Medium
07 on Saunier Duval Themaclassic Plus F30E

Your boiler is struggling to detect the temperature of the water it is trying to heat for your taps and shower, so it has turned off that function to prevent any issues.

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

Domestic hot water NTC fault

Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s 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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Avoid the next call-out bill

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Related fault codes

All 38 fault codes on the Themaclassic Plus F30E

Seeing a different code? Every code this model can display, in one place.

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