E40
FAULT CODE
Baxi
Return Temperature Sensor Fault
Medium Severity
Engineer Required
The return water temperature NTC sensor has developed a fault. It may have an open circuit or be reading incorrectly.
Step-by-Step Fix Guide
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Step 1
A Gas Safe engineer will need to test the return NTC sensor
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Step 2
The sensor or its wiring may need replacing
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Step 3 Engineer only
This is typically an inexpensive repair
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.