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Asset Type
Manufacturer
Model
What This Guide Helps With
Alarm indicating no air supply, resulting in loss of ventilation support due to disconnected gas source or insufficient compressed air pressure.
Step-by-Step Troubleshooting
1. Ensure Patient Safety First
- Immediately assess the patient
- Provide alternate ventilation (bag-valve mask or backup ventilator) if needed
- Confirm adequate oxygenation and ventilation
2. Verify the Reported Alarm and Behavior
- Confirm “No Air Supply” alarm is present on the display
- Observe if ventilation delivery is reduced or absent
- Note when the alarm occurs (startup or during use)
3. Check Wall Air Supply Connection (Most Common Cause)
- Ensure air hose is securely connected to both wall outlet and ventilator
- Disconnect and reseat the hose firmly
- Confirm proper engagement of connectors
4. Verify Wall Air Supply Pressure
- Confirm wall outlet is active and supplying air
- Test outlet with another device if available
- Check pressure indicators if present
5. Inspect Air Hose and Fittings
- Check for kinks, cracks, or leaks in hose
- Inspect fittings for damage or looseness
- Swap with a known-good hose if available
6. Check Compressor (If Used Instead of Central Air)
- Verify compressor is powered on
- Check for compressor alarms or faults
- Confirm adequate output pressure
7. Run System/Self-Test
- Initiate device system test per manufacturer procedure
- Observe for air supply-related failures
8. Evaluate Findings
- If issue resolves after reconnecting or replacing components → external cause confirmed
- If alarm persists despite confirmed supply → possible internal issue
If the Problem Persists
If all external air sources, hoses, and pressures are verified and the alarm continues:
- Remove the ventilator from service
- Label the device as Out of Service
- Send for repair or bench evaluation
Clinical Use Tip
Never troubleshoot gas supply issues while the ventilator is actively supporting a patient. Always transfer the patient to a backup device first.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Ventilator alarming 'No Air Supply' with loss of ventilation during use."
Cause
What was observed during troubleshooting.
Example:
"Air hose found disconnected from wall outlet causing loss of compressed air supply."
Resolution
What action was taken.
Example:
"Reconnected air hose, verified wall supply pressure, and confirmed normal operation. Ventilator returned to service."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Air supply alarms directly impact life-support capability. Always start with external checks, confirm gas supply integrity, and escalate appropriately to protect patient safety.
That is successful troubleshooting.