Chapter 6
Diagnostic Codes
REF 580-1000-02 G
Esprit® Ventilator Service Manual © Respironics, Inc.
6-9
3110
Check valve 3 (CV3) leak.
Patient circuit test (test 11): the
circuit is pressurized to 50 cmH
2
O
with the exhalation valve closed,
then the safety valve opens. After
two seconds, circuit pressure should
not drop below 35 cmH
2
O in adult
or ped mode, or below 41 cmH
2
O in
Neo mode. This code indicates that
circuit pressure was <35 cmH
2
O in
adult or ped mode, and <41 cmH
2
O
in Neo mode.
1. Check for patient circuit/filter leaks.
2. Verify that CV3 is in 12:00 position.
3. Verify that there is an o-ring in the
oxygen sensor or bypass.
4. Check CV3 (Chapter 5). Replace as
necessary.
5. Check tubing from SOL4 to
inspiratory manifold.
3111
Oxygen not connected.
Oxygen supply test (test 4): the
oxygen supply pressure switch (PS1)
is open when oxygen is not
connected. At the prompt to connect
oxygen, PS1 should close when 40-
90 PSI is connected. This code
indicates that PS1 remains open.
1. Check that oxygen (minimum of
40PSI/276 kPa) is connected to the
ventilator.
2. Try another oxygen hose, outlet,
quick-connect, or external regulator.
3. Check oxygen pressure switch
4. Check oxygen regulator assembly
3112
Oxygen not disconnected.
Oxygen supply test (test 4): the
oxygen supply pressure switch (PS1)
is closed when oxygen is connected.
At the prompt to disconnect oxygen,
the oxygen valve opens and closes to
relieve pressure, and PS1 should be
open. This code indicates that PS1
remains closed.
1. Check that oxygen is disconnected.
2. Check oxygen pressure switch
3. Replace oxygen regulator assembly.
3113
Oxygen sensor analog to digital
converter (ADC) sample out of range.
Oxygen sensor test (test 7): this
code indicates that the ADC
measurements are out of range and
assumes that the oxygen sensor is
not connected.
1. Replace external oxygen sensor.
2. Replace oxygen sensor cable.
3. Replace FIO
2
sensor to sensor PCB
cable.
4. Replace sensor PCB.
5. Replace analog PCB.
3115
Primary audio not sounding.
Audio test (test 13): ventilator
activates primary alarm and prompts
for a response that alarm is audible.
This code indicates that the primary
alarm is not working.
1. Verify correct key press.
2. Replace primary alarm.
3. Replace digital PCB.
4. Replace the primary alarm to MMI
PCB cable.
5. Replace MMI PCB.
6. Replace main PCB.
Diagnostic
Code
Code Description
Recommended Repair
