What does the Remeha E7 fault code mean?

Your boiler has sensed that the water inside it is heating up much faster than it is supposed to, causing it to shut down to prevent damage.

How much does it cost to fix Remeha error code E7?

Typical repair cost for the Remeha E7 fault is £150-350 including labour.

Temperature increase (dT/dt) too fast

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.