E17
EO Charging
Low‑Voltage Power Supply Failure
EO charger displays E17; app may indicate internal power supply fault.
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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
Failed internal SMPS on main PCB, Short circuit on low‑voltage rail, Surge damage from lightning or grid events, Loose low‑voltage connectors
How to Fix / Troubleshooting
Safety first: Isolate power and wait for capacitors to discharge before touching the PCB.
- Observe LEDs: Some EO boards have diagnostic LEDs indicating low‑voltage rails. Note their status before powering down.
- Inspect for damage: Look for bulging capacitors, burnt components, or discoloration around the power supply section of the PCB.
- Check low‑voltage harnesses: Ensure that any 12 V/24 V or logic‑level harnesses are correctly seated and not shorted by trapped wires or metal debris.
- Surge protection: If the failure followed a storm or grid event, consider adding or upgrading surge protection at the distribution board when replacing the PCB.
- Replace PCB: Internal SMPS faults are not typically field‑repairable. Replace the main control PCB with an EO‑approved spare.
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Repair Difficulty
Hard
4/5
Required Part
EO main control PCB
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