BoilerFaultCodesAriston Safety Shut-off Fault Code
Also written as SAFETYSHUTOFF — same fault.
The Ariston Safety Shut-off fault code means: your boiler has performed a self-diagnostic check and stopped working because it detected an internal error that requires a reset or professional inspection.. It appears on 11 Ariston models in our database.
Technical description: At the start of every lighting phase, the P.C.B. performs a series of internal controls. If a malfunction occurs, the boiler will shutdown until the problem has been resolved.
DIY fix possible
Press the 'Reset' button on the front control panelSwitch the electricity supply to the boiler off and back on after 30 secondsCheck that your gas pre-payment meter (if applicable) has credit
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Ariston models that show the Safety Shut-off fault code
Click a model for the full fault code list and model-specific repair notes.
- Challenger 80E Repair: £150-350
- E-Combi One Repair: £150-350
- E-Combi One 30 Repair: £150-350
- Euro Combi 30 MFFI Repair: £180-450
- Euro Prisma 24 Repair: £100-£350
- Genus 27 Repair: £250-450
- Genus 30 Plus Repair: £250-450
- Genus One 24 Repair: £250-450
- Genus One 30 Repair: £250-450
- Genus Premium Repair: £250-480
- Microsystem 15 Repair: £150-350
Source
Ariston Safety Shut-off 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