On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Error 116 Motor without PWM indicates uncontrolled motor movement without proper pulse-width modulation control, which can lead to unsafe or inaccurate infusion delivery.
Step-by-Step Troubleshooting
1. Ensure Patient Safety First
- Immediately remove the pump from patient use
- Transfer infusion to another pump
- Confirm therapy is safely continued
2. Verify the Reported Error and Behavior
- Power on the pump and confirm Error 116 Motor without PWM
- Observe when the error occurs (startup, infusion start, or intermittently)
- Listen for unexpected motor movement or abnormal operation
3. Check for External Mechanical Obstruction or Setup Issues
- Inspect cassette and tubing for proper loading
- Check for kinks, pinching, or excessive resistance
- Reload the administration set if needed
4. Inspect for Physical Damage or Contamination
- Look for fluid ingress near the pumping mechanism
- Check for debris or residue in the cassette area
- Inspect for visible wear or damage
5. Perform a Power Cycle
- Turn the pump off completely
- Disconnect from AC power and restart
- Observe if the error clears or returns
6. Attempt Operation with a Known-Good Setup
- Load a new, known-good administration set
- Attempt a basic infusion
- Observe for normal operation
If the Problem Persists
If Error 116 continues after external checks, external causes have been ruled out. The pump is detecting motor movement without proper PWM control, indicating an internal failure.
- Remove the pump from service
- Label as Out of Service
- Send for repair or bench evaluation
Clinical Use Tip
Never troubleshoot or use a pump with motor control errors on an active patient. Always transfer the patient to a backup device before evaluation.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Pump displaying Error 116 Motor without PWM and unable to safely run infusion."
Cause
What was observed during troubleshooting.
Example:
"Error persisted after reload and power cycle. Motor behavior abnormal indicating internal control 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 faults must be handled carefully. Always rule out external causes first, but escalate quickly when internal failure is indicated. Proper documentation and safe removal protect patient care.
That is successful troubleshooting.