227 V
FAULT CODE
Worcester Bosch
No Flame Signal (8000 Series Lockout)
Medium Severity
DIY Check Possible
On 8000 Series boilers, code 227 V is a lockout (V = lockout) for no flame signal after ignition. The most common 8000 Series fault code.
Cold Weather Note
227 V in winter almost always means a frozen condensate pipe. Thaw with warm water before resetting.
Step-by-Step Fix Guide
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Step 1
Check gas supply — try other gas appliances
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Step 2
In cold weather check and thaw the condensate pipe
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Step 3
Press the reset button and hold for 3 seconds
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Step 4
If fault persists, 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.