High
E46 on Ravenheat 120

Your boiler has lost track of its internal water pressure, meaning it cannot confirm if it is safe to run and has likely stopped working as a result.

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

Water pressure sensor error – could be open or short

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

E04View →E05View →E21View →

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