Baxi · Duo-tec Combi
E110 boiler fault code
Duo-tec Combi
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What E110 means
E110 indicates the boiler maximum temperature was exceeded for the temperature gradient, with a probable jammed pump or air in the circuit; the safety thermostat sensor has tripped.
Safe check
Record the displayed code. This fault requires engineer attention.
When to contact an engineer
Arrange diagnosis by 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 Professional error-code page · Other tab · Duo-tec Combi listing · E110 row
professional error-code table
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