How much does it cost to fix Johnson Starley error code ER 01 + RESET?

Typical repair cost for the Johnson Starley ER 01 + RESET fault is £120-280 including labour.

ER 01 + RESET High

Johnson Starley ER 01 + RESET Fault Code

Q: What does the Johnson Starley ER 01 + RESET fault code mean?

Your boiler has failed to light the gas burner after several attempts and has locked itself for safety.

Also written as ER01RESET — same fault.

The Johnson Starley ER 01 + RESET fault code means: your boiler has failed to light the gas burner after several attempts and has locked itself for safety.. It appears on 1 Johnson Starley model in our database.

Technical description: Ignition failure

Typical repair cost £120-280 (including labour)

DIY fix possible

Check if your gas supply is active by testing another gas appliance like a hob.Ensure your prepaid gas meter has sufficient credit.Press and hold the 'Reset' button for 3 seconds to attempt a restart.

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 ER 01 + RESET fault code

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

Warmcair DW Repair: £120-280

Source

Johnson Starley ER 01 + RESET 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