JCB Controller Keypad / Firmware Glitch

Control panel display is on but buttons are unresponsive or menus freeze intermittently.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Moisture ingress into panel, Damaged keypad membrane, Firmware bug, Electrical noise on supply

Safety: Avoid spraying liquids directly onto the control panel.

Power cycle: Isolate DC supply to the controller for a few minutes, then restore and observe operation.
Inspect panel: Check for signs of condensation or water inside the panel. Dry thoroughly and improve sealing if necessary.
Keypad test: Press each key and observe response. If some keys never respond, the keypad membrane may be damaged and require controller replacement.
Firmware update: Consult JCB support for any firmware updates addressing known issues.

Medium 3/5

Generator Controller

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