Scissor Lift Error Codes

03/09/2022

All Hy-Brid Lifts feature an LED display on the lower control board for error code diagnosis. By noting the number of times the light flashes between pauses, you can determine which error code is being presented, and take the necessary steps to fix the issue. Hy-Brid Lifts use a dual flash code, meaning two numbers will be given in each sequence. For example, if the code being presented reads 3-2, you will see three flashes in short succession, a brief pause, then two more flashes followed by a long delay as the cycle resets. This code would then look like on/off/on/off/on/off—pause—on/off/on/off—pause—repeat.

It's important when reading codes to note the difference between short and long delays and understand that the code resets after the long pause. Mistaking these two delays will cause you to read the code backward and misdiagnose the cause.

Below is a list of LED codes shown by the control board and the possible causes for each. Please note that certain codes have multiple potential causes, and discretion must be used when diagnosing the issue further.

LED Code Possible Cause
Fast Flash Control module is not calibrated. Do not operate unit.
Steady

Unit has just been powered on. You may need to wait for initialization, then re-select function.

 

Ready to operate, things should be working normally.

 

A function is selected but the enable trigger is not squeezed.

1-1 The control module is not calibrated. Do not use this unit.

2-1 (Pro Series/Zero-Turn Series)

The key selector switch indicates the mode in which the TS100 must operate. If neither input is active or both are active together, the TS100 does not know how to function.

 

Check key switch and wiring to P15-1 and P12-1.

2-1 (Push-Around Series)

The key switch selector switch indicates the mode in which the EZ LIFT 140 must operate. If neither input is active, or if both are active together, the EZ LIFT 140 does not know how to function.

 

Check key switch and wiring to P1-1 and P2-1.

2-2

A safety feature is locking functions or a switch has failed.

 

Check that platform is not overloaded, operating on a level surface.

 

Check that joystick is in neutral when powered on.

 

Check that joystick trigger is not closed for too long without selecting a function.

 

Check for failed joystick, selector switches, and up/down switches.

3-x

There is a problem with the device contactor or valve wiring, or with the motor power wiring; disconnect connector P9 to see if the problem is caused by drive contactor or valve wiring (if the fault clears, check for an illegal B+ supply in to P9).

 

Check motor power wiring; with the drive contactor open the B+ power terminals should be at 10V-15V (significantly lower than B+). If the LED is steady at power-on, and the fault (3-5) occurs after a delay when attempting to drive or lift, the motor may be stalled and causing an overload of the TS100 or there is a power wiring error like connecting the B+ cable to a motor stud.

3-2 Check P9 wiring. One or more signals showing outputs when all should be off.
3-3 Check B+ stud connections on controller. Voltage is too high.
3-4

There is voltage on safe pre-valve supply when there should not be.

 

Controller may need to be replaced.

3-5 (Pro Series/Zero-Turn Series)

The drive brake current is too high.

 

Motor overload. Check for a seized motor or for power wiring to motors.

4-x

There is a problem with battery supply, the height and/or pressure sensors, the supply to them, or the temperature sensor inside the TS100.

 

Check battery supply to EMS inputs P15-1 or P12-1 (relative to the B- stud); the battery supply should be between 15V and 32V.

 

Check the output from height sensor (P12-12).

4-x

There is a problem with battery supply, the height and/or pressure sensors, the supply to them, or the temperature sensor inside the EZ LIFT 140.

 

Check battery supply to EMS inputs P1-1 or P2-1 (relative to the B- stud); the battery supply should be between 15V and 32V.

 

Check the output from height sensor (P12-12).

 

If the TS100 heatsink is very hot then perhaps the controller has temporarily shut down—if so, platform lowering is still allowed; wait for the controller to cool down.

4-2

Functions locked: board is overheated. Check pump and drive motor wiring.

 

Problem with controller inner voltage. Controller may need to be replaced.

4-3 Problem with controller inner voltage. Controller may need to be replaced.
4-4

Battery supply is too low or too high.

 

Make sure batteries are fully charged.

 

Do not operate while charging.

4-5

Joystick signal problem.

 

Wiring problem—check for short circuits, misconnection, and P15-12 connection.

6-x

There is a problem with the height measurements or the elevation switch disagrees with the height sensor.

 

Check that the output from height sensor (P12-12) is in range (between 0.5V and 4.5V).

6-1 Problem with angle sensor or its connections.
6-2 Problem with pressure sensor or its connections.
6-3 Problem with elevation switch or its connections.
6-6 Problem with CANbus wiring and/or connections.
7-x

There is a problem with the power wiring—the voltage on the B+ stud is too low.

 

Check for a short-circuit to the B+ stud.

7-1 Motor A current too high.
7-2 Motor A current too low.
7-3 Motor B current too high.
7-4 Motor B current too low.
7-5 Check drive connections at both drives—short or multiple wiring failures.
7-7 Check B+ stud connections on controller. Voltage is too low.

 

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