The Baxi A.02.76 code means “Internal memory reserved for full customisation of settings. No further changes can be made.” The boiler has reached the limit of the memory area used for customised settings. This is a technical configuration message, not a prompt to clear files or reset the boiler yourself.
Record the exact code and full boiler model. Note whether heating and hot water still operate, then avoid installer menus, factory resets and further setting changes. A persistent A.02.76 message needs professional attention.
What does Baxi A.02.76 mean?
Baxi’s current fault table says the internal memory reserved for full customisation of settings has no room for further changes. In plain English, the part of the control system used to store customised settings has reached its intended limit.
The code does not mean the boiler contains ordinary documents or app data that a homeowner can delete. It also does not tell you which settings are stored, why the limit was reached or whether a control component has failed. Those details require model-specific technical checks.
Which Baxi boilers can show A.02.76?
Baxi lists A.02.76 for Baxi 200, 400, 600 and 800 Combi 2 boilers, Baxi Assure 500 Combi 2, Baxi 600 and 800 System 2, and Baxi Assure 500 System 2. Do not assume the same wording applies to an older range or a different display.
Find the complete model name in the user guide, on installation paperwork or on an accessible external label. Keep the boiler casing closed.
What are customised boiler settings?
Boilers use configuration information to match the appliance and installed heating system. Some settings are intended for commissioning and service work rather than normal daily use. Baxi’s public description does not specify which customised settings have filled the reserved memory.
Your ordinary temperature and schedule choices are different from technical configuration. Turning the room thermostat down or changing a daily programme will not clear the internal customisation memory described by A.02.76.
Why has the settings memory become full?
The code may follow installation, commissioning, repeated technical changes, control-related work or replacement of a configured component. These are possible circumstances, not confirmed causes. The display alone cannot show who or what made the previous changes.
It would be unsafe to assume that the memory is damaged or that the main control board needs replacing. An engineer must review the exact appliance, its settings history and the appropriate technical information.
What can you safely check?
Useful homeowner observations include:
- Confirm the display reads A.02.76, including the dots and leading zero.
- Photograph the code and any message that appears with it.
- Record the full Baxi model.
- Note whether heating, hot water or both are affected.
- Note whether the code appeared after installation, servicing, controls work or a power interruption.
- Use only ordinary homeowner controls covered by the exact model’s user guide.
Do not keep making setting changes to test whether one is accepted. Preserve the current state and display information for the engineer.
Can you clear the memory yourself?
No. Do not try to delete settings, overwrite parameters or enter installer and commissioning menus. A factory reset can change the way the appliance is configured and is not a safe homeowner solution.
Do not copy settings from another boiler, even if it looks identical. Configuration can depend on the exact model and heating-system arrangement.
Can you reset Baxi A.02.76?
You may try the normal reset once if the official user guide for your precise model explains how. An everyday reset is not the same as clearing settings memory. If A.02.76 remains or returns, stop resetting and arrange a repair.
Repeated power cycling is unlikely to create more memory capacity and may remove useful information about when the message occurs.
Is A.02.76 dangerous?
Baxi’s published wording concerns settings memory, not a gas leak or carbon-monoxide alarm. However, a persistent configuration code should not be ignored or bypassed, and the boiler should never be opened by a homeowner.
If you smell gas, suspect carbon monoxide, feel unwell near the appliance or a carbon-monoxide alarm sounds, leave the property and follow current emergency guidance.
Who should fix A.02.76?
A suitably qualified Gas Safe registered engineer should investigate. They can confirm the model, review the configuration safely and decide what corrective work is appropriate. The code does not prove that a replacement PCB or control is required.
Need help with a Baxi A.02.76 message?
Book a fixed-price boiler repair aimed at fixing the fault, with the booking price clear before the visit.
Quick answers about Baxi A.02.76
What does A.02.76 mean?
The memory reserved for full customisation of settings is full, so no further changes can be made.
Is this the same as phone or app storage?
No. It refers to technical settings memory within the boiler’s control system.
Can I delete old settings?
No. Do not enter technical menus or try to clear memory yourself.
Should I perform a factory reset?
No. A factory reset can alter appliance configuration and is not a homeowner fix for this code.
Does A.02.76 prove the PCB is faulty?
No. The message describes a full settings-memory area but does not prove a particular component has failed.
What should I tell the engineer?
Provide the exact code, complete model, heating and hot-water status and details of any recent installation or controls work.