AMS SENSIT II - User Manual

Questions and Answers

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curtiskellyNov 22, 2025
How to troubleshoot no power at the control board of my AMS SENSIT II Vending machines?
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  Brooke McbrideNov 23, 2025
  If there is no power at the control board of your AMS Vending machine, consider the following potential causes: 1. There is no power from the power cord. Check the power cord, outlet, and supply. 2. The 3.0 amp fuse is blown. Replace the 3.0 amp fuse. 3. The fuse harness is not connected to the back of the fuse holder. Connect the fuse holder harness. 4. The power harness is disconnected. Reconnect the power harness. 5. There is a short or cut in the power harness between the transformer and the control board. Check continuity through the power harness, and if there is no continuity, replace the power harness. 6. The transformer does not have power at the 24 VAC secondary side. Ensure the primary side of the transformer is receiving power. If there is no 24 VAC on the secondary side...
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Kristin ThompsonAug 25, 2025
What to do if the validator will not accept bills on my AMS Vending machine?
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  Matthew ShafferAug 26, 2025
  If the bill validator on your AMS Vending machine isn't accepting bills, it could be due to a few reasons: * The changer might be unplugged; plug it in. * There might not be enough change in the changer; add coins. * The validator itself might be unplugged; plug it in.
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Rachel SmithAug 27, 2025
Why is my AMS Vending machine not paying out coins?
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  michaelwoodAug 27, 2025
  If your AMS Vending machine won't pay out coins, consider these possibilities: * The changer could be unplugged; plug it in. * The changer might be defective; replace it. * Coins could be jammed; clear them. * There might be no coins in the changer; add coins.
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Katelyn RobinsonAug 27, 2025
How to fix the 'Out of Service' message on an AMS Vending machine?
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  rwallaceAug 27, 2025
  To restore your AMS Vending machine after an 'OUT OF SERVICE MESSAGE', press the mode switch on the control board to display any errors. Refer to the error codes list, correct the cause of the error, and press “0” to clear the error code. If the error was generated by an MDB device, press 1 for more detailed error codes.
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Allison ParkerAug 29, 2025
What does 'Please Make Another Selection' mean on my AMS Vending machine?
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  Lisa MartinezAug 29, 2025
  If your AMS Vending machine displays “Please Make Another Selection”, it could be due to: * The selection not being configured in the motor matrix; reconfigure the motors. * A jammed motor; clear the jammed motor and clear the error code. * The vend not being sensed by the sensor; clear the fault in the sensor boards or harness, or there may be a control board error.
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deborah86Sep 18, 2025
How to fix a jammed coin tube in my AMS Vending machine?
- S
  Sara ClarkSep 18, 2025
  If your AMS Vending machine displays 'JAMMED TUBE', clear any obstructions from the coin tube.
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Mrs. Sandra KnoxSep 15, 2025
How to troubleshoot communications error for changer on my AMS Vending machine?
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  Caroline NormanSep 15, 2025
  If your AMS Vending machine displays a communications error for the changer, check the MDB harness connections.
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Amber WangSep 16, 2025
What to do if my AMS Vending machine displays 'Chute – No coins accepted'?
- J
  John PhillipsSep 16, 2025
  If your AMS Vending machine is not accepting coins for a period of time and displays 'CHUTE', clear any obstructions from the coin chute.
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Brandon MartinSep 7, 2025
How to fix a blocked or disconnected product sensor in my AMS Vending machine?
- J
  James ScottSep 7, 2025
  If the product sensor in your AMS Vending machine is blocked or disconnected, remove any products or other objects in the bottom, or in sensor openings in ends, of the delivery bin. Also, check the sensor harness connections.
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alvaradotiffanySep 4, 2025
What does 'Open Box' mean on my AMS Vending machine and how to fix it?
- M
  Melissa GriffinSep 4, 2025
  If your AMS Vending machine displays 'OPEN BOX', close the bill box.

Summary

Introduction to AMS Sensit II Frozen Food Vendor

Sensit II System Overview

Overview of the Sensit II system's patented vend-sensing technology and its benefits.

Health and Safety in Food Vending

Details NAMA requirements and AMS specifications for safe food vending.

General Vendor Specifications

Covers operating environment, dimensions, weight, power, and refrigerant specs.

Safety Guidelines for AMS Vendors

Commitment to Safety

States AMS's commitment to safety and basic guidelines for service personnel.

Safety Precautions

Lists essential safety precautions for high voltage, grounding, fans, helixes, and refrigerant.

Test Standards and Compliance

Outlines test standards and certifications the vending machines comply with.

Vendor Systems and Components

Sensit II System Operation

Explains the operation of the Sensit II system, including sensors and product detection.

Control Board and Sensors

Details the control board, program chip, sensors, and their functions.

Door and Refrigeration Components

Covers door components, refrigeration operation, and temperature control.

Electrical and Tray Components

Details tray components, electrical panel, fuse, power switch, and sliding door.

Vendor Preparation and Installation

Power and Outlet Check

Verifies power availability, outlet conditions, and electrical requirements for safe setup.

Vendor Preparation Procedures

Covers inspection, mounting accessories, product loading, and setting prices.

On-Site Installation Steps

Details placing, leveling, and securing the vendor for operation.

Tray Adjustment and Configuration

Tray and Column Configuration

Instructions for removing, installing, and adjusting trays and columns.

Helix and Motor Configuration

Details changing helixes, adapters, ejectors, alignment devices, and motor positions.

Product Loading and Pusher Bars

Tips for preventing hang-ups, vending tall products, and installing pusher bars.

Service Programming and Settings

Error Codes and Data Logs

Procedures for viewing errors, accounting data, and system logs.

Temperature and Price Settings

Setting refrigeration temperature and product prices for operation.

Vendor Configuration and Options

Configuring trays, MDB settings, options, sales blocking, clock, and free vend.

Program Quick Reference

A quick reference for accessing service mode and its various functions.

Troubleshooting Vendor Issues

Out of Service and Health Errors

Addresses "OUT OF SERVICE" messages and specific Health and Safety related errors.

Machine Error Codes and Solutions

Provides comprehensive lists of error codes, their causes, and corrective actions.

Jammed Motors and Ice Formation

Procedures for clearing jammed motors and resolving ice formation issues.

Machine Troubleshooting Chart

A chart for diagnosing and resolving common electrical and mechanical failures.

Vendor Maintenance Procedures

Chip Replacement and Cleaning

Instructions for replacing the program chip and cleaning major components.

Minor Maintenance and Defrost

Covers lubrication, bulb replacement, and evaporator coil defrosting.

Temperature System Testing

Procedure for testing the Health and Safety temperature monitoring system.

PC Utility Loading Instructions

Steps for loading, configuring, and downloading vendor software via PC.

Wiring Diagram

Typical Wiring Diagram

Wiring diagrams showing connections for various components of the vendor.

Supported DEX Fields

Supported DEX Fields List

Lists the supported Data Exchange (DEX) fields for reporting sales and machine data.

Optional Equipment

Optional Equipment Details

Details optional equipment like candy pushers, helix splitters, and cup rails.

Limited Warranty Information

Limited Warranty Terms

Outlines the warranty period and conditions for the vending equipment.

AMS SENSIT II Specifications

General

Model	SENSIT II
Category	Vending Machines
Manufacturer	AMS
Bill Capacity	Varies depending on bill acceptor model
Compatibility	MDB (Multi-Drop Bus)
Interface	MDB (Multi-Drop Bus)
Dimensions	Varies by configuration
Weight	Varies by configuration