15
FAULT CODE
Alpha
Internal Wiring Error
High Severity
Engineer Required
An incorrect wiring configuration has been detected internally. Usually only occurs after maintenance or installation work.
Step-by-Step Fix Guide
-
Step 1 Engineer only
The engineer who last worked on the boiler should check all internal wiring connections to the PCB
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.