BoilerFaultCodesYour boiler has lost connection with its outdoor thermometer, meaning it might not adjust its heating efficiently based on the weather outside.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Outside temperature sensor is defective – check the connecting lead
What causes this fault?
This fault occurs when the boiler can no longer receive data from the sensor mounted on the outside of your home. The most common reasons are physical damage to the external unit from the elements or a break in the low-voltage wiring connecting the sensor to the boiler's main control board.
This fault is often identified during autumn or winter when the heating is first turned back on and the boiler attempts to use weather data to regulate the temperature.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like 1037 W — no call-out fees, no surprises.
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