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What This Guide Helps With
Error 33 indicating motor control failure causing the pump to stop, fail to run, or be unable to deliver enteral feeding safely.
Step-by-Step Troubleshooting
1. Ensure Patient Safety First
- Stop feeding immediately
- Remove the pump from patient use
- Transfer feeding to a backup pump
2. Verify the Reported Error and Behavior
- Power on the pump and confirm Error 33 is displayed
- Note if the error appears at startup or during operation
- Observe if the motor attempts to run
- Listen for unusual noises such as clicking or grinding
3. Perform a Power Cycle
- Turn the pump OFF
- Disconnect from AC power
- Remove the battery if accessible
- Wait 30–60 seconds
- Restore power and restart
4. Check Power Source and Battery Condition
- Plug the pump into a known-good outlet
- Verify charging indicators function properly
- Attempt operation on AC power only
5. Inspect Pump Mechanism Area (External Only)
- Open the pump door
- Remove the feeding set
- Check for debris or dried formula
- Ensure the rotor spins freely without resistance
6. Test with a Known-Good Feeding Set
- Install a new or verified working feeding set
- Attempt to operate the pump
7. Attempt Operation and Observe Motor Response
- Run the pump off patient
- Check if the motor engages or stalls
- Observe for lack of movement or abnormal behavior
If the Problem Persists
If Error 33 continues after power cycle, external checks, and accessory replacement:
- External causes have been ruled out
- Remove the device from service
- Label the unit Out of Service
- Send for repair or bench evaluation
Clinical Use Tip
Never troubleshoot a feeding pump on an active patient. Always move the patient to a backup device before beginning troubleshooting.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Pump displaying Error 33 and not delivering feeding."
Cause
What was observed during troubleshooting.
Example:
"Motor control failure confirmed; error persisted after power cycle and external checks, indicating likely internal motor or control board fault."
Resolution
What action was taken.
Example:
"Removed from service, labeled out of service, and sent for repair."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Motor control failures should be addressed by ruling out power, setup, and mechanical resistance first. If the issue persists, escalation is necessary to ensure safe operation and prevent further damage. Proper documentation supports trend tracking and equipment reliability.
That is successful troubleshooting.