What does the Johnson Starley Error 01 fault code mean?

Your heater is trying to turn on but cannot light the burner, meaning your heating will not work until the system is reset or repaired.

How much does it cost to fix Johnson Starley error code Error 01?

Typical repair cost for the Johnson Starley Error 01 fault is £120-350 including labour.

Check that your gas meter has credit and the isolation valve is open

Burner fails to ignite within 4 minutes (requires RESET)

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.

7 signs repair isn't worth it anymore.