High
1073 on Worcester Bosch 1000

Your boiler has detected a faulty electrical signal regarding how hot the water is inside the system and has stopped working to prevent damage.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Short circuit of the flow temperature sensor

What causes this fault?

Sensor electrical fault

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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Related fault codes

1074View →

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