Status and Error Codes
Operation
3 - 50
Accutorr V Operating Instructions
3.17.5
Masimo SpO
2
Module Alarm Messages
ALARM MESSAGE
A
B
LEVEL
CAUSE
ACTION
SPO2 SENSOR OFF
No
Yes
*
The sensor is
disconnected from the
patient or the monitor.
Make sure that the sensor
is placed at an
appropriate position and
the monitor is connected to
cables correctly.
SPO2 PULSE SEARCH
No
No
L
The monitor is searching
for the patient’s pulse
signal.
If the pulse reading is not
displayed after 30
seconds, check if the
sensor is properly
connected to the patient.
Change the sensor site for
better signals if necessary.
SPO2 INTERFERENCE
No
No
L
The pulse signals are
subject to great external
interference.
Reduce or remove external
interference.
SPO2 LOW
PERFUSION
No
No
L
The pulse signal is too
weak.
Move the sensor to a site
with better perfusion.
SPO2 TOO MUCH
LIGHT
No
No
L
Too much light on the
sensor.
Turn down or off the
lighting, move the sensor
to a place of weaker light
or cover the sensor.
UNKNOWN SPO2
SENSOR
No
No
L
The monitor cannot
recognize the SpO
2
sensor type.
Check whether the type of
the sensor is correct.
SPO2 BOARD FAULT
No
No
L
The SpO
2
board
malfunctions and might
not be able to measure
the pulse signals
correctly.
Stop using the SpO
2
module, and contact
biomedical engineers or
service for maintenance.
SPO2 SENSOR FAULT
No
No
L
The sensor is damaged.
Stop using the sensor.
SPO2 NO SENSOR
No
Yes
L
The sensor is
disconnected from the
patient or the monitor, or
the sensor is not properly
connected.
Disconnect and reconnect
the sensor as directed by
the instructions. If the
alarm remains, the sensor
or the cable might have
been damaged.
SpO
2
sensor is reversed.
Disconnect and reconnect
the sensor as directed by
the instructions. Pay
attention to the mark on
the sensor.
SPO2 WEAK SIGNAL
No
No
L
The pulse signals
detected by the monitor
are of poor quality.
Move the sensor to a site
with better signals.
SPO2 SENSOR CHECK
No
No
L
WRONG SPO2
SENSOR
No No
L
The
SpO
2
sensor is
incompatible to the
monitor, or is damaged.
Stop using the sensor.
The “A” field indicates whether all alarm indications can be cleared or not, and the “B” field indicates whether all alarm
indications except the alarm message can be cleared or not. The alarm levels are H = high and L = low.
* The alarm level is user-adjustable.
