No Hot Water or Heating? FIX Worcester CDI Fault 227 (EASY GUIDE!) 

Is your Worcester CDI boiler throwing a frustrating Fault 227 error, leaving you without hot water or heating? Don't despair! In this EASY-TO-FOLLOW guide, we'll walk you through the EXACT steps
Replacing the combi's expansion vessel Schrader valve, PRV, recharging the vessel, and cleaning the condensate trap.
Clear Instructions: Step-by-step guidance with easy-to-understand explanations.
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