JLG ES series scissor lifts (1930ES, 2030ES, 2630ES, 2646ES, 3246ES)
JLG error code 228 — FUNCTION LOCKED OUT - ACCELERATOR NOT CENTERED
Message on the display: FUNCTION LOCKED OUT - ACCELERATOR NOT CENTERED
Code 228 occurs in machines: JLG ES series, 1932RS, 6RS, 3248RS, 10RS, 4045R, R4045.
blocking fault
The joystick was not centered at powerup.
Description from the JLG service manual, in the original wording.
Possible causes
The manual does not list the causes for this code: the service technician establishes them during diagnosis of the machine.
Checks from the manual
- Release joystick and allow to center.
- Check if the joystick is obstructed or jammed.
- Check the joystick signal and its wiring. The joystick input (5V) is from the platform board terminal J1-5, its output (2.5V with joystick at center) to the platform board terminal J1-6, and its ground (0V) is to the platform board terminal J1-7. Observe output signal while slowly operating joystick.
- Replace platform board.
What service does
A qualified service technician reads the code with the manufacturer's diagnostic tools, finds the cause, clears the code and carries out a function test.
Source: JLG Service and Maintenance Manual, ES series (Diagnostic Trouble Codes section).
The descriptions are quoted from the manufacturer's service documentation and are for guidance only. Clearing codes, calibrations and repairs are carried out by a qualified service technician according to the manual for the specific serial number. A machine with an active blocking code must not be used until the cause has been removed.
Does code 228 not go away?
RK Rental services JLG lifts at our workshop or on site at the customer's premises (construction site, factory, warehouse). We read the code, remove the cause and select the parts by serial number.