OpenEVSE Moisture Ingress / Inadequate Sealing

Water or condensation visible inside the EVSE enclosure; corrosion on terminals or boards.

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Safety Warning

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.

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Possible Causes

Damaged enclosure gasket, Unsealed cable entry or conduit, Installation in area with direct water spray, Missing or blocked drain/weep holes

How to Fix / Troubleshooting

Safety first: Turn off power immediately if water is present inside the enclosure. Do not operate until fully dry and inspected.

  • Step 1 – Dry the unit: With power OFF and cover removed, gently dry internal components with a clean cloth and allow to air dry completely. Do not use high heat directly on boards.
  • Step 2 – Assess corrosion: Light surface corrosion on terminals can be cleaned with contact cleaner and a brush. Heavy corrosion on the main board or contactor warrants replacement.
  • Step 3 – Improve sealing: Inspect and replace the door gasket if cracked or compressed. Ensure cable glands or conduit fittings are properly tightened and rated for outdoor use.
  • Step 4 – Provide drainage: Verify that any designed weep holes are clear so condensation can escape.
  • Step 5 – Relocate if necessary: If the EVSE is exposed to direct rain or sprinklers beyond its rating, consider adding a weather hood or relocating.
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Repair Difficulty

Medium 3/5

Required Part

Enclosure Gasket / Cable Glands
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