BoilerFaultCodesTechnical description
Outside sensor short circuit
What causes this fault?
This fault occurs when the boiler can no longer receive a clear signal from the sensor located on your outside wall. The most common reasons are water getting into the sensor housing, or the electrical wiring becoming damaged or corroded due to exposure to the elements. Without this data, the boiler cannot automatically adjust its temperature based on how cold it is outside.
This issue often surfaces during periods of heavy rain or high winds, which can force moisture into the sensor casing or damage external cabling.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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