S.61
FAULT CODE
Vaillant
Gas Family Check Unsuccessful
Medium Severity
Engineer Required
Status code: The boiler has run an automatic gas family check and the result was outside expected parameters. This can indicate an issue with gas supply pressure or combustion settings.
Step-by-Step Fix Guide
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Step 1
Reset the boiler once
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Step 2 Engineer only
If S.61 persists, a Gas Safe engineer should carry out a combustion analysis and check gas supply pressure
Gas Safe Reminder
Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.