BoilerFaultCodesWhat the manual says
Manufacturer manualSensor S0 is defective.
From this model's manual
Verified against the Intergas Xclusive installation & service manual, page 63.
What causes this fault?
This fault occurs when the boiler's primary temperature sensor becomes unable to send an accurate electrical signal to the main control board. The most common reason is the internal thermistor failing due to age or heat stress, though it can also be caused by loose or damaged wiring connections inside the unit.
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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