Worcester Bosch Flue Terminal Affected by Wind / Pressure Fluctuations

Boiler locks out occasionally when it is very windy outside.

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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

Incorrect flue terminal location, Inadequate flue support, Wind blowing directly into terminal, Flue seals not tight

How to Fix / Troubleshooting

Safety first: Flue modifications must be done by a registered engineer.

Engineer actions:

  • Inspect the flue terminal location relative to prevailing winds and nearby structures.
  • Ensure all flue joints and seals are tight and that the flue is adequately supported.
  • Consider fitting a flue terminal guard or deflector approved by Worcester Bosch if wind effects are significant.
  • Verify combustion settings with a flue gas analyser after any flue work.
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Repair Difficulty

Hard 4/5

Required Part

Flue Terminal
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