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Diagnostic codes
Puritan Bennett™ 700 Series Ventilator System Service Manual
10070389 Rev. A
6-27
9042
Ongoing hardware
checks
Oxygen regulator pressure out
of bounds
1. Make sure oxygen source pressure is at
least 40 psi.
2. Check for proper installation of oxygen
regulator pressure transducer and
connection of sensor to pressure
solenoid PCB.
3. Replace oxygen regulator pressure
transducer.
4. Replace oxygen regulator assembly.
5. Replace pressure solenoid PCB.
9043
Ongoing hardware
checks
Oxygen percentage reading
out of bounds
1. Make sure an oxygen sensor is installed
and securely connected to ventilator
head harness.
2. Check remaining sensor life (via service
summary) and replace sensor if
required.
3. Replace oxygen regulator assembly.
4. Replace pressure solenoid PCB.
9044-9060
Ongoing hardware
checks
NVRAM failure
1. See Section 6.2.
2. Restore NVRAM data.
3. Replace NVRAM.
9061
Ongoing hardware
checks
Both test and alert error logs
cleared in memory or data was
transferred to NVRAM.
No corrective action required: indicates
that an error code location in NVRAM is
now empty.
9062-9069
Ongoing hardware
checks
NVRAM failure
1. See Section 6.2.
2. Restore NVRAM data.
3. Replace NVRAM.
9070
Ongoing hardware
checks
Not Ventilating signal used in
UI/BD communications is not in
expected state.
1. See Section 6.2.
2. Replace controller PCB.
9071
Ongoing hardware
checks
Not Ventilating signal used in
UI/BD communications is not in
expected state.
1. See Section 6.2.
2. Replace controller PCB.
9073
Ongoing hardware
checks
Transducer autozero timeout
error
Replace pressure solenoid PCB.
9074
Ongoing hardware
checks
Piston not at expected location
at start of inspiration
1. If piston/cylinder was recently replaced,
make sure calibration constants were
correctly input.
2. Replace motor/encoder.
3. Replace controller PCB.
4. Replace BBU PCB.
5. Replace BBU PCB/ventilator head
harness.
6. Check mesh of pinion gear with rack.
Remesh as necessary.
7. Replace optoswitches.
Table 6-1: Diagnostic codes (continued)
Code
Software
Possible cause
Corrective action
Summary of Contents for Puritan Bennett 700 Series
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