What does the Worcester Bosch Hot water high limit stat fault code mean?

Your boiler has detected that it is running much hotter than it should be and has automatically shut itself down to prevent damage.

Worcester Bosch Hot water high limit stat Fault Code: What It Means & How to Fix It

Typical repair cost for the Worcester Bosch Hot water high limit stat fault is £150-300 including labour.

Tripped. Investigate cause of overheating and/or replace.

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.

Sludge build-up — needs flushing, not bleeding.