BoilerFaultCodesYour boiler's temperature sensors for the hot water storage tank are sending incorrect signals, preventing the system from heating your water correctly.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Immersion NTC Sensors
What causes this fault?
This fault occurs when the boiler receives conflicting or impossible temperature readings from the sensors inside your hot water storage tank. The most common reason is that the internal electrical components of the sensor have degraded over time or the wiring connecting them to the main control board has become loose or damaged.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like E83483 — no call-out fees, no surprises.
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