Emergency
117 on Baxi 124 Combi

Your boiler has switched off because there is too much water pressure in the system, which can put unnecessary strain on the internal seals and components.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

Primary System Water Pressure Too High

From this model's manual
Verified against the Baxi 124 Combi Combi 2 installation & service manual, page 46.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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