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Genie DC and FE electric boom lifts (Z-60 DC, S-60 DC, Z-45 DC, Z-45 FE, Z-33/18 DC)

Genie error code 204-21 — Main Battery (Charger) — Fault

Message on the display: Main Battery (Charger) — Fault

Code 204-21 occurs in machines: Genie Z-60 DC.

blocking fault

The Genie display shows code 204-21 with the message “Main Battery (Charger) — Fault”. It is a blocking fault or a safety-related code: do not use the machine until the cause has been found and removed.

Possible causes

  • Voltage detected but the charger is unable to charge the battery Battery could not be trickle charged up to the minimum voltage

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

Check for shorted battery cells Check for damaged battery cells Check DC connections Replace batteries Self clearing when condition has been corrected.

Source: Genie Service and Repair Manuals (Part No. 1307785, 1299608, 1297714, 1271125, 1268514), 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 204-21 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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