MUSTART Mechanical Vibration / Loose Internal Mounting

Charger’s housing vibrates or rattles noticeably when the relay engages or during charging.

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

Loose internal relay mounting screws, loose housing screws, charger not firmly mounted to wall, resonance between charger and mounting surface

Safety warning: Do not open the charger to tighten internal components.

Check mounting hardware: Ensure all external mounting screws and brackets securing the MUSTART charger to the wall are tight.
Add backing support: If mounted on thin siding or paneling, consider adding a solid backing board to reduce vibration.
Listen for internal rattle: If you hear parts moving inside when gently tapped (with power off), internal components may be loose and require service.
Service if internal: Internal loose parts must be secured by a qualified technician.

Medium 3/5

Charger Housing / Internal Mounting Hardware

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