Medium
P.04 on Vaillant ecoTEC exclusive

Your boiler has entered a configuration mode that resets its internal central heating settings back to their original factory defaults.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Reset eGas CH (Central Heating) check programme: Calling up the programme deletes all of the CH corr

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

P.00View →F.70View →

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