Bosch
Solution Valve Not Sealing
Unit drips solution from nozzle when not pressing trigger
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Possible Causes
Worn solution valve seal, Debris in valve seat, Sticking trigger mechanism, Overfilled solution tank causing excess pressure
How to Fix / Troubleshooting
Safety first: Unplug the unit and empty the solution tank before working on the valve.
- 1. Check fill level
- Ensure the clean water/solution tank is not filled above the maximum mark.
- 2. Clean solution valve
- Remove the tank and locate the outlet valve and corresponding inlet on the machine.
- Rinse both with warm water to remove detergent residue.
- Inspect the rubber seal for damage; replace if worn.
- 3. Inspect trigger and internal valve
- Access the internal solution valve actuated by the trigger.
- Check for debris preventing full closure and clean as needed.
- If the valve spring is weak or seal damaged, replace the valve assembly.
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Repair Difficulty
Easy
2/5
Required Part
Solution Valve Assembly
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