Charger shows E05 and refuses to start; sometimes occurs after a power surge or lightning event.

Safety first: Only a qualified electrician should measure mains voltages. Isolate the charger before opening the enclosure.

• 1. Measure supply voltage: At the charger’s input terminals (with cover removed and appropriate PPE), measure line-to-neutral and line-to-earth voltages. Confirm they are within Vestel’s specified range (typically 230 V ±10% for single-phase units).
• 2. Tighten terminals: With power off, check that L, N, and PE terminals are tight and that no copper is exposed. Loose connections can cause voltage drops and intermittent E05 errors.
• 3. Inspect surge protection device: Many Vestel chargers include an SPD module. Check its status indicator (often green = OK, red = failed). If failed, replace the SPD with an equivalent rated module.
• 4. Check internal low-voltage power supply: Verify that the low-voltage rails (e.g., 12 V, 5 V) from the SMPS/power board are stable using a multimeter. If absent or fluctuating, replace the power supply board.
• 5. Monitor for grid issues: If the supply voltage is unstable or outside tolerance, advise the customer to contact their electricity provider or an electrician to correct the supply problem.