BoilerFaultCodesYour boiler has lost contact with its outdoor thermometer, so it is running at a pre-set steady temperature to keep your home warm while it ignores external weather changes.
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 temp. sensor faulty - heating back-up operation active
What causes this fault?
This fault occurs when the boiler's control board can no longer detect a signal from the sensor located on the outside of your home. The most common reasons are that the external sensor has developed an electrical fault due to moisture ingress, or the thin wiring connecting it to the boiler has become damaged or disconnected.
This fault often comes to light during autumn or winter when the boiler first attempts to use weather data to adjust your heating for the colder weather.
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 — no call-out fees, no surprises.
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