High
Flash On Flash on Baxi 130 HE (range)

Your boiler has detected an internal communication failure between its electronic control board and the main wiring system.

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

LV Wiring Harness Ensure 8-way PCB connector securely pushed in. If fault persists replace LV wiring harness. / PCB Fault Replace PCB.

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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