Genie XC, HF and J boom lifts (S-60 XC, S-80 XC, S-85 XC, S-80 HF, S-85 HF, S-60 J, S-80 J)
Genie error code 21-28 — startup
Message on the display: startup
Code 21-28 occurs in machines: Genie S-80 XC, S-85 XC, S-80 HF, S-85 HF, S-60 XC, S-60 J, S-80 J.
warning / function limited
The Genie display shows code 21-28 with the message “startup”. It is a warning: some functions of the machine may be limited until the cause has been removed.
Possible causes
- within the startup voltage range of 2.5 V +/- 0.2 V.
What you can do
Switch the machine off with the emergency stop and switch it on again. If the code comes back, do not use the machine and call service.
Solution from the manual
0.5 V when fully stroked in each direction. * Replace joystick if voltage check fails.
Source: Genie Service and Repair Manuals (Part No. 1316494, 1315679, 1288652, 1280490, 1285305, 1285307), Fault 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 21-28 not go away?
RK Rental services Genie 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.
Genie service · Genie parts · All Genie codes of this system
Neighbouring Genie codes
- 21-15Primary Boom Up / Down Joystick — Joystick voltage too low.
- 21-19Primary Boom Up / Down Joystick — Joystick held at startup.
- 21-27Active at startup
- 22-11Pri Boom Up coil — Shorted to supply voltage
- 22-12Primary Boom Up Valve — Circuit shorted to V+
- 22-15Primary Boom Up Valve — Circuit shorted to GND