Machine drains immediately after filling, never reaching proper water level, no error code.

Safety: Turn off power and water before adjusting plumbing.

• Correct hose height: Ensure the drain hose rises to the manufacturer-specified height behind the machine before going down to the drain.
• Add anti-siphon loop: Create a high loop in the hose or install an anti-siphon device if required.
• Check non-return valve: Inspect and clean or replace any check valve in the drain line.
• Use proper standpipe or air gap: Avoid direct connection to floor drains without an air break.