Siemens Dishwasher Error h04

⚡ Quick Answer: The Siemens Dishwasher error code H04 typically indicates the water hardness setting. It may appear during normal operation or at the start of a wash ... ✅ DIY Fixable

What Does Error h04 Mean?

The Siemens Dishwasher error code H04 typically indicates the water hardness setting. It may appear during normal operation or at the start of a wash program. This display does not signify a technical fault, as the dishwasher operates normally and completes cycles without interruption. If you see H04, consult your user manual to check and adjust the water hardness setting if necessary.

Common Symptoms:

  • Display shows “H04” during normal operation or at program start
  • Dishwasher otherwise operates normally without interruption
  • No traditional E‑code style fault (e.g., E15, E24) accompanies the H04 display

Possible Causes

  • Drain Pump
  • Clogged Drain Hose
  • Faulty Pressure Switch

How to Fix Error h04

DIY Fix Check water hardness setting

  1. Refer to your specific Siemens dishwasher user manual to locate the water hardness adjustment procedure.
  2. Navigate to the water hardness setting in the dishwasher’s menu or control panel.
  3. Confirm whether “H04” represents the current water hardness setting.
  4. If required, adjust the water hardness level according to your local water hardness value.

DIY Fix Verify Normal Operation

  1. Run a standard wash cycle and observe whether the dishwasher completes the cycle normally.
  2. Check for any additional error codes or unusual sounds during operation.
🛑 When to Call a Pro:
  • If the dishwasher shows other official E‑style fault codes (e.g., E15, E24, etc.) alongside “H04.”
  • If the machine fails to complete cycles, leaks, or exhibits other clear malfunction symptoms.

Technical Specifications

wattage 30W
component Drain Pump
resistance 10-20 ohms
part_number Siemens 00624933
voltage_rating 240V AC

Common Questions

What does h04 error mean on Siemens Dishwasher?

The h04 error indicates the water hardness setting and is not a fault code.

Can I fix Siemens Dishwasher h04 error myself?

Yes, you can check and adjust the water hardness setting using your user manual.

How much does it cost to fix h04 error?

The cost varies by model and region, but H04 is not a technical fault requiring repair.

When should I call a technician for h04?

Call a technician if you see other error codes or if the dishwasher fails to operate normally.

Sources & References

Data last verified: 2026-01-25

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