Anybody had test this configurantion and is getting temp issues like me?
Hi,
Can you give more info, e.g. layout/enclosure detail?
Rgds,
Mark.
Thanks for your reply. The boards is on a mkt case (Mkt reference : CA/OTU) with four ubnt XR5. Powered by POE (56V / 2Amp) Is outdoor and hermetically closed, although there are to small holes at the bottom to avoid condensation (I think)
I upgraded to ROS 4.6, but there is a bug about temp and it showed 121C, so I downgrade to 4.5 and the temp is shown correctly again. I experienced some hangs days ago that I relate to temp issues (hangs occurs during higher temp hours) but at that time I didnt know I can check temp with winbox. I will closely check temps today. We will have about 20ºC here in Spain. So I can confirm the temp issue. Too bad if this is confirmed, cause I can’t use RB800 here (about 45º in july/august)
Hi
Mikrotik say that it should work and they have tested this to high temperatures.
But my concern is mainly that the unit has a fan.
Read here - http://forum.mikrotik.com/t/rb600-missing-from-routerboard-com/36091/1
Rgds,
Mark
Big Outdoor Case(CA/OTU) ???
i can put 2 xr2 in the buttom but in front i cant put it… i can put r52h & r52n only !
and what do you do with pigitals ?
can you insert here picture to see
like the past sorry for bad E
I suspect we have temperature issues also, besides we use just 3 CM9 cards at the moment. Our RB800 is hanging almost every day, usually about 14-15 o’clock under strong sun, although outside temperatures in Serbia are not so high yet. We tried many things and I am not sure if we resolved this problem yet.
- We put RB800 in alloy box like this:
http://pacific.wavearena.eu/en/detail/60398/wavearena/wavebox-alu
And we put 1 x SR5, 1 x CM9, 1 x R52-350 cards. It started hanging every 10 minutes or so. We replaced SR5 with Sparklan 198N and it worked for a day or two.
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It started hanging again. We replaced R53-350 with CM9, but hanging continued every day, so we put 2 x Sparklan 198N and 1 x CM9. Then, it happened just one Sparklan didn’t work at all, so we replaced it with CM9, than other day other Sparklan stopped working, so we replaced that one also with CM9. When we put these two Sparklan cards in another box in our office, they both work, so this is completely crazy.
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We changed alloy box for plastic case on the pictures bellow. We changed power supply from 48V to 24V and not we are waiting to see if this is the problem.
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Yes, I forgot, in the meantime we replaced RB800 itself with another RB800, but they both work the same way, hanging every day. We tried first RB800 (which is removed from production) in our office and it overheated very quickly in the alloy box and hanged with bad smell. After we removed and put back power supply, it still worked. I will try this test again because I am not sure what happened exactly. It seems to me that metal box on the board is overheating (check pictures). I supose it has something to do with the power supply. When we put the same board on the table without a box, it works without problem.
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Today is a bit colder, outside temperature is about 14 degrees Celsius and CPU temperature of the RB800 is 115-116 degrees (I supose Fahrenheit, which is 46-47 degrees Celsius). RouterOS is 4.6 at the moment. We made quite big hole under the box and tried everything we now, so the next step would be replacing RB800 with RB433AH for the time being and send all RB800’s to service. We ordered RB800’s from the first import to Serbia (early January this year) and I suspect they all might have some production problem.
Does someone experience similar problems? What are usual working temperatures of RB800?
We completely removed rubber from the bottom to get better cooling, but we have to resolve this before snow, I supose snow might get in (with help of wind) through these holes.
This metal box (marked red) is very hot. I forgot to mention that we have tried PoE with two different 48V power supplies and we tried direct power with 48V and now with 24V supplies. We tried to put power supplies before and after UPS and it’s all the same, still hanging every day. This is electrical plant quite difficult to climb 
Don’t use this. User manual says 48v max on both power inputs.
Are you sure you are supplying enough power at the other voltages? The XR5’s each use 1.8a max at 3.3v. That is a total of 23 watts. Add 9 watts for the RB800, and you are at 32 watts (24v@1500ma power required). Check “/system health” and see what input voltage the unit is showing. Might want to check it as it gets near the time it fails.
Things will get hot inside that box with 32 watts in there.
@ dormador : we rectified the bottom metal plate to slide the board on it, so we can adjust the board position to fit on the case, ask to a metal worker to drill it (I can attach you a picture of our drills, if you like)
@acim : You are experiencing same problems as us here. Board hangs on sunny hours even not so hot out. We tried a lot of POE combinations, but no direct jack powering and somebody had check that there is 15W more power consum with POE than with direct jack, and maybe this power is dissipated as hot inside the case, so it will be our next step.
Another question for us is: if POE standart says that values for power is near 15W maximum, could be RB800 hangs when this value is passed or keep working even with more power consum?
Your extrange values for temperature is not for Farenheit, actually values are Celsius, but a bug on ROS v4.6 is showing it wrong. Try downgrade to v4.5 and values will be good again.
We experienced problems with radios too. Sometimes one or two radios stop work, and only thing we can do is power off/on. So maybe is not your radios problem but a power/temp problem.
