BoilerFaultCodesTechnical description
Outside temperature sensor not connected: Outside temperature sensor not recognised.
What causes this fault?
This fault occurs when the boiler's main control board can no longer detect a signal from the sensor located on the outside of your home. The most common reasons are a break in the wiring connecting the sensor to the boiler, or the external sensor itself failing due to exposure to the elements.
This fault is often noticed during the transition into autumn or winter when the boiler first attempts to use external temperature data to regulate the heating.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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