High
D.75 on Vaillant Combi Compact 282EB

Your boiler is taking too long to heat up the internal hot water storage tank, which often means heat isn't transferring properly.

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

Maximum charging time for a storage without own controller

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.20View →F.24View →D.72View →

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