4 – OPERATOR SERVICE
35
Error Message
Displayed
Error Explanation &
Possible Causes
What To Check &
Corrective Action To Clear
Error
019 BOOM FUNCTION
DISABLED
The Load Sense Module has detected an overloaded
boom condition which caused the Lower Control to
disable all boom functions.
This is a self clearing error. When error condition is
removed, error is cleared.
NOTE: This error only occurs on machines equipped
with the Load Sense option.
Possible causes include:
1. Too much weight in basket or on hook
2. Lower Control incorrectly configured
3. Faulty Load Cell
4. Faulty Load Cell wiring
5. Faulty Load Sense Module
6. Faulty Lower Control
1. Reduce weight in basket or on hook
2. Correctly configure Lower Control
3. Replace Load Cell
4. Repair or replace Load Cell wiring
5. Replace Load Sense Module
6. Replace Lower Control
020 LOSS OF LOAD
CELL CONNECTION
The Load Sense Module has detected a loss of
connection to the Load Cell.
This is a self clearing error. When error condition is
removed, error is cleared.
NOTE: This error only occurs on machines equipped
with the Load Sense option.
Possible causes include:
1. Faulty Load Cell
2. Faulty Load Cell wiring
3. Faulty Load Sense Module
1. Replace Load Cell
2. Repair or replace Load Cell wiring
3. Replace Load Sense Module
021 OPEN CIRCUIT
PRIMARY UP
The Lower Control has detected an open circuit on the
Primary Up solenoid output when it was energized
during startup self diagnostics.
NOTE: A load of less than 70mA will be detected as an
open circuit. The typical load is approximately 800mA.
Possible causes include:
1. Faulty Primary Up solenoid wiring
2. Faulty Primary Up solenoid
3. Faulty Lower Control
1. Repair or replace Primary Up solenoid
wiring
2. Replace Primary Up solenoid
3. Replace Lower Control
022 SHORTED CIRCUIT
PRIMARY UP
The Lower Control has detected excessive current on
the Primary Up solenoid output when it was energized
during startup self diagnostics.
Possible causes include:
1. Faulty Primary Up solenoid wiring
2. Faulty Primary Up solenoid
3. Faulty Lower Control
1. Repair or replace Primary Up solenoid
wiring
2. Replace Primary Up solenoid
3. Replace Lower Control
023 OPEN CIRCUIT
PRIMARY DOWN
The Lower Control has detected an open circuit on the
Primary Down solenoid output when it was energized
during startup self diagnostics.
NOTE: A load of less than 70mA will be detected as an
open circuit. The typical load is approximately 800mA.
Possible causes include:
1. Faulty Primary Down solenoid wiring
2. Faulty Primary Down solenoid
3. Faulty Lower Control
1. Repair or replace Primary Down solenoid
wiring
2. Replace Primary Down solenoid
3. Replace Lower Control
