Potterton
Condensate / Flue Drainage Issue
Boiler flue terminal dripping water or staining the wall 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 slope, Condensate not draining to trap, Flue joint leakage, Blocked condensate path
How to Fix / Troubleshooting
Safety first: Do not modify the flue yourself; this is a safety-critical component.
User checks:
- Observe whether dripping occurs only when the boiler is running.
- Check that the condensate pipe is not visibly blocked or frozen.
Engineer checks:
- Verify flue installation slope back to the boiler as per Potterton instructions.
- Inspect flue joints for leaks and reseal or replace sections as needed.
- Check condensate trap and pipework for blockages.
Correct flue and condensate installation is essential for safe condensing boiler operation.
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Repair Difficulty
Hard
4/5
Required Part
Flue Kit / Condensate Pipework
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