Schulthess Water level sensing / siphoning issue

Washer fills and drains repeatedly without progressing in the program.

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Possible Causes

Drain hose installed too low causing siphoning, Faulty pressure sensor, Blocked pressure hose, Software misinterpretation of level

How to Fix / Troubleshooting

Safety first: Unplug the washer before adjusting hoses.

  • Step 1 – Check drain hose height: Ensure the drain hose is installed at the height specified in the manual (usually 60–100 cm above floor). If too low, water can siphon out, causing repeated fills.
  • Step 2 – Secure hose: Fix the hose securely to prevent it from slipping down.
  • Step 3 – Clean pressure hose: Inspect and clear the pressure hose and chamber of detergent residue.
  • Step 4 – Replace pressure sensor: If the sensor does not correctly detect water levels, replace it.
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Repair Difficulty

Easy 2/5

Required Part

Pressure Sensor
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