SECTION 3 - TROUBLESHOOTING AND FAULT CODES
31215460
3-5
41
Wrong Set Battery
The battery voltage is too low or
too high.
Check the battery voltage.
42
Aux driver open
Driver of EB coil is damaged (not
able to close).
Replace the inverter.
47
Epv2 not ok
Evp2 driver is failed shorted.
Check the inverter feed.
48
Epv1 not ok
Evp driver is failed shorted.
Check the inverter feed.
49
I=0 Ever
Feedback current from motor’s
sensor not constantly kept at 0.
Control the connection with the
motor
50
Evp1 coil open
Evp1 coil in not connected.
Check the main relay; replace the
inverter
51
Evp2 coil open
Evp2 coil in not connected.
Check the main relay; replace the
inverter.
53
STBY I high
Fault detected in the inverter.
Usually it is a temporary anomaly
due to a working condition. In
case the anomaly persists replace
the inverter.
53
Wrong Zero MDI Can Code Alarm
Wrong voltage signal from
amplifiers.
Replace the Inverter.
54
Logic Fail #1
Overvoltage/ Under voltage
condition has been detected.
Check the feed on the inverter
(12V and 48/72V).
55
Logic fail #2
Motor Voltage feedback circuits
are damaged.
Replace the inverter.
60
Capacitor Charge
Problem in the inverter.
Control the inverter connections
and supply; replace the inverter.
61
High temperature
Temperature rise in the inverter.
Allow better cooling to the
inverter. If the anomaly remains,
contact JLG.
65
Motor temperat
High motor temperature.
Stop the machine temporarily to
enable motor cooling.
67
Can Bus KO
The inverter does not receive any
information from CAN BUS line.
Control the connections with the
multi-function tool
68
Smart Driver KO
Smart driver is open, not able to
provide EB positive.
Check the inverter supply and
connections; replace the inverter.
70
Encoder Error
Anomaly detected on encoder
(= engine rpm sensor).
Control the rpm sensor
connection. The anomaly may
also be caused by a bearing fault.
72
Vmn low
Motor output voltage lower than
expected.
Check the connections from the
inverter to the electric motor;
check the internal electric motor
connections.
73
Thermis sensor KO
The signal from the temperature
sensor is higher than 4.95 Volt or
lower than 0.1 Volt.
Usually it is a temporary anomaly
due to a working condition. In
case the anomaly persists replace
the inverter.
Table 3-3. Inverter Fault Codes
Error Code
Error Condition
Error Description
Corrective Action
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