49
FAULT CODE
Alpha
Return Sensor High Temperature
Medium Severity
Engineer Required
The return sensor has detected an unusually high temperature on the heat exchanger return circuit, indicating poor circulation.
Step-by-Step Fix Guide
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Step 1
Check system pressure and bleed radiators
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Step 2
Ensure all valves are open
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Step 3 Engineer only
If fault persists, call a Gas Safe engineer to check circulation
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.