What does the Vokera E091 fault code mean?

Your boiler has detected that the main part responsible for heating your water is becoming blocked or inefficient and needs a professional service.

How much does it cost to fix Vokera error code E091?

Typical repair cost for the Vokera E091 fault is £120-£350 including labour.

Clean primary heat exchanger

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.