Section 5 • Fault CodesPart No. 227656GT GR™-20J • GR™-26J 5 - 7March 2022FAULT CODE CHARTError Source Error TypeID Name ID Name Condition Solution81 Descent valveThere is a problem on oneor other of the followingoutputs: terminal A30,terminal A26.Check the condition of thevalves and their connections.Otherwise, it is an internal faultof the controller.82 Rotation valveThere is a problem on oneor other of the followingoutputs: terminal A34,terminal A25.Check the condition of thevalves and their connections.Otherwise, it is an internal faultof the controller.83 Steering valveThere is a problem on oneor other of the followingoutputs: terminal A34,terminal A26.Check the condition of thevalves and their connections.Otherwise, it is an internal faultof the controller.84 Aux. ValveThere is a problem on oneor other of the followingoutputs: "FLASHINGLIGHT" and "TILT LAMP"Repair or replace the option.86 Brake coilopenThe main driver coil is notconnected to pin A12 ofNEB.Check the connections of theBRAKE coil. Otherwise theconductor circuit is damagedand the controller must bereplaced.01 Controllerinterfaceboard89 HornconductorThere is a problem(short-circuit to negativeor positive, to absenthorn) on the "WARNING"product.Check the horn and its wiring.If the wiring is correct and thealarm persists, there is aninternal fault.