What does the Worcester Bosch Failure at point Q fault code mean?

Your boiler's internal pump is staying on even after the water has cooled down, which is usually caused by a faulty internal sensor.

How much does it cost to fix Worcester Bosch error code Failure at point Q?

Typical repair cost for the Worcester Bosch Failure at point Q fault is £120-190 including labour.

Pump Overrun Test: Pump does not stop when primary temperature drops below 60°C. Replace pump overrun thermostat.

This fault requires 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.

Safety-critical — turn off, read this.