Medium
S.28 on Heatline Monza

Your boiler has temporarily stopped heating your hot water cylinder because it has reached its safety limit after a long heating session.

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.

Technical description

The boiler blocks tank reheating after a reheating cycle.

Engineer required

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

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Related fault codes

S.27View →

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