What does the Grant Overheat thermostat trip fault code mean?

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

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

Typical repair cost for the Grant Overheat thermostat trip fault is £120-250 including labour.

Boiler will not start/Boiler operating on overheat thermostat. Check the boiler and overheat thermostat; reset if necessary.

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.

Sludge build-up — needs flushing, not bleeding.

Work through these before the call-out.