SERVICE MANUAL FOR VT-12TEDS� VT-16TEDSW, VT-28TEDS-T

\ ���� Tools for repair� 1����Screw driver

2���� Multimeter

3��� Plier

4���� Electric Iron

������� Problems and troubleshooting� 1� ����� The wine cellar does not work (1). ���������������������������� Check to ensure the power plug is installed properly, if not connect or loosen, please connect it properly

(2).���������������������������� If there is no problem with the power plug, please unplug the machine and open the back cover.

��������������

Plug it in after open the back cover

���������������� Test the voltage at the connector of the power cord, (please take care of the high voltage) �. ���� AC100�120V ���������������� If the voltage is not within AC100�120V, that means the power cord is broken, please change the power cord.

����� Change the power cord

�. ��� AC100�120V ���������� a. ��� DC12�13V ��������������� If the voltage is within AC100�120V, then test the output voltage, if the voltage is not within DC12�13V, then it must be the problem of the PCB, change the PCB.

����� Change PCB

����� Cut the fastener

�������� NTC Here is for connecting the anti-frost NTC from the cooling system

����� Here is for connecting the heat fan

����� Here is for connecting the cold fan

���� Here is for connecting the temperature controller here

������ disconnect all the connectors

�������� Take out the screws on the PCB

����������� Melt the two wires from thermoelectric module on the cooling system

b. ������� DC1.9�13V ������� LED ���� Test the voltage with Multimeter, if voltage is DC1.9�13V, but the temperature LED no display,

����������� Test the input connect on the PCB for the temperature controller

��� DC �������������� If there is no DC voltage, it means the PCB is broken, change a new one. �� DC7.6�8.1V ��������� If there is a voltage within DC7.6�8.1V, then test the temperature controller ������� Pull out the magnetic seal

������ Take out the three screws

����� Take out the temperature controller

��������� Check whether the connectors are loosen

�������� DC7.6�8.1V �� Test the voltage on the connector ����������� If the voltage is not within DC7.6�8.1V, that means the wire is broken, change it. ������������� If the voltage is within DC7.6�8.1V, that means the temperature control is broken, change it.

������� Take out the screws

��� LED ��� ����� Here is for the interior LED light wires, and temperature control wires

� � � � � 8V Temperature controller power wires �8V � � � � � Temperature controller power wires �

�� NTC �� NTC Wires for sensors

����� Change a new temperature control PCB

2.���������� The inside temperature is not low enough ����������������Check whether the temperature setting is the one you want ������� Check whether the door is opened too often. ��������� Check whether the door is well closed ��������� Check whether the magnetic seal on the door frame is in good condition ���������������� Check whether there is too much dust on the anti-dust net, �����������������Check whether the ventilation on the two sides are hided.

����������� Check whether the cold fan is working well

������������ If it is not working, check whether the connectors are loosen. ��������������, If the connectors are good, then change the cold fan

������������ Check whether the hear fan(s) are working well ������������� If it is not working, check whether the connectors are loosen

�������������� If the connectors are not loosen, then change new the fan(s)

����������������If both of the cold fan and hear fan(s) are working well ���������� DC9�13V�then test the output voltage, check whether it is within DC9�13V ����������If it is not, change the temperature controller

�� DC9�13V �� If it is within DC9�13V, change the cooling system �������

3�������� Noise during operation ��������� Check whether the unit is placed evenly. ����������������������������� Check whether there is something in the heat fan(s), if yes, clean it.

������������� Check whether there is something in the cold fan, if yes, clean it.

������������������� If there is some ice on the cold aluminum, turn off the machine for some time

4���� LED ���� No display on the temperature controller ���� Check there is power ��������� Check whether there is input voltage

5���� LED ���� Display error on temperature LED display ������ NTC ������� Check whether the NTC connectors on the temperature controller is loosen ������ NTC ������ Check whether the wires from the NTC is broken.

5��������� Buttons on temperature controller does not function ������������Change the controller (see instruction in previous pages)

6������� Interior light does not work ������������� Check whether for the interior light on the temperature controller is in good condition.

������������� Check the wires for the light is well connected.

�����������������������������If the wires and connectors are in good condition, change the light PCB.