How much does it cost to fix Worcester Bosch error code 1027?

Typical repair cost for the Worcester Bosch 1027 fault is £120-200 including labour.

1027 Low

Worcester Bosch 1027 Fault Code

Q: What does the Worcester Bosch 1027 fault code mean?

Your boiler has lost the connection to a sensor responsible for monitoring the temperature of your hot water supply, which may affect its ability to keep hot water ready for instant use.

The Worcester Bosch 1027 fault code means: your boiler has lost the connection to a sensor responsible for monitoring the temperature of your hot water supply, which may affect its ability to keep hot water ready for instant use.. It appears on 5 Worcester Bosch models in our database.

Technical description: DHW pre-heat kit inlet sensor is disconnected

Typical repair cost £120-200 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Worcester Bosch models that show the 1027 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Worcester Bosch 1027 fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026