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Ariston Fault Codes

Select a fault code to see its meaning, common causes and how to fix it.

• 101 Fault code 101 on an Ariston boiler indicates that the central heating circuit has reached a dangerously high… Read more →
• 108 Fault code 108 on an Ariston boiler indicates that the water pressure inside the central heating circuit has fallen… Read more →
• 1P1 The 1P1 code is Ariston's early-warning signal that water isn't flowing through the heating system as well as it should… Read more →
• 1P2 The 1P2 code appears on Ariston boilers when the boiler's internal sensors detect that water is not moving around the… Read more →
• 501 Fault code 501 on an Ariston boiler means the boiler attempted to light the burner but received no confirmation that a… Read more →