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Rocky Mountain Vending

Delivery Sensor Diagnosis — Remove Product Stuck

AMS Sensit II Glass Front Vendor

SnackMedium confidenceExact parts not verified
Back to all issues

Delivery Sensor Diagnosis — Remove Product Stuck

Diagnose why the machine persistently shows a remove-product message or fails to detect product delivery

High VoltageOperator5-10 min
Delivery sensor3 stepsoperator-intermediate

Qualified technician handoff: stop before live electrical testing, sealed-system refrigeration work, compressor service, or protected-compartment access unless a qualified technician is handling the work.

  • Sensor message stuck after all cleaning and harness checks: Sensor likely failed — replace sensor assembly.

Checklist

Guided Diagnostic Steps

Work from low-risk checks toward technician-level inspection only when evidence supports it.

Printable checklist

You can read or print the route now. The first checkbox click opens the service contact gate.

lead gated
  1. 1

    Clear delivery bin and clean sensor

    operator-intermediatelow

    Remove all items and debris from the delivery bin. Gently clean the sensor surfaces with a soft dry cloth.

    Stop conditions
    • sensor-broken-loose-from-mounting
    • liquid-spill-in-bin

    Expected: Bin is completely empty and sensor surfaces are clean

    Evidence to note: photo

  2. 2

    Test sensor response after clearing

    operator-intermediatelow

    Cycle power to the machine or attempt a test vend from service mode. Observe whether the Remove Product message clears. If it clears, place an item in the bin and see if the message returns correctly.

    Expected: Message clears when bin is empty and returns when product is placed in bin

    Evidence to note: note

  3. 3

    Check sensor harness connection

    operator-intermediatehigh

    Power off the machine. Trace the sensor harness to its connector at the control board. Verify the connector is fully seated with no bent or corroded pins.

    Stop conditions
    • corroded-or-melted-connector

    Expected: Harness connector is secure and pins are clean and straight

    Evidence to note: photo

Tools for this route

No special tools listed

Location Help

Where to find this

Use this as orientation before touching the machine. It is location help, not a repair instruction.

Delivery Sensor and Bin

Start at the customer delivery bin and product drop path; clear visible product and debris before moving to internal checks.

  • Detects whether product has fallen into the delivery bin and blocks subsequent vends until product is removed
  • product-sensor-assembly
  • delivery-bin
  • sensor-harness

Do not open energized or protected electrical areas unless a qualified technician or licensed electrician is handling the work.

cabinet glass frontwiring harnessvend motordelivery bin

Parts status

Exact public parts list not verified yet. Use this route to identify the system before ordering.

Candidate areas for part verification

Delivery sensor componentsControl Boards and Program ChipsVend MotorsTemperature and Product SensorsInterior Lighting ComponentsHelix Coils and Tray Assemblies

Other Possible Issues

Switch routes if this symptom is not the closest match.

All issues
CoolingCompressor Will Not Run — Refrigeration FaultPowerNo Power to Machine — Internal DiagnosisVend pathSingle Column Vend FailureControllerController or electronics problemDoor / lockDoor, latch, or lock problem