JLG 1230ES Operator Manual - Manual (Page 88)

SECTION 6 - GENERAL SPECIFICATIONS AND OPERATOR MAINTENANCE
6-24 – JLG Lift – 3121221
777 OPEN CIRCUIT PUMP MOTOR WIRING The power module detected a problem in
the drive motors' power circuit wiring. Refer problem to a qualified JLG mechanic.
778 TRACTION T HIGH - CHECK POWER CIR-
CUITS The power module detected a problem in
the drive motors' power circuit wiring. Refer problem to a qualified JLG mechanic.
779 TRACTION T LOW - CHECK POWER CIR-
CUITS The power module detected a problem in
the drive motors' power circuit wiring. Refer problem to a qualified JLG mechanic.
7710 PUMP P HIGH - CHECK POWER CIRCUITS The power module detected a problem in
the drive motors' power circuit wiring.
Refer problem to a qualified JLG mechanic.
7711 PUMP P LOW - CHECK POWER CIRCUITS The power module detected a problem in
the drive motors' power circuit wiring.
Refer problem to a qualified JLG mechanic.
7741 ARMATURE BRAKING CURRENT TOO
HIGH
The power module has detected excessive
braking current . This can be caused by transporting an excessive load on a steep grade.
7742 FIELD VOLTAGE IMPROPER The power module detected a problem in
the drive motors' power circuit wiring. Recycle power on/off, if problem persists;
Refer problem to a qualified JLG mechanic.
7-7 Electric Motor
DTC FAULT MESSAGE DESCRIPTION CHECK
8-1 Tilt Sensor
DTC FAULT MESSAGE DESCRIPTION CHECK
811 TILT SENSOR NOT CALIBRATED The tilt sensor calibration has not been per-
formed. Refer problem to a qualified JLG mechanic.