E18
Bosch
Drain Timeout Fault
Washer-dryer does not drain within expected time; E18 displayed
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Partially blocked drain pump filter, Obstructed drain hose or standpipe, Weak drain pump, Siphoning due to incorrect drain hose height
How to Fix / Troubleshooting
Safety first: Unplug the appliance and prepare for water spillage.
- 1. Clean pump filter: Open the lower service flap, drain residual water, and remove the pump filter. Clean thoroughly as described in E03.
- 2. Check drain hose routing: Ensure the drain hose is installed at the correct height (usually 60–100 cm) and not inserted too far into the standpipe, which can cause siphoning.
- 3. Inspect hose for blockages: Detach the hose from the standpipe or sink and flush with water to clear any clogs.
- 4. Test pump: Run a drain-only program and listen for the pump. If it is noisy, weak, or intermittent, the pump may be failing and should be replaced.
- 5. If E18 persists: A technician should check for internal blockages in the tub-to-pump hose and verify pump voltage from the control board.
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Repair Difficulty
Medium
3/5
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