If the HM70 displays an error message, check first that the sensor is connected properly. If there is condensed water in the probe, let the probe dry before resuming measurement.
In case of constant error, contact Vaisala (see Technical support).
| Possible HM70 error messages |
|---|
| Voltage required for Purge unavailable |
| Voltage required for Preheat unavailable |
| Eeprom read/write error |
| ADC malfunction |
| Operating voltage out of range |
| Analog voltage out of range |
| Temperature/Humidity sensor open/short circuit |
| Temperature sensor current leak |
| Temperature/humidity measurement malfunction |
| Temperature value out of range |
| Relative humidity value out of range |
| Sensor not found |
| Amplifier chain malfunction |