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Refrigeration And Freezer Compartment Theory Of Operation - Viking VCSB483D Service Notebook

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Refrigeration and Freezer Compartment Theory of Operation

To avoid electrical shock which can cause severe personal injury or death, disconnect power
to refrigerator using power switch before servicing. Wires removed during disassembly must
be replaced on proper terminals to insure correct earth ground and polarization. After
servicing, reconnect power using power switch.
If both freezer and fresh food thermistors are
warm,
their
resistance
Refrigerator
and
Temperature Control Section) and the electronic
signals for compressor / condenser fan motor
operation and for operation of fresh food fan. (See
previous section on Freezer and Refrigeration
Compartment Theory of Operation for adapter
board control.)
After freezer thermistor cools sufficiently to raise
resistance and block the signal to the
WARNING
drops
(see
table
Freezer
Thermistor
compressor / condenser fan motor will shut off.
in
However, fresh food fan will continue to run
until fresh food thermistor cools and signal is
blocked to electronic control.
If fresh food thermistor cools before freezer
thermistor, electronic control will interrupt
circuit to fresh food fan while evaporator fan
motor will continue to operate under control
of freezer-thermistor.
34
electronic
control,

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