How much does it cost to fix Ariston error code 70 ●, 80 ●, red ●?

Typical repair cost for the Ariston 70 ●, 80 ●, red ● fault is £150-300 including labour.

70 ●, 80 ●, red ● Emergency

Ariston 70 ●, 80 ●, red ● Fault Code

Q: What does the Ariston 70 ●, 80 ●, red ● fault code mean?

Your boiler has detected a break in a vital safety circuit and has shut down to prevent potential overheating or hazardous operation.

Also written as 7080RED — same fault.

The Ariston 70 ●, 80 ●, red ● fault code means: your boiler has detected a break in a vital safety circuit and has shut down to prevent potential overheating or hazardous operation.. It appears on 1 Ariston model in our database.

Technical description: Thermofuse open

Typical repair cost £150-300 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Ariston models that show the 70 ●, 80 ●, red ● fault code

Click a model for the full fault code list and model-specific repair notes.

Clas One Repair: £150-300

Source

Ariston 70 ●, 80 ●, red ● fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026