Bosch Restricted Steam / Hot Water Flow

Steam or hot water output is weak or intermittent.

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.

Possible Causes

Scale in steam thermoblock, Blocked steam nozzle, Partially blocked hydraulic lines, Weak pump

Safety first: Unplug and allow the machine to cool before working on the steam nozzle.

Clean steam nozzle: Remove the tip and soak in warm water. Use a pin to clear any blocked holes.
Descale the machine: Run a full descaling cycle, paying attention to prompts for steam/hot water outlets.
Run multiple hot water cycles: After descaling, run several hot water draws to flush remaining scale.
If flow remains weak: The pump or steam thermoblock may be partially blocked or failing; professional service is recommended.

Medium 3/5

Steam Nozzle / Thermoblock

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