Keedian operations · Standard procedure

Controller fault code.

A unit's controller raises a fault code without necessarily taking the unit fully out of service — a drive fault, a safety-circuit fault, a leveling or brake fault. Captured, severity-classified against the agreed fault map, and routed to the maintenance provider before it becomes a stoppage.

01 Detail

Trigger, action plan, and escalation criteria.

optimization_metric vertical_transport medium essential tier AI: hybrid

Related metric: vertical_transport_availability
Trigger: controller_fault_code raised AND fault_map[code].severity >= dispatch_threshold
Value drivers: Operational continuity Avoided truck rolls
Preconditions: The controller fault register is exposed over the OEM monitoring interface or mapped to points, and a fault map that classifies codes by severity has been agreed with the provider per equipment make / model.
Human role: Primary — Keedian reads the controller fault register and raises the alarm; diagnosis and repair are the certified maintenance provider's. Operators classify the fault against the agreed map and coordinate the referral.
Action plan: (1) Capture the fault code and classify it against the agreed fault map — safety-circuit and brake faults are treated as high; informational codes are logged and trended, not dispatched. (2) Attribute the fault to the specific unit and include the code and its meaning in the referral. (3) Refer a dispatchable fault to the maintenance provider with a recommended action; log-and-trend the informational ones for the monthly review.
Escalation: (1) A safety-related fault code (safety circuit, brake, overspeed) → refer out of cycle; do not wait for the routine report. (2) A fault code recurs on the same unit → flag it for a deeper provider engagement rather than repeated one-off referrals.
Prevention: (1) Agree the fault map (code -> severity -> action) with the provider per make / model at onboarding so classification is consistent. (2) Trend fault frequency per unit so a developing fault surfaces before it strands the car.