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7-2-2 Load / Buzzer Drive & Open Door Detection Circuit
1. Load Drive Condition Check
To measure outputs of the control board, check voltages between the pins for the following components:
NOTE: When the door of the freezer/refrigerator is left open for 7 minutes or longer, the lamp of the freezer/refrigerator turns
off automatically.
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Circuit Pin Number Pin Number Output Voltage
Compressor Con1 pin1 Con4 pin1 115 VAC
Condenser fan Con1 pin1 Con4 pin1 115 VAC
Evaporator fan Con1 pin1 Con4 pin1 115 VAC
Defrost heater Con1 pin3 Con4 pin1 115 VAC
F,R-lamp Con1 pin5 Con4 pin1 115 VAC