5-10
5.6.16 CO
2
Module Problems
5.6.17 Software Upgrade Problems
Symptoms Possible Cause Troubleshooting
CO
2
Sensor High Temp
Ambient temperature is
too high or there is a
module failure.
Lower the operating temperature. If the
alarm persists, the CO
2
module may fail.
Change the CO
2
module.
CO
2
Zero Failed The zeroing failed.
Wait for next successful zeroing, or
repower the module.
CO
2
No Filterline
The mini water trap
disconnected.
Make sure that the mini watertrap and
sampling line is connected.
CO
2
FilterLine
Occluded
The airway or mini water
tarp is occluded.
Check the airway and remove the
occlusion.
CO
2
frequently zeroes
during the first hour
after start-up.
The CO
2
module
temperature is not stable.
No action is required. The zeroing does
not affect measurement accuracy. The
zeroing frequency will decrease over the
time.
Symptoms Possible Cause Troubleshooting
Boot file upgrade fails
Power failure or
unintended power off
during boot file upgrade
Replace the main board.
Program upgrade fails
Incorrect network
connection
1. Check the network connector on the
monitor.
2. Make sure that the hub or switch
runs normally. Check that net twines
are of the right type and have been
connected correctly.
Wrong upgrade package
has been downloaded
Select package according to system
requirement. Upgrade package shall
be .pkg files.
Incorrect IP address
configuration
Configure a fixed IP address for the
monitor. We recommend not to
upgrade a program when the monitor
is connected to a network with
multiple PCs.
Battery abnormal after
upgrading the power
management program
Fails to power cycle the
monitor after upgrading
the power management
program
Upgrade the power management
software again and then power cycle
the monitor.
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