This means unit will work OK in room temperature +50CTested ambient temperature -40°C .. +50°C
Room temperature is 20C, and it works fine. It will work fine with higher temperatures too. You should not pay attention to the CPU temperature in this situation. CPU temperature is allowed to be high. Unit will still work ok.About 60°C+ and room temperature only 20°C
hAP ac^2 does not have a built-in temperature sensorHmm.. Not sure is this a (known?) bug or something else, but with 6.41.3 on hAP ac^2 it seems that the system/health is not printing anything:
[x@y] > system health print
Also Health-page in Winbox shows only buttons, not any actual data. Not so big deal for me, but just mentioned.
i don't think that moving the heatsink to the other side would make things different.
The whole problem is that there are no vent holes in the black casing and there is no convection. What prevented a more spacious case? Yes, even the same standard white casing from hAP AC would be better. So the question is - why in the cAP AC the radiator is 2x more than the hAP AC? Hardware they have the same, but the cooling - different.also good to know, the heatsink has a mass, so if it gets heated up to a certain temperature, it will radiate it until the temperature difference between the environment and the heatsink disappears. there is a "buffering" effect in play. all we get from the heatsink is to collect the heat from multiple points and radiate it out more evenly on a greater surface.
The back heatsink is the official recommendation, directly from the maker.
Infrared temperature gun+taobao.com or amazon.com!Hi, I have no issue with mikrotik's statement that device is designed for the temperature, however, I would like to ask: How did you measure the cpu temperature?
When i do:I get empty result (both winbox or console while running ROS 6.41.3 ).Code: Select all
I have 4 devices, all acting same so I do not believe it is faulty device. Could you please tell me how did you find out the CPU temperature in hAP ac2 ?
I also feel this way. After the latest update, the temperature is much lower.I have accidentally (while installing dust cover for USB port) noticed that my hAP ac^2 feels less warm (around 35 C) than around 2 weeks ago (when it felt more like 45 C).
Has MikroTik implemented some thermal improvements (e.g. shutting down/throttling unused CPU cores) for hAP ac^2 in recent RouterOS versions?
P.S. I have ordered several dust covers from eBay and this one fits best and looks decent.
Heat does not kill electronics immediately. It happens over years. So it will work for, say, 2-3 years before it goes dodo.It feels hot, but it must have been designed for a high operating temperature, or it would not still be running.
In my case it does matter.It doesn't matter how hot it feels. The hardware can handle it and will work fine.
1) It doesn't. Well, up until 50 celsius.1. Normis from Microtik support in post #7 says "it does not matter"
2. It was not DIRECT sunlight. two glass window was in between
3. Direct sunlight does not increase AMBIENT temperature
Well, Your understanding is wrong. In this context (for ANY product) what count is the temperature of the air surrounding the device. It really doesn't matter if the room is at 19C, if you just put the poor router inside the chimney, with the fire roaring.The specs says "Operation temperature -40..50"
My understanding it is not the temperature inside next to the chip, it's the air temperature outside the unit.
The room temperature was 25 when it stopped working. I doubt sunlight through a window made it over 50.
Maybe my router is just faulty, but it does not stand up to the claimed specs.
I see this as a design mistake, the case is just too small, they seem to fix that in hap ac3
It probably was. I didn't care much for the color choice on this model: to me a white case would be better. But I still believe that the "50C ambient temperature" is correct. What I think happened is that the black case got warmed up by the sun, and the "ambient temperature" (the air inside the case) exceeded 50C. When You drilled the extra roles the air got better flow, and everything worked out.It started when I moved it by the window.
It was locking up when under sun light (coincidence?)
After 2nd lock up I drilled the holes and it never happened again.
These simple events make me think the overheating was the issue.