Troubleshooting

Troubleshooting mode

In the troubleshooting mode, the device continuously communicates with the network and Efento Cloud for 300 seconds (5 minutes), refreshing the signal strength and connection parameters. Starting the troubleshooting mode allows you to check whether the logger correctly logs into the network and whether the signal strength of the NB-IoT network is sufficient for the correct operation of the logger. Launching the troubleshooting mode is not required for the correct device configuration. After starting the troubleshooting mode, the user can check:

• Seconds left - the number of seconds remaining until automatic exit from the troubleshooting mode

• Signal strength - NB-IoT signal strength in tenths of dBm. -120 is taken as the extreme value. If the signal strength is below this value, the device may regularly lose connection and not be able to correctly send data to the server

• Signal Quality- parameter defining the signal quality

• Last data fetch Timestamp - date and time of the last communication with the network. All parameters related to communication with the network have been refreshed at this time

• Registration Status - network connection status. There are three possible statuses:

  • REGISTERED - registered on the network

  • NOT REGISTERED SEARCHING - not registered on the network, trying to find the network and register on it.

  • NOT REGISTERED NOT SEARCHING - not registered on the network, does not try to search for the network and register to it. If the logger cannot register on the network for any reasons (e.g. poor signal quality, SIM card error), this status will appear after several unsuccessful registration attempts

• Ping status - information if the logger is able to reach Efento Cloud platform. Ping status allows you to verify the correct configuration of the APN - if the device is connected to the network, but does not communicate with the platform, it is most likely caused by a wrong APN configuration

• Firmware Version - logger’s software version

Popular issues

Logger doesn’t switch on

If red and green diodes keep blinking, it means that the logger is in a reset loop due to the low voltage of the battery. To solve this problem, replace the battery pack with a new one.

Logger doesn’t send the data

If the logger is taking measurements, and they are visible in Efento Logger, but it doesn’t send the data to Efento Cloud please check:

• SIM card – make sure that SIM card is active and dedicated for NB-IoT / LTE-M devices

• Range – make sure that there is NB-IoT / LTE-M coverage in the place where you want to use the logger

• APN settings – some networks require manual APN set up. Please contact your operator and obtain APN configuration.

• Temperature in which logger operates – If the temperature is below the range declared in the datasheet, the logger will not be able to send the data over NB-IoT. This is due to the voltage required by the NB-IoT module. If you need to measure low temperatures, please use the logger with an external temperature probe

Other issues

If you experience any other problems with Efento NB-IoT loggers or require any information that is not covered in this user manual, please contact our support team. We will be happy to assist you.