Ravenheat CSI Fault codes & diagnostics

1 fault code with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

System Natural Gas 80-120 1997-2002 Discontinued
GC Numbers 47-581-0247-581-03
Download the Ravenheat CSI manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Fault codes

All 1 documented codes

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lockout

Your boiler has detected that it is getting too hot and has safely switched itself off to prevent damage.

High Engineer only £120-250 Shared across the range

Parts commonly replaced

  • Overheat thermostat
  • Central heating pump
  • Diverter valve
  • PCB
Full explanation for lockout
Status & diagnostic codes

1 operating states & engineer diagnostics

Not faults — these are normal operating states. Tap to expand.

F1 Diagnostic Your boiler has detected an issue with the airflow system, which prevents it from safely burning gas and has caused it to shut down to protect your home.