Medium
E28 on Baxi Platinum 24 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

From this model's manual
Verified against the Baxi/Baxi Platinum Combi He 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.

Find a Gas Safe engineer
Search the official register →

Avoid the next call-out bill

A cover plan would handle faults like E28: no call-out fees, no surprise bills.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related fault codes

All 12 fault codes on the Platinum 24 HE

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

Related guides you might find useful