E27 Error: Mains voltage too low — Supply voltage fault

Mains voltage too low — Supply voltage fault

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Diagnostic Steps

1

Step 1

Check with an electrician that mains voltage is correct (230V ±10%)
2

Step 2

Try a different mains socket
3

Step 3

If voltage is correct, the control board may have a faulty voltage sensor

⚠️ Always disconnect your appliance from mains power before starting any repair. If in doubt, consult a qualified engineer.

OEM: 00648858

Main electronic control board. Last resort diagnosis. Causes multiple errors. Expensive — exclude all other causes first.

What does the E27 error mean on a Siemens dishwasher?↓

Mains voltage too low — Supply voltage fault

Can I fix the E27 error myself?↓

Many E27 faults can be resolved by a competent DIYer. Always disconnect from mains power first. If unsure, consult a qualified engineer.