What does the Halstead LED 1-2-3-4 (◯◯◯●) fault code mean?

Your boiler has detected that the water inside it has become dangerously hot and has shut itself down to prevent damage or safety issues.

How much does it cost to fix Halstead error code LED 1-2-3-4 (◯◯◯●)?

Typical repair cost for the Halstead LED 1-2-3-4 (◯◯◯●) fault is £120-250 including labour.

Overheated appliance - Water temperature greater than 105 °C

This is a emergency 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.

Sludge build-up — needs flushing, not bleeding.

Safety-critical — turn off, read this.