F24
FAULT CODE
Heatline
Water Circulation Fault
Medium Severity
Engineer Required
The boiler has detected insufficient water circulation. Isolation valves may be closed or the pump may be failing.
Step-by-Step Fix Guide
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Step 1
Check all isolation and radiator valves are fully open
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Step 2
Reset once
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Step 3 Engineer only
Call a Gas Safe engineer to test the pump
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.