How does the device's LED lights work?
There are two different versions of the LED lights, a new and an "old" version. Eventually, all devices will be updated with new LED light colors. Below, you'll find a comparison of the new and old LED color codes. For a detailed description of the new LED lights, refer to this page.
The most significant difference in the new version is that the LED light now shines dimly all the time. Additionally, the light will periodically pulse with higher intensity when the device is able to read messages from the HAN port.
Not sure which LED version applies to your device? Here's a brief overview of the differences between the two versions:
| Situation | Previous version | New version |
|---|---|---|
| When connecting to the HAN-port | The device blinks yellow to charge the device while connecting | The device pulses yellow to charge the device while connecting |
| Device is charging | Yellow blinking | Steady yellow light |
| Setup mode (Wi-Fi only) | Steady blue light | Steady blue light |
| Device connects to the network | Red blinking | Steady purple light |
| Device successfully connects to the network | Green blinking (before the light turns off) | Steady green light with pulsing when the device is online/in use |
| In use | The light should be off when in use | It emits a faint green light (with pulsing when the device receives data) |
| Update in progress | No light signal for this | White light (with pulsing) |
Is there a difference between 4G and WiFi LEDs?
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In some versions of the 4G device, the LED light may have a slightly shifted color profile, mainly noticeable as a greenish tint in the yellow light described below. This is normal for the devices to which it applies.
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4G does not have a setup mode. Therefore, it will never glow continuously in red or blue. 4G will also not blink/flicker blue when an alternative power source is required.
Light is off
When the device is connected to a electricity meter and the light is off, it means everything is in order. It turns off to cause minimal disturbance in the customer's home. Note: If the device is connected to the power meter and not lit, it may also indicate that the HAN port is simply not open, and the device is, therefore, without power supply. It may also indicate that the network cable is not properly plugged in, either in the HAN port or in the device.
The LED light of the device is continuously red
Is it connected to the HAN port? If so, is it a WiFi device? In that case, it needs to be connected to the customer's network first.
Video of a constant red LED light.
The device light is blinking red
Red blinking occurs when a WiFi device is trying to connect to a wireless network after setup. When it succeeds, the LED briefly lights up in green before turning off completely. If it fails, it will continue blinking in red. In such cases, challenging coverage conditions are typical.
Video of the device blinking in red before connecting. In this case, the red light blinks only briefly before successfully connecting to the network. This blinking may last longer under different coverage conditions.
Constant blue LED light
A device that glows continuously in blue is in setup mode. It must be connected to the network before being plugged into the power meter. If the blue light is irregular and almost flickering, an alternative power source should be tried.
Video of a constant blue LED light.
The device light is blinking yellow.
Yellow blinking indicates that the HAN reader is in the process of charging up.
Video of the device blinking in yellow.