Medium
Er.14 on Vaillant Turbomax Pro 28 2E

Your boiler is struggling to detect the correct water pressure needed to run, likely due to a faulty sensor reading.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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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

Pressure gauge

Engineer required

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

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