Measurement not working, any of the following errors active:
- Temperature sensor open circuit/not calibrated
- Humidity sensor open circuit/not calibrated
- Temperature sensor values out of range
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- Sensor(s) damaged or missing. Open the filter and check.
- Calibration is not done. Calibrate the module.
- Check the supply voltage of the module.
- Check the analog output mode using the AMODE command.
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Humidity measurement appears to be wrong. The following errors may be active:
- RH reading too high
- RH reading too low
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- Check for condensation on the probe and sensor.
- Check that you are not applying temperature compensation in the measurement
system (HMM100 has its own).
- Check for heat conduction through the cable. Place more cable in the chamber if
needed.
- Check the position of the trimmers.
- Use the L command to check the currently applied calibration
correction.
- Calibration is not done. Calibrate the module.
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The following error is active: |
- Sensor broken
- Sensor disconnected
- Sensor pins twisted and
touching
- Wrong sensor type inserted
- Sensor replaced but capacitance
not adjusted. Perform a humidity adjustment using the CRH command.
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Measurement stops, with the following errors active:
- Analog output test on, no measurements done
- MeasTask not calculating (ATEST)
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You are testing the analog output using the ATEST command.
This is normal; type ATEST to stop the test and remove this
error. |
Serial line command not working, outputs "Unknown command." |
- Mistyped or unknown command
- Command not available without using the PASS command
first
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Cannot connect to serial line, current serial settings of the module are unknown. |
Perform the following steps to connect:
- Set your terminal settings to
19200 8 N 1 (the default settings of the module).
- Connect to the service port of the module.
- Power up the module, and type "z" on the serial line at least five times.
- The module will come online with the default settings, and with the text
SERVICE MODE.
- Use the SERI command to set the desired serial settings, and
use the SAVE command to save them.
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Any of the following errors is active:
- Program checksum error
- Parameter storage checksum error
- Sensor coefficient checksum error
- Current settings checksum error
- Default settings checksum error
- Log corrupted
- Resistance measurement
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Internal error. Perform the following steps:
- Reset or power cycle the module. Check if the error is gone.
- Return the module to factory settings using the FRESTORE
command. Check again.
- If the error is still active, contact Vaisala technical support.
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