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Asset Type
Sequential Compression Device (SCD)
Manufacturer
Model
What This Guide Helps With
Error E9 Temperature Error causing device shutdown or no therapy due to internal temperature being too high or too low.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Remove the device from active patient use if compression therapy has stopped
- Apply an alternate SCD unit if needed
- Ensure patient continues receiving DVT prophylaxis
Verify the Reported Error and Behavior
- Power on the unit and confirm Error: E9 Temperature Error is displayed
- Observe when the error occurs (startup vs during operation)
- Check if the device feels unusually hot or cold
- Confirm whether therapy has stopped
Check for Overheating Conditions
- Ensure the unit is not covered by blankets, bedding, or linens
- Verify the fan intake/exhaust near the power cord is not blocked
- Allow proper airflow around the device
Inspect Fan Vent and Physical Condition
- Check for dust or debris blocking the fan vent
- Ensure all ventilation openings are clear
- Listen for fan operation during startup
Evaluate Environmental Temperature
- Confirm the device is being used in a normal room temperature environment
- Avoid placing near heaters, vents, or direct sunlight
Check for Low Temperature Condition
- If the unit feels cold, allow it to warm to room temperature
- Wait 30–60 minutes before powering on
Perform Manual Reset
- Power cycle the device after correcting environmental conditions
- Confirm whether the error clears on restart
If the Problem Persists
If the E9 Temperature Error continues after airflow, environment, and reset checks:
- External causes have been ruled out
- Likely internal issue such as faulty temperature sensor, fan failure, or control board issue
- Remove device from service
- Label as Out of Service
- Send for repair or bench evaluation
Clinical Use Tip
Never troubleshoot temperature-related errors 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:
"Unit displaying E9 Temperature Error and not providing compression therapy."
Cause
What was observed during troubleshooting.
Example:
"Vent blocked by bedding causing overheating condition."
Resolution
What action was taken.
Example:
"Cleared obstruction, allowed unit to cool, performed power cycle, verified normal operation."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Temperature errors are protective safeguards. Always check airflow and environment first, and escalate to service if the condition persists.
That is successful troubleshooting.