Hospital beds

Stryker FL28C: troubleshooting and error codes

The ServiceForge knowledge base holds 12 documented symptoms for the Stryker FL28C, with 13 ranked causes, 13 diagnostic checks with test points and expected values, and 6 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Auto Contour micro switch replacement

1st Auto Contour micro switch signals when knee gatch reaches preset angle; 2nd switch initiates knee gatch lowering when Fowler is lowered in Auto Contour mode.

Ranked causes

1. 1st Auto Contour micro switch requires replacement or adjustment (rare)
2. 2nd Auto Contour micro switch requires replacement (rare)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Angle sensor defective

Scale angle sensor malfunction indicated by error 16

Ranked causes

1. Angle sensor failure (unknown)

First check

Power cycle the bed

Test point: Bed power connector
Expected: Bed powers on normally without error 16

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Scale angle measurement

Scale requires calibration to accurately measure bed angles at 0°, +12° (Trendelenburg), and -12° (Reverse Trendelenburg) positions using angle meter verification.

Ranked causes

1. Scale calibration requires periodic verification and adjustment (common)

First check

Position bed at 0° angle

Test point: Mattress support seat section
Expected: 0° as measured by angle meter

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

CPR activation cable replacement patient safety

Cable assembly connecting CPR handle to activation levers enables emergency Fowler/knee gatch release; free play must not exceed 1/8".

Ranked causes

1. CPR activation cable worn or damaged (rare)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

CPR micro switch replacement (head section lever) patient safety

Micro switch on head section lever indicates state of Fowler actuator (engaged/disengaged) when CPR emergency release activated.

Ranked causes

1. CPR micro switch on head section lever requires replacement (rare)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

CPR micro switch replacement (head section structure) patient safety

Micro switch attached to head structure signals motor control board that Fowler actuator reset may begin and knee gatch lowering may commence.

Ranked causes

1. CPR micro switch on head structure requires replacement (rare)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

CPR pneumatic cylinder replacement patient safety

Pneumatic actuator cylinder lifts head section in CPR emergency mode; connects via clevis pin and nylon washers to head actuator tube.

Ranked causes

1. CPR pneumatic cylinder requires replacement or service (rare)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Foot left load cell out of range

Value from foot left load cell is out of range indicated by error 18

Ranked causes

1. Foot left load cell disconnected or faulty or scale board faulty (unknown)

First check

Visual inspection of cables

Test point: All cables from load cells to scale board
Expected: No stuck, disconnected or broken cables

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Foot right load cell out of range

Value from foot right load cell is out of range indicated by error 20

Ranked causes

1. Foot right load cell disconnected or faulty or scale board faulty (unknown)

First check

Visual inspection of cables

Test point: Load cell to scale board cables
Expected: No disconnected, stuck or broken cables

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Head left load cell out of range

Value from head left load cell is out of range indicated by error 21

Ranked causes

1. Head left load cell disconnected or faulty or scale board faulty (unknown)

First check

Visual inspection of cables

Test point: Load cell cables to scale board
Expected: All cables intact and properly connected

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Head right load cell out of range

Value from head right load cell is out of range indicated by error 19

Ranked causes

1. Head right load cell disconnected or faulty or scale board faulty (unknown)

First check

Visual inspection of cables

Test point: Cables from load cells to scale board
Expected: No stuck or broken cables

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Scale chip failure

Scale chip on scale board is faulty indicated by error 17

Ranked causes

1. Scale chip on scale board defective (unknown)

First check

Power cycle the bed

Test point: Bed power connector
Expected: Bed powers on without error 17

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Error codes

Code	Meaning	Trigger	Severity
`16`	Angle sensor defective	Scale angle sensor failure detected during operation	error
`17`	Scale chip failure	Scale chip on scale board is faulty	error
`18`	Foot left load cell out of range	Foot left load cell value exceeds normal operating range	error
`19`	Head right load cell out of range	Head right load cell value exceeds normal operating range	error
`20`	Foot right load cell out of range	Foot right load cell value exceeds normal operating range	error
`21`	Head left load cell out of range	Head left load cell value exceeds normal operating range	error

Likely causes and actions for each code are in ServiceForge. Connect ServiceForge to your AI

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.