High
164 on Baxi Assure

Your boiler has detected a problem with how it monitors water pressure or flow, which is preventing the system from heating up correctly.

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

Pressure Sensor Error (UK) – Heating flow switch error (Ireland)

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

E117View →E118View →E119View →

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