Baxi · 400 Combi 2.1
E.04.08 boiler fault code
400 Combi 2.1
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What E.04.08 means
Maximum safe temperature value reached
Safe check
Note the code shown on the display. Do not open, adjust or repeatedly reset the boiler. Contact a Gas Safe registered engineer. You can try one reset using the boiler's reset button. If the code returns or won't clear, contact a Gas Safe registered engineer.
When to contact an engineer
You can try one reset using the boiler's reset button. If the code returns or won't clear, contact a Gas Safe registered engineer.
Safety notice
A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, anyone feels unwell, or there is an unsafe flame, leave and call 0800 111 999 from outside.
Source and provenance
- Baxi 400 Combi 2.1 Install & Service Manual · §11.1 p. 49 and §11.2 p. 53
installation and service manual
Document 7875578-02
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.
Did this fix it?
After: Reset the boiler once