BoilerFaultCodes.com
INSUFFICIENT WATER FLOW High

Your boiler is struggling to detect enough water flowing through it to safely turn on your hot water taps.

Call an engineer soon

Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: I) Water service tap partly closed; II) Blocked venturi; III) Low water pressure; IV) Water governor faulty; V) Water governor sticking; VI) Foreign matter in water section
Typical repair cost £120-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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