Getinge Servo-i

Asset Type

Ventilator

Manufacturer

Getinge

Model

Servo-i

What This Guide Helps With

Troubleshooting an Edi module that is missing, intermittently detected, or unavailable for Edi monitoring, NAVA, or NIV NAVA operation.

Step-by-Step Troubleshooting

1. Ensure Patient Safety First

Do not troubleshoot an Edi or NAVA recognition problem while the Servo-i is actively supporting a patient who depends on NAVA ventilation.

• Notify respiratory therapy and the clinical team.
• Transfer the patient to another verified ventilator or an appropriate conventional ventilation mode using the facility’s approved procedure.
• Confirm effective ventilation and alarm operation before removing the affected equipment from clinical use.

Expected outcome: The patient is safely supported without relying on unavailable or unreliable Edi functionality.

Continue Clinical Engineering troubleshooting only after the affected equipment can be evaluated safely.

2. Confirm the Exact Reported Condition

Determine whether:

• The Edi module is completely absent from the interface.
• The module appears and then disconnects.
• Edi monitoring is available but NAVA cannot be selected.
• NAVA was previously available on this ventilator.
• The problem began after moving, cleaning, software servicing, or changing modules.
• A specific message, alarm, or error code is displayed.

Record the exact message and photograph the screen when permitted.

Expected outcome: The failure is identified as a module-recognition problem rather than an Edi catheter signal or positioning problem.

3. Confirm That the Servo-i Is Properly Configured for Edi/NAVA

Verify that the ventilator is a Servo-i configuration equipped and authorized for the required Edi monitoring and NAVA functions.

NAVA uses the patient’s Edi signal to control ventilatory assistance, and availability depends on the appropriate ventilator configuration, hardware, and enabled functionality.

• Review the ventilator’s installed options or configuration screen.
• Compare the affected ventilator with facility records or a known working Servo-i.
• Confirm that the reported function was previously enabled on this specific unit.

Expected outcome: Edi/NAVA functionality is confirmed as installed and expected to be available.

If the option is not installed or activated, stop troubleshooting and refer the issue to the appropriate Getinge service or licensing process.

4. Power Down the Ventilator Safely

Shut down the Servo-i using the normal power-off procedure.

• Disconnect AC power after shutdown when required for safe module handling.
• Allow the ventilator to complete its shutdown before removing or reseating accessories.
• Do not insert or remove the module while the system is starting or actively ventilating.

Expected outcome: The system is safely de-energized for an external connection inspection.

5. Inspect the Edi Module Externally

Remove the Edi module according to the facility’s approved handling procedure and inspect it for:

• Cracked or damaged housing
• Bent, recessed, contaminated, or damaged connector contacts
• Fluid residue or cleaning-solution intrusion
• Missing labels or an unreadable serial number
• Signs of impact, overheating, discoloration, or unusual odor

Do not open the module housing.

Expected outcome: The module is externally clean, dry, and free of obvious physical damage.

If damage, liquid intrusion, unusual heat, or burning odor is found, remove the module from service and stop.

6. Inspect the Ventilator Module Connection

Use adequate lighting to inspect the corresponding Servo-i module slot or connection point.

Check for:

• Debris or foreign material
• Bent or recessed contacts
• Liquid residue
• Physical obstruction
• Damaged guides, rails, or retaining features
• Evidence that the module cannot seat completely

Do not probe connector contacts with metal tools or apply unapproved cleaners.

Expected outcome: The connection area is clean, dry, unobstructed, and undamaged.

7. Reseat the Edi Module

Reinstall the module carefully and verify that it is:

• Correctly aligned
• Fully inserted
• Mechanically secure
• Flush with the surrounding assembly
• Not being pulled or shifted by attached cables

Reconnect power and restart the ventilator.

Expected outcome: The Servo-i detects the module during startup and makes the applicable Edi functions available.

If recognition is restored, complete operational verification before returning the ventilator to service, then stop.

8. Disconnect External Edi Accessories

If the module remains unrecognized, disconnect the Edi catheter cable and other external accessories from the module.

Restart or recheck the system with only the module installed.

This separates a module-recognition problem from an accessory cable, connector, or catheter-related issue.

Expected outcome: The module is recognized without the patient cable or catheter connected.

If recognition returns, inspect the disconnected cable and accessory connectors for contamination, bent contacts, strain damage, or incompatibility. Replace the suspect accessory with an approved known-good component.

