E19 High

Johnson Starley E19 Fault Code

The Johnson Starley E19 fault code means: your boiler has stopped working because waste water cannot leave the system, likely due to a full or faulty pump or a blocked drainage pipe.. It appears on 1 Johnson Starley model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Condensate pump failure or drain blocked
Typical repair cost £120-250 (including labour)

DIY fix possible

Check the external white plastic drainage pipe for any blockages or ice if it is cold outside.Ensure any visible condensate collection tanks are not full or overflowing.Gently pour warm water over the external pipe if you suspect it is frozen.

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Johnson Starley models that show the E19 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Johnson Starley E19 fault code information on this page is sourced and cross-checked against the official Johnson Starley service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026