Respironics ESPRIT Service Manual page 73

REF 580-1000-02 G
Diagnostic
Code Code Description
2157 Exhalation transducer autozero
failure.
Block patient wye test (test 1): with
no pressure in the circuit, the
inspiratory pressure transducer
(PT3) and exhalation pressure
transducer (PT2) are cross-checked.
This code indicates that the PT2
measurement was out of range.
3xxx: Failures During Extended Self Test (EST)
Test numbers refer to tests within EST and are illustrated in the pneumatic schematics in
NOTE: Because EST requires a functioning blower, always verify that the
blower is operating before troubleshooting.
3000 EST passed.
3100 Cancelled by user.
3103 Air flow out of range.
Air delivery test (test 8): flow rates
of 0 and 3 LPM (±1 LPM), 5, 10,
20, 23, 50, 100, 150 and 200 LPM
(±8 LPM) are set through the air
valve as measured at the air flow
sensor (FS1). This code indicates
that FS1 measured out of range
flows.
3104 Oxygen flow out of range.
Oxygen delivery test (test 6): flow
rates of 0 and 3 LPM (± LPM), 5,
10, 20, 23, 50, 100 and 150 LPM
(±8 LPM) are set through the oxygen
flow sensor (FS2). This code
indicates that FS2 measured out of
range flows.
3105 Exhalation flow outside range.
Heated filter back pressure test (test
12): a 100 LPM air flow rate is
established in the patient circuit
with the exhalation valve open. This
code indicates that the exhalation
flow sensor (FS3) measurement is
<90 LPM or >110 LPM, and the
FS3 measurement is displayed.
Esprit® Ventilator Service Manual © Respironics, Inc.
Recommended Repair
1. Check for crimped tube.
2. Check exhalation solenoid (Chapter
5).
3. Replace sensor PCB.
4. Replace three-station solenoid
assembly.
5. Replace main to sensor cable.
6. Replace analog PCB.
7. Replace main PCB.
Appendix A of this manual.
No action required.
No action required
1. Check air flow sensor accuracy
(Chapter 5). Replace if necessary.
2. Check air valve (Chapter 5).
3. Replace air valve assembly.
4. Replace air motor controller PCB.
1. Check oxygen valve (Chapter 5)
2. Verify adequate source pressure and
flow rates.
3. Try another oxygen source:
flowmeters or other restrictions can
limit flow even with sufficient
pressure.
4. Check oxygen flow sensor (Chapter
5).
5. Replace oxygen motor controller
PCB.
1. Check circuit integrity.
2. Replace exhalation filter.
3. Check exhalation flow sensor
(Chapter 5)
4. Check orientation of exhalation check
valve CV4.
Chapter 6
Diagnostic Codes
6-7