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5-9. Door S/W Sensing Circuit
5. Circuit Descriptions
1) The terminals, ② and ⑥ of the connector (CN30) are grounded, and DC5V (Vcc) is
supplied to the terminals, ⑤ and ⑥ through the resistors, R404 and R403 for the freezer
and the refrigerator door, respectively.
2) The micro-processor senses the door’s open and close based on engaged voltages,
“Low(0V)” and “High(5V),” respectively.
The door switch always should be checked when the evaporator fan is not
running while the door is closed.
Note
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