Washer-dryer does not detect water level correctly; may not start spin or may stop mid-cycle with E10.

Safety first: Unplug the appliance. Avoid blowing too hard into pressure components to prevent damage.

Step-by-step checks:

• Inspect pressure hose: Remove the top cover. Locate the thin hose from the tub air chamber to the pressure sensor. Ensure it is firmly attached at both ends and not split or kinked.
• Clean air trap: At the tub connection, remove the hose and inspect the air trap for detergent sludge. Clean thoroughly with hot water and a brush.
• Test the pressure sensor: If your Candy model uses an analog sensor, check its output voltage (requires service manual and live testing). For simple switches, test continuity while gently applying pressure.
• Check wiring: Inspect the harness from the sensor to the PCB for damage or loose connectors. Reseat all plugs.
• Reassemble and test: Run a rinse and spin cycle to confirm correct water level detection and spinning.

When to call a technician: If the sensor and hose are fine but E10 persists, the main PCB input circuit may be defective and needs professional diagnosis.