High
Complaints of noise on Chaffoteaux Flexiflame 140

Your boiler is making unusual noises because of trapped air, poor water circulation, or potential issues with the gas control components.

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.

Technical description

1. Over-gassed. 2. Air in system. 3. Boiler thermostat wrongly set or faulty. 4. Water section spindle sticking. 5. Gas valve sticking open. 6. Dirt/swarf on gas valve facing. 7. Insufficient water flow. 8. Pump noise or vibrating. 9. Heat exchanger partially blocked.

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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