E02 : If this code is displayed, stop the machine and run the engine under no load at a mid-range speed. OPERATION If an action code is still displayed after taking the necessary action, check the failure code and contact your Komatsu distributor for repairs. Remark The top line of the character display displays “E02” and the bottom line displays the condition of the machine related to overheating. E01 : If there is any problem on the machine, such as a drop in the engine coolant level, the location for maintenance is displayed.
If the maintenance caution lamp illuminates at the same time, inspect and perform maintenance of the item indicated after completion of the day’s work or when changing shifts. If “E01” and “MAINTENANCE” are displayed, check the failure code and ask for repairs to be carried out. Remark “E01” is displayed on the top line of the character display and “MAINTENANCE” or the part of the machine requiring inspection, filling of fluid, or replacement is displayed on the bottom line. Failure Code Display If an action code is displayed on the character display, check the failure code according to the failure code display method described below.
When contacting your Komatsu distributor to request repairs, inform your distributor of the failure code. Method of Displaying Failure Code 1. If an action code is displayed on the character display of display portion (3), press the top (>) portion of machine monitor mode selector switch 2 (A). The screen changes from the action code to the failure code. The failure code is displayed with the first six digits on the left of the top line of the character display. The code displayed after the space on the right side of the failure code indicates the controller that detected the failure code. WA430-6 2-11