AMS 39-VRM, Operation And Service Manual

L0086, Rev. D 

AMS SENSIT II GLASS FRONT VRM VENDOR

7-2 

7.2.3 Error Code Causes and Solutions 

- Continued

ERROR CODES – CAUSES AND SOLUTIONS

Top Level 

Error Code 

Sub Level 

Code 

Causes Solutions 

A message has been generated by the card reader.Press 

1

 to see sub-level error codes. 

CARD ERROR –. 

Card error 

Use a different card. 

INVALID CARD –  

Invalid card 

Use a different card 

TAMPER 

Tamper error. 

Consult card reader manual or manufacture 

COMMUNICATIONS 4  Communications error. 

Check MDB harness connections 

SERVICE 

Unit needs service. 

Consult card reader manual or manufacturer. 

READ ERROR 

Reader failure. 

Consult card reader manual or manufacturer. 

COMMUNICATIONS 9  Communications error 

Check MDB harness connections. 

CARD 

READER 

JAMMED CARD 

Card is jammed. 

Clear the jammed card from the card reader. 

PROD. 

SENSOR 

NONE 

The product sensor is 
blocked or disconnected. 

Remove any products or other objects in the bottom, or in 
sensor openings in ends, of the delivery bin.  Check sensor 
harness connections. 

SENSIT 

BLOCKED 

NONE 

The vend sensor is 
blocked or lens is fogged.

Remove any obstructions from the path of the sensor. 

SENSIT 

DISCONN’D 

NONE 

The vend sensor is 
disconnected. 

Check sensor harness connections. 

 
 
7.3 CLEARING JAMMED MOTOR

If one or more motors and helixes become jammed, 

the motor(s) will be displayed as a sublevel error under 
“Motor Jammed”.  

Energized vend motors can turn a helix with 

considerable torque, creating a possible entrapment 
hazard. Disconnect power to the vendor or control board 
before freeing a jammed helix or motor. Always restrain or 
block the helix before freeing a jammed or caught product. 

CAUTION

:  

Use caution when freeing jammed product! 

Refer to 

2.2.4 Helix Motion and Jamming!

Clear any jammed products from the indicated vend 

columns. 

To reset the error, first enter service mode (refer to 

Section 6.0), then select Tray Setup (refer to Section 6.7.1). 
Press “1”, then “ * “, then “3”.  The control will attempt to run 
the jammed motors. If the motor had been taken out of the 
motor matrix, it will be re-established in the matrix.  

 
7.4 WATER ACCUMULATION IN THE CABINET 

Water accumulating in the cabinet is usually caused by 

one of two things: condensation of moist air or rain water 
leaking into the cabinet.  Excessive condensation indicates 
an air leak which allows moist outside air to continually 
enter the cabinet and condense on the evaporator. 

To minimize condensation on the evaporator: 

1.  

Make sure the refrigeration unit cover gasket is sealing 
properly all the way around. In particular, check the 
openings where the refrigeration lines and drain tube 
pass through the cover. These openings should be 
sealed completely around the lines and tube with duct 
putty. 

2.  

Make sure the cabinet door is properly tightened when 
it is closed so that it makes contact with the gasket on 
all sides.

3.  

Make sure there are no objects preventing the vend 
door from closing. The vend door must open and close 
freely and close completely. 
 
Rain water can enter the cabinet through the rear 

ventilation opening. Rain entering through this opening is 
not considered hazardous since all components of the 
refrigeration unit are sealed. Water will drain out through 
the ventilation opening in the bottom of the cabinet. Check 
to make sure the refrigeration unit cover gasket is seating 
properly if excess water is noticed in the front of the 
cabinet. 
 

Some water accumulation on the inside bottom area of 

the cabinet door is expected and should drain out on its 
own. Check to make sure the rain guards on the top of the 
door and cabinet are present and functioning properly to 
minimize water coming in around the door gasket