E9 220 High

Worcester Bosch E9 220 Fault Code

Also written as E9220 — same fault.

The Worcester Bosch E9 220 fault code means: your boiler has shut down because a safety sensor has detected that the water inside has become dangerously hot or the sensor itself has developed a fault.. It appears on 10 Worcester Bosch models in our database.

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: The contacts for the safety temperature sensor have shorted or the safety temperature sensor has detected a temperature higher than 130°c
Typical repair cost £120-£240 (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 E9 220 fault code

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

Source

Worcester Bosch E9 220 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