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What This Guide Helps With
Troubleshoots charging, AC-power, battery-status, environmental, and operating conditions associated with inadequate battery charging or unexpectedly short runtime.
Step-by-Step Troubleshooting
1. Protect the Patient and Maintain Therapy
Do not test questionable battery operation while a patient depends on the Airvo 3. If reliable operation cannot be assured, place the patient on an appropriate verified alternative device or maintain the Airvo 3 on reliable AC power as clinically appropriate.
Expected outcome: Patient therapy is not dependent on an unverified battery.
2. Confirm the Battery Complaint
Determine whether the battery does not indicate charging, never reaches an expected state of charge, discharges unusually quickly, or causes the device to shut down when AC power is removed.
Record displayed battery indicators or messages and determine the conditions under which the problem occurs.
Expected outcome: The charging or runtime problem is clearly defined.
3. Verify Reliable AC Power
Confirm the Airvo 3 is connected to an approved functioning receptacle and that the external power connection is secure. Test the outlet using approved methods or compare operation at a known-good outlet.
Expected outcome: Reliable AC power is available to the device. If charging begins normally after correcting the outlet or connection, the cause has been identified.
4. Inspect the Power Cord and Accessible Connections
Inspect the power cord, plug, and accessible connection points for looseness, physical damage, contamination, or overheating.
Replace damaged external power components only with approved compatible components.
Expected outcome: The charging path is not being interrupted by an obvious external power connection problem.
5. Review Battery and Charging Indications
With the device connected to AC power, observe the normal battery and charging indications. Note warnings, unusual status changes, or failure to recognize the battery.
Do not access internal battery connections or bypass battery monitoring.
Expected outcome: The device recognizes the battery and indicates normal charging behavior. Persistent abnormal indication requires further evaluation.
6. Allow an Appropriate Charging Opportunity
If the battery was deeply discharged or the device had been stored, allow it to remain connected to reliable AC power under normal approved conditions before evaluating runtime.
Do not declare the battery defective solely because it was initially at a low state of charge.
Expected outcome: Battery charge indication increases appropriately. If charging remains absent or abnormal, proceed to escalation.
7. Consider Operating Conditions
Determine whether short runtime was observed under unusual operating conditions, after extended storage, repeated battery operation, or in an inappropriate environmental condition. Confirm ventilation openings are unobstructed and the device is being operated within its intended environment.
Expected outcome: No external operating condition explains the reduced runtime, or correcting the condition restores acceptable operation.
8. Compare Battery Performance Under Controlled Conditions
If permitted by facility procedure and manufacturer guidance, operate the device off AC power in a controlled nonclinical setting and observe battery behavior. Do not rely on an improvised runtime threshold.
Use manufacturer documentation or approved service criteria when determining whether runtime is acceptable.
Expected outcome: Battery operation is stable and consistent with applicable service criteria. If not, remove the unit from service for battery-system evaluation.
9. Complete Final Functional Verification
After correcting an AC connection or charging problem, verify reliable AC operation, charging indication, transition to battery operation if applicable, alarms, airflow, and normal device function.
Expected outcome: Charging and battery operation are reliable. Troubleshooting can stop when required return-to-service testing passes.
10. Escalate Persistent Battery Problems
If external AC power and connections are correct but the battery is not recognized, will not charge, or cannot meet approved runtime expectations, stop external troubleshooting.
Expected outcome: The Airvo 3 is removed from service for qualified battery or charging-system evaluation.
If the Problem Persists
External AC supply, power connections, charging opportunity, and obvious environmental causes have been ruled out. A persistent problem may involve battery deterioration, the charging system, battery monitoring, power electronics, or another internal service-level condition.
Remove the device from service, label it Out of Service, and send it for bench evaluation or repair. Use appropriate Fisher & Paykel Healthcare documentation and approved test equipment. Battery replacement or internal repair should be performed only by qualified personnel.
Verify charging, battery operation, alarms, and overall functional performance before return to clinical service. Stopping once the problem exceeds safe external troubleshooting boundaries is appropriate troubleshooting.
Clinical Use Tip
Do not use an Airvo 3 with questionable battery reliability where loss of AC power could interrupt necessary respiratory support.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Clinical staff reported the Airvo 3 battery was not charging while the unit was connected to AC power."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found the power cord connection at the device was loose, preventing consistent AC operation and charging."
Resolution
What action was taken.
Example:
"Clinical Engineering secured the connection, verified normal charging indication and battery operation, and completed functional testing before return to service."
Helpful Details to Include (If Known)
- Battery indication at time of complaint
- AC power status
- Outlet verification
- Power cord condition
- Whether the battery was recognized
- Charging indication observed
- Storage or recent usage conditions
- Battery operation test result
- Any displayed battery messages
- Final device status
Final Thought
Battery complaints should be approached by verifying patient safety, AC supply, connections, charging behavior, and operating conditions before assuming battery or charging-system failure. Escalate unresolved faults and clearly document the verified findings and final status.
That is successful troubleshooting.