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What This Guide Helps With
Troubleshooting Error 302 US lower avg high indicating an abnormal lower ultrasonic sensor average reading that may prevent normal pumping, cassette detection, or safe infusion operation.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Remove the pump from active patient use if the error is present.
- Transfer infusion to a known-good pump if therapy is ongoing.
- Do not rely on the affected device for patient care during troubleshooting.
Verify the Reported Error and Behavior
- Power on the pump and confirm Error 302 US lower avg high is displayed.
- Observe when the error occurs (startup, set loading, or during infusion).
- Note symptoms such as failure to start, repeated alarms, or set detection issues.
Inspect the Pump Exterior and Set Loading Area
- Check the cassette channel for debris, dried fluid, or damage.
- Inspect for cracks or signs of impact.
- Clean accessible external areas using approved methods.
Check Administration Set Installation
- Remove and inspect the IV set for damage or misalignment.
- Ensure the cassette is properly seated and latched.
- Verify correct Baxter-compatible set is being used.
Try a Known-Good Compatible Administration Set
- Replace the current set with a new, known-good Baxter-approved set.
- Reload carefully and observe pump response.
- Determine if the error clears with a different set.
Check for Moisture or Residue Near Sensor Area
- Inspect for fluid intrusion, condensation, or cleaning residue.
- Focus on external accessible areas only.
- Ensure sensing path is clean and dry.
Perform a Full Power Cycle
- Turn the pump off completely.
- Disconnect from AC power if applicable.
- Wait briefly, then restart the pump.
Compare Behavior With and Without a Set Installed
- Observe if the error occurs without a set installed.
- Test with multiple known-good sets.
- Identify if the issue is accessory-related or internal.
Assess for Persistent Device Fault
- If the error persists after all external checks, suspect internal failure.
- Likely causes include ultrasonic sensor or internal circuitry issues.
If the Problem Persists
If Error 302 US lower avg high continues after external troubleshooting, remove the device from service, label it Out of Service, and send it for repair or bench evaluation.
Clinical Use Tip
Never troubleshoot a pump with an active sensor fault while connected to a patient. Always move therapy to a backup device first.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Pump displayed Error 302 US lower avg high and would not complete setup."
Cause
What was observed during troubleshooting.
Example:
"Cassette area inspected, sets replaced, and cleaning performed. Error persisted indicating likely internal ultrasonic sensor fault."
Resolution
What action was taken.
Example:
"Removed pump from service and sent for repair after unsuccessful external troubleshooting."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Error 302 should be treated as a sensor-related fault until proven otherwise. After ruling out setup, contamination, and accessory issues, escalation to repair is the safest and most appropriate action.
That is successful troubleshooting.