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 72-21 — Lift Guard Contact Alarm Switch — Fault
Message on the display: Lift Guard Contact Alarm Switch — Fault
Code 72-21 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.
blocking fault
The Genie display shows code 72-21 with the message “Lift Guard Contact Alarm Switch — Fault”. It is a blocking fault or a safety-related code: do not use the machine until the cause has been found and removed.
Effect on the machine: Boom Up and Extend functions will not operate.
Possible causes
The manual does not list the causes for this code: the service technician establishes them during diagnosis of the machine.
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
* Using a voltmeter, verify that the voltage on C248CA (OR/BK, PCON J12-1) is always the opposite of C247CA (OR, PCON J12-11). * Check wiring for open or short circuits. * Verify SW30 is receiving power and ground by verifying 12 V across C31 pins 1 and 3. * Replace SW30 if necessary.
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 72-21 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.
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