Inverter fault codes – JLG X20JP - X600AJ Service Manual User Manual
Page 288
SECTION 6 - JLG CONTROL SYSTEM
6-72
– JLG Lift –
3121623
Inverter fault codes
Table 6-10.
CODE
MEANING
1
Wrong Config
Cause: Eeprom memory not configured
Solution: Contact JLG after sales dept.
8
Watch Dog
Cause:
The inverter is unable to activate or turn off the electric motor
Solution:
Control connections and continuity of the electric motor. If they are OK replace the inverter.
8
Flash Checksum
Cause:
Software is corrupted or inverter is damaged
Solution: Replace the inverter
13
Eeprom KO
Cause:
Hardware or Software problem in eeprom
Solution:
Replace the inverter
16
Aux output KO
Cause:
Electromechanical brake problem
Solution:
Usually it is a temporary anomaly due to a particular working condition. In case the anomaly
persists replace the inverter.
17
Logic failure #3
Cause:
Activates in case of high peak of current in the inverter.
Solution:
Usually it is a temporary anomaly due to a particular working condition. In case the anomaly
persists replace the inverter.
18
Logic Failure #2
Cause:
Fault in the inverter
Solution:
Replace the inverter
19
Logic failure #1
Cause:
An overvoltage or a sudden voltage drop occurred.
Solution:
Usually it is a temporary anomaly due to a particular working condition. In case the anomaly
persists replace the inverter.
26
Current Sens KO
Cause:
Current sensor for the motor phases is damaged
Solution: Replace the inverter
27
Phase KO
Cause:
One of the motor phases is open
Solution: Check the connexions from the inverter to the motor
28
Pump Vmn Low
Cause:
Pump motor output is too low
Solution: Check the electric motor connexion
29
Pump Vmn Hig
Cause:
Pump motor output is too high
Solution: Check the electric motor connexions
30
VMN low
Cause:
Inverter supply voltage is lower than the batteries’ one, or the connection with the positive ter-
minal of the battery is not correct.
Solution: Control the connection with the positive terminal of the battery. If the anomaly persists
replace the inverter.
31
VMN High
Cause:
One motor phase is not correctly connected or is broken.
Solution:
Control motor phases and motor internal connexions. If the anomaly persists replace the
inverter.
37
Contactor closed
Cause:
The relay remains closed with power to the coil disconnected.
Solution:
Control the relay
38
Contactor Open
Cause:
The inverter feeds the relay’s coil but the contact does not close.
Solution:
Control the relay and the power to the coil
40
Aux driv Shrt
Cause:
When the mos of EB is shorted
Solution:
Check the battery feed.
41
Wrong Set Battery
Cause:
The battery voltage is too low or too high
Solution:
Check the battery voltage
42
Aux driver open
Cause:
Driver of EB coil is damaged (not able to close)
Solution:
Replace the inverter