E84
FAULT CODE
Baxi
Flow/Return Sensor Implausible
Medium Severity
Engineer Required
The flow and return temperature sensors are giving readings that are logically impossible, such as the return being hotter than the flow.
Step-by-Step Fix Guide
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Step 1
The sensors may have been fitted to the wrong pipes
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Step 2
A Gas Safe engineer will need to verify the sensor positions and test them
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Step 3 Engineer only
One or both sensors may need replacing
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.