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2. Motors driving circuit (freezing compartment fan)
1. The circuit makes the Motor Fan OFF by cutting Off the power supplied to driver inside the Fan Motor when the is necessary.
2. This is a circuit to perform a temporary change of speed for the fan motor and applies DC voltage up to 7.5V ~ 16V to motor .
3. This circuit prevents over-driving the fan motor by cutting off power applied to the fan motor in the lock of fan motor by
sensing the operation RPM of the fan motor.
part part
MOTOR OFF 2V or less 0V
MOTOR ON 13V~15V 0V
a b
3. Cooling motor driving circuit (machine room)
1. This circuit makes standby power 0 by cutting off power supplied to Iss inside of the fan motor in the fan motor OFF.
2. This circuit prevents over-driving the fan motor by cutting off power applied to the fan motor in the lock of fan motor by
sensing the operation RPM of the fan motor.
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