On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Self-test failure during power-on preventing AED readiness, often related to battery, pads, or environmental/storage issues.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- If this AED is needed for a patient, immediately obtain a backup AED
- Do not rely on a unit that has failed self-test
Expected: Patient care is not delayed
Why it matters: A failed self-test means the device may not deliver therapy safely
Verify the Reported Failure
- Power on the AED and observe indicators
- Audible prompts
- Status LED (flashing vs solid red)
- Any error tones or voice alerts
Expected: Confirm consistent self-test failure
Why it matters: Confirms a true fault vs transient condition
Check Battery Installation and Condition (Most Common Cause)
- Remove and reseat the battery pack
- Ensure proper orientation and full engagement
- Inspect contacts for corrosion or debris
- If available, install a known-good battery
Expected: Device powers on and passes self-test
Why it matters: Low or improperly seated batteries are the most frequent cause of self-test failures
Check Battery Expiration Date
- Inspect the battery label for expiration
Expected: Battery is within valid date
Why it matters: Expired batteries may not support internal diagnostics even if they power the unit
Inspect Electrode Pads Connection and Expiration
- Verify pads are properly connected to the AED
- Confirm pads are within expiration date
- Ensure packaging is intact (not dried out or damaged)
- Replace with a known-good pad set if needed
Expected: Device completes self-test successfully
Why it matters: AEDs perform readiness checks on pad presence and condition
Check for Environmental Factors
- Assess storage conditions
- Check for excessive heat or cold
- Check for moisture exposure
- Inspect for physical damage
- Allow the device to return to normal room temperature if needed
Expected: Device stabilizes and passes self-test
Why it matters: Environmental stress can affect internal diagnostics and battery performance
Perform a Power Cycle Reset
- Remove battery for 30–60 seconds
- Reinstall battery and power on again
Expected: Self-test completes successfully
Why it matters: Clears temporary faults or startup errors
Observe Status Indicator After Troubleshooting
- Confirm green flashing indicator (ready state)
- Ensure no audible fault tones
Expected: AED indicates ready for use
Why it matters: Confirms device readiness for emergency use
If the Problem Persists
Common external causes have been ruled out. The issue is likely internal (self-test circuitry, internal memory, or system fault).
Remove the AED from service immediately. Label the device Out of Service. Send for manufacturer-approved repair or bench evaluation.
Clinical Use Tip
Never troubleshoot an AED during an active emergency. Always move to a backup unit first, then evaluate the failed device afterward.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"AED failed self-test on power-on with audible alert and red status indicator."
Cause
What was observed during troubleshooting.
Example:
"Expired battery and electrode pads failed readiness check."
Resolution
What action was taken.
Example:
"Replaced battery and pads; AED passed self-test and returned to service."
Helpful Details to Include (If Known)
- Status indicator color before and after troubleshooting
- Battery expiration date
- Pads expiration date
- Audible tones or voice prompts
- Environmental storage conditions
- Physical condition of device
- Final device status (in service or sent for repair)
Final Thought
AED readiness is critical and non-negotiable. Always start with simple external checks like battery and pads, but escalate quickly when self-tests fail. Proper documentation and decisive action ensure patient safety and system reliability.
That is successful troubleshooting.