Thermador Dishwasher Error E9001

⚡ Quick Answer: The Thermador dishwasher error E9001 indicates a low incoming power supply issue, preventing the appliance from starting or completing its cycles. Thi... ✅ DIY Fixable

What Does Error E9001 Mean?

The Thermador dishwasher error E9001 indicates a low incoming power supply issue, preventing the appliance from starting or completing its cycles. This error may also be accompanied by unusual sounds during operation, signaling that the voltage to the dishwasher is insufficient for normal functioning. Addressing the power supply is crucial to resolve this error effectively.

Common Symptoms:

  • Dishwasher displays E9001 on control panel
  • Dishwasher may not start or may stop mid‑cycle if voltage is insufficient

Possible Causes

  • Low incoming household voltage to the appliance (medium)

How to Fix Error E9001

DIY Fix Check power supply and reset

  1. Turn off dishwasher and switch off its circuit breaker.
  2. Wait about 30 seconds.
  3. Switch the breaker back on to restore power.
  4. Observe if the error clears or returns.

Technician Only Measure and adjust incoming voltage

  1. Use a multimeter to measure voltage at the dishwasher’s terminal block.
  2. Verify it meets the required supply range per model specifications.
  3. Check for loose connections or faulty wiring in the household supply.
  4. Correct any identified electrical issues.

Parts needed: Multimeter (for diagnostics), Wiring/connectors (if replacement required)

🛑 When to Call a Pro:
  • If the error persists after power reset and confirmed normal household voltage.
  • If there are signs of electrical damage (burn marks, burning smell) around the dishwasher’s wiring.

Technical Specifications

wattage 60W
component Drain Pump
resistance 10-20 ohms
part_number Thermador 00730019
voltage_rating 120V AC

Common Questions

What does E9001 error mean on Thermador dishwasher?

E9001 indicates a low power supply issue, causing the dishwasher to fail starting or complete cycles.

Can I fix Thermador dishwasher E9001 error myself?

Yes, you can reset the dishwasher by turning off the circuit breaker and waiting 30 seconds before turning it back on.

How much does it cost to fix E9001 error?

The estimated repair cost ranges from ¥5,000 to ¥25,000, depending on the region and extent of the repair.

When should I call a technician for E9001?

Call a technician if the error persists after resetting or if you notice signs of electrical damage around the dishwasher.

Sources & References

Data last verified: 2026-03-25

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