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Manufacturer
Model
What This Guide Helps With
Addresses unresponsive or intermittent controls caused by screen contamination, obstruction, power instability, startup state, external accessories, or control-system faults.
Step-by-Step Troubleshooting
1. Protect the Patient
If the Servo-air Lite cannot be reliably controlled, transfer the patient to another verified ventilator or appropriate alternate ventilation method. Expected outcome: Patient ventilation and alarm management do not depend on an unreliable interface.
2. Characterize the Failure
Determine whether the entire screen is frozen, a portion is unresponsive, another control is affected, or the problem is intermittent. Observe whether displayed values and waveforms continue updating. Expected outcome: The control failure is clearly characterized.
3. Inspect and Clean the Interface
Check for moisture, cleaning residue, tape, labels, protective material, physical damage, or objects contacting the screen. Clean and dry the exterior according to approved procedures. Expected outcome: The interface is clean and unobstructed. If normal response returns, continue functional verification.
4. Verify Stable AC Power
Connect the ventilator to a known-good AC outlet and inspect the power cord. Expected outcome: The device operates from stable power without unexplained resets.
5. Perform a Normal Restart
With the unit removed from patient use, perform a normal shutdown and restart. Do not use undocumented reset combinations or restricted service menus. Expected outcome: The touchscreen and controls initialize normally.
6. Remove Nonessential External Connections
Disconnect optional network, serial, USB, and other external accessories not needed for basic operation. Expected outcome: Controls remain responsive in a simplified configuration.
7. Check the Full Accessible Touch Area
Operate normal user-accessible screen controls and look for dead zones, delay, unintended activations, or intermittent response. Expected outcome: The full control interface responds consistently.
8. Verify Settings and Alarm Control
Confirm that settings can be selected and changed appropriately during bench testing and that alarm acknowledgement controls work normally. Expected outcome: Essential ventilator control functions are reliable.
9. Complete Pre-Use Testing
Run the required pre-use check and observe the interface throughout operation. Expected outcome: The interface remains responsive with no recurring freeze. Troubleshooting can stop.
10. Escalate Persistent Control Failure
If the display or controls remain intermittently or continuously unresponsive, stop troubleshooting. Expected outcome: The Servo-air Lite remains out of service for qualified evaluation.
If the Problem Persists
Common contamination, obstruction, AC power, startup, and external-accessory causes have been ruled out. The remaining issue may involve the display assembly, touch interface, software, control electronics, or internal connections. Remove the ventilator from service, label it Out of Service, and send it for repair or bench evaluation using appropriate Getinge documentation. Verify all operator controls, alarms, ventilation functions, startup, and pre-use checks after repair. Knowing when to stop external troubleshooting is proper troubleshooting.
Clinical Use Tip
Intermittent control response is enough to remove a ventilator from service; the touchscreen does not have to fail completely to create a patient-safety risk.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Respiratory Therapy reported intermittent touchscreen response on the Servo-air Lite during setup."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found moisture and cleaning residue on the touchscreen surface."
Resolution
What action was taken.
Example:
"Clinical Engineering cleaned and dried the display using the approved method, verified consistent touchscreen and alarm-control response, completed the pre-use check, and returned the ventilator to service."
Helpful Details to Include (If Known)
- Entire or partial touchscreen affected
- Display activity
- Residue or moisture
- Physical damage
- Power source
- Restart result
- Accessories removed
- Dead zones or intermittent response
- Pre-use result
- Final device status
Final Thought
A ventilator control interface must work consistently, not merely intermittently. Eliminate simple external causes, test the complete interface, and escalate any persistent unreliability. That is successful troubleshooting.