What does the Halstead Overheat LED fault code mean?

Your boiler has detected that it is running too hot and has automatically shut itself down to prevent any damage or safety hazards.

How much does it cost to fix Halstead error code Overheat LED?

Typical repair cost for the Halstead Overheat LED fault is £120-250 including labour.

Overheat situation. Possible causes: Lack of water, Lack of water flow, Faulty overheat thermostat

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

Each noise points to a different fault.

Almost always a stuck diverter valve on combis.

Work through these before the call-out.