| Error | Likely cause | Suggested solution |
|---|---|---|
| Temperature measurement error. [44] | Temperature sensor is short circuited, damaged, or missing. | Check that the legs of the temperature sensor are not short circuited. Contact Vaisala if the temperature sensor is damaged. |
| Humidity measurement error. [45] | Humidity sensor is wet. | Wait for the humidity sensor to dry, or remove the filter and gently dry the sensors and the filter with clean instrument air. |
| Humidity sensor failure. [46] | Humidity sensor is damaged or missing. | Replace the humidity sensor or contact Vaisala. |
| Ambient temperature out of range. [48] | Ambient temperature is too high. | Lower the temperature at the installation site. |
| Supply voltage out of range. [55] | Supply voltage is too low. | Check and correct the power supply and wiring. |
| Capacitance reference error. [47] | Internal transmitter failure. | Power-cycle the device, and if necessary, restore the factory settings. If the error remains, contact Vaisala. |
| Firmware checksum mismatch. [49] | ||
| Device settings corrupted. [50] | ||
| Additional configuration settings corrupted. [51] | ||
| Sensor coefficients corrupted. [52] | ||
| Main configuration settings corrupted. [53] | ||
| Non-volatile memory read/write failure. [57] | ||
| Calibration certificate checksum mismatch. [58] |
In case of constant error, contact Vaisala.