Ferroli Atlas A Fault codes & diagnostics

2 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

Regular Oil 30-55 kW 2008-2016 Discontinued

Replaced by: Atlas D

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Fault codes

All 2 documented codes

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A

Your boiler has temporarily stopped working because a safety sensor has detected an issue with the burner.

High Engineer only £100-£250

Parts commonly replaced

  • Control board
  • Flame detector
  • Ignition transformer

Related codes

Full explanation for A
B

Your boiler has automatically shut down because the internal water temperature reached an unsafe level.

Emergency Engineer only £150-300

Parts commonly replaced

  • Safety thermostat
  • NTC thermistor
  • Circulating pump

Related codes

Full explanation for B