E109
FAULT CODE
Baxi
Pre-Heating Circuit Fault
Medium Severity
Engineer Required
A fault has been detected in the pre-heating circuit. This affects the boiler's ability to provide quick hot water response.
Step-by-Step Fix Guide
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Step 1
Try resetting the boiler
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Step 2
If the fault persists, a Gas Safe engineer will need to check the pre-heat circuit components
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Step 3 Engineer only
The diverter valve or NTC sensors may need testing
Gas Safe Reminder
Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.