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3. TROUBLESHOOTING GUIDE
(1) Drive system (4/5)
Error code
on display
Error description Problem Resetting Error code conditions
LED
code
Page
219
Drive motor inverter unit upper FET
defective
(Error Code 418 also occurs because
the drive and load handling units are
connected with a copper bar.)
(Error Code 217 is also triggered
because the capacitor between the P and
N terminals cannot be charged.)
The travel, load handling, and PS (power
steering) systems are inoperative.
Contactor OFF.
Turn the key switch OFF. 19 54
220
Drive motor inverter unit lower FET
defective
(Error Code 418 also occurs because
the drive and load handling units are
connected with a copper bar.)
(Error Code 217 is also triggered
because the capacitor between the P and
N terminals cannot be charged.)
The travel, load handling, and PS (power
steering) systems are inoperative.
Contactor OFF.
Turn the key switch OFF. 21 54
221 Travel overspeed The truck can be driven normally.
Automatically resets when
the input returns to normal.
94 54
307
Accelerator potentiometer not positioned
properly
The truck can be driven normally.
Automatically resets when
the input returns to normal.
When the key switch is turned ON:
• Accelerator 1: 0.8 V or less
• Accelerator 2: 0.4 V or less
- 53
308
Contactor coil broken
(Blown fuse)
The travel, load handling, and EPS
systems are inoperative.
Turn the key switch OFF. 12 55
309 Contactor stuck
The travel, load handling, and EPS
systems are inoperative.
Turn the key switch OFF. The contactor is stuck. 11 55
318
Overvoltage
(Battery connectors disconnected during
regenerative braking)
The truck won’t travel, and the load
handling and EPS systems won’t work.
Automatically resets when
the input returns to normal.
48 V trucks: More than 72 V
72 V trucks: More than 118 V
86 55
503 Wheel angle sensor defective
Steering SSC
Loss of control
Automatically resets when
the input returns to normal.
52 55
600
LCD panel data reception error
(Communication wire broken)
The truck can be driven normally.
Mode selection is not possible.
Operates with default settings.
Automatically resets when
the input returns to normal.
65 56
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