Separate derating from a true thermal fault
Flashing current bars usually mean the charger is derating because of temperature, not failing. A true thermal fault is a fault code such as F06, F07, or F08.
Use this path when charging slows or stops because the charger is overheating or showing a thermal fault.
Run these quick checks before you assume the charger has a deeper hardware fault.
AC socket is energised. Test it with another appliance.
AC plug is fully inserted, undamaged, and its pins are clean and straight.
DC output connector is fully locked into the vehicle inlet, not just inserted.
Both AC and DC cables are free of cuts, kinks, crushing damage, or severe bending.
Charger vents are unobstructed and have at least 10 cm clearance on all sides.
Ambient temperature is below 45 C.
No extension cord is being used, or the cord is correctly rated and within the allowed length.
Universal reset has been tried: AC off for 30 seconds, then reconnect.
Follow the steps in order. Stop and escalate as soon as a step says the issue is not field-serviceable.
Flashing current bars usually mean the charger is derating because of temperature, not failing. A true thermal fault is a fault code such as F06, F07, or F08.
Disconnect AC immediately and allow at least 20 minutes for the charger to cool before the next attempt.
Use a dry cloth, dry brush, or gentle compressed air. Dust build-up is one of the biggest reasons repeated thermal faults keep returning.
Keep at least 10 cm of clear space on all sides and above the charger. Never cover it with fabric, documents, or packaging.
Above 45 C ambient, output current reduces. Charging in direct sun, inside a hot compartment, or near other hot equipment can force derating or shutdown.
If thermal trips continue after cleaning, cooling, and restoring airflow, the internal thermal sensor or calibration may have drifted.
Keep moving between the support guides below to narrow the issue faster.
Pick a symptom and follow the correct field checks before escalating to service.
Understand the AC input path, PFC stage, DC-DC stage, relay, and thermal controls.
Review safe charging rules, environment limits, and warranty-sensitive handling mistakes.