13 High

Johnson Starley 13 Fault Code

The Johnson Starley 13 fault code means: your boiler has disabled the reset button because it was pressed too many times in a short period, likely due to an underlying fault causing repeated lockouts.. It appears on 10 Johnson Starley models 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: Remote reset lockout. Exceeded 5 remote resets per hour.
Typical repair cost £90-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Johnson Starley models that show the 13 fault code

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

Source

Johnson Starley 13 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