Winterhalter No Power / Supply Fault

Machine completely dead; no lights or display, will not power on.

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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

Tripped circuit breaker, Blown internal fuse, Faulty main power switch, Loose power terminal connections

How to Fix / Troubleshooting

Safety first: Only qualified personnel should open electrical panels. Always isolate at the main breaker first.

  • Check external supply: Verify that the wall breaker or isolator feeding the dishwasher is on and not tripped.
  • Inspect power cord and plug (if fitted): Look for damage or overheating signs.
  • Internal fuse: A technician should check and replace any blown internal fuses with the correct rating and investigate the cause.
  • Check main switch: If the illuminated main switch does not light when turned on, it may be defective and require replacement.
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Repair Difficulty

Hard 4/5

Required Part

Main Power Switch
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