What to do if MSA Gas Detectors display 'F112/F212 Zero Calibration Failed Fault'?
- SSteven VangAug 18, 2025
If your MSA Gas Detectors display an 'F112/F212 Zero Calibration Failed Fault', use the “Reset Sensor” entry in main menu to reset the fault. Re-calibrating the sensor will also clear the fault. Replace the sensor if this fault persists.






