HITACHI Zaxis Excavator Fault Codes DTC

Hitachi Excavator Fault Codes DTC list

Number   Error Code   Description

1

F6 Differential pressure

F7 Pump delivery pressure

F8 Pump displacement angle

F9 Pump displacement angle control signal

F10 Hidraulic oil temperature

2

F6 Approx.pimp flow rate( pump angle X rpm)

F7 Approx. Pump displacement torque ( pimp angle X rpm)

F8 Potential pump displacement torque

F9

F10

3

F6 Set engine speed

F7 Actual engine speed

F8 Actual/Set engine speed difference

F9 E.C angle

F10

4

F6 Boom valve control pressure

F7 Arm valve control pressure

F8 Bucket valve control pressure

F9 Swing valve control pressure

F10 Travel valve control pressure

5

F6 Power selector switch

F7 Auto idle switch

F8 Warming up switch

F9 Work mode selector switch

F10 Travel mode switch

6

F6 Power boost switch

F7 P switch

F8 Key switch

F9

F10

7

F6 Control signal pump displacement solenoid valve

F7 Chargeover pressure of travel motor

F8 Chargeover pressure of power boost

F9 Control signal to Swing brake

F10 Control signal to Swing dampener valve

8

F6 E.C motor position

F7 Control signal to ECM motor

F8 Control signal to ECM relay

F9 Control signal ro ECM Swing brake

F10 Control signal to ECM dampener valve

9

F6 TP pressure

F7 Travel direction switch

F8 Working brake switch

F9 Tire compensation switch

F10

10

F6 Wheel mode control switch

F7

F8

F9

F10