Sensor Input Voltage Low CCB3

The microprocessor detected sensor input voltage below the threshold on the CCB3 board.

Possible causes

Short circuit in Compartment 3 sensors
Excessive moisture in the C3 control box
Low voltage output from the main microprocessor

Recommended actions

Check sensor wiring in evaporator 3
Clean and dry the CCB3 board
Measure regulator output voltage
Replace defective sensor or board

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