RRepairGraph
Bosch · Dishwasher · E27

When a technician is needed

The electrical supply voltage is too low.

Diagnostic nodeE27TECHNICIAN
!
Use this as a diagnostic branchConfirm the exact model manual before ordering parts or opening the appliance.

Coverage: Bosch dishwashers that use E27/E:27; regional voltage thresholds differ.

GUIDANCE

When a technician is needed for error E27

Qualified help is appropriate when Always stop if lights flicker, wiring smells hot or breakers trip; Do not measure mains voltage unless qualified. Do not bypass sensors or energize an opened appliance.

Safe sequence

  1. 1Turn the dishwasher off.
  2. 2Confirm the plug is fully seated without opening electrical enclosures.
  3. 3Use a qualified electrician to check the supply voltage and circuit.

Stop and get qualified help when

  • Always stop if lights flicker, wiring smells hot or breakers trip
  • Do not measure mains voltage unless qualified
Primary sourceBosch UK — dishwasher E27 ↗Verified 2026-07-17 · manufacturer