Medium
Flashing 70 on Heatline Capriz 25/28

Your boiler's hot water sensor has detected a fault, meaning you may experience inconsistent water temperatures or no hot water at all.

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.

What the manual says

Manufacturer manual

Fault on DHW sensor

From this model's manual
Verified against the Capriz 25 Capriz 28 installation & service manual.
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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

Flashing 80View →Flashing 60View →

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