BoilerFaultCodesWarmworld Blocked condensate pipework Fault Code
Also written as BLOCKEDCONDENSATEPIPEWORK — same fault.
The Warmworld Blocked condensate pipework fault code means: your boiler has switched itself off because the waste water pipe that carries away condensation is blocked or frozen, causing water to back up inside the unit.. It appears on 1 Warmworld model in our database.
Technical description: The boiler will automatically stop functioning via the blocked drain device in the syphon trap.
DIY fix possible
Locate the plastic pipe leading from the boiler to an outside drain.Check for any visible ice if the weather is freezing and gently thaw the pipe using a hot water bottle or warm (not boiling) water.Inspect the internal syphon trap under the boiler for any debris and carefully clear it if accessible.Reset the boiler once the blockage has been cleared.
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Warmworld models that show the Blocked condensate pipework fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Warmworld Blocked condensate pipework fault code information on this page is sourced and cross-checked against the official Warmworld service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026