What does the Grant Overheat fault code mean?

Your boiler has become too hot and has automatically shut itself down to prevent damage or safety issues.

How much does it cost to fix Grant error code Overheat?

Typical repair cost for the Grant Overheat fault is £100-220 including labour.

Allow the boiler to cool down for at least 20 minutes.

Control malfunction causing overheating. Safety overheat thermostat automatically switches off the boiler.

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.

Work through these before the call-out.

Lockout fault with a reset-needed pattern.