Baxi · Assure 500 Combi 2

A.00.28 boiler fault code

Assure 500 Combi 2

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What A.00.28 means

Solar temperature sensor is either removed or measures a temperature below range.

Gas Safe engineer: Note the code shown on the display. Do not open, adjust or repeatedly reset the boiler. Contact a Gas Safe registered engineer.

A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, or someone has possible carbon-monoxide symptoms, leave and call 0800 111 999 from outside.

Renting? Report it to your landlord or housing provider first. They are responsible for gas safety and boiler repairs, and the repair should not cost you.

Safe check

Note the code shown on the display. Do not open, adjust or repeatedly reset the boiler. Contact a Gas Safe registered engineer.

When to contact an engineer

Note the code shown on the display. Do not open, adjust or repeatedly reset the boiler. Contact a Gas Safe registered engineer.

Source and provenance

Baxi Assure 500 Combi 2 Installation & Service Manual 7875578-02 · §11.2 Error codes, List of temporary faults, printed p. 50
installation and service instructions
7875578-02 (07/24)