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1-7. Temperature sensing circuit
(1) GR-P227/L227/P257/L257
The circuits involving the freezer and refrigerator sensors control the temperature in both the freezer and the refrigerator.
The icemaker sensor detects when ice is made. The defrost sensor determines both the need for defrosting and the
efficiency of the defrost operation. See the table below for voltages and checkpoints.
EXPLATION FOR MICOM CIRCUIT
- 31 -
SENSOR CHECK POINT
NORMAL(-22 °F ~ 122 °F) IN
SHORT IN OPEN
Freezing sensor POINT A Voltage
Defrost sensor POINT B Voltage
Refrigerator sensor 1 POINT C Voltage 0.5 V~4.5 V 0 V 5 V
Refrigerator sensor 2 POINT D Voltage
Magic room/ Opti Fresh Sensor POINT E Voltage