127
FAULT CODE
Baxi
Legionella Protection Temperature Not Reached
Low Severity
Engineer Required
The boiler attempted a legionella prevention cycle (periodic high-temperature DHW heating) but could not reach the required temperature.
Step-by-Step Fix Guide
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Step 1
This is usually a programming or system issue
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Step 2 Engineer only
Call a Gas Safe engineer to check DHW system temperature settings and the immersion/heat exchanger performance
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.