On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Troubleshooting Fowler Calib. Err, indicating incomplete Fowler calibration that may prevent reliable head-section position indication or related bed operation.
Step-by-Step Troubleshooting
1. Ensure Patient Safety First
- Remove the bed from patient use if the Fowler/head-section position cannot be trusted, does not move normally, or is needed for patient positioning.
- Transfer the patient to a known-working bed before troubleshooting when clinically necessary.
- Never troubleshoot Fowler calibration concerns while an active patient depends on the bed for safe positioning.
Expected outcome: The patient is not dependent on a bed with unresolved Fowler position-sensing or calibration concerns.
Why it matters: Unreliable Fowler position feedback can affect safe positioning and confidence in bed operation.
2. Verify the Reported Error and Behavior
- With the bed safely available for inspection, confirm that Fowler Calib. Err appears in the lower status screen during normal mode.
- Operate the Fowler/head-section function through a limited safe range and observe whether the head section moves normally.
- Determine whether the message remains displayed or whether movement is intermittent, limited, noisy, or abnormal.
- Document any additional error messages or abnormal bed behavior.
Expected outcome: The message is clearly observed and any associated Fowler behavior is documented.
Why it matters: This confirms an active calibration-related condition rather than a reported issue that is no longer present.
3. Check Power and Basic Bed Condition
- Confirm the bed is connected to an appropriate AC power source and that power-related indicators appear normal.
- Inspect the bed for visible damage, contamination, fluid intrusion, or mechanical obstruction around the Fowler/head-section movement path.
- Check that linens, mattress components, accessories, cables, and attached equipment are not interfering with Fowler movement.
Expected outcome: The bed has stable power and no external obstruction or visible condition preventing normal Fowler movement or calibration.
Why it matters: Calibration may fail or remain incomplete when movement is restricted or the bed is not operating under normal conditions.
4. Inspect the Fowler Position-Sensing Path
- Visually inspect accessible portions of the Fowler position-sensing path, including the Fowler potentiometer area, linkage, wiring, and connectors.
- Look for loose or disconnected connectors.
- Look for pinched, damaged, or strained wiring.
- Look for broken, bent, loose, or disengaged linkage components.
- Check for evidence of impact, contamination, or abnormal movement.
- Do not perform unnecessary internal disassembly during initial evaluation.
Expected outcome: The Fowler potentiometer and associated accessible connections appear intact, properly connected, and mechanically engaged.
Why it matters: The bed cannot complete or retain accurate Fowler calibration if position feedback is missing or mechanically inaccurate.
5. Verify Fowler Movement Before Calibration
- Using the bed controls, verify that the Fowler/head section moves smoothly without binding, unexpected stopping, unusual noise, or erratic operation.
- Stop testing if the head section binds, moves unpredictably, or creates a safety concern.
Expected outcome: Fowler movement is mechanically smooth and suitable for calibration testing.
Why it matters: Calibration should not be attempted repeatedly when a mechanical or electrical movement problem may be present.
6. Complete the Fowler Calibration Procedure
- Perform the applicable Fowler calibration procedure according to approved service documentation for the Stryker S3.
- After calibration, return the bed to normal operating mode and verify whether Fowler Calib. Err is no longer displayed.
Expected outcome: Fowler calibration completes successfully and the error message clears.
Why it matters: This message specifically indicates that Fowler calibration has not been completed.
7. Verify Normal Operation After Calibration
- Function-test the Fowler/head-section movement through its intended operating range after the message clears.
- Confirm smooth Fowler movement and accurate, repeatable operation.
- Confirm there is no recurrence of Fowler Calib. Err.
- Confirm there are no additional bed errors or abnormal behaviors.
Expected outcome: Fowler function operates normally without the calibration error returning.
Resolved: If calibration completes, the message clears, and Fowler operation is normal, document the repair and return the bed to service according to facility procedure.
If the Problem Persists
If Fowler Calib. Err remains displayed or calibration cannot be completed after external checks and inspection of accessible connections, external obstruction, basic power concerns, and readily visible connection issues have been ruled out.
The condition may involve the Fowler potentiometer, sensing linkage, wiring, connector integrity, or associated bed electronics.
Remove the bed from service, label it Out of Service, and send it for repair or bench evaluation.
Do not return the bed to clinical use with unresolved Fowler calibration or unreliable head-section position feedback.
Knowing when to stop is proper troubleshooting.
Clinical Use Tip
Never troubleshoot on an active patient. Move the patient to a backup bed first before testing when Fowler positioning reliability is uncertain.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Stryker S3 hospital bed displayed Fowler Calib. Err in the lower status screen during normal mode, indicating Fowler calibration had not been completed."
Cause
What was observed during troubleshooting.
Example:
"Inspection found the Fowler position-sensing path required evaluation for calibration completion. Accessible Fowler potentiometer wiring and linkage were inspected for loose connections, damage, or mechanical disengagement."
Resolution
What action was taken.
Example:
"Verified Fowler movement was unobstructed, completed Fowler calibration per approved service procedure, confirmed the message cleared, and function-tested Fowler operation without recurrence. Bed returned to service."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
A Fowler calibration message should be treated as a position-sensing reliability concern until verified and corrected. Start with patient safety, confirm the message, rule out external interference and accessible connection issues, complete calibration when appropriate, and escalate when the error persists. Clear CCR documentation supports safe device disposition and future service decisions.
That is successful troubleshooting.