High
Section F on Alpha 240XE

Your boiler is failing to light the burner, meaning it cannot produce heat or hot water because of a potential electrical or sensor issue.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

240 V at gas valve and across PCB terminals 5, 6; or Gas at burner; or DHW/Primary temp. sensor faulty; or Ignition PCB problem

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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