Your boiler has detected an electrical fault with its temperature sensor, which means it cannot accurately monitor the water temperature and has shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: NTC flow sensor short circuit
What causes this fault?
This fault occurs when the boiler's control board receives an incorrect electrical signal from the main temperature sensor, indicating the circuit has been bridged or 'shorted'. The most common reason is that the internal components of the sensor have failed due to age, or moisture has compromised the wiring connections.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like E32 — no call-out fees, no surprises.
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Remeha Avanta 18V is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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