BoilerBuddy · Alpha guide

Alpha boiler fault codes and symptoms

BoilerBuddy helps you diagnose boiler problems, work through minor checks, and escalate major problems to a Gas Safe engineer. Start with the exact code and range shown on your appliance; meanings can differ between models.

From the fault-code directory

Common Alpha codes and symptoms

These examples link to existing records for their specific boiler ranges. Open the matching record for its full context and guidance.

  • E-Tec 28/33

    Code 10: 10

    Code 10 indicates that primary system pressure is low.

  • E-Tec 28/33

    Code 75: 75

    Return/flow sensor fault — possible failure of one or both sensors.

  • E-Tec 28/33

    Code 76: 76

    Return/flow sensor fault — possible failure of one or both sensors.

  • E-Tec 28/33

    Code 01: 01

    Code 01 indicates ignition failure.