D - 7
D.2.8 C.O. Technical Alarm Messages
D.2.9 CO
2
Technical Alarm Messages
Alarm message Default priority Indication on
alarm reset
Cause and solution
TB Sensor Off Low A Check the sensor connection and reconnect the
sensor.
TI Sensor Off Low A Check the sensor connection and reconnect the
sensor.
Alarm message Default priority Indication on
alarm reset
Cause and solution
CO2 Module High Temp Low C Ambient temperature is too high or there is a
module failure.
1. Lower the operating temperature.
2. Replug the module.
3. If the alarm persists, the CO
2
module may fail,
contact your service personnel.
CO2 Module Low Temp Low C Ambient temperature is too low or there is a
module failure.
1. Raise the operating temperature.
2. Replug the module.
3. If the alarm persists, the CO
2
module may fail,
contact your service personnel.
CO2 Zero Failed Low C For mainstream CO
2
module, check the
connections between the adapter and CO
2
transducer. Wait till the sensor’s temperature
becomes stabilized, and then perform a zero
calibration again.
For sidestream CO
2
module, replug the module. If
the alarm persists, contact your service
personnel.
CO2 No Watertrap Low B Check the watertrap connections.
CO2 High Airway Press. Low C 1. Check the airway pressure settings of the
ventilator/anesthesia machine.
2. Disconnect the module from the ventilator/
anesthesia machine.
3. Replug the module.
4. If the alarm persists, contact your service
personnel.
CO2 Low Airway Press. Low C 1. Check the airway pressure settings of the
ventilator/anesthesia machine.
2. Disconnect the module from the ventilator/
anesthesia machine.
3. Replug the module.
4. If the alarm persists, contact your service
personnel.
CO2 High Barometric Low C The ambient pressure exceeds the operating
pressure range or CO
2
module fails.
1. Make sure that the ambient pressure meets the
specifications, and check for sources that affect
the ambient pressure.
2. Replug the module.
3. If the alarm persists, contact your service
personnel.
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