12
FAULT CODE
Alpha
Cylinder Sensor Fault (FlowSmart)
Medium Severity
Engineer Required
The cylinder temperature sensor has a wiring fault or has failed. Relevant on FlowSmart system boilers with a cylinder.
Step-by-Step Fix Guide
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Step 1 Engineer only
Call a Gas Safe engineer to inspect and replace the cylinder sensor
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.