Alfen
No Power / Dead Unit
Charger display or status LEDs are completely dead; no signs of life when power is applied.
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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
No mains supply at charger terminals, Tripped upstream breaker, Blown internal fuse on main PCB, Failed auxiliary power supply module
How to Fix / Troubleshooting
Safety first: Only qualified persons should test for live voltage inside the charger.
- Step 1 – Check upstream breaker: Verify that the dedicated breaker for the Alfen charger is ON and has not tripped.
- Step 2 – Confirm supply voltage: Using a multimeter, check for correct voltage at the charger’s input terminals.
- Step 3 – Inspect internal fuse: With power OFF, open the charger and locate any internal fuses on the main PCB or power entry. Replace only with identical type and rating if blown, and investigate cause.
- Step 4 – Check auxiliary supply: If mains is present but the display is dead, the auxiliary power supply may have failed and the main PCB may need replacement.
- When to call a technician: If internal fuses blow again or no obvious cause is found, a technician should perform further diagnostics.
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Repair Difficulty
Medium
3/5
Required Part
Auxiliary Power Supply Module / Main Control Board
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