BoilerFaultCodesTechnical description
Ambient temperature sensor failure
What causes this fault?
This fault occurs when the boiler's control system loses communication with the sensor that monitors the temperature of the air inside the casing. The most common reason is that the sensor has developed a physical defect or the wiring connecting it to the main control board has become loose or damaged.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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