Hager
Unstable Internal Power / Brownout Reset
Charger repeatedly restarts or reboots during a charging session; LEDs cycle as if powering up.
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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
Faulty low‑voltage power supply module, Overheating of main control board, Supply voltage dips under load, Firmware crash causing watchdog resets
How to Fix / Troubleshooting
Safety first: Frequent resets can interrupt charging but are usually not immediately dangerous. However, they may indicate deeper electrical issues.
Steps to try:
- Check supply stability: Have an electrician measure voltage at the charger during load to ensure it remains within spec.
- Reduce current: Temporarily lower the charging current to see if reboots stop, indicating a load‑related issue.
- Ensure ventilation: Confirm the charger is not overheating due to blocked vents or direct sun.
- Firmware update: Install any available updates that may address stability issues.
- Technician replacement: If reboots persist, the internal power supply or main control board may need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Internal Power Supply Module
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