2200 YRM 1067
Troubleshooting
Dash Display
Controller LED
Handset or PC - 24V
AL02
2 Flashes
CONTACTOR CLOSED
CONDITION
Main contactor circuit is damaged.
TRUCK RESPONSE
Traction and hydraulic functions disabled.
POSSIBLE CAUSES AND TEST PROCEDURES
•
Main contactor tips are welded closed.
Disconnect power leads at contactor. Use meter to
confirm open circuit across power terminals.
If short circuit is measured, replace contactor.
•
Problem in motor field circuit.
Verify electrical connections between motor field
and controller.
Check motor field for shorts to chassis.
•
Controller is damaged.
Replace controller.
Refer to the section
Electrical System
2200 YRM
1007 for more information on troubleshooting electrical
system circuits and components.
LOGIC
Occurs when the
controller detects a short in the main contactor circuit.
Dash Display
Controller LED
Handset or PC
AL4
4 Flashes
EVP NOT OK
CONDITION
Lowering valve will not operate correctly.
TRUCK RESPONSE
Traction and hydraulic functions disabled.
POSSIBLE CAUSES AND TEST PROCEDURES
•
Damaged or loose electrical connection to lowering
valve.
Verify electrical connections between valve coil and
controller.
•
Lowering coil damaged.
Check lowering valve coil for correct resistance.
Coil resistance should be approximately 33 ohms.
Replace coil if damaged.
•
Lowering valve cartridge is damaged.
Replace lowering valve cartridge.
Refer to the section
Electrical System
2200 YRM
1007 for more information on troubleshooting electrical
system circuits and components.
LOGIC
Occurs if electro-propor-
tional valve is open before circuit is energized. Valve
does not follow the supplied signal from controller.
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