Chapter 7: Maintenance and Troubleshooting 51
Error Code Possible Causes Corrective Action
68 Pressure sensor divider calibration out of
range.
Return to factory.
69 A to D reference voltage out of range. Return to factory.
70 5V reference voltage out of range. Return to factory.
71, 72 An invalid K-Factor was corrected. The micromanometer has set the K-
factor to 1.0 to correct it.
74 Pressure voltage for user pressure
calibration out of range.
Re-do user calibration.
75 User temperature calibration >5°F (3°C)
different from factory calibration.
Re-do user calibration.
Replace temperature probe.
>100 Internal program error. Please contact the factory.