E180
FAULT CODE
Baxi
Water Hammer / Circulation Noise
Medium Severity
Engineer Required
Noise from water circulation — kettling, banging or hammering sounds — indicating scale buildup on the heat exchanger or poor circulation.
Step-by-Step Fix Guide
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Step 1
A Gas Safe engineer should assess for scale buildup on the heat exchanger
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Step 2
A powerflush may be required to clean the system
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Step 3 Engineer only
Adding a scale inhibitor during the next service can prevent recurrence
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.