Grove Published 3-22-2021, Control # 702-02 4-71
GRT8120 OPERATOR MANUAL OPERATING PROCEDURES
Hydraulic Oil
Temperature Invalid
Alert
Indicates the hydraulic oil temperature input to the crane control system is
invalid.
Transmission Oil
Temperature Warning
Alert
Indicates the transmission oil temperature is too high.
When safe to do so, move the crane to a location where it can be parked and
secured, then let the transmission cool by running the engine at idle.
Transmission Oil
Temperature Invalid
Alert
Indicates the transmission oil temperature input to the crane control system is
invalid.
Engine Coolant
Temperature Warning
Alert
Indicates the engine coolant temperature is too high.
Safely stop the lifting operations, land and secure any load being lifted. If
possible retract and lower boom. Shut down and secure crane.
Engine Coolant
Temperature Invalid
Alert
Indicates the engine coolant temperature input from the engine ECM is
invalid.
Engine Oil Pressure
Warning Alert
Indicates the engine oil pressure is too low.
Safely stop the lifting operations, land and secure any load being lifted. If
possible retract and lower boom. Shut down and secure crane.
Engine Fault Active
Alert
Indicates there is at least one active engine fault that has been viewed.
New Engine Fault
Active Alert
Indicates there is at least one active engine fault that has not been viewed.
Engine Speed Warning
Alert
Indicates the engine speed is too fast, or the operator is attempting to raise or
lower the suspension while the engine is off.
Apply the service brake to reduce travel speed and RPM, or shift to a higher
gear.
Engine Data Not Valid
Alert
Indicates the crane control system is not receiving the expected data from the
engine ECM.
Alternator Charge Error
Alert
Indicates there is an alternator charge error.
Alternator Charge Low
Alert
Indicates the system voltage is too low, or alternator is not charging.
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