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DEFROST CIRCUIT
The defrost circuit has a series of components that allows the disintegration of the frost formed during the cooling
cycle: control board, defrost sensor, relay number 2 in the board, output port in the board, defrost thermostat, fuses and
resistance (heater).
FAN MOTORS
The cooling unit has two fan motors, one in the freezer compartment and another one in the condenser unit, which
operate at 127 volts AC.
The evaporator fan motor circulate the warmer air of the fresh food compartment through the evaporator and sends
cold air to the freezer and fresh food compartments.
The condenser fan motor works as an auxiliary dissipator of the heat generated by the condenser due to the cooling
vapor that circulates through the line.
When the board processor has accumulated an amount of
compressor operating time and the sensor records a high
resistance value above 8.5 k., the board sends a 12 V. DC
signal to the relay and the relay connects to the resistance in
order to generate heat and melt all the accumulated frost.
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