Diagnostic codes
6-18
10070389 Rev. A
Puritan Bennett™ 700 Series Ventilator System Service Manual
7124
POST
Inspiration pressure too high
1. Verify tubing between inspiration
manifold and pressure transducer is
securely connected.
2. Replace pressure solenoid PCB.
7125
POST
Exhalation pressure too low
1. Verify tubing between exhalation
assembly, autozero solenoid, and
pressure transducer is securely
connected.
2. Replace pressure solenoid PCB.
7126
POST
Exhalation pressure too high
1. Verify tubing between exhalation
assembly, autozero solenoid, and
pressure transducer is securely
connected.
2. Replace pressure solenoid PCB.
7127
POST
Exhaled flow too low
1. Make sure room temperature is not too
low. Make sure that ventilator has
warmed up and exhaled flow attained
a steady-state temperature.
2. Replace flow sensor.
3. Replace pressure solenoid PCB.
7128
POST
Exhaled flow too high
1. Make sure exhaled gas temperature is
stable.
2. Replace flow sensor.
3. Replace pressure solenoid PCB.
7129
POST
Oxygen supply pressure too
low
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. Calibrate oxygen regulator pressure
transducer.
4. Replace oxygen regulator pressure
transducer.
5. Replace pressure solenoid PCB.
6. Replace oxygen regulator assembly.
7130
POST
Oxygen supply pressure too
high
1. Calibrate oxygen regulator pressure
transducer.
2. Replace oxygen regulator pressure
transducer.
3. Replace pressure solenoid PCB.
4. Replace oxygen regulator assembly.
7131
POST
Absolute inspiration pressure
too low
Replace pressure solenoid PCB.
7132
POST
Absolute inspiration pressure
too high
Replace pressure solenoid PCB.
Table 6-1: Diagnostic codes (continued)
Code
Software
Possible cause
Corrective action
Summary of Contents for Puritan Bennett 700 Series
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