9. Check the Edi Patient Cable and Connector

Inspect the Edi cable for:

• Bent or contaminated connector contacts
• Damaged locking features
• Cuts, crushing, or excessive strain
• Fluid intrusion
• Intermittent operation when the connector is lightly handled
• Incorrect or incompatible accessory type

Do not perform aggressive bending or twisting tests.

Expected outcome: The cable is intact and connects securely without causing module detection to drop.

A catheter-positioning or weak-Edi-signal problem should be handled separately after the ventilator consistently recognizes the Edi module.

10. Test With a Known-Good Compatible Edi Module

When facility policy and equipment availability permit, install a verified compatible Edi module from a functioning Servo-i.

Do not exchange modules between patients without completing required cleaning, disinfection, and infection-control procedures.

• If the known-good module is recognized, the original module is likely defective.
• If neither module is recognized, the problem is more likely associated with the Servo-i connection, configuration, software, or internal electronics.

Expected outcome: The fault is isolated to either the original Edi module or the ventilator.

If the known-good module resolves the issue, stop and route the original module for repair.

11. Test the Suspect Module on a Known-Good Servo-i

When authorized, install the suspect Edi module on another compatible, non-clinical Servo-i test system.

• If it is not recognized on either ventilator, remove the module from service.
• If it works normally on another Servo-i, the original ventilator requires further evaluation.

Expected outcome: The module or ventilator is identified as the probable source of the failure.

12. Review Software and Configuration History

Determine whether the issue began after:

• Software installation or upgrade
• Configuration restoration
• Control unit replacement
• Option installation or licensing changes
• Preventive maintenance
• Battery depletion or an abnormal shutdown

Compare the installed software and option configuration with facility records.

Do not attempt unauthorized software installation, option activation, or configuration changes.

Expected outcome: The ventilator’s configuration remains appropriate for its installed Edi/NAVA hardware.

13. Run the Approved Pre-Use Check

After reseating or substituting components, run the complete Servo-i pre-use check using the approved test circuit and gas supplies.

Confirm that:

• The ventilator completes startup without module-related errors.
• The Edi module remains recognized.
• Applicable Edi monitoring or NAVA selections are available.
• No new system alarms or faults appear.
• Standard ventilation and alarm functions pass verification.

Expected outcome: The ventilator and recognized Edi module complete operational verification without recurring faults.

Do not return the system to clinical use based only on the module appearing on the screen.

If the Problem Persists

If the Edi module remains unrecognized after configuration, seating, connectors, cables, accessories, and known-good substitution have been checked, common external causes have been ruled out.

The failure may involve:

• A defective Edi module
• Damaged module-interface contacts
• Internal communication or power circuitry
• Ventilator software or configuration corruption
• An unavailable or improperly activated NAVA option

The ventilator or affected module should be:

• Removed from service
• Labeled Out of Service
• Sent for qualified bench evaluation or Getinge-authorized repair

Do not open the Edi module or continue into internal board-level troubleshooting without the proper service documentation, training, test equipment, and authorization.

Knowing when to stop and escalate is proper troubleshooting.

Clinical Use Tip

Never troubleshoot Edi recognition, catheter connectivity, or NAVA availability while a patient depends on that function. Move the patient to verified support before manipulating modules, cables, or ventilator configuration.

Work Order Documentation (CCR Method)

CCR = Complaint, Cause, Resolution

Complaint

What was reported by the clinical staff.

Example:
"Respiratory therapy reported that the Servo-i did not recognize the installed Edi module and NAVA was unavailable."

Cause

What was observed during troubleshooting.

Example:
"The Edi module was not detected after reseating and cable removal but a known-good module was recognized, isolating the failure to the original module."

Resolution

What action was taken.

Example:
"Removed the defective Edi module from service, installed a verified replacement, completed the Servo-i pre-use check, and confirmed stable Edi module recognition."

Helpful Details to Include (If Known)

• Exact displayed message or alarm
• Whether Edi monitoring or NAVA was previously available
• Ventilator software version
• Installed option or configuration status
• Module and ventilator serial numbers
• Module seating and connector condition
• Edi cable inspection results
• Known-good module substitution results
• Known-good ventilator substitution results
• Pre-use check results
• Evidence of impact or fluid intrusion
• Unusual heat, odor, or discoloration
• Final ventilator and module status

Final Thought

Patient safety comes first when Edi monitoring or NAVA becomes unavailable. Logical substitution testing can separate an accessory, module, configuration, or ventilator fault without unnecessary disassembly. Clear CCR documentation supports safe repair decisions and prevents defective components from returning to service.

That is successful troubleshooting.