Remeha
Condensate leakage from flue
Boiler flue drips water externally or shows staining on the wall
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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 gradient, Failed flue joint seals, Cracked flue elbow or terminal, Blocked condensate drain from flue collector
How to Fix / Troubleshooting
Safety first: Flue systems are safety-critical. Do not dismantle the flue yourself. Turn off the boiler if you suspect flue damage.
- Observe flue during operation: Look for water dripping from joints or the terminal and for white staining on the wall.
- Check condensate drain: Ensure the condensate pipe is not blocked, causing condensate to back up into the flue collector.
- Engineer tasks: Inspect and reassemble the flue with new seals if required, correct the flue gradient, clear any internal condensate drains, and perform a flue integrity test.
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Repair Difficulty
Professional Required
5/5
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