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What This Guide Helps With
This guide assists Clinical Engineering in troubleshooting temperature control or sensor calibration errors on the GE Panda Warmer. Symptoms may include inaccurate temperature readings, unstable setpoint temperatures, uneven warming across the mattress or radiant panel, or alarms indicating sensor faults. The focus is on external and verifiable checks before assuming internal failure.
Step-by-Step Troubleshooting
Verify Power Source
- Ensure the warmer is plugged into a verified working outlet.
- Check for tripped breakers or surge protectors.
- Why: Power fluctuations can cause sensors and control circuits to give inaccurate readings.
Inspect Display and Control Panel
- Confirm the control panel is responsive.
- Check for error codes related to temperature or sensor faults.
- Why: Display issues can mimic sensor calibration errors.
Check Temperature Setpoint
- Verify the set temperature matches clinical requirements.
- Cycle through preset modes to ensure proper response.
- Why: Incorrect setpoints may appear as sensor or control errors.
Verify Mattress or Radiant Sensor Placement
- Ensure mattress probe is seated correctly.
- Inspect radiant panel sensor for secure attachment and no visible damage.
- Why: Misaligned or disconnected sensors will cause calibration faults.
Inspect for Physical Damage or Contamination
- Check sensors, cables, and connectors for cracks, kinks, or liquid exposure.
- Clean any debris from sensor surfaces.
- Why: Contamination or mechanical damage can alter temperature readings.
Swap Cables or Sensors if Spares Are Available
- Use a known-good sensor and cable to see if the error clears.
- Why: This isolates whether the fault is in the sensor or main electronics.
Cycle Power and Observe Behavior
- Power the unit off for 1–2 minutes, then restart.
- Monitor for persistent calibration errors.
- Why: Some errors may be cleared after a full system reset.
If the Problem Persists
All external checks have been completed. Internal electronics or sensor calibration likely require factory service.
- Remove the warmer from service.
- Label as Out of Service.
- Send to GE Healthcare-authorized repair or bench evaluation.
Knowing when to stop and escalate is proper troubleshooting.
Clinical Use Tip
- Do not attempt troubleshooting on an active patient.
- Move the infant to another verified warmer first.
- Only perform checks when patient safety is ensured.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
“Warmer temperature unstable and sensor calibration error displayed on panel.”
Cause
What was observed during troubleshooting.
Example:
“Mattress temperature probe loose and display showed inconsistent readings. External inspection found no visible damage.”
Resolution
What action was taken.
Example:
“Re-seated the mattress probe and cycled power; error persisted. Warmer removed from service and sent for GE Healthcare service.”
Helpful Details to Include
- Outlet tested: Yes/No
- Sensor connections inspected: Yes/No
- Alarm codes observed: List codes if present
- Unusual readings: Document temperature fluctuations
- Final device status: Out of service / Returned to service
Final Thought
Patient safety is the top priority. Logical, stepwise troubleshooting avoids unnecessary risks and ensures devices are only used when verified safe. Documenting every step provides accountability and supports future preventative maintenance. Escalation to authorized service is a key part of proper Clinical Engineering practice.
That is successful troubleshooting.