This fault means XD ONE has detected an electronic failure of the internal memory.
The device alerts the user and enters an error state. Contact Trolex or an approved distributor.
XD ONE uses two LED icons and audio sequences. The STEL alarm flashes the amber icon with two beeps per second, while the TWA alarm flashes the red icon with three beeps per second.
If both alarms are triggered at the same time, the TWA alarm takes priority.
Press, hold, and release the power button after two seconds. The device confirms acknowledgement with an LED sequence.
Acknowledgement silences the audio alarm while the LED remains solid if the alarm condition is still present. The alarm resets only when levels fall below 95% of the alarm setpoint.
Connect XD ONE to BreatheLITE. Users can configure device name, COM port, operating mode, alarm PM size, TWA period and threshold, STEL period and threshold, log rate, and particle density.
Use the BreatheLITE in-application help for detailed setup guidance.
Connect XD ONE to the BreatheLITE application. Captured particulate data can be downloaded, reviewed, and analysed through the BreatheLITE data analysis tool set.
The manual also notes that Live readout mode streams live particulate data while data is logged to internal memory.
In a recoverable operating error, XD ONE logs the event and automatically takes appropriate action to resolve it.
After recovery, check previous data capture and device settings before continued operation. User configuration may need to be redefined in BreatheLITE.
For a non-recoverable fatal error, XD ONE stops normal operation and alerts the user with flashing red LEDs and an audible sequence.
The manual recommends contacting the Trolex service team for support.
Internal memory corruption means corruption has been detected and data loss has occurred or readings cannot be recovered.
The device automatically formats its memory and continues operation.
If XD ONE internal memory is full, download and clear XD ONE data, event logs, and alarm logs.
Confirm important data has been downloaded before clearing stored records.
A particulate sensor data error means corrupt data was received from the particulate sensor. XD ONE ignores the reading, logs the event, and continues operation.
If this occurs more than four times, the device alerts the user and enters an error state. Contact Trolex or an approved distributor.