Philips Efficia DFM100 - Page 202

17: Troubleshooting Symptoms
190
Table 53 EtCO
2
Problems
Symptom Possible Cause Potential Solution
The numeric value is
replaced with a
.
The sensor is warming up. No action required. As soon as the sensor has warmed
up and there is a detectable breath, the question mark is
removed from the display.
See the remainder of this
table for other possible
causes.
Check the associated technical alarms and address the
problem.
You have a Capnogram but
the numeric has a question
mark in front of it.
The sensor is warming up. No action required. As soon as the sensor has warmed
up, the question mark is removed from the display.
The Capnogram does not
appear on the display.
The Capnogram is not
configured to be displayed.
Use the Displayed Waves menu to select a wave sector
to display the Capnogram.
The Capnogram has a
dashed line.
The sampling line is not
properly connected
Check all connections.
Check sampling line for knots, kinks or pinches.


or 

prompts.
See Table 23 “Zeroing Messages” on page 107 for possible causes and solutions.
 technical
alarm.
The CO
2
sensor has reached
its end of life.
Replace your sensor with a newer one.

technical alarm.
The CO
2
sensor is over
heated.
Move any adjacent devices that may be heating the CO
2
sensor and remove anything covering the CO
2
sensor so
that it is directly exposed to ambient air at a
temperature below 40° C.
Unplug the sensor and wait for it to cool down. If you
still get an over temp alarm, replace the sensor.
 The CO
2
sensor is
malfunctioning.
Replace the sensor
 The CO
2
sensor is
connected but cannot
communicate with the
Efficia DFM100.
Unplug the CO
2
sensor and wait 10 seconds. If the
communication failure alarm remains, the Efficia DFM
100 requires servicing. If the alarm changes, plug the
sensor in firmly. If the Communication Failure returns,
replace the CO
2
sensor.
 technical
alarm.
Your sensor needs to be
zeroed.
Disconnect sampling line from the patient and zero the
sensor. See “Zeroing Sidestream and Mainstream
Sensors” on page 106.

technical alarm.
Your sensor has not reach its
proper operating
temperature.
No action required. The technical alarm is removed
when the sensor reaches its operating temperature.
 technical
alarm.
The CO
2
value is out of the
measurement range.
Zero the sensor. If the error remains and you suspect a
false high value, replace the CO
2
sensor.
 technical
alarm.
For Sidestream sensors - your
sampling line is kinked or
blocked.
Check the sampling line for kinks or blockages and
remove if found.
Replace sampling line.