High
F.6 on Vaillant Combi Compact 282EB

Your boiler's internal temperature sensor has stopped working correctly, meaning the system cannot accurately monitor the heat of the water leaving the unit.

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

Your flow NTC has developed a fault.

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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Related fault codes

F.1View →F.5View →

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