RB1100AHx2 Fan Speed 0 RPM at CPU temp. = 73 C

Hardware MikroTik hardware general
1

Hello,
I have some troubles I think with my RB1100AHx2.

[admin@MikroTik] > system health print
           fan-mode: auto
            use-fan: main
         active-fan: none
            voltage: 11.9V
            current: 1086mA
        temperature: 37C
    cpu-temperature: 73C
  power-consumption: 12.9W
         fan1-speed: 0RPM

I worry about cpu temperature, but mikrotik seems to treat that as normal. It seems so, that it want to start fan but it can’t.
Fan switches from main to auxiliary and then switches off, then after 2-3 sec. it starts again. Constantly showing me 7RPM for 1-2 sec. then 0RPM. Could you please help me with this issue? I’m new here, if I should give more information, just ask me.

2

try

set use-fan=auxiliary fan-mode=auto

what ROS version you running

3

ROS version is 6.32.4
Today I came to work and somehow fans started from themselves… All working now, temp. 40C. But anyway this problem can come back again… And I want to know what to do. I can try to do what you wrote, but I wont be able to see if it helps because everything is okay now. Well anyway… Hope this won’t appear again, but it would be good to know how to treat that.