We can control the <color #00a2e8>**blue LED**</color> with the trigger node in sysfs.
But the red LED is hard-wired to the power input rail and we can't control it.

**Turn off**
<code>
su -
echo none > /sys/class/leds/blue\:heartbeat/trigger
</code>

**Turn on**
<code>
su -
echo deafult-on > /sys/class/leds/blue\:heartbeat/trigger
</code>

**Hearbeat (original state)**
<code>
su -
echo heartbeat > /sys/class/leds/blue\:heartbeat/trigger
</code>

There are many other trigger modes. But some of them may not work.
<code>cat /sys/class/leds/blue\:heartbeat/trigger </code>



<note tip>If you want to turn the <color #00a2e8>**LED**</color> off automatically in boot process,\\ add <color #ff7f27>echo none > /sys/class/leds/blue\:heartbeat/trigger</color> in /etc/rc.local file</note>