E19
Webasto Generic Internal Hardware Fault

Charger shows E19 or ‘internal fault’; generic hardware error; unit will not charge.

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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

Defective relay driver, Sensor failure not mapped to a specific code, Internal power supply instability, PCB damage from surge or lightning

How to Fix / Troubleshooting

Safety first: Do not continue to reset and use a charger with repeated internal fault codes.

  • Power cycle: Turn off the breaker for 5 minutes, then restore power and observe if E19 returns immediately or only during charging.
  • Check for visible damage: Without opening the unit, look for burn marks, melted plastic, or unusual smells around the housing.
  • Surge protection: If the error followed a storm or grid event, have an electrician check for surge damage and consider adding surge protection.
  • Service call: Internal diagnostics and board-level repair require an authorized Webasto service technician. The main PCB or submodules may need replacement.
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Repair Difficulty

Professional Required 5/5

Required Part

Webasto Main Control PCB
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