What does the Worcester Bosch 338 fault code mean?

Your boiler has repeatedly tried to start but failed to detect water movement, so it has locked itself out to prevent internal damage.

How much does it cost to fix Worcester Bosch error code 338?

Typical repair cost for the Worcester Bosch 338 fault is £150-300 including labour.

Too many short burner starts without confirmation Reset button There is an error where the pump is not detecting water.

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.

Almost always a stuck diverter valve on combis.

Sludge build-up — needs flushing, not bleeding.