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Whirlpool 7S21FNI SL サービスマニュアル

Section III: Control System

Schematic Diagram
1. The Compressor:
Compressor downtime must be greater than 5 minutes to open again. It is parked at an open cycle, once the freezer
reaches the required temperature, only then will the compressor stop again.
2. Condenser Fan Motor:
When the ambient temperature is below 10 ℃, condenser fan is turned on ten minutes after the compressor is turned on.
When the ambient temperature is higher than 10 ℃, condenser fan and compressor are simultaneously turned on.
3. Evaporator Fan Motor:
Evaporator fan is turned on after the freezer door is closed.
4. Freezer & Ref LED Lamps:
The freezer & ref lamps turn off when the freezer door is closed, and turned on when the freezer door is opened.
5. Heater and Air Damper:
During cooling/refrigeration mode, air damper is opened.
During defrost mode, air damper is closed and heater is turned on.
Air Damper only changes its state when freezer door is closed.