High
INSUFFICIENT WATER FLOW on Chaffoteaux Corvec 28 OF BF

Your boiler is struggling to detect enough water flowing through it to safely start your hot water.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

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

What the manual says

Manufacturer manual

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

From this model's manual
Verified against the Chaffoteaux Corvec 28 Of Bf installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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