REF 580-1000-02 G
Esprit® Ventilator Service Manual © Respironics, Inc.
6-1
Chapter 6. Diagnostic Codes
The Esprit Ventilator generates diagnostic codes when the microprocessor
detects a fault during normal operation, or if a failure occurs during SST or
EST. Table 6-1 lists diagnostic codes, and recommended repair procedures for
each code. Perform the repair procedures in the order listed until the problem
is resolved. (See Chapter 8 for performance verification procedures, Chapter 9
for component replacement procedures, and Appendix A for EST pneumatic
schematics by test number.)
NOTE:
Because the troubleshooting procedures for two diagnostic codes (1012
and 5000) are more detailed, they are described in “Diagnostic Code
1012 Troubleshooting” on page 6-24 and “Diagnostic Code 5000
Troubleshooting” on page 6-27.
The first digit of the four-digit diagnostic codes indicates the type of fault:
1xxx: Failure during power on self test (POST).
2xxx: Failure during short self test (SST).
3xxx: Failure during extended self test (EST).
4xxx: Continuous built-in test failure (failures during normal ventilation).
5xxx: Safety valve open/Backup battery not connected.
6xxx: Not used.
7xxx: Power supply failure.
8xxx: Software diagnostic information.
9xxx: Sensor/internal communication fault.
Diagnostic
Code
Code Description
Recommended Repair
1
Ventilator normal mode startup. Air/
O
2
valve liftoff positions logged.
Occurs when ventilator is ON: no action
required.
3
Diagnostic startup. Air/O
2
liftoff
positions logged.
Occurs when diagnostics invoked: no
action required.
