What does the Worcester Bosch 2963 B fault code mean?

Your boiler has detected that its internal temperature sensors are sending an unusual signal, likely due to a loose connection or a faulty sensor.

How much does it cost to fix Worcester Bosch error code 2963 B?

Typical repair cost for the Worcester Bosch 2963 B fault is £90-180 including labour.

Signal from flow and heat exchanger temperature sensor outside the permissible range – the connecting lead needs connecting correctly

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.

Safety-critical — turn off, read this.