What does the Potterton NO OR LOW WATER FLOW RATE fault code mean?

Your boiler is struggling to detect enough water flowing through it, which is preventing your hot water from working correctly.

How much does it cost to fix Potterton error code NO OR LOW WATER FLOW RATE?

Typical repair cost for the Potterton NO OR LOW WATER FLOW RATE fault is £120-250 including labour.

1. Blocked water filter. 2. Heat exchanger blocked with lime. 3. Loss of service water main pressure.

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.