Troubleshooting, Maintenance, And Calibration; Troubleshooting: Error Indications And Interpretation - Welch Allyn 420 Series Operator's Manual

Troubleshooting, Maintenance, and Calibration

Troubleshooting: Error Indications and Interpretation

The following table of conditions and error codes provides a quick reference of the descriptions
and probable causes of error codes. For service-level troubleshooting, refer to the service
manual.
Press the white Blood Pressure Start/Stop button to reset flashing patient alarm conditions.
General Error Codes
Code
E11 Internal safety violation
C12 Ambient temperature out of range
C13 Battery failure
E0.0 - E9.9 Temperature module malfunction
E20 - E50 General internal malfunction
Blood Pressure Error Codes
Code
C02 Auto-zero failure
C03 Inflation too rapid
C04 Excessive inflation time
C05 Excessive noise
C06 Measurement was outside of device's
measurement range
E10 Cuff overpressure condition
Temperature Error Codes
Code
C20 Broken/missing probe
P Loss of tissue contact
Spot Vital Signs
Description
Description
Description
Corrective Action
Check patient, contact Customer Service.
Adjust temperature or device location.
Use wall transformer.
Contact Customer Service.
Contact Customer Service.
Corrective Action
Check for air obstruction, limit patient
movement.
Check for kinked hose or air obstruction.
Check for air leaks.
Check patient condition, cuff placement,
limit patient movement.
Check patient condition.
Check patient condition.
Corrective Action
Replace probe.
Insure proper probe positioning.
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