way above 'normal operating temperature'.
So, please have this flagged: Inform your organization management and prepare for action (to start with: requesting investigation: "Why is this device running so hot?".
On logistic level: "You need to prepare your organization that this device may fail" (and then what to do? Should we already order and prepare a spare unit? Do we have service contract? To the basic things to prepare: where is this device located? (Which datacenter, which room, which cabinet, which row... )
I am not sure how autonomous you are allowed to operate, but if you are permitted to open the ea5801 for investigation - then you may think about that. Perhaps contact the Huawei service partner for assistance.
If permitted (and only then):
Things that you could do (once the box is open: inspect the fans - signs of dust) and be careful... Not sure what is causing the 80°C ... could be the electronics, could be power supply... but it will sure burn your fingers - so don't touch anything directly - just look and feel carefully without touching.
An advanced method would be to use a Thermal-Imaging camera... while the box is running (with cap off). That way you can see what is causing the heat (based on the 'heat photo'.)
It may be nothing serious (just a dusty clogged air-inlet or heatsink), noisy almost-failing fan or...some electronic component is about to fail (which can cause outage and errors). or ... cause an electric fire (very rare, but that is the reason why you need to find out).
Good luck - and be careful!
