High
1013 on Worcester Bosch Greenstar 8000 F GR8700iF 35 C

Your boiler has detected that the burner is running at its maximum capacity for too long, causing it to proactively shut down to prevent overheating.

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.

What the manual says

Manufacturer manual

Max. combustion point reached

From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Wb 47848 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 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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All 94 fault codes on the Greenstar 8000 F GR8700iF 35 C

Seeing a different code? Every code this model can display, in one place.

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