Worcester Bosch Condensate Leakage from Flue

Boiler flue dripping water externally or staining the wall.

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

Incorrect flue slope, Failed flue seals, Blocked condensate trap causing backup, Condensate joint not glued or sealed

Safety first: Flue work must be carried out by a competent, registered engineer.

Engineer actions:

Inspect the flue system for correct fall back to the boiler so condensate drains to the trap.
Check all flue joints and seals for integrity; replace any damaged seals or sections.
Ensure the condensate trap and pipework are clear and correctly connected.
Seal any condensate joints with appropriate solvent weld or seals as specified by Worcester Bosch.

Hard 4/5

Flue Kit and Condensate Trap

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