The LMC has three status LEDs on the front: power (LED 1), internet connectivity (LED 2) and charger status (LED 3).
LMC hardware from March 2025
From LMC hardware revision 2.4.0 all three LEDs are RGB (earlier LMCs have green-only LEDs, see below).
Power (LED 1)
State | Colour | Description |
BOOTING | YELLOW | The LMC is booting and not yet operational. |
NORMAL | GREEN | The LMC is up and running. |
Internet connectivity (LED 2)
State | Colour | Description |
BOOTING | BLINKING GREEN | The LMC has not yet booted up and shown the status. |
NO_INTERNET | RED | The LMC has no internet access (Ethernet, Wi-Fi or LTE). Load management continues to work. |
BLUETOOTH | BLUE | Bluetooth has been switched on by pressing the button for at least 1 second – set the LMC up in the VOOL mobile app. On LMCs without Bluetooth (manufactured before 2025), blue means the Wi-Fi setup hotspot is open. |
NORMAL | GREEN | The LMC has internet access. |
Charger status (LED 3)
State | Colour | Description |
BOOTING | OFF | The LMC has not yet booted up and shown the status. |
NO CHARGERS | RED | No chargers have been configured for the LMC. |
INCOMPATIBILITY | YELLOW | One of the chargers has default control channels (legacy standalone mode) or is not communicating with the LMC. |
ACTIVE | GREEN | The chargers are communicating with the LMC. |
Legacy LMC hardware (before March 2025)
On earlier LMCs the bottom LED shows the status:
No chargers: the LED blinks twice in short bursts (100 ms) every two seconds.
Idle: the LED toggles at one-second intervals (slow blinking).
Active: the LED toggles at 100 ms intervals (fast blinking).
If the LED does not enter any regular blinking pattern or behaves erratically, the LMC may not have started correctly – see Troubleshooting LMC.