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1-4. Load/dispenser operation, door opening circuit
1. LOAD DRIVING CIRCUIT
✽ The fan operates at the regular speed even if the door of the refrigerator or freezer is opened. When the doors are closed,
the fan reverts to its original speed.
✽ (A), (B), (C), and (D) of door switch for the freezer or refrigerator are connected to the door open sensing circuit in parallel
toward both ends of switch to determine door open at MICOM.
✽ In the TEST mode, the fan will stop if any door is opened. It will resume operation when the door is closed.
(1) GR-P227/L227/P257/L257
EXPLATION FOR MICOM CIRCUIT
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Measuring part (IC6) IC6-16 IC6-13 IC6-12 IC6-15 IC6-14
Status
ON Within 1 V
OFF 12 V
Type of Load Compressor
Defrost
Heater
AC Converting
Relay
Refrigerator
LAMP
Dispenser
Heater