What does the Grant Overheat thermostat 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 thermostat?

Typical repair cost for the Grant Overheat thermostat fault is £90-180 including labour.

Identify the black reset button cover on the control panel

Safety device that may require resetting if the boiler exceeds temperature limits.

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.