30 Troubleshooting Welch Allyn Spot Vital Signs
Causes and corrective action
C06 Measurement was outside of device’s
measurement range
Check patient condition.
E10 Blood pressure cuff overpressure condition Check patient condition.
Table 6. Temperature
Code Description Corrective Action
C20 Broken/missing probe Replace probe.
P Loss of tissue contact Ensure proper probe positioning.
E0.2, E0.3 Ambient temperature out of range Adjust ambient temperature or device location.
C22 10-minute diagnostic time exceeded Remove probe, discard probe cover, retake
temperature.
Table 7. SpO
2
Code Description Corrective Action
E7 Internal SpO
2
error. Retake reading.
C6 SpO
2
pulse rate out of range Check patient condition.
C8 Faulty SpO
2
sensor. Replace sensor.
C9 SpO
2
time limit exceeded. Remove sensor from patient. Reapply sensor and
retake reading.
Table 5. Blood Pressure
Code Description Corrective Action
Table 8. Inaccurate Blood Pressure Readings
Possible Cause Explanation and Corrective Action
Incorrect blood pressure cuff
size.
Use Welch Allyn approved
blood pressure cuffs only.
Determine correct blood pressure cuff size.
• Use reference markings on blood pressure cuff.
• Measure patient’s arm circumference midway between elbow and shoulder to
select correct blood pressure cuff size).
Patient’s arm position Ensure patient’s arm is at heart level.
Arm movement during blood
pressure cycle
Keep arm still during blood pressure cycle.
• Movement may cause inaccuracies from artifact.
Blood pressure taken over
clothing
Take blood pressure on a bare arm.
Arrhythmia Check for regularity of heart rate (palpate pulse or check device).
• Moderate to severe heart rate irregularities may make blood pressure difficult to
measure.
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