Hitachi Washing Machine Error C01

⚡ Quick Answer: The Hitachi Washing Machine C01 error indicates a water supply issue, often due to a closed tap or clogged inlet filter. Symptoms include the display ... ✅ DIY Fixable

What Does Error C01 Mean?

The Hitachi Washing Machine C01 error indicates a water supply issue, often due to a closed tap or clogged inlet filter. Symptoms include the display showing 'C01' and the machine failing to fill with water. This can also occur if the inlet hose is kinked or if there is an internal valve malfunction.

Common Symptoms:

  • Display shows "C01" and/or "æ°´æ “é–‹ç¢ºèª" (check water tap) message when starting a wash
  • Washing machine does not fill with water or takes unusually long to fill
  • Machine may immediately drain without filling

Possible Causes

  • Water tap is closed or water supply is unavailable (high)
  • Clogged or dirty inlet filter at the water supply connection (high)
  • Kinked, frozen, or blocked inlet hose/line (medium)
  • Inlet valve failure or internal water valve malfunction (medium)

How to Fix Error C01

DIY Fix Check basic water supply and filters

  1. Ensure the household water tap connected to the washing machine is fully open.
  2. Check for any water supply interruption from the building or municipal service.
  3. Turn off water and power, disconnect the inlet hose, and inspect the inlet filter for debris; clean the filter and reattach.
  4. Straighten any kinks in the inlet hose and ensure it is not frozen or blocked.

Technician Only Inspect and possibly replace inlet valve or internal components

  1. Use diagnostic tools to verify inlet valve operation and continuity.
  2. Check water pressure switch and related sensors for proper operation.
  3. Replace defective inlet valve or associated water control components as needed.

Parts needed: Water inlet valve, Water level sensor (if applicable), Associated seals and connectors

🛑 When to Call a Pro:
  • If after all user‑level checks (tap open, filter cleaned, hose unobstructed) the C01 error persists
  • If there is visible leakage, unusual noises, or inability to get water into the drum despite good supply

Technical Specifications

wattage 5W
component Door Lock Assembly
resistance 0-5 ohms
part_number HITACHI 400005
voltage_rating 240V AC

Common Questions

What does C01 error mean on Hitachi Washing Machine?

C01 indicates a water supply problem, often involving a closed tap or clogged filter.

Can I fix Hitachi Washing Machine C01 error myself?

Yes, check the water tap, clean the inlet filter, and ensure hoses are unobstructed.

How much does it cost to fix C01 error?

Repair costs range from ¥5,000 to ¥20,000+, depending on parts and labor.

When should I call a technician for C01?

Call a technician if the error persists after checking the tap and filter or if there's leakage.

Data last verified: 2026-07-01

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