Medium
E28 on Baxi Platinum Combi HE

Your boiler is struggling to accurately measure your hot water temperature because a sensor is faulty.

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

Hot Water NTC Fault

Shared across the Platinum 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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Related fault codes

All 9 fault codes on the Platinum Combi HE

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

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