E83
FAULT CODE
Baxi
Flow/Return Differential Error
Medium Severity
Engineer Required
The temperature difference between the flow and return is outside the expected range. This usually indicates a circulation problem.
Step-by-Step Fix Guide
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Step 1
Check the system pressure and repressurise if low
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Step 2
Bleed all radiators to release trapped air
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Step 3 Engineer only
If the problem persists, a Gas Safe engineer should check for a faulty pump, blocked heat exchanger, or closed valves
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.