Komatsu PC88MR-10 Shop Manual page 1364

Hydraulic excavator

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Testing with self-diagnosis function

3. Press [F3] twice on the Service Menu screen to select 03 "Abnormality Record".

4. Validate the selection by pressing [F6].

5. Press [F3] once on the Failure Record screen to select 02 "Electrical System Abnormality Record".

6. Validate the selection by pressing [F6].

a For details, see the failure code list related to air conditioner.

Failure code

Failure (Displayed on screen)

Air Conditioner Inner Sensor Open

Air Conditioner Inner Sensor Short

Air Conditioner Outer Sensor Open

Air Conditioner Outer Sensor Short

Ventilating Sensor Open Circuit

Ventilating Sensor Short Circuit

Sunlight Sensor Open or Short

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