Boiler shows H19, often associated with condensate or siphon issues.

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

Blocked condensate trap, Incorrectly fitted condensate siphon, Blocked condensate pipe, Siphon not primed

Safety first: Switch off power before removing the condensate trap. Water may spill when removing it.

Check external pipe: Ensure the external condensate pipe is not blocked or frozen.
Engineer tasks: An engineer should remove and clean the condensate trap, ensure the siphon is correctly assembled and primed with water, and verify correct fall on the condensate pipe.

Medium 3/5

Condensate Trap / Siphon

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