On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Troubleshooting TH_ERROR_PA_RATE_OUT_OF_RANGE when LIFEPAK 15 pacing rate output does not match the selected pacing rate.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- If the LIFEPAK 15 is connected to a patient or being prepared for pacing, remove it from patient use immediately.
- Provide clinical staff with another verified defibrillator/pacer before troubleshooting continues.
- Expected: Patient care continues with a reliable device.
- Why it matters: A pacing rate out of tolerance can affect therapy delivery and should not be evaluated during active patient care.
Verify the Reported Error and Behavior
- Confirm the exact error reported is TH_ERROR_PA_RATE_OUT_OF_RANGE.
- Check the service log for therapy service code a010.
- Note whether the error occurred during startup, operational check, pacing setup, or actual pacing use.
- Observe whether the device reports a selected pacing rate and an actual pacing rate that do not match within tolerance.
- Expected: The error is confirmed in the service log or reproduced during controlled testing.
- Why it matters: This confirms a true therapy/pacer rate control fault instead of a user setup issue.
Remove the Device From Service
- Do not return the LIFEPAK 15 to clinical use after this error is confirmed.
- Label the unit Out of Service and follow facility policy for defibrillator removal, backup replacement, and notification.
- Expected: The affected defibrillator is isolated from patient care.
- Why it matters: This error relates to pacing output accuracy, not a simple accessory or display issue.
Check External and Simple Causes First
- Inspect the device exterior, therapy cable, pacing/therapy connector, and pads connection area for obvious damage, contamination, bent pins, fluid intrusion, or loose connections.
- Expected: No external damage or contamination is found.
- If damage is found, document it and keep the device out of service.
- Why it matters: External damage may contribute to therapy delivery faults or may indicate the device was dropped, exposed to fluids, or mishandled.
Verify Power Condition
- Confirm the device has known-good batteries installed and/or is connected to appropriate external power if testing is performed on the bench.
- Check for low battery, battery communication issues, or unexpected shutdown behavior.
- Expected: The unit powers normally without power instability.
- Why it matters: Therapy testing should not be interpreted from an unstable power condition.
Confirm the Issue Is Not Accessory-Related
- If facility procedure allows bench evaluation, test with known-good therapy cable and appropriate test load/analyzer setup.
- Do not use patient pads or patient connections for troubleshooting.
- Expected: The error remains associated with the defibrillator/pacer system, not the external cable or accessory.
- Why it matters: Accessory substitution helps rule out simple external contributors before repair escalation.
Do Not Attempt Clinical Use Testing
- Do not attempt to “try pacing again” on a patient or rely on the device because pacing appears to start.
- A pacing rate tolerance error means the selected pacing rate and actual delivered rate may not agree.
- Expected: Troubleshooting remains controlled and non-clinical.
- Why it matters: Intermittent or inaccurate pacing behavior can create direct patient risk.
Process the Therapy Service Code
- Record therapy service code a010 and process the device according to facility corrective action procedure.
- Include the error name, selected pacing rate if available, actual measured/reported rate if available, and when the fault occurred.
- Expected: The fault is documented clearly for repair evaluation.
- Why it matters: The error parameter may help repair personnel identify whether the rate control issue is repeatable or range-dependent.
Perform Pacer Characteristic Testing After Corrective Action
- After repair or corrective action, verify pacer performance using appropriate test equipment before return to service.
- Confirm pacing rate accuracy across required settings per facility or service procedure.
- Expected: Pacer rate output matches selected settings within tolerance, and required performance testing passes.
- Why it matters: A device with a pacing rate fault must not be returned to service based only on clearing the error message.
Return to Service Only After Passing Verification
- Return the LIFEPAK 15 to clinical use only after the error is cleared, corrective action is complete, and pacer characteristic testing passes.
- Expected: Final status is documented as safe for use.
- Why it matters: Defibrillator/pacer therapy functions require objective verification before clinical release.
If the Problem Persists
If TH_ERROR_PA_RATE_OUT_OF_RANGE or therapy service code a010 remains present after basic external checks, known-good accessories, and controlled bench evaluation, the likely condition is an internal pacer/therapy control fault.
Remove the device from service, label it Out of Service, and send it for repair or formal bench evaluation.
This is not a normal user-correctable issue. Knowing when to stop is proper troubleshooting.
Clinical Use Tip
Never troubleshoot pacing output problems on an active patient. Transfer pacing/defibrillation readiness to another verified defibrillator before evaluating the LIFEPAK 15 so therapy continuity is maintained.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"LIFEPAK 15 reported TH_ERROR_PA_RATE_OUT_OF_RANGE with therapy service code a010. Pacing rate was reported out of tolerance, with selected pacing rate not matching actual rate."
Cause
What was observed during troubleshooting.
Example:
"External inspection and basic power/accessory checks did not identify a correctable external issue. Error indicates a pacer rate tolerance fault requiring corrective action and pacer characteristic verification."
Resolution
What action was taken.
Example:
"Removed LIFEPAK 15 from service and labeled Out of Service. Documented therapy service code a010 and sent unit for repair/bench evaluation. Pacer characteristic testing required before return to use."
Helpful Details to Include (If Known)
- Alarm behavior, including when TH_ERROR_PA_RATE_OUT_OF_RANGE appeared and whether the error was repeatable.
- Accessories swapped, including therapy cable, pads connection area, known-good cable, or test load used.
- Power behavior, including battery condition, external power status, low battery messages, battery communication issues, or unexpected shutdowns.
- Environmental factors, including signs of damage, fluid intrusion, heat, odor, impact, contamination, or bent pins.
- Indicator lights, service log information, therapy service code a010, selected pacing rate, and actual reported or measured pacing rate.
- Final device status, including whether the LIFEPAK 15 remained Out of Service, was sent for repair, or passed pacer characteristic testing before return to use.
Final Thought
A pacing rate out-of-tolerance error on a LIFEPAK 15 should be treated as a therapy function reliability issue. Clinical Engineering should confirm the reported error, rule out obvious external causes, remove the device from service, and require pacer characteristic testing after corrective action before the device returns to patient care.
That is successful troubleshooting.