01
FAULT CODE
Ravenheat
Ignition Failure (CSI)
Medium Severity
DIY Check Possible
On Ravenheat CSI boilers, code 01 indicates the boiler has failed to ignite — check gas valve, fan, ignition control board and cables.
Cold Weather Note
Check condensate in cold weather.
Step-by-Step Fix Guide
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Step 1
Check gas supply
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Step 2
In cold weather, check for a frozen condensate drain
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Step 3
Reset once
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Step 4
Call a Gas Safe engineer if fault persists
Gas Safe Reminder
Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.