Now we are at 12ºC-14ºC here and RB800 is accounting 51ºC-52ºC inside case, only rest 13ºC to the 65ºC maximum for RB800 to stop work…
Sorry for your problem, hope we can solve it soon. If I cant find soon a solution I’m planning to change the schema to four RB433AH with a radio and a box each one …
You are experiencing same problems as us here. Board hangs on sunny hours even not so hot out. We tried a lot of POE combinations, but no direct jack powering and somebody had check that there is 15W more power consum with POE than with direct jack, and maybe this power is dissipated as hot inside the case, so it will be our next step.
I’ve tried direct power supply and the problem is still persisting. I’ve tried two different 48V power supplies both on PoE and to power jack (not at the same time, just to PoE or just to power jack) and it is always the same, hanging at sunny hours. Yesterday, I put 24V power supply to test with it and it is still working, but the weather is not so sunny today, so I can’t be sure. I’ve contacted some other companies here in Serbia and they claim their RB800’s are working fine even with several XR5 inside.
Your extrange values for temperature is not for Farenheit, actually values are Celsius, but a bug on ROS v4.6 is showing it wrong. Try downgrade to v4.5 and values will be good again.
I know this is a bug in 4.6, I’ve tried 4.5 also and temperature is correct with 4.5, but this value in 4.6 looks just like Fahrenheit, besides they declare Celsius. I’ve checked my RB800 a minute ago, and it stands at 121 degree while outside is 17 degrees Celsius. This is 50-51 degree Celsius, I believe.
We experienced problems with radios too. Sometimes one or two radios stop work, and only thing we can do is power off/on. So maybe is not your radios problem but a power/temp problem.
Same here, our Sparklan 198N used to hang and if I scan with it, it is absolutely blind. It looked totally broken. When I put the same card to another box, it worked fine. This happend to two 198N cards and this is why I have just 3 CM9 cards inside at the moment. They seem to be stable, but not RB800. I am wondering if this is just with some series of RB800 or all of them are having the temperature problem.
With those holes in the bottom, don’t be suprised if you find a wasp or bee nest inside the box.
We opened these holes yesterday because we were desperate to resolve the problem. I am not worried about wasps now, I am worried about making this to work without locks. This is definitely temperature issue because it worked today without problems and it was cloudy and rainy today. And this is the first day it worked without problems.
Besides, this big metal box bellow also has holes and there are no wasps or anything. As I said, this is electrical plant, 86m high and there are not many insects at this height.
I just reviewed manual : POE runs from 38V to 56V, direct Jack from 10V to 56V, now we had about 54.2 V inbox, with a 100W PSU, I think we can bring enought power to run. I bet this is a temp issue, maybe RB800 + 4 XR4 can´t be placed togheter outside on a closed box. Too hot to work. RB600 + 4 XR5 was working good for me last 18 months. Time to change schema to individual board, radio, case and PSU.
@acim :
A temp issue definitely. Yesterday no hangs for me here too. 18ºC out, but windy, so termal sensation was colder. We scored 56ºC inside box, only rest 9ºC to 65ºC upper limit. By now I can’t confirm where it hangs exactly (65º or lower/upper temp). But not a good idea have this board/radios running outside. I will do only a new test: feed it with 24V direct jack, and check if temp is in same values or not. If there is not a big temp drop, I will change to individual radio schema : each radio with each case, board, PSU, etc. Mikrotik support recommnend me change XR5 to R52H, but I’m not sure I can expect same performances.
My RB800 is still working today. CPU temperature is 101 degree (I supose real value is 38.3 Celsius), which is much lower than on Sunday. Outside temperature is 8 degrees. I am 99% sure this is the cause of our problems. I will prepare 433AH and be ready for the first sunny day if RB800 hangs to replace it and send it back to supplier. I was thinking of additional coolers, but Mikrotik claims it doesn’t need it, so I supose my RB800 is broken, actually two of them. I have two more, but I have no time to make additional experiments.
The bad about v4.6 temp bug is that you cannot check the real temperature wich is hanging the board. With v4.6 the max number is 121º (F or wrong scale). So i’m with v4.5 waiting to reach the 65ºC limit to confirm hangs. By now 54ºC inbox / 16ºC outdoor here, but 21ºC expected today.
Acim, do you have the RB800 deployed anywhere else yet? If so, has this been a problem with all of them you’ve deployed or just the units you’ve tried on the tower?
For anyone else, are you seeing this problem with all of your RB800s or just some?
I have tried two boards on this same place, I haven’t tried it somewhere else, I didn’t want more trouble 
I will probably make more experiments but not in production this time. I will let you know what I find.
I spoke to two companies here and they both don’t complain about RB800. I am not sure if they have it in some shade or exposed to the sunlight.
@acim . It crashed!. At 63º one radio stop working, so I must restart all. I will do not more test. I just ordered four RB411AH and return RB800 back. Now our case is opened until we get the new parts.
My RB800 is still working at this cloudy and rainy day. This kind of weather I expect tomorrow also and we will see what will happend on Thursday.