Operator Manual User Manual

SECTION 6 - GENERAL SPECIFICATIONS AND OPERATOR MAINTENANCE
3121221 – JLG Lift – 6-21
4-2 Thermal Limit (SOA)
DTC FAULT MESSAGE DESCRIPTION CHECK
421 POWER MODULE TOO HOT - PLEASE
WAIT
The power module has reached thermal cut-
out.
• Power down and allow to cool.
• Do not operate in ambients over 140° F (60° C).
Refer problem to a qualified JLG mechanic.
422 DRIVING AT CUTBACK - POWER MOD-
ULE CURRENT LIMIT
The drive portion of the power module has
reached thermal limit.
Refer problem to a qualified JLG mechanic.
423 LIFT UP AT CUTBACK - POWER MODULE
CURRENT LIMIT
The lift up portion of the power module has
reached thermal limit.
Refer problem to a qualified JLG mechanic.
4-4 Battery Supply
DTC FAULT MESSAGE DESCRIPTION CHECK
441 BATTERY VOLTAGE TOO LOW - SYSTEM
SHUTDOWN
A problem has been detected with the bat-
teries or power module.
• Recharge batteries or check for damaged batteries.
• Check battery charger function.
Refer problem to a qualified JLG mechanic.
442 BATTERY VOLTAGE TOO HIGH - SYSTEM
SHUTDOWN
A problem has been detected with the bat-
teries or power module.
• May be due to improper battery charging or incorrect voltage batteries
being used.
Refer problem to a qualified JLG mechanic.
443 LSS BATTERY VOLTAGE TOO HIGH A problem has been detected with the load
sense system.
• May be due to improper battery charging or incorrect voltage batteries
being used.
Refer problem to a qualified JLG mechanic.