Fan noise with transceiver on SFP+ port
Hi, I'm wondering if this is acknowledged issue, but with this model, when transceiver is put in SFP port, the fan goes all the time on (I think) max settings, because I can hear it faintly from 50 meters and loudly from 30. By far the noisiest electronics I have. You don't even have to connect fiber to it, the fan stays on as long as transceiver is there. To me it makes no sense, because unit is silent with using copper on upper port, but fiber is producing way lower heat than copper, and nobody puts copper transceivers on combo ports. I have 2 units, one connected with fiber and one with copper (both 10G) on upper port, the second one is warmer, yet is silent, while fiber one blasts the room with noise. For example, copper ends at 10G (some cables will advertise more, but good luck finding switch/network card with copper above 10G) because it's power hungry and heat producing, but fiber goes 100G and beyond with just passive cooling like Mellanox 100G NIC's . I even tried to move that unit outside, fan still goes the same, so it's not even relevant to temperature, firmware just sets it to max all the time with SFP, which is totally unneded. Please set fan behaviour like upper port, or better yet, allow us to do fan control in Deco app. Right now, I'm thinking about returning or just doing a teardown and cutting power to fan. Please set my mind on ease with at least acknowledging the issue and a promise for firmware update. :) Thanks
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So I contacted support and got this reply which makes SPF+ unusable
SFP optical modules generate considerable heat. In our tests, some third-party brands' optical modules quickly heated up to over 60°C shortly after starting operation. As SFP+ optical modules have exposed metal surfaces, we are concerned about the risk of users getting burnt when inserting or removing SFP+ devices during this high-temperature period. Therefore, we choose to activate fans continuously to cool the SFP modules and ensure that the temperature does not rise too high. Therefore, as long as the SFP+ port is plugged in, the fan will start working, which is expected behavior, please don't worry.
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So I'm from EU and I have beta firmware of 1.0.14 which fixes the issue. I see that US has already 1.0.14 so most likely it will be in next version. My firmware file just disables the fan and I've been told in official it will be a toggle in web UI.
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Based on the response above regarding necessity to cool WiFi 7 more than previous iterations, I think the fan was designed with the assumption that sfp runs hotter... but that is not true. Copper runs way hotter than fiber or even dac/twinax. Please make the fan actually temperature-controlled not socket-controlled. Fiber is COOLER
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I have the 1.0.14-Firmware, but that doesn't seem to fix the problem. The fans still ramp to the max as soon as a transceiver is plugged in... Is there any news, if this Firmware was the fix or will this come in a future firmware?
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Are you from US? 1.0.14 got released way later in EU than US and in EU I don't have issue with fan now. It never starts.
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@Renive I live in the EU... Do you have a toggle somewhere in the settings, or did the fans just not ramp up that much by default?
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Is is possible to post the beta-firmware? :)
Maybe another question: do you know what Hardware-Version you have? 1?
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Replies: 24
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