Display shows 'OVER TEMP' or 'TEMP HIGH', charging current is reduced or charging stops until unit cools.

Safety first: High temperatures can damage wiring and cause fire. Turn off power if you smell burning or see discoloration.

• Step 1 – Check environment: Ensure the EVSE is not installed in direct sun without shade, or in a sealed box with no airflow. Provide shade or ventilation as needed.
• Step 2 – Inspect for obstructions: Make sure vents or weep holes in the enclosure are not blocked by dirt, insects, or insulation.
• Step 3 – Tighten terminals: With power OFF, open the enclosure and check all line, neutral, and ground terminals for tightness. Loose connections can overheat. Look for discoloration or melted insulation and replace any damaged wires.
• Step 4 – Sensor check: Locate the temperature sensor (often a small thermistor on the main board or CT board). Ensure it is not pressed against a hot component unnecessarily and that its leads are intact. If the sensor reads high even when the unit is cool, replace the board or sensor assembly.
• Step 5 – Firmware settings: Verify that the maximum current setting is appropriate for the circuit rating. Oversetting current can cause overheating of wiring and contactor.