E125
FAULT CODE
Baxi
Circulation Fault (Primary)
Medium Severity
Engineer Required
Water is not circulating properly through the primary heating circuit. Usually caused by a faulty pump, airlocked system, or stuck pump bearing.
Step-by-Step Fix Guide
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Step 1
Check system pressure is correct
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Step 2
Bleed radiators to remove airlocks
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Step 3
Reset the boiler and listen for the pump
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Step 4 Engineer only
If no circulation sound is heard, the pump may have seized — call a Gas Safe engineer
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.