Medium
100 on Worcester Bosch 537i

Your boiler is displaying a status code related to its internal heat output settings rather than a functional fault, indicating it may not be configured correctly for your home's setup.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Heat output 30.2 kW / Heat input 30.5 kW (RD532i L.P.G) or Heat output 37.1 kW / Heat input 37.5 kW (RD537i L.P.G)

From this model's manual
Verified against the Worcester Bosch 537i installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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