227
FAULT CODE
Worcester Bosch
Ignition Lockout (Older CDi Models)
Medium Severity
DIY Check Possible
On older Worcester Greenstar CDi models, fault code 227 indicates ignition failure after multiple attempts.
Cold Weather Note
Code 227 in winter is most commonly a frozen condensate pipe.
Step-by-Step Fix Guide
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Step 1
Check gas supply is on
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Step 2
Check for frozen condensate pipe in cold weather
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Step 3
Thaw condensate with warm water if frozen
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Step 4
Press reset once
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Step 5
If fault returns, call a Gas Safe engineer
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.