E018
Alfen
Auxiliary Power Supply Failure
Charger shows E018; internal 12 V / 24 V auxiliary supply error, display may be blank or flickering.
Advertisements
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.
Advertisements
Possible Causes
Failed internal SMPS module, Short circuit on low‑voltage harness, Overload from add‑on modules (Wi‑Fi, RFID, meter), Loose low‑voltage connectors
How to Fix / Troubleshooting
Safety first: Isolate mains power and wait for capacitors to discharge before touching internal power supply components.
- Step 1 – Visual inspection: Open the charger and locate the auxiliary power supply module or section on the main PCB. Look for burn marks, bulging capacitors, or smell of burnt electronics.
- Step 2 – Disconnect add‑on modules: Temporarily unplug non‑essential modules (Wi‑Fi, RFID, external interfaces) and power up to see if E018 clears, indicating an overload.
- Step 3 – Check low‑voltage harness: Inspect for pinched or shorted low‑voltage cables that could be pulling down the supply.
- Step 4 – Measure output (technician): A technician can measure the auxiliary output voltages to confirm if the SMPS is within tolerance.
- Step 5 – Replace faulty module: If the auxiliary supply is defective, replace the main PCB or separate SMPS module as per Alfen’s parts list.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Auxiliary Power Supply Module / Main Control Board
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements