Troubleshooting - Nonin Avant 4100 Operator's Manual

T r o u b l e s h o o t i n g
Problem
The display unit will
not activate.
The display unit will
not operate on
batteries.
You are unable to
obtain a green pulse
display on the
bargraph.
NOTE: In some
instances, patient perfusion
may be inadequate for pulse
detection.
38

Troubleshooting

Possible Cause
The unit has no power.
The battery pack is not
connected.
The battery pack is not
charged.
The battery pack is
inoperable.
The patient pulse
strength is low or
perfused poorly.
Circulation is reduced
because of excess
pressure on the sensor
(e.g., between the sensor
and a hard surface).
The digit is cold.
The patient module is not
paired to the display.
Possible Solution
Plug in the AC adapter.
Check the battery pack
connection.
Plug in the AC Adapter to
charge the battery pack.
Contact your distributor or
NONIN Customer Support
for repair or replacement.
Reposition the digit or insert a
different digit, and keep the
sensor motionless for at least
10 seconds.
Warm the digit by rubbing or
covering with a blanket.
Position the sensor at a
different site.
Allow the hand to rest
comfortably without squeezing
or pressing the sensor on a
hard surface.
Warm the digit by rubbing or
covering with a blanket.
Position the sensor at a
different site.
Make sure the patient module
is paired with the display.
Verify that the Connection
Status LED is green on both
the display unit and the patient
module.