What does the Ideal Faulty primary circuit fault code mean?

Your boiler has detected that water is not circulating properly through your heating system, so it has safely shut down to prevent damage.

How much does it cost to fix Ideal error code Faulty primary circuit?

Typical repair cost for the Ideal Faulty primary circuit fault is £120-250 including labour.

Check your boiler display for the water pressure gauge reading; it should be between 1.0 and 1.5 bar

Faulty primary circuit (no water or absence of flow)

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Almost always a stuck diverter valve on combis.

Each noise points to a different fault.

Sludge build-up — needs flushing, not bleeding.