BoilerFaultCodes.com
E32 High Lockout

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.

Call an engineer soon

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.

Typical repair cost £100-£180 (including labour)

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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Protect yourself from future repair bills